172results about How to "Guarantee the safety of electricity use" patented technology

The invention discloses an automatic switching-on device of a circuit breaker. The automatic switching-on device comprises a shell as well as a transmission mechanism and an electronic control mechanism arranged in the shell, wherein transmission mechanism comprises a positive and negative rotation motor, a transmission central shaft, a transmission gear and a driving gear which is used for driving the circuit breaker and is linked with a handle, a first transmission piece is arranged on the transmission central shaft in a free rotation manner, a second transmission piece fixedly linked with the transmission central shaft is arranged on the transmission central shaft and below the first transmission piece, a linkage check block is arranged on one side of the second transmission piece, relative to the anticlockwise rotation direction of the first transmission piece to form the matching structure that the first transmission piece and the second transmission piece are linked in the anticlockwise direction and are independent in the clockwise direction; and the electronic control mechanism controls the positive rotation, the negative rotation and stopping of the positive and negative rotation motor, realizes the rotation switching on of the driving gear, and then is separated from the positive and negative rotation motor. The automatic switching-on device has the advantages that the automatic switching on is realized, the normal separating of the circuit breaker can not be affected, the safety is good and the like.

The invention discloses a recloser of a circuit breaker. The recloser comprises a shell, a forward and reverse rotation motor, a spindle and a driving handle, wherein the forward and reverse rotation motor is arranged in the shell, and the driving handle is used for driving a handle of the circuit breaker in linkage. A transmission blade and a transmission part are rotatably arranged on the spindle, the forward and reverse rotation motor is matched with the transmission blade in a driving and connecting manner, a transmission gear taking the spindle as a rotation center is arranged on the transmission part, a handle gear in mesh transmission with the transmission gear is arranged on the driving handle, an arc groove is formed in the outer surface of the transmission blade corresponding to the transmission part, the center of the arc groove is positioned on the center line of the spindle, an opening is formed in the anticlockwise edge end of the arc groove in the transmission blade, a linkage shaft is rotatably arranged on the transmission part in a combined manner, and the transmission blade and the transmission part are matched structures which are linked anticlockwise and mutually free clockwise. The recloser has the advantages that the handle of the circuit breaker can be reclosed, response time of normal tripping of the circuit breaker cannot be affected and the like.

The invention provides a safe power supply device which comprises a power supply seat and a power supply head matched with the power supply seat. The power supply seat is internally provided with a positioning groove with an upward opening. Locking grooves are symmetrically arranged in the two side walls of the positioning groove. The bottom of the positioning groove is provided with two power supply grooves in left and right symmetry. The lower end part of the power supply head is provided with a sliding groove with a downward opening. The sliding groove is slidingly equipped with a power transmission sliding block inside. The lower end of the power transmission sliding block is fixedly equipped with two power transmission inserting rods in left and right symmetry. The upper end wall of the sliding groove is provided with two guide grooves in left and right symmetry inside, the two guide grooves communicate with the sliding groove, and each of the guiding grooves is slidingly equipped with a pushing rod inside.

The invention belongs to the field of smart home, in particular to a safety socket for smart home. The safety socket includes a shell, wherein two parallel slots are formed in the shell; the inner bottom surface of each slot is fixedly communicated with a wire; a capacitor is fixedly connected in each slot; the capacitor comprises an upper pole plate, a lower pole plate and a dielectric medium clamped between the upper pole plate and the lower pole plate. The end, located in the slot, of the wire is electrically connected with the upper pole plate, the lower side wall of the upper pole plate is fixedly connected with a memory spring, the other end of the memory spring is fixedly connected with a conducting ball, a gap is formed between the conducting ball and the lower pole plate, and a fixing mechanism is arranged at the lower end of the lower pole plate; a plug matched with the safety socket for the smart home comprises a cover body. When more plugs are connected to the socket and the socket generates heat due to an overload condition, the memory spring contracts, and the conduction ball at the lower end of the memory spring is driven to move in a direction far away from the lower polar plate, so that a circuit is disconnected, and the safety of power utilization is guaranteed.

The invention discloses a transformer monitoring system and monitoring method. The monitoring system comprises a transformer, a power supply module supplying 220V voltage to the transformer, a low-voltage side voltage acquisition module, a high-voltage side voltage acquisition module, a gas chromatogram monitoring module, a microprocessor, a communication module, a multi-frequency ultrasonic sensor and a database, wherein the gas chromatogram monitoring module is used for detecting the content of total hydrocarbons in methane and acetylene in transformer oil; the multi-frequency ultrasonic sensor detects the transformer oil and acquires different ultrasonic parameters at multiple frequencies; the microprocessor is used for receiving the ultrasonic parameters acquired by the multi-frequency ultrasonic sensor and determining the operation state of the transformer. According to the monitoring system and the monitoring method, the transformer is detected with a gas chromatogram detection technology, a multi-frequency ultrasonic detection technology and other technologies, the fault diagnosis accuracy is improved, and the fault type of the transformer can be timely analyzed.

The invention relates to the technical field of detection, in particular to a cable quality detecting device and an operating method thereof. The device can be used for examining an installed power network line and timely determining a fault point, and operation and maintenance cost is low. The device comprises a movement module and a control module; the control module is arranged in a circular shell; the movement module is arranged outside the shell; the movement module comprises a plurality of crawling feet; the plurality of crawling feet are all uniformly arranged around the shell and driven by an air cylinder; the air cylinder is connected with the control module; the tail ends of all the crawling feet are provided with sucking discs; the sucking discs are connected with the air cylinder; the top of the shell is provided with a camera; the camera is connected with the control module. The device not only can be used for comprehensively operating and maintaining ground equipment but also can be used for monitoring electrified network frame lines.

The invention discloses a floor heating system with a variable-frequency air source heat pump. The floor heating system is characterized by comprising a variable-frequency air source heat pump host machine, a variable-frequency internal machine and a radiant floor heating system arranged below indoor floor, wherein the variable-frequency air source heat pump host machine internally comprises a variable-frequency compressor and variable-frequency electric control equipment, and a refrigerant backflow connector and a refrigerant output connector are arranged on the variable-frequency air source heat pump host machine; the radiant floor heating system comprises a water pipe, the water pipe is arranged at the bottom of the floor and arranged into an S shape, a water inlet of the S-shaped water pipe is connected with a floor heating water supply pipe, and a water outlet of the S-shaped water pipe is connected with a floor heating water return pipe; a plate heat exchanger, a water pump and indoor electric control equipment are arranged on the variable-frequency internal machine. The floor heating system with the air source heat pump has the advantages of super-high energy efficiency, good environment friendliness, high safety, comfort, the capability of realizing intelligent control and the like.

The invention relates to an intelligent distribution box for electrical equipment, and the distribution box comprises a box body; a power change-over switch which is disposed in the box body, whereinone input end is electrically connected with a service entrance conductor; a voltage measurement module which is connected to the output end of the power change-over switch in a parallel manner; a standby power supply, wherein the output end of the standby power supply is electrically connected with the power change-over switch; a plurality of load control relays, wherein the input ends of the load control relays are in series connection with the power change-over switch; a plurality of current measurement modules, wherein the input ends of the current measurement modules are in series connection with the load control relays; a standby power circuit breaker, wherein the input end of the standby power circuit breaker is in series connection with one current measurement module, and the output end of the standby power circuit breaker is electrically connected with the standby power supply; a plurality of load circuit breakers; an intelligent controller; a cloud server which is in communication connection with the intelligent controller; and a mobile terminal APP which is in communication connection with the cloud server. Compared with a conventional common distribution box, the distribution box has the additional functions of load classification, intelligent dynamic load control, standby power access and conversion and remote communication and control.

The invention proposes a fire protection monitoring device and monitoring method of an electric meter box. The monitoring device comprises a signal detection device, an analogue-to-digital signal conversion module, a control unit and an execution mechanism, wherein the signal detection device is connected with the analogue-to-digital signal conversion module, the analogue-to-digital signal conversion module and the execution mechanism are connected with the control unit, the signal detection device comprises a temperature sensor, the temperature sensor is arranged a switch of the power meter box, a trip device, a fire extinguishing device and a switch control module are further arranged, hierarchical control is achieved by setting a hierarchical control threshold according to different temperatures, the first protection monitoring device can be switched to a dormant state, an internal circuit in the electric meter box is controlled to be powered off, and fire is extinguished when fireoccurs; and moreover, the temperature sensor is arranged at the switch, abnormal heating can be timely found out, so that a fire trigger point can be timely found out, and a corresponding measure is taken in advance to prevent the fire.

The invention provides an anti electric wall circuit for a leakage protection switch and application of the same. The anti electric wall circuit for the leakage protection switch and the application of the same comprises a voltage division circuit, a rectifying circuit, an output circuit, a ground wire input end for connecting with a ground wire, a zero line input end for connecting with a zero line and a protection output end for connecting a leakage protection circuit; the voltage division circuit comprises a first voltage division portion and a second voltage division portion; a first end of the first voltage division portion is connected to the ground wire input end, a second end of the first voltage division portion is connected with a second end of the second voltage division portion, a first end of the second voltage division portion is connected with the zero line input end; the second end of the first voltage division portion is connected with the input end of the output circuit, the output end of the output circuit is connected with the protection output end; the rectifying circuit is connected between the ground wire input end and the input end of the output circuit in a series connection mode. According to the anti electric wall circuit for the leakage protection switch and the application of the same, a traditional leakage protection function is ensured; meanwhile, anti electric wall function is added, namely a ground wire electric protection function, a ground wire broken wire protection function, and a live line zero line reverse connection protection function, and safety in electricity use is ensured to a greater extent.

The invention provides an intelligent power monitoring terminal which comprises a central processing module, a wireless communication module, an information sending module, an electrical parameter measuring sensor module, a storage module, a relay control module, a display module and an input module, wherein the central processing module calculates and outputs a control signal, the wireless communication module is connected to the network, the information sending module sends information to a user, the electrical parameter measuring sensor module monitors electrical parameters of a power supply system in real time, the storage module stores data temporarily, the relay control module receives a relay control signal, the display module displays power supply parameter information, and the input module inputs an instruction; the wireless communication module, the electrical parameter measuring sensor module and the memory module are connected with the central processing module; the central processing module is connected with the information sending module, the relay control module and the display module; and the input module is connected with the central processing module. The intelligent power monitoring terminal has the advantages that communication and feedback of monitoring information are realized for the user, man-machine communication is realized, the electrical parameters of the power supply system are monitored in real time, and power-off measures can be adopted timely when the power supply parameters are abnormal.

The invention discloses an electrical line safety intelligent monitoring instrument which comprises a host and a control panel; wherein the host is provided with a CPU (central processing unit), a current voltage acquisition module, an electric leakage acquisition module, a temperature acquisition module, an overload acquisition module, a power supply processing module, a control loop module, a power-off control module and a communication module, the current voltage acquisition module, the electric leakage acquisition module, the temperature acquisition module, the overload acquisition module,the power supply processing module, the control loop module, the power-off control module and the communication module are electrically connected with the CPU, and the electrical line safety intelligent monitoring instrument further comprises a monitoring power supply input and output interface; the current, the temperature, the voltage, the overvoltage, the leakage current and other informationof each detection point can be monitored for 24 hours in real time; according to the relevant parameters of the loop of electrical line equipment, the cause of faults can be judged, an enterprise is guided to carry out treatment, potential safety hazards of potential electrical line fire disasters are eliminated, and electricity safety is comprehensively guaranteed.

The invention discloses a discontinuous running ventilator controller. The discontinuous running ventilator controller is characterized by comprising a 220V alternating-current power supply, a resistive and capacitive pressure relief and full-bridge rectifying circuit, a 12V voltage stabilizing circuit, a bi-stable timing circuit, a relay driving circuit and a ventilator control circuit, the model of a time-base circuit IC1 in the bi-stable timing circuit is NE555. A normal ventilator cannot be turned on or turned off automatically. When some enclosed spaces need timed ventilation, the ventilator can only be controlled to work manually, and after the ventilator runs, a person must always thick about powering off the ventilator, once the person forgets to power off the ventilator, electricity is wasted, more severely, the ventilator can be burnt out due to overheating of long-time working, and hidden danger is left for fire disasters. Electricity waste is eradicated completely and effectively, and normal use and safety of the ventilator are guaranteed.

The invention discloses an insect-prevention waterproof and fireproof power distribution apparatus. The power distribution apparatus has high water discharge capacity, can prevent rain water permeation in a rainy day to cause power control equipment fault, and has insect prevention and fireproof functions and simple structure; by virtue of the power distribution apparatus, power utilization safetycan be safeguarded fully; the whole apparatus is relatively sealed without more holes, so that mosquitoes and other insects entry can be prevented; through an adjustment nut, the height of the wholeapparatus can be adjusted; the apparatus is far from low-lying areas and the ground with insects, so that insect-prevention and waterproof properties are realized; when there is much water accumulation in the apparatus, a driving motor drives a gear, a cross beam declines, and a water pump extracts the accumulated water to a water liquid collection room; in a rainy day, a hydraulic rod backs off,and a waterproof plate is expanded; in sunny days, the hydraulic rod extends and the waterproof plate is stored, so that rainwater avoidance is realized; for realizing the fireproof property, a fireproof layer is arranged on the outer surface of the power distribution box; by virtue of setting of a reinforcing plate and a metal net, the rigidity of the whole apparatus is improved; and by virtue ofsetting of a decorative surface layer, the attractive degree is improved.

The invention discloses an intelligent monitoring method and system based on an electric energy meter. The method comprises the following steps: S1, acquiring total power; S2, judging whether the current total power is greater than a preset power threshold value or not according to a preset power threshold value; S3, detecting a fluctuation amplitude of the current total power and comparing with apreset fluctuation amplitude threshold value, and if the fluctuation amplitude of the current total power is smaller than the preset fluctuation amplitude threshold value, entering a step S4; S4, calculating duration t of a state that the fluctuation amplitude of the current total power is smaller than the preset fluctuation amplitude threshold value; and S5, judging whether the time t is greaterthan a preset time threshold, and if so, making the electric energy meter trip. In the invention, an unattended state of a high-power electric appliance after the high-power electric appliance is continuously started for a certain time can be analyzed so that tripping operation is performed on the electric meter in time, power utilization safety of users and the society is ensured, and electric energy is saved.

The invention discloses a method for predicting the life of a minitype circuit breaker asset. The method includes the following steps: 1. determining a variant Xi that influences the life of asset, acquiring data, i being a natural number; 2. conducting main component analysis on the variant that influences the life of asset, determining a main component Fh, h being a natural number; 3. based on the main component Fh, establishing a multivariate linear regression model; and 4. computing a value-taking interval of a minitype breaker life Y*. According to the invention, the method, by establishing a math model for leaning and an index system for comprehensive quantification, can identify key factors that influence the life of a minitype circuit breaker asset, can conduct quality and life analysis on the full life cycle of the minitype circuit breaker asset, and effectively monitor asset quality.

The invention relates to a special-purpose access control system capable of comprehensively guaranteeing the power utilization safety of the maintenance staff. Entry and exit of a maintenance mode isrealized by analyzing the current situation automatically; and power-on and power-off of a lock and an air switch are controlled according to the current mode. When the equipment is in an overhaul mode, the maintenance staff makes operation confirmation through the intelligent overhaul access control card, so that the safety of the maintenance staff is guaranteed as much as possible. Meanwhile, the number of the staff members and operation records and the like can be detected in real time, and the maintenance safety is improved.

The invention discloses an electric water heater and a protection device thereof. The protection device comprises a three-pole ganged switch connected with a three-pole pin so as to switch on and off a null line, a firing line and a ground line of a connecting power source, a water flow detection module used for detecting the water flow signal of a water inlet or a water outlet of an electric water heater body to judge whether the electric water heater discharges water or not, a water flow action circuit connected with the water flow detection module and used for generating a first tripping instruction when the water flow detection module judges that the electric water heater discharges water, a tripping circuit connected with the water flow action circuit and used for receiving the first tripping instruction, and a tripping mechanism connected with the three-pole ganged switch and the tripping circuit and used for performing the first tripping instruction so as to control the three-pole ganged switch to control the null line, the firing line and the ground line to be in a disconnected state. The device can effectively guarantee electricity using safety of the electric water heater.

The invention provides an internet-of-things intelligent circuit breaker based on a WIFI mode. The internet-of-things intelligent circuit breaker comprises an electric leakage circuit breaker body andan internet-of-things intelligent device. The internet-of-things intelligent device comprises a sampling circuit, a driving circuit, an MCU and a WIFI communication circuit. The sampling circuit collects current, residual current and temperature of the residual current circuit breaker body in real time and sends the current, the residual current and the temperature to the MCU through A/D conversion after signal conditioning. The MCU compares the current, the residual current and the temperature with corresponding thresholds respectively and outputs high-low level pulse signals to the drive circuit. When the driving circuit receives the low-level pulse signal, the tripping mechanism of the residual-current circuit breaker body is kept not to act. When the high-level pulse signal is received, a tripping mechanism of the residual-current circuit breaker body is driven to act to trip the residual-current circuit breaker body. The WIFI communication circuit sends the current, the residualcurrent and the temperature to a mobile terminal or a cloud terminal. According to the invention, the circuit breaker is combined with the Internet of Things, carries out the effective monitoring andcontrol of the basic state of a circuit, and achieves the real-time monitoring and big data analysis of the circuit breaker in time.

The invention proposes a household intelligent master-slave linkage control system. The system comprises a control assembly, a networking assembly, N jack assemblies and mobile end equipment, whereinthe control assembly is connected with the N jack assemblies and is used for controlling on/off of the jack assemblies and achieving acquisition of electrical parameters such as voltages, currents andpower factors of the N jacks and a temperature in a socket, the control assembly is connected with the networking assembly and is used for achieving uploading of the electrical parameters and state information of the N jacks and temperature information in the socket, the networking assembly is used for receiving a control instruction sent from the mobile end equipment by a cloud server, and the mobile end equipment can be used for achieving remote display of the electrical parameter information such as the voltages, the currents and the powers of the N jack assemblies and monitoring of the temperature in the socket. A socket linkage control mode can be selected, and grouping of the N jacks and master-slave linkage relation can be configured.