401results about How to "Safe and stable job" patented technology

The invention discloses a plasma air purification-sterilization device. The air purification-sterilization device mainly comprises a shell, a circulating fan, a primary filter, a plasma reactor, a negative-ion generator, a high-efficiency air filtration device and an MCU (Micro Controller Unit). The air purification-sterilization device is also provided with a circuit protection system to guarantee the sable and safe work of the whole device. A waveform pole plate and an electricity discharging metal wire parallel to the waveform pole plate are adopted to serve as a basic reaction unit of the plasma reactor, and the waveform pole plate can disturb the air entering the waveform pole plate to furthest diffuse the air to the periphery of an electrode wire, so that the aim of complete sterilization is achieved. The plasma reactor works under high voltage and can generate high-concentration plasma for high-efficiency sterilization, and a circuit protection module is arranged so as to allow the device to work stably and reliably. The air purification-sterilization device is also provided with a temperature sensor, an air quality sensor, a dust sensor and a human body infrared detection device which are capable of detecting environment conditions in real time and are matched with the MCU, so that the automatic detection and control on air purification and sterilization are achieved.

The invention provides a control method for a steam thermal system with dual-machine backheating steam extraction. When the pressure of a deaerator is lower than the steam extraction pressure at a heat supply steam extraction port of a deaerator on a main steam turbine, a first steam extraction control valve is opened; when the pressure of the deaerator is higher than the steam extraction pressure at the heat supply steam extraction port of the deaerator on the main steam turbine, the first steam extraction control valve is closed and a steam exhaust control valve is opened. According to the control method, the deaerator is connected with a small steam turbine exhaust pipe and a heat supply steam extraction port of the deaerator on a large steam turbine respectively; through controlling the switches of corresponding control valves, on one hand, synchronisms of the pressure of the deaerator and the steam extraction pressure at the heat supply steam extraction port of the deaerator on the large steam turbine under different running conditions are ensured, and on the other hand, the balance of backheating steam extraction flow is achieved on the premise that the output balance between the small steam turbine and the system auxiliary equipment is ensured. Therefore, by adopting the control method, the balance of the backheating steam extraction flow is ensured, and the small steam turbine is enabled to work safely and stably for a long time.

The invention discloses a cargo cabin component for an unmanned aerial vehicle and the unmanned aerial vehicle with the same. The unmanned aerial vehicle comprises a vehicle body, the vehicle body is provided with a power supply battery, the cargo cabin component is detachably arranged on the vehicle body, the cargo cabin component comprises a cargo cabin, a cabin door and a rechargeable battery, wherein the cargo cabin has an entrance and an exit, and a chamber used for loading cargoes is limited in the cargo cabin; the cabin door is arranged on the cargo cabin and used for opening or closing the exit; the rechargeable battery is arranged on the cargo cabin and comprises a charging port suitable for connecting with an external power supply, and the rechargeable battery is suitable for matching with the power supply battery to charge the power supply battery. The cargo cabin component is capable of providing enough electricity for the unmanned aerial vehicle, and the cyclic utilization rate of the cargo cabin is improved.

A bus-bar frame of power transmission device is prepared as forming said bus-bar frame by a pair of covering plates and two pairs of side plates, setting two sets or above of conductor groups at space enclosed by said covering plates and side plates in lamination mode. The method for electric-connecting multilayer bus-bar frame is also disclosed.

The invention discloses a PWM-wave-controlled electromagnetic relay driving circuit and an implementation method. The electromagnetic relay driving circuit comprises a microprocessor module and a control circuit, wherein the control circuit comprises a driving circuit power supply, an electromagnetic relay, a freewheel diode, a triode and resistors, wherein both ends of a main contact coil of the electromagnetic relay are connected with the freewheel diode in parallel, a negative electrode of the freewheel diode is connected with the driving circuit power supply, a positive electrode of the freewheel diode is connected with a collector of the triode, the driving circuit power supply is subjected to voltage division through the resistors and connected to an A/D port of the microprocessor module, a PWM wave generated by an I/O port of the microprocessor module controls a base of the triode, and an emitter of the triode is grounded through one of the resistors. The PWM-wave-controlled electromagnetic relay driving circuit is simple in structure, saves cost, is fast in operation of the electromagnetic relay, and ensures safe and stable operation.

The invention discloses a highway electric vehicle integrated emergency charging rescue system and method thereof, comprising a relief vehicle. The relief vehicle is provided with a control center and an energy storage center, the control center is communicated with a vehicle terminal of the rescued vehicle through a mobile network; the vehicle terminal receives information from the control center, also can send rescue information to the control center through the mobile data network; the vehicle terminal of the rescued vehicle uploads the operating data during the running process of the rescued vehicle to the control center in real-time, and the control center analysis and determines the rescued vehicle and make corresponding decision based on the operating data during the running process of the rescued vehicle, then the energy storage center is utilized for achieving the emergency charging rescue of the rescued vehicle. The highway electric vehicle integrated emergency charging rescue system and method has the advantages that the problem of highway electric vehicle integrated emergency charging rescue is effectively solved, the effective guarantee of the construction and operation of the electric vehicle charging facilities is provided, and the highway electric vehicle integrated emergency charging rescue system and method also has good social effect.

The invention discloses an expressway rescue system with forewarning analysis function for electric vehicles and a method of the same. The expressway rescue system with forewarning analysis function for the electric vehicles and the method of the same comprises operational centers. The operational centers make decisions after analyzing and judging operating data in the running process of vehicles and send decision information to the rescue centers or vehicle-mounted systems installed on the vehicles through network. The operational centers or the vehicle-mounted systems installed on the vehicles dispatch according to the decision information received. The rescue centers or security operation centers generate the final analysis results according to the exception handling model and achieve event storage, early warning analysis and rescue guidance according to the data uploaded by the vehicle mounted system. The expressway rescue system with forewarning analysis function for the electric vehicles and the method of the same have the advantages of being capable of analyzing general failure of the charging facilities for expressway electric vehicles and elements of affecting the expressway electric vehicles charging, formulating an emergency rescue plan of the expressway electric vehicles, better ensuring the safe operation of the electric vehicles on the expressway, and ensuring the safety and stability of the charging facilities.

The invention discloses a river section water quality monitoring system. The river section water quality monitoring system comprises a bank control base station and a monitoring box, wherein a sampling device, a water quality monitoring device and an underwater control device are arranged in the monitoring box; the sampling device is connected with the water quality monitoring device which is connected with the underwater control device, a balance stabilizing device is arranged at the upper part of the monitoring box, and a lifting control device is arranged at the lower part of the monitoring box. A river section water quality monitoring method comprises steps of (1) building the bank control base station; (2) mounting cables; (3) controlling the monitoring box to reach a river section monitoring point; (4) monitoring the river section water quality. The river section water quality monitoring system is simple in structure, high in pertinence, high in automation degree and convenient to operate; with adoption of the method, the water quality condition of the river section can be monitored in real time, the accuracy is high, information is pushed actively and remotely, remote control is realized, the water quality condition is known by a worker conveniently at any time, and the labor intensity is reduced, so that the working efficiency is increased and the economic cost is reduced.

The invention provides a control and protection device, with the power supplied by the complementation of wind and light, of an aeration oxygenation machine, relates to the environment protection field and in particular to an oxygenation aeration water quality purifying device technology in the environmental engineering subject. The device is characterized by consisting of a wind driven generator, a solar panel, a rectifying device, a protection switch, an AC contactor, an inspection switch, a storage battery, an inverter, a DC monitor, a storage battery low-voltage protection contact and a storage battery overvoltage protection contact. The positive effects brought by the implementation of the invention are: the use of the complementation system of wind and light for power supply solves the problem that energy can not be supplied stably in a single power generation and supply process by either wind energy or solar energy, saves coal energy; realizes the auto starting function of aeration equipment and automatically accumulates the working time of the aeration equipment; realizes the auto protection function against insufficient battery voltage caused by excessive electricity consumption of the aeration equipment and excessive saturation of batteries caused by excessive electricity generated by wind and light and ensures the long-term safe and stable work of the equipment.

A MP3 player for realizing music-share based on Bluetooth technique is prepared as connecting storage and audio processor both to central processor and connecting media player to audio processor, setting a Bluetooth communication module on MP3 player being connected separately to said central processor and audio processor. Its method for realizing music-share purpose based Bluetooth technique is also disclosed.

The invention discloses a method for correcting outer diameter of steel pipes. The method comprises the step of adding a drawing device for pushing a steel pipe to the prior cold-drawing machine, wherein a trolley of the cold-drawing machine grips and draws the drawing device, and the drawing device pushes the steel pipe to pass through a die-drawing seat so as to correct the outer diameter of the steel pipe. The method for correcting outer diameter of steel pipes has the advantages of improving production efficiency and reducing production cost, along with simple process and convenient operation.

The invention relates to a switching device for power supply or power distribution, and discloses a surge suppressor of a switch for power supply and distribution of low-power equipment. The surge suppressor is characterized in that resistors R1 and R3 are connected in parallel; one end of the resistors is connected with the grid of an MOS (metal-oxide-semiconductor) field-effect transistor Q1, and the other end of the resistors is connected with the source of the Q1 and the positive end of a direct-current power supply; resistors R2 and R4 are connected in parallel and are connected between the grid of the Q1 and the negative end of the direct-current power supply in series; capacitors C1 and C2 are connected between the grid and source of the Q1 in series; and the drain of the Q1 is connected with power supply filtering or loading equipment by a fuse. The invention also discloses a surge suppressor of a switch for power supply and distribution of high-power equipment. The surge suppressors solve the problem of electromagnetic compatibility of on/off power equipment of complex systems and achieve the beneficial effects of simple circuit, convenience in debugging, obvious surge suppression, low cost, high reliability and the like.

The invention discloses a cutting device for a glass table board of an integrated cooker. The cutting device comprises a workbench, a cutting mechanism and clamping devices, a movable seat is arrangedbelow the workbench, a mounting plate is arranged between the workbench and the movable seat, a rotating motor, a driven wheel and a rotating screw rod are arranged on the mounting plate, the rotating motor drives the driven wheel to rotate through a belt wheel, the driven wheel drives the rotating screw rod to rotate, the cutting mechanism is located above the workbench, and the clamping devicescomprise supporting rods and clamping pressing plates. A cutting method comprises the following steps that (1) a to-be-cut raw material is fed; (2) positioning and clamping are carried out on the glass plate raw material; (3) the position of the cutting mechanism is adjusted; and (4) cutting machining is carried out. According to the cutting device, the overall structural design is ingenious andreasonable, omni-directional adjustment of the position of the cutting mechanism can be realized, and accurate positioning between the cutting mechanism and the to-be-cut position is ensured; and meanwhile, the clamping devices are designed so that the to-be-cut raw material can be clamped and fixed, and the application range is wide.

The present invention discloses a power grid load transfer method based on global search, comprising the following steps: step 1: acquiring grid model data and state estimation data, and based on the grid model data and the state estimation data, making a grid equivalent to an undirected weighted graph; step 2: calculating the bus maximal power supply capability; step 3: searching for the feasible load transfer path of a bus according to the grid model data and the state estimation data acquired in the step 1; and step 4: acquiring the information of a lost-voltage bus, and obtaining the feasible load transfer path of the lost-voltage bus according to the feasible load transfer path of the bus obtained in the step 3 as a final load transfer scheme. The method can find the feasible transmission line load transfer route and the bus coupler switch load transfer route after the occurrence of voltage loss in the substation bus, can quickly and effectively formulate the load transfer scheme under the voltage loss of the substation bus, and can improve the control capability of the dispatcher for the power grid to protect the security and stability of the power grid.

A hoisting device of a feeding isolator comprises two linear guideways arranged on the two sides of a roof in parallel, a cross beam, a base, an electric winch and a hanging bracket, wherein slide blocks are arranged on the linear guideways in a sliding manner, the two ends of the cross beam are fixedly connected with the slide blocks on the two linear guideways respectively, the cross beam is perpendicular to the linear guideways and is also provided with a guideway, the base is arranged on the guideway of the cross beam in a sliding manner, the electric winch is arranged on the base, the tail end of a steel wire rope on a winch barrel is connected with the center of the hanging bracket, the hanging bracket is connected with a plurality of hanging ropes, and the tail end of each hanging rope is provided with a hook. The hoisting device of the feeding isolator is simple in structure and convenient to operate and saves time and labor, a cover of the isolator can be easily opened to suspend in the air steadily, the hoisting device is wide in coverage scope and strong in applicability, an installed ball screw can accurately control the positions of the slide blocks and the base to guarantee the accurate hoisting position, the isolator does not swing when hoisted, and the operation is safe and stable.

The invention discloses a cascade converter valve, a DC power transmission system and a control method thereof. The cascade converter valve is provided with a high voltage valve group and a low voltage valve group which are connected in series in the DC side. The high voltage valve group is a first converter. The low voltage valve group comprises a second converter and a third converter which areconnected in parallel. At least one of the converters is a hybrid multilevel output converter. The AC side of the first converter and the AC side of the third converter are connected in parallel through a transformer to form the first AC end of the cascade converter valve. The AC side of the second converter forms the second AC end of the cascade converter valve. The cascade converter valve has multiple working modes and AC system access modes, high-voltage, high-capacity and long-distance DC power transmission and receiving AC network hierarchical access and asynchronous partition interconnection can be simultaneously realized under the premise of reducing the total manufacturing cost and area occupation of the DC system and thus the system stability and reliability can be enhanced. The cascade converter valve is suitable for the electric power system of multiple DC feed-in points.