30results about How to "Self-protection" patented technology

The invention relates to a servo valve test system. By adopting a cartridge valve to automatically switch static and dynamic oil lines, the servo valve test system can realize the full automatic one-step test and intelligent analysis of the static properties and the dynamic properties of an electro-hydraulic servo valve, improves the test efficiency of the electro-hydraulic servo valve, and increases the accuracy of the test results. Strictly based on the test standard of the electro-hydraulic servo valve GB / T15623-1995, the whole test method completes all the detection tests of the servo valve, and automatically displays and outputs the test results. The servo valve test system mainly comprises a hydraulic test system, an electrical control system and a data acquisition and processing system, wherein a servo valve to be tested is connected with the hydraulic test system and the electrical control system; a main oil line of the hydraulic test system is automatically switched to the dynamic oil line and the static oil line by a cartridge valve assembly, and the hydraulic test system is also provided with a dynamic cylinder for detecting the servo valve to be tested; and the data acquisition and processing system is connected with the electrical control system and the hydraulic test system.

The invention relates to an oxygen direct-injection pure-hydrogen combustion engine and a power system thereof. The oxygen direct-injection pure-hydrogen combustion engine comprises a hydrogen fuel engine body, a magnesium hydride storage tank, a pressure swing adsorption oxygenerator, a three-way catalyst, a tail gas waste heat utilization unit and a hydrogen purification unit. The magnesium hydride storage tank is connected to a hydrogen opening of the hydrogen fuel engine body through a low-pressure hydrogen buffering tank, and the pressure swing adsorption oxygenerator is connected to an oxygen nozzle of the hydrogen fuel engine body through a high-pressure oxygen buffering tank. Exhausting holes of the hydrogen fuel engine body are connected to the three-way catalyst through a tail gas expander or a turbocharging unit, and an outlet of the three-way catalyst is connected to a gas-liquid separator through a kelaipu unit / combined type kelaipu unit. A gas outlet of the gas-liquid separator is connected to a steam inlet of the magnesium hydride storage tank through the hydrogen purification unit, and a water outlet of the gas-liquid separator is connected to a cooling water tank.The oxygen direct-injection pure-hydrogen combustion engine is combined with the kelaipu unit / combined type kelaipu unit through the hydrogen fuel engine body, tail gas waste heat of the engine body is fully utilized, and the heat efficiency of the engine body is improved.

The invention discloses a strong vibration sensor circuit for a high-voltage circuit breaker and a signal acquisition system. The circuit comprises a charge-voltage conversion unit, a second-order low pass filter unit and a multi-gear amplifying unit, can receive huge charge quantity produced by a strong vibration signal of a high-voltage-class sensor testing high-voltage circuit breaker and can still work stably even under the situation that an electromagnetic environment is severe. The charge-voltage conversion unit adopts a self-discharge integral circuit having a direct-current eliminating function, the multi-gear amplifying unit adopts a fixed resistor for splicing and gear shifting, the resistance value dispersity is small, gear shifting is accurate, a positioner is designed, the dispersity of a sensor is offset, and the problems of low charge sensitivity at high accelerated speed and poor electromagnetic environment at high voltage class are solved. The circuit is simple in principle, ingenious in design, suitable for occasions where strong vibration is acquired and the electromagnetic environment is severe and is beneficial to popularization, and the costs of voltage classes are low.

The invention discloses an electric transmission and transformation equipment contact luminous temperature sensing cap system. The system comprises a power supply device, an electric transmission and transformation equipment contact luminous temperature sensing cap and a monitoring center; the power supply device is electrically connected with the electric transmission and transformation equipment contact luminous temperature sensing cap; the electric transmission and transformation equipment contact luminous temperature sensing cap comprises a wireless transmitting module, and the wireless transmitting module is communicated with a wireless receiving module of the monitoring center through a network; and the electric transmission and transformation equipment contact luminous temperature sensing cap also comprises a fixed and shielded part and a temperature measuring part, wherein the temperature measuring part is arranged in the fixed and shielded part, and a luminous early warning device is arranged in the temperature measuring part. The invention has the advantage that the system is affected little by the outside because independent circuits are used for monitoring the temperature. Different color lamps are displayed according to different temperature control circuits, and the system can accurately monitor temperature, and has stable performances and an obvious practical effect.

The invention relates to a power source energy taking circuit based on a high-voltage power transmission line. The circuit comprises a main circuit body, and the main circuit body is connected with an energy-storage capacitor and a power source chip and comprises rectification and filtration modules. The circuit can normally and reliably work under the two different working conditions of current energy taking and voltage energy taking and provide stable direct-current working voltage for a control circuit. Voltage energy taking and current energy taking can work separately and individually, and two parts of the circuit are connected to an energy-storage circuit and a filtration circuit in the rear through diodes respectively.

The present invention discloses a beam string structure and an application and construction method thereof, the beam string structure comprises a cantilever 5 and a strut bar 3, the cantilever is provided with an upper cable 1 and vertical bars 2, a steadying cable 4 is arranged under the cantilever, and therefore a single-frame beam string structure 7 is formed. A bearing 6 is arranged on the end of the cantilever, which is connected with the bearing by a hinged shoe. The beam string structure provided by the present invention can array the single-frame beam string structures along an annular direction, which are connected together by ring beams to form a cantilever roof structure. The beam string structure is applied to the cantilever roof structure of a stadium. The beam string structure provided by the present invention has three advantages: (1) the one-end constraint can be realized, so that the present invention can be applied to the cantilever roof structure of the stadium; (2) the components mainly bear axial force, thus sufficiently exerting the strength of materials; (3) the structure has functions of self regulation and self protection.

The invention is applicable to the technical field of new energy engines, and provides a liquid hydrogen and liquid oxygen direct injection piston type internal combustion power system. The liquid hydrogen and liquid oxygen direct injection piston type internal combustion power system comprises a hydrogen fuel engine, a magnesium hydride storage tank, a Kelaipu unit, a circulating water tank, a liquid oxygen pressure pump, a liquid hydrogen pressure pump, a water delivery pump and a low-pressure hydrogen buffer tank. The liquid hydrogen and liquid oxygen direct injection piston type internal combustion power system provided by the embodiment of the invention is combined with the Kelaipu unit; therefore, engine tail gas waste heat is fully utilized, the engine tail gas emission problem is thoroughly solved, the heat efficiency of the engine is improved, and zero emission of the engine tail gas is achieved. According to the invention, liquid oxygen and liquid hydrogen are used for combustion, the temperature is high, the pressure is large, the energy density is high, the power is large, and the size is small; and the liquid hydrogen and liquid oxygen direct injection piston type internal combustion power system is mainly used for flight equipment, and can also be used for ground mobile equipment and various vehicles. The liquid hydrogen and liquid oxygen direct injection piston type internal combustion power system can be used for power generation, and can also be used for power output.

The invention discloses an electromagnetic mixing toothless ring planetary gear shifting system, which comprises an input shaft, an input planet carrier and a plurality of electromagnetic gears are arranged on the input shaft, and the electromagnetic gears are respectively controlled to work by four switches, each electromagnetic gear and the multiple evenly arranged output magnetic gears form a group, the centers of the multiple output magnetic gears which are in different groups but the in the same direction are on the same straight line and are connected with a same planetary rotating shaftI which is connected with an output planet carrier, the input planet carrier is connected with a planetary rotating shaft II which is eccentrically connected with a plurality of output magnetic gearswhich are in different groups but in the same direction.

The invention relates to a direct injection gas nozzle and an engine and a power system of the direct injection gas nozzle. The nozzle consists of a shell, a gas collecting chamber, a nozzle injectionhole and a gas passage; the gas passage penetrates through the gas collecting chamber and communicates to the nozzle injection hole; the upper part of the gas passage is provided with a spring, and the lower part of the gas passage is provided with a hollow plunger; a plunger injection hole is formed in the pipe wall of the gas collecting chamber section of the gas passage; the upper part of thegas collecting chamber is provided with a plunger upper gas bearing, and the lower part of the gas collecting chamber is provided with a plunger lower gas bearing; the hollow plunger is provided witha plunger limiting stopper; the body of the shell is provided with an electromagnetic coil; and the plunger limiting stopper and the electromagnetic coil are arranged in a manner of matching. The direct injection gas nozzle can be used for direct injection of gases, such as oxygen, hydrogen, natural gas and argon, is capable of resisting high temperature and high pressure, and is not easy to temper; self cooling can be performed on the direct injection gas nozzle by utilizing the injected gas, so that the service life of a hydrogen nozzle is prolonged.

The invention belongs to the technical field of large storage devices, and particularly relates to a large storage device with self-protection function based on a thermal expansion principle, which comprises a processor, a power connection plate is fixedly connected to the interior of the processor, a protection seat is fixedly connected to the interior of the processor, and an air pressure bag isarranged in the protection seat. A telescopic rod is movably connected to one side of the air pressure bag and located in the protection base, conductive columns are fixedly connected to the left side and the right side of the telescopic rod, the outer surface of the telescopic rod is sleeved with a telescopic spring, a moving plate is movably connected to one side of the telescopic rod, and rotating rods are rotatably connected to the left side and the right side of the moving plate. A rotating gear is rotatably connected to one end of the rotating rod in the processor. When the processor isused, the phenomenon of fire caused by continuous increase of the resistance of the processor is avoided, self-protection is achieved, timely disconnection can be achieved, and the phenomenon that electrical components in the processor are burnt out is avoided.

The invention provides an energy-saving LED smart street lamp. The energy-saving LED smart street lamp comprises a lamp holder and a lamp pole; the lamp pole is installed above the lamp holder; a microcomputer control system is installed inside the lamp holder; lamp brackets are installed at the left and right sides of the top of the lamp pole; the lamp pole is respectively equipped with LED lampbodies through the lamp brackets on both sides; a temperature and humidity detector is embedded at the side of the outer end of each LED lamp body; the temperature and humidity detector is electrically connected with the microcomputer control system; an accommodating hole is configured on the upper surface of the lamp pole; the accommodating hole penetrates to the bottom surface of the lamp pole;a telescopic device is installed at one side in the lamp holder; a telescopic umbrella is stored and installed in the accommodating hole through the telescopic device; and the telescopic umbrella is controlled to be opened and closed through the telescopic device. According to the energy-saving LED smart street lamp provided by the invention, the telescopic umbrella is installed in the lamp pole,the temperature and humidity detector detects the environment temperature and humidity, thus the intelligent pre-judgment of rainfall is achieved, and the problems that an existing smart street lamp cannot intelligently predict the weather, and intelligent components are easily damaged and the maintenance cost is high due to rainwater flushing for a long time are solved.

The invention relates to a self-moving anti-impact tunnel hydraulic support. The self-moving anti-impact tunnel hydraulic support comprises top beams and bases, wherein two multifunctional anti-impactdevices are symmetrically connected to the bases; the top ends of the multifunctional anti-impact devices are fixedly connected with hydraulic stand columns; and the top ends of the hydraulic stand columns are hinged to the lower sides of the top beams; side guard plates are arranged on two sides of the top beams, the side guard plates are hinged to the top beams, the lower surfaces of the top beams are fixedly connected with installation blocks, the installation blocks are hinged to turnover jacks, and the free ends of the turnover jacks are hinged to the other sides of the side guard plates; the bases are further fixedly connected with the installation blocks, lower connecting rods are movably hinged to the installation blocks, the top ends of the lower connecting rods are hinged to inclined beams, and the top ends of the inclined beams are hinged to the lower sides of the top beams. The self-moving anti-impact tunnel hydraulic support has the beneficial effects that the turnover jacks can drive the side guard plates to rotate during working, so that the angles of the side guard plates are changed to obtain better protection effect; and meanwhile, the excellent anti-impact performance of the multifunctional anti-impact devices enables the anti-impact effect of the whole device to be better.

The problem addressed by the invention is to operate an electrical component (16) in a cyber-physical system (22). The adapter device (36) provided according to the invention for coupling the component (16) to a data network (20) of the cyber-physical system (22) comprises: a communication unit (40) which is designed to receive defined request data (24) from the data network (20) independently of the component; an interpretation unit (50) which is designed to determine a command (68) executable using the technical features of the component (16) depending on the request data (24); an assessment unit (52) which is designed to generate a potential solution (70' ) to the command (68) comprising at least one control signal (32) for the component (16) depending on operating data of the component (16); and a controller (66) which is designed to issue the at least one control signal (32) of the potential solution (70' ) to a control interface (30) of the component (16).

The invention discloses a high-voltage square-wave pulse power source for sterilizing liquid foods, which belongs to the technical field of high-voltage processing application. The power source is characterized in that a whole system comprises a voltage-boosting unit, a rectifying-filtering unit, a switching device, a square-wave pulse transformer, a control protection unit and a demagnetization unit; 220V power-frequency voltage is connected to the rectifying-filtering unit through the voltage-boosting unit and is input into the square-wave pulse transformer through the turn-on and turn-off of IGBT so as to obtain pulsed high voltage on a load; the control protection unit is connected with the IGBT; and the demagnetization unit is connected with the square-wave pulse transformer. The power source has the advantages of obtaining a square-wave pulse source which allows load parameters to be changeable in a wide range, has the front edge of pulse at a submicrosecond level and has the voltage more than ten kV or tens of kW, greatly reducing cost and giving consideration to medium strength, cell membrane breakdown and non-thermal effect with minimum energy. As liquid foods are taken as the load incapable of avoiding electric discharge and interference in equipment, the power source can realize the self-protection of the equipment.

The invention discloses a gear ring-free planetary magnetic gear speed changing system. The gear ring-free planetary magnetic gear speed changing system comprises a gear ring-free planetary gear portion, a magnetic gear portion and a speed changing portion. The gear ring-free planetary gear portion comprises an input end planet carrier, an output end planet carrier, four groups of solar magnetic gears and planetary magnetic gears, and then gear ring-free planetary gear transmission can be achieved; the magnetic gear portion is made of a permanent magnet, magnetic poles are evenly distributed,and magnetic gear transmission is achieved through the opposites attract action; and the speed changing system comprises pushing rods, synchronizers, an input shaft and the solar magnetic gears, therefore, the purpose that the pushing rods control work of the synchronizers can be achieved, and the input shaft is connected with the four solar gears to generate different transmission ratio changes.The novel speed changing system has the advantages that overload protection is achieved, cleanliness and environmental friendliness are achieved, the machining requirement is low, the transmission ratio is large, the speed changing method is simple, the speed changing range is wide, and the usage occasion is wide.

The invention provides a pump unit control system, which comprises a pump unit data acquisition module, a data processing module, a pump unit controller, an alarm module, a display screen and a flow control valve. The data acquisition module is connected with the pump unit controller through the data processing module; the pump unit controller is connected with the flow control valve, the alarm module, the display screen and a hydraulic pump power supply; the data acquisition module comprises a flow detection sensor and a pressure detection module; the data processing module comprises a flow comparison module and a self-protection module; and the alarm module comprises a voice alarm module and a communication alarm module. The data acquisition module acquires working parameters of a hydraulic pump unit, and transmits the collected data to the data processing module, the data processing module analyzes and processes the data, the flow control valve adjusts the hydraulic pump, and the alarm module gives an alarm, so that the state of the hydraulic pump set can be monitored in real time, the pump unit control system has the functions of self-protection, automatic alarm and the like, and the safety in use is improved.

The invention relates to a hydraulic device which comprises a hydraulic valve. The hydraulic valve is provided with a shell. The shell is provided with a first channel penetrating through the shell horizontally. The first channel is provided with a left opening and a right opening. The shell is provided with a second channel penetrating through the shell vertically. The first channel and the second channel intersect with each other to form a cavity of a cross structure. The portion, below the cross structure, of the second channel is provided with a lower channel. An electromagnet is arranged above the second channel. A valve element capable of sliding along the second channel vertically is arranged below the electromagnet. A first spring for supporting the valve element is arranged below the valve element. An outlet of the lower channel is formed below the second channel. The middle of the valve element is the neck portion which becomes thinner. A sealing ring matched with the lower portion of the second channel is arranged below the valve element. A side seam is arranged below the sealing ring. The hydraulic device has the advantages that whether the lower channel and the first channel are communicated with each other or not can be controlled by controlling the electromagnet, and the hydraulic device further has the advantages of being simple in structure and low in cost.

The invention discloses a new energy automobile heat dissipation method which specifically comprises a protective bottom pocket which is provided with a spherical pocket body and a contact guide wheel installed in the middle of an inner cavity of the spherical pocket body, and a cooling device installed at the top of a guide device. The air inlet device is installed on the top of the annular circular plate, the annular flow guide plate is installed on the top of the annular circular plate, the refrigerators are installed on the top of the annular circular plate and located on the front face and the back face of the annular flow guide plate, and the annular baffle is installed on the top of the annular circular plate and located on the outer side of the air inlet device. Through the design of the spherical pocket body of the protective bottom pocket, the contact area between the protective bottom pocket and the ground is reduced in the use process, the friction force of equipment is reduced, the equipment is prevented from influencing the running speed in the running process of the new energy vehicle, and meanwhile the impact resistance to foreign objects is improved through the spherical surface arrangement of the protective bottom pocket; and the safety of the device and internal components can be protected.

The invention provides an active vehicle collision protection system, a vehicle and a method.The active vehicle collision protection system comprises an anti-collision device, the anti-collision device is installed on a vehicle body and can be switched between a folded state and a released state, and when the vehicle collides with an obstacle, the anti-collision device can be switched between a folded state and a released state; the anti-collision device is switched to a released state to protect the vehicle and the obstacle, otherwise, the anti-collision device is kept in a folded state; the detection module is used for detecting obstacles and sending detection information; the control module is used for receiving the detection information and judging whether the obstacle collides with the vehicle or not, when the control module judges that the obstacle collides with the vehicle, an execution instruction is sent within preset time, and otherwise, the execution instruction is not sent; and a driving module. According to the active vehicle collision protection system disclosed by the embodiment of the invention, not only is the self-protection of the vehicle facilitated, but also the protection of pedestrians and opposite vehicles can be realized.