46results about How to "Protection from being burned" patented technology

The invention relates to a wireless-receiving system for detecting microelectronic mechanical microwave frequency and a preparation method thereof. The wireless-receiving system for detecting the microelectronic mechanical microwave frequency has quite simple structure, large measurement magnitude range, no direct-current power consumption and easy integration. In the system for detecting the microelectronic mechanical microwave frequency, gallium arsenide is used as a substrate, wherein a microwave antenna (A), a one-three power splitter (B), a coplanar waveguide transmission line (C), a two-in-one power combiner (D), an MEMS cantilever capacitive microwave power sensor (E) and an MEMS thermoelectric microwave power sensor (F) are designed on the substrate; and then a phase difference between a signal 3 and a signal 2 after the signal 3 passes through the coplanar waveguide transmission line with the length of lambda / 2 can be determined according to a law of cosines. Because the phase difference corresponds to the frequency of the signal, the frequency of the signal can be measured.

The invention discloses a dual channel microwave power detection system based on a microelectronic mechanical microwave power sensor and a preparation method thereof. The system has the advantages of simple structure, large measurement range and no direct current power consumption. The system is based on a gallium arsenide substrate. A coplanar waveguide transmission line (A), a thermoelectric MEMS microwave power sensor (B) and an MEMS clamped beam capacitor type microwave power sensor (C) are designed on the substrate. When the power of a microwave signal is small, the thermoelectric MEMS microwave power sensor carries out detection according to the one-to-one corresponding relationship between the thermopile output voltage and the microwave power. When the power of the microwave signal is large, the MEMS clamped beam capacitor type microwave power sensor carries out detection. A square mass block is designed on an MEMS clamped beam above the coplanar waveguide transmission line. The area with the coplanar waveguide transmission line is increased, and at the same time the weight of the center position of the MEMS clamped beam is increased. Static power is more likely to cause large deformation of the MEMS clamped beam, and the system sensitivity is improved.

The invention relates to a wireless-receiving system for detecting microelectronic mechanical microwave frequency and a preparation method thereof. The wireless-receiving system for detecting the microelectronic mechanical microwave frequency has quite simple structure, large measurement magnitude range, no direct-current power consumption and easy integration. In the system for detecting the microelectronic mechanical microwave frequency, gallium arsenide is used as a substrate, wherein a microwave antenna (A), a one-three power splitter (B), a coplanar waveguide transmission line (C), a two-in-one power combiner (D), an MEMS cantilever capacitive microwave power sensor (E) and an MEMS thermoelectric microwave power sensor (F) are designed on the substrate; and then a phase difference between a signal 3 and a signal 2 after the signal 3 passes through the coplanar waveguide transmission line with the length of lambda / 2 can be determined according to a law of cosines. Because the phase difference corresponds to the frequency of the signal, the frequency of the signal can be measured.

The invention relates to field of electric, in particular to a power supply device for taking electricity from a high-voltage side in an induction manner. The power supply device can provide a low-voltage power supply for a monitoring device arranged on a high-voltage transmission line or in a high-voltage switch cabinet. The structure of the power supply device comprises an electricity taking module, an electric energy conditioning module and an intellectual protection module, wherein the electricity taking module comprises a primary busbar, an current transformer magnetic core, a secondary coil, a sample resistor and a single-pole double-throw relay; the electric energy conditioning module comprises a rectification circuit, a point bleeder circuit, a grain wave filter capacitor and a voltage-stabilizing circuit; and the intellectual protection module comprises an STM8 singlechip, an RF (radio frequency) module and a super capacitor. The power supply device for taking electricity from high-voltage side in the induction manner has a protection function and an intelligent monitoring function, effectively protects the power supply device and a rear load from being burned, and real time monitor the power supply through the RF module, and ensures safety and stability of providing power supply for an outer load.

The invention is suitable for the technical field of air conditioners and provides a method for calibrating rotating angle of an air outlet of a wide-angle air conditioner. The method includes the following steps: judging whether reservation angle of the air outlet of the air conditioner is uniform with current angle or not; if not, driving a head shaking part of the air conditioner to drive the air outlet to rotate through a basic calibrating angle signal; if a feedback signal is received, continuing to output the basic calibrating angle signal; if no feedback signal is received, continuously outputting the basic calibrating angle signals in a preset number; if the feedback signal is received, returning to the previous step, and if not, stopping calibrating. Angle difference between the reservation angle and the current angle is calibrated through multiple basic calibration angles, whether calibration is performed smoothly or not is examined through the feedback signal, a user can try to enable angle calibration to restore a normal state if calibration is not smoothly performed, and calibration can be stopped if restoration fails to protect the air conditioner from being burnt, so that angle calibration process is realized intelligently while equipment safety is protected.

The invention relates to a combustion heating system for a Stirling engine. The combustion heating system for the Stirling engine is composed of a straight-shaped gradient lapped type porous medium combustor and a fill type porous medium combustor, which are arranged up and down, wherein the straight-shaped gradient lapped type porous medium combustor comprises a shell, a fuel gas inlet, a pre-mixing chamber, an axial thermal insulating layer, a flame igniter leading wire protective tube, an igniter, a gradient ceramic porous medium layer and a catalyst layer, wherein the fuel gas inlet, the pre-mixing chamber, the axial thermal insulating layer, the flame igniter leading wire protective tube, the igniter, the gradient ceramic porous medium layer and the catalyst layer are arranged in the shell in sequence form top to bottom, the fill type porous medium combustor comprises an external insulating layer, a metal net cylinder arranged in the insulating layer and heating tubes arranged in the metal net cylinder in a central symmetry mode, and the gaps of the heating tubes are filled with metal wires. The combustion heating system for the Stirling engine has the advantages of being stable in combustion, high in combustion efficiency, good in heat transfer performance, good in heat storage performance, stable in working, wide in load regulation range, easy to regulate and less in pollutant discharge, and the effect on improving the fuel gas type Stirling engine working efficiency is remarkable.

The invention discloses a preparing method of waterless chlorinate and industrial alcaine with low water cobalt chloride (CoCl2.H2O-CoCl2.3H2O), hydrogen gas and chlorine gas as raw material, which comprises the following steps: using high temperature hydrochloride gas generating by burning hydrogen gas and chlorine gas; carrying low chlorinate into pyrolytic reactor; transferring heat with high temperature hydrochloride gas; generating pyrogenic reactor under the catalysis of electromagnetic wave through the pyrolytic reactor; getting waterless chlorinate and water vapor; entering part gas phase material into hydrochloride synthetic furnace through air-solid segregation; proceeding cyclical usage; displacing left gas phase material into hydrochloride recovery system; getting industrial alcaine.

The invention discloses a starter protector for controlling a starter current limiter. The starter protector comprises a high-side switch, a first sampling circuit, a second sampling circuit, a third sampling circuit and a controller, wherein the high-side switch is used for being connected to a connection path from external control voltage to the control terminal of the starter current limiter in series, and the external control voltage is used for controlling the starter current limiter to carry out the current limiting work; the first sampling circuit, the second sampling circuit and the third sampling circuit are used for collecting the input end voltage, the output end voltage and the external control voltage of the starter current limiter correspondingly; and the input end of the controller is connected with the output ends of the first to third sampling circuits, and the output end of the controller is connected with the control end of the high-side switch so that the high-side switch can be controlled to be switched on or off. The invention further discloses an automobile starting control system. The starter protector can recognize the fault situations of the starter current limiter and a starter in the starting process and disconnect the external control voltage from the starter current limiter automatically in case of faults so that the starter can be protected.

The invention discloses an embossing device for cylinder type woodwork, which is characterized in that the device comprises a pedestal and a support arranged on the pedestal. Two parallel first embossing shafts are hinged on the pedestal; a second embossing shaft in parallel with the first embossing shafts is hinged on the support; and a triangle shape is formed among the first embossing shafts and the second embossing shaft. An embossing mould is arranged on the outer surface of the second embossing shaft, and a heating device is arranged on the second embossing shaft. A temperature control device electrically connected with the heating device is arranged on the support and a driving mechanism driving the second embossing shaft to rotate is arranged on the support. The embossing device has the advantage of high efficiency, and is applicable to mass production of the cylinder type woodwork embossing processing; a horizontal adjusting device and a vertical adjusting device are respectively arranged on the first embossing shafts and the second embossing shaft, and are capable of adjusting the space between the embossing shafts so as to meet the requirements of the woodwork processing with different diameters, therefore, the embossing device has convenient usage and wide application range; the second embossing shaft is composed of a shaft body and a shaft cover, thereby facilitating assembly and disassembly of an electrothermal pipe.

A fire-fighting equipment power supply having a relay protection circuit comprises an EMI filtering lightning protection circuit, a rectifying and filtering circuit, a power conversion circuit, a DC24V rectifying and filtering circuit and a host and backup electric conversion circuit which are connected orderly. The DC24V rectifying and filtering circuit is connected with a charging management circuit, the host and backup electric conversion circuit is connected with the relay protection circuit, and the relay protection circuit comprises an MCU and a relay K1. When the fire-fighting equipmentpower supply detects that the voltage of an AC power grid is disconnected, the host power supply of the fire-fighting equipment power supply needs to be switched to a backup power supply, and under the control of the MCU, the relay K1 sucks, and the backup power supply is connected with the host and backup electric conversion circuit to output. The fire-fighting equipment power supply is characterized in that a diode D2 is in series connection at the power supply end of a coil of the relay K1, and an electrolytic capacitor C1 is in parallel connection with the two ends of the coil of the relay K1.

The invention provides a washing pump used for pumping water or detergent and matching with automobile windscreen wipers for cleaning windscreens. The washing pump comprises a pump casing, an impeller and a motor, the impeller is contained in the pump casing, the motor drives the impeller and comprises a stator, a rotor and an end cover component, the rotor is mounted to the stator, and the end cover component comprises an end cover, a plurality of electric brushes, a plurality of connection plates and a positive temperature coefficient thermistor. The electric brushes are fixed to the end cover, the connection plates are used for being connected to an external power source, and one of the connection plates is connected to one of the electric brushes through the thermistor. By the aid of the thermistor, resistance of the thermistor can be increased rapidly when the temperature of the thermistor rises to a certain degree, so that only a small current flows through the motor, and the motor is protected from being burnt out.

The invention discloses a preparing method of waterless chlorinate and industrial alcaine, which comprises the following steps: choosing low chlorinate (MClN.H2O-MClN.3H2O), hydrogen gas and chlorine gas as raw material; using high temperature hydrochloride gas generating by burning hydrogen gas and chlorine gas; carrying low chlorinate into pyrolytic reactor; transferring heat with high temperature hydrochloride gas; generating pyrogenic reactor under the catalysis of electromagnetic wave through the pyrolytic reactor; getting waterless chlorinate and water vapor; entering part gas phase material into hydrochloride synthetic furnace through air-solid segregation; proceeding cyclical usage; displacing left gas phase material into hydrochloride recovery system; getting industrial alcaine. This invention use heat, which is discharged by the react hydrogen gas and chlorine gas possess high effect and quick speed.

The invention discloses a preparing method of waterless chlorinate and industrial alcaine, which comprises the following steps: choosing low chlorinate (MClN.H2O-MClN.3H2O), hydrogen gas and chlorine gas as raw material; using high temperature hydrochloride gas generating by burning hydrogen gas and chlorine gas; carrying low chlorinate into pyrolytic reactor; transferring heat with high temperature hydrochloride gas; generating pyrogenic reactor under the catalysis of electromagnetic wave through the pyrolytic reactor; getting waterless chlorinate and water vapor; entering part gas phase material into hydrochloride synthetic furnace through air-solid segregation; proceeding cyclical usage; displacing left gas phase material into hydrochloride recovery system; getting industrial alcaine.

The invention discloses a suction integrated flame-out protection frying kitchen stove. The suction integrated flame-out protection frying kitchen stove comprises a stove shell, a stove plate is mounted at the top of the stove shell, the upper portion of the stove shell is provided with a hearth, the bottom of the stove shell is provided with an air inlet, a cyclone guide head is mounted in the middle of the lower portion of the stove shell, the top of the cyclone guide head is provided with an air guide hole, a gas collection chamber is formed in the middle of the cyclone guide head, a gas inlet pipe is arranged on the side wall of the gas collection chamber, a mixing cover is arranged at the top of the gas collection chamber, a casing is arranged at the bottom of the mixing cover, the surface of the casing is provided with gas ejection holes, the stove plate is of trilayer structure, a right-cone surface structure is arranged on the upper portion of the inner side of the outer layer, the lower portion of the inner side of the outer layer is cylindrical, and the stove plate is provided with a fire hole ring, a silencing hole ring and a cooling hole ring outwardly by taking the central axis as the center. The outer side of the stove shell is provided with an air baffle chamber, and an ignition needle, a kindling and a flame-out protection needle are assembled in the air baffle chamber. The suction integrated flame-out protection frying kitchen stove is sufficient in gas burning, low in noise and capable of sucking fire from outside to inside to realize flame-out protection and has high popularization and application value.

The invention discloses an eight-bit serial-parallel conversion driving chip suitable for heavy-current control driving. The chip comprises a low-voltage voltage-stabilizing unit, a detection processing unit, a communication unit and a driving unit, wherein the low-voltage voltage-stabilizing unit is connected with an additionally arranged power source; the detection processing unit monitors a load state output by the chip in real time; the communication unit comprises one eight-bit shift register and one eight-bit data latch register for receiving external serial input data signals, realizing an eight-bit serial-parallel conversion function and sending parallel output signal data to the driving unit for driving a load; and the driving unit receives the signal data of the communication unit and drives the load based thereon. The chip provided by the invention has a load open-circuit and short-circuit detection function and a short-circuit protection function and guarantees communication stability; and the problem of difficulty in driving a load needing to be driven by heavy currents due to low output power of a conventional serial-parallel conversion chip is solved, the chip cost is greatly decreased, and the chip has a great significance on product development and batch production.

The invention provides a device for improving the stable operation of liquid crystal equipment, which comprises a waveform generation unit, a comparison unit, a driving control unit, an overcurrent and undervoltage protection unit and a liquid crystal driving unit which are electrically connected in sequence, a level signal output end of the liquid crystal driving unit is connected with a liquid crystal panel unit; the output end of the over-current and under-voltage protection unit is further connected with the input end of the drive control unit. The over-current and under-voltage protectionunit comprises a fifth resistor, an operational amplifier, a comparator, a sixth resistor, an NPN type field effect transistor, a first diode and a seventh resistor. In the power-on and power-off processes of the system, the stable and reliable operation of the system can be realized by enabling the anode end voltage of the comparator to be lower than the cathode end voltage, the working state ofsubsequent units is effectively ensured, and the damage of an abnormal state to the system is reduced; safety and stability of the working state of an over-current and under-voltage state system arerealized by adopting a self-adaptive adjustment and control mode, so that the stability of the liquid crystal display driving equipment is improved.

The invention discloses a cleaning device for a windscreen of a vehicle. The cleaning device comprises a wiper rod, a wiper head, a wiper motor, a snow sweeping device, an ice removing device and an anti-blocking spraying device; the wiper motor is installed below the windscreen of the vehicle, one end of the wiper rod is fixedly installed on the wiper motor, and the wiper head is installed at theother end of the wiper rod; the side wall of the wiper head fits the windscreen of the vehicle, an overstress-prevention device is arranged between the wiper rod and the wiper motor, and the snow sweeping device used for sweeping away accumulated snow is arranged on the side wall of the wiper head; the ice removing device for removing ice and frost is arranged on the face, facing the windscreen,of the wiper head, and the anti-blocking spraying device used for providing detergent is further arranged below the windscreen, and faces the windscreen. The cleaning device solves the problems that atraditional windscreen wiper is easily damaged and cannot quickly remove frost and snow and has the advantage of being convenient to use and having a good effect of removing ice and snow.

The invention relates to a combustion heating system for a Stirling engine. The combustion heating system for the Stirling engine is composed of a straight-shaped gradient lapped type porous medium combustor and a fill type porous medium combustor, which are arranged up and down, wherein the straight-shaped gradient lapped type porous medium combustor comprises a shell, a fuel gas inlet, a pre-mixing chamber, an axial thermal insulating layer, a flame igniter leading wire protective tube, an igniter, a gradient ceramic porous medium layer and a catalyst layer, wherein the fuel gas inlet, the pre-mixing chamber, the axial thermal insulating layer, the flame igniter leading wire protective tube, the igniter, the gradient ceramic porous medium layer and the catalyst layer are arranged in the shell in sequence form top to bottom, the fill type porous medium combustor comprises an external insulating layer, a metal net cylinder arranged in the insulating layer and heating tubes arranged in the metal net cylinder in a central symmetry mode, and the gaps of the heating tubes are filled with metal wires. The combustion heating system for the Stirling engine has the advantages of being stable in combustion, high in combustion efficiency, good in heat transfer performance, good in heat storage performance, stable in working, wide in load regulation range, easy to regulate and less in pollutant discharge, and the effect on improving the fuel gas type Stirling engine working efficiency is remarkable.

The invention discloses a terminal electricity purchase control circuit and method for preventing arrearage of electricity customers. The terminal electricity purchase control circuit comprises a power supply, a metering cabinet, a tripping relay, a remote control device and a terminal acquisition device, wherein the power supply, the metering cabinet and the tripping relay are in series connection in sequence; and the remote control device is connected with the terminal acquisition device. A tripping control loop in the metering cabinet is connected in parallel with a normally-open contact K1 of a terminal tripping loop; the normally-open contact K1 of the terminal tripping loop is communicated with the remote control device; and the output end of the tripping relay is connected in series with a thermosensitive resistor. The beneficial effects are that, by adding the terminal tripping loop to the metering cabinet, terminal tripping remote control of working personnel is realized; and when an electricity customer is in arrears, the working personnel can controls the terminal to realize switching tripping of the metering cabinet, thereby greatly reducing the risk of electricity charge recovery.

The invention discloses an embossing device for cylinder type woodwork, which is characterized in that the device comprises a pedestal and a support arranged on the pedestal. Two parallel first embossing shafts are hinged on the pedestal; a second embossing shaft in parallel with the first embossing shafts is hinged on the support; and a triangle shape is formed among the first embossing shafts and the second embossing shaft. An embossing mould is arranged on the outer surface of the second embossing shaft, and a heating device is arranged on the second embossing shaft. A temperature control device electrically connected with the heating device is arranged on the support and a driving mechanism driving the second embossing shaft to rotate is arranged on the support. The embossing device has the advantage of high efficiency, and is applicable to mass production of the cylinder type woodwork embossing processing; a horizontal adjusting device and a vertical adjusting device are respectively arranged on the first embossing shafts and the second embossing shaft, and are capable of adjusting the space between the embossing shafts so as to meet the requirements of the woodwork processing with different diameters, therefore, the embossing device has convenient usage and wide application range; the second embossing shaft is composed of a shaft body and a shaft cover, thereby facilitating assembly and disassembly of an electrothermal pipe.

The invention discloses a time-limited protecting device for a three-phase AC point switch. The device comprise a time-limited protector and an alarm host computer; the time-limited protector comprises a three-phase current transformer, a rectifier circuit, a voltage stabilizing circuit and a timing circuit which are sequentially connected; a winding B1, a winding B2 and a winding B3 at the primary side of the three-phase current transformer are respectively correspondingly connected with an A phase line, a B phase line and a C phase line of a three-phase power supply; a relay driving circuit and an RS-485 alarm communication circuit are connected to the output end of a timing circuit; a coil of the relay of the three-phase AC point switch is connected with the relay driving circuit; the alarm host computer comprises an RS-485 communication module which is connected with the RS-485 alarm communication circuit, a PLC module connected with the RS-485 communication module, and a touch type liquid crystal display screen which is connected with the PLC module. The time-limited protecting device for the three-phase AC point switch is simple in structure, and convenient to use and operate; the three-phase AC point switch can be remotely monitored, so that a three-phase AC motor is prevented from being burnt out, and the practicability is improved.

The invention discloses a suction integrated flame-out protection frying kitchen stove. The suction integrated flame-out protection frying kitchen stove comprises a stove shell, a stove plate is mounted at the top of the stove shell, the upper portion of the stove shell is provided with a hearth, the bottom of the stove shell is provided with an air inlet, a cyclone guide head is mounted in the middle of the lower portion of the stove shell, the top of the cyclone guide head is provided with an air guide hole, a gas collection chamber is formed in the middle of the cyclone guide head, a gas inlet pipe is arranged on the side wall of the gas collection chamber, a mixing cover is arranged at the top of the gas collection chamber, a casing is arranged at the bottom of the mixing cover, the surface of the casing is provided with gas ejection holes, the stove plate is of trilayer structure, a right-cone surface structure is arranged on the upper portion of the inner side of the outer layer, the lower portion of the inner side of the outer layer is cylindrical, and the stove plate is provided with a fire hole ring, a silencing hole ring and a cooling hole ring outwardly by taking the central axis as the center. The outer side of the stove shell is provided with an air baffle chamber, and an ignition needle, a kindling and a flame-out protection needle are assembled in the air baffle chamber. The suction integrated flame-out protection frying kitchen stove is sufficient in gas burning, low in noise and capable of sucking fire from outside to inside to realize flame-out protection and has high popularization and application value.

The invention discloses a terminal electricity purchase control circuit and method for preventing electricity customers from arrears, comprising: a power supply, a metering cabinet and a tripping relay are sequentially connected in series; the remote control device is connected to a terminal acquisition device; The normally open contact K1 of the terminal trip circuit is connected in parallel in the trip control circuit inside the cabinet, and the normally open contact K1 of the terminal trip circuit communicates with the remote control device; a thermistor is connected in series at the output end of the trip relay; The beneficial effect of the present invention is that by adding a terminal tripping circuit in the metering cabinet, the function of remote control of the terminal tripping by staff is realized. When the electricity customer owes the fee, the staff can realize the tripping of the switch of the metering cabinet through the control terminal, which greatly reduces the risk of electricity fee recovery for the power supply company.

The invention relates to a phase-shifting output control circuit and an operating method thereof. The phase-shifting output control circuit comprises a phase-shifting trigger pulse signal driving circuit, wherein an output end of the phase-shifting trigger pulse signal driving circuit is connected with a common cathode of a rectifier bridge, and the rectifier bridge is further connected with a silicon controlled rectifier and a zero-point acquisition circuit; when phase-shifting trigger pulse is at high level, the phase-shifting trigger pulse signal driving circuit outputs low level to the common cathode of the rectifier bridge, so as to trigger the silicon controlled rectifier to switch on; and when the phase-shifting trigger pulse is at low level, the phase-shifting trigger pulse signal driving circuit does not output, the silicon controlled rectifier is cut off, both ends of the silicon controlled rectifier restore mains supply voltage, and the zero-point acquisition circuit is driven to obtain a zero-point acquisition signal when the mains supply voltage is at a positive half cycle.

The invention provides a device for improving the stable operation of liquid crystal equipment, which comprises a waveform generation unit, a comparison unit, a driving control unit, an overcurrent and undervoltage protection unit and a liquid crystal driving unit which are electrically connected in sequence, a level signal output end of the liquid crystal driving unit is connected with a liquid crystal panel unit; the output end of the over-current and under-voltage protection unit is further connected with the input end of the drive control unit. The over-current and under-voltage protectionunit comprises a fifth resistor, an operational amplifier, a comparator, a sixth resistor, an NPN type field effect transistor, a first diode and a seventh resistor. In the power-on and power-off processes of the system, the stable and reliable operation of the system can be realized by enabling the anode end voltage of the comparator to be lower than the cathode end voltage, the working state ofsubsequent units is effectively ensured, and the damage of an abnormal state to the system is reduced; safety and stability of the working state of an over-current and under-voltage state system arerealized by adopting a self-adaptive adjustment and control mode, so that the stability of the liquid crystal display driving equipment is improved.

The invention discloses a high-temperature furnace circulating water cooling system. The high-temperature furnace circulating water cooling system comprises a high level water tank, a cooling tower, alow level water tank and an emergency drain valve; the high level water tank is higher than the arrangement position of a high-temperature furnace and is connected with the high-temperature furnace through a first pipe; the cooling tower is connected with the high-temperature furnace through a second pipe; a circulating pump is arranged on the second pipe; hot water output from the high-temperature furnace is conveyed to the cooling tower through the second pipe through the circulating pump; the cooling tower is connected with the high level water tank through a third pipe; the arrangement position of the low level water tank is lower than the arrangement positions of the high level water tank and the high-temperature furnace; the low level water tank is connected with the second pipe through a fourth pipe; the connecting part of the fourth pipe and the second pipe is positioned between the high-temperature furnace and the circulating pump; the emergency drain valve is arranged on thefourth pipe; and the emergency drain valve is automatically opened when the circulating pump stops or water circulation stops. According to the high-temperature furnace circulating water cooling system disclosed by the invention, delayed cooling can be performed on the high-temperature furnace when the circulating pump stops or the water circulation stops, so that the safety of the high-temperature furnace in a fault state is ensured.

The invention relates to a circuit breaker switching off / on coil with a self-protection function. The circuit breaker switching off / on coil consists of a traditional circuit breaker switching off / on coil and a macromolecule polymer positive temperature coefficient (PPTC) resistance element which are connected in series; when the power supply of the switching off / on coil cannot be disconnected due to a fault of a control circuit of the circuit breaker, a self-protection element (PPTC) on the switching off / on coil cuts off the current, so as to avoid burning-down of the circuit breaker switching off / on coil; and after the external power supply disappears, the self-protection element (PPTC) on the switching off / on coil restores to an original state automatically, and manual handling is not needed.

The invention discloses an energy-preservation coal furnace circulating air returning furnace core including a furnace core outer bucket (1), upper caps (2), a furnace core inner bucket (7), and a refractory deposition B (9). The furnace core is characterized in that a refractory deposition A (8) is arranged between the furnace core inner bucket (7) and a refractory deposition B (9), secondary circulating combusting devices (3) are arranged on the refractory deposition A (8) and the refractory deposition B (9), the furnace core inner bucket (7) is connected with a bottom ring (5), the bottom ring (5) is connected with furnace core outer bucket (1), a secondary circulating air inlet (6) is formed in the furnace core outer bucket (1), the furnace core outer bucket (1) is connected with the upper cap (2), the upper caps (2) sleeve the secondary circulating combusting devices (3), and the refractory deposition A (8) and the refractory deposition B (9) are placed on the bottom ring (5). According to the furnace core, the service life of the furnace core can be prolonged, and meanwhile the black smoke is small, the flame is large, the energy consumption is small, the energy utilization is high, the heat transfer efficiency is high, and the combustion is full.

Disclosed is a shaftless screw gear generating device which can convert motive power into electrical energy. Moreover, the conversion efficiency is much increased relative to a traditional steam engine set, a steam-electric generating set, a water turbine set and a turbine set, and meanwhile, the defect in the prior art, such as turbine surge and shaft wear, is compensated. The shaftless screw gear generating device improves the point of action of the motive power, the action route of force and the transmission mode and improves the composition of a generating structure and a control system, namely that the spiral principle of rotating force for rotating a radial rotor (2) by axial thrust is used and the rotor is embedded into the centre of a hollow axial sensing unit of a shell (6). In this way, the volume of the entire generating space is reduced, the material use is reduced, the maintenance workload is reduced and automatic control can react quickly. Meanwhile, the shaftless screw gear generating device has the characteristics of no coupling, no leakage, automatic brake, extendible performance, no maintenance and long service life. The motive power here is not limited to water energy, wind energy, ocean energy, burning thermal energy and thermal energy of nuclear reactions.