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87results about How to "Avoid burning accidents" patented technology
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Method for correcting phase sequence of power line of permanent magnet synchronous motor driver of electric car
ActiveCN103944477AAvoid burning accidentsImprove R&D efficiencyElectronic commutation motor controlVector control systemsElectric machinePermanent magnet synchronous motor
The invention relates to a method for correcting a phase sequence of a power line of a permanent magnet synchronous motor driver of an electric car. The permanent magnet synchronous motor driver inputs low currents in the fixed direction into a permanent magnet synchronous motor to enable the motor to rotate, the connecting phase sequence of the power lines of the driver and the motor is judged through the forward and reverse rotating direction of the motor, then a collected rotor electrical angle is corrected, and therefore the motor can operate normally. The connecting phase sequence of the power lines of the driver and the motor does not need to be known, and the connecting phase sequence can be judged automatically. When the connecting phase sequence is not correct, the power line does not need to be connected again. Therefore, in the development process of the three-phase permanent magnet synchronous motor driver of the electric car or the maintenance process of the electric car, technicists can connect the power lines of the driver and the motor freely, line connection, phase sequence testing and other complex work are reduced, development and maintenance work efficiency can be greatly improved, and the accident that the motor or a controller is burnt up due to phase sequence errors is effectively avoided.
Owner:中国东方电气集团有限公司
Self-propagating electrode based on electronic ignition
ActiveCN104096964BCompact and reliableEasy to disassembleWelding/cutting media/materialsSoldering mediaElectricityCombustion
Owner:成都银河动力有限公司
Bearing with axial buffer function
InactiveCN102359499AAvoid burning accidentsBearing assemblyBearing unit rigid supportBall bearingRolling-element bearing
The invention relates to a bearing with an axial buffer function, which comprises a bearing left cover and a bearing right cover that are arranged at intervals, wherein a rolling bearing bush is arranged between the bearing left cover and the bearing right cover, the bearing left cover, the bearing right cover and the rolling bearing bush are fixed into a whole, an inner ring body is arranged inside the rolling bearing bush, an external ring body is arranged outside the inner ring body, a rolling body is arranged between the inner ring body and the outer ring body, an axial pretightening spring is arranged on the bearing right cover and supports against the right end face of the outer ring body, an oil thrower pretightening ring is arranged between the left side of the inner ring body and the right side of the bearing left cover, the right end face of the oil thrower pretightening ring supports against the left end face of the inner ring body, and the left end face of the oil thrower pretightening ting supports against the right end face of an axial baffle ring on a rotating shaft. The invention ensures that the axial direction of the whole air side deep groove ball bearing device is not limited so that the seizure burn up accidents possibly generated by limited tail and head sides of the rotating shaft are prevented.
Owner:SEC ELECTRIC MACHINERY
Three-phase asynchronous motor for explosion-proof fan
ActiveCN109687666AAvoid burning accidentsExtended service lifeManufacturing dynamo-electric machinesCooling/ventillation arrangementHeat conductingThree phase asynchronous motor
The invention relates to a three-phase asynchronous motor for an explosion-proof fan, and relates to the technical filed of motors. The three-phase asynchronous motor comprises a motor body, a case sleeving the motor body, fan blades coaxially fixed to an output shaft of the motor body, and a dehumidification mechanism arranged on the motor body and used for dehumidification; and the dehumidification mechanism comprises a plurality of heating sheets arranged on the inner wall of the case and distributed around the circumferential side of the motor body at equal angles, a plurality of gas holesare formed in the motor body in the two axial ends of the motor body, a heat conducting layer is arranged between the heating sheets and the motor body, the gas holes are opposite to the fan blades,and a plurality of convection holes are formed in the circumferential surface of the motor body. The three-phase asynchronous motor has the effect that the motor burnout accident caused by the fact that the motor is affected by the damp is avoided, so that the service life of the motor is prolonged.
Owner:ZHEJIANG CHAOSHUN ELECTROMECHANICAL
Drying device for EVA (Ethylene Vinyl Acetute) sample crosslinking degree test
ActiveCN102221283AAvoid Burning AccidentsEasy to dryWeighing by removing componentDrying using combination processesPulp and paper industryToluene
The invention provides a drying device for an EVA (Ethylene Vinyl Acetute) sample crosslinking degree test. The drying device comprises a thermal-insulating oven, a tank cover, a fluid removal barrel, a motor, a drainage electromagnetic reversing valve, a fluid drainage tube, a gas transmission electromagnetic reversing valve, a hot air inlet tube and a hot air exhaust tube, wherein the fluid removal barrel driven by the motor is arranged in the thermal-insulating oven; the fluid drainage tube and the hot air inlet tube are arranged at the bottom of the thermal-insulating oven; in the height direction, the fluid drainage tube is positioned under the hot air inlet tube; the fluid drainage tube is communicated with the cavity of the thermal-insulating oven; the hot air inlet tube is communicated with the cavity of a closed drying tank body; and the hot air exhaust tube is communicated with the upper side of the cavity of the thermal-insulating oven. By using the device, an extracted EVA rubber sample can be directly subjected to fluid removal and drying, a toxic dimethylbenzene solvent is concentrically recycled, so that the toxic dimethylbenzene solvent is prevented from overflowing to pollute the environment and hurting operators; and drying is carried out by adopting hot air flow at the temperature of between 30 and 50 DEG C, so that burning accidents of the dimethylbenzene in a drying process can be effectively prevented, and the EVA rubber sample can be dried quickly.
Owner:EGING PHOTOVOLTAIC TECHNOLOGY CO LTD
Power equipment and transmission line malfunction comprehensive online monitoring system
InactiveCN104316839AImprove signal anti-interference abilityTo achieve temperature compensationFault locationInformation technology support systemDatabase serverMonitoring system
The invention discloses a power equipment and transmission line malfunction comprehensive online monitoring system which comprises a wireless temperature measuring terminal, a line malfunction detector, a transfer station, an information receiving main station, a database server and a monitoring host. The wireless temperature measuring terminal is wirelessly connected with the information receiving main station through a built-in wireless communication module, the line malfunction detector is wirelessly connected with the information receiving main station through a built-in wireless communication module and the transfer station, and the information receiving main station is connected with the database server which is connected with the monitoring host. The system can monitor and upload power equipment temperature rise standard exceeding and transmission line ground fault information in real time, quickly locate line fault sections and fault branches, shorten fault clearing time and improve safety and reliability of power equipment and transmission lines.
Owner:ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY +1
Crystallizing tank for boiling sugar
InactiveCN102676704AAvoid wear and tearLarge design angleSugar crystallisationBiochemical engineeringSugar
The invention relates to the field of sugar-producing devices and particularly relates to a crystallizing tank for boiling sugar which is smooth in operation, good in sealing performance, good in massecuite circulation, uniform in concentration, little in sugar crystal grain abrasion and capable of effectively saving the time of sugar boiling. The crystallizing tank comprises a tank body (1), wherein an evaporator (2) is arranged inside the tank body (1), a discharging port (3) is arranged at the bottom of the tank body (1), a feeding port (4) and a blow-down pipe (5) are arranged on the side wall of the tank body (1), and a driving device is arranged on the upper portion of the tank body (1) through a supporting seat (6); a heating chamber is arranged on a position inside the tank body (1), the position corresponds to the evaporator (2), and an evaporating chamber is arranged on the upper portion of the evaporator (2); the heating chamber is provided with and respectively communicated with a steam input pipe (7) and a seed input pipe (8); the driving device is connected with a main shaft (9) extending to the inside of the tank body (1); a forced-circulation blade (10) arranged inside the center of the evaporator (2) is installed at the end of the main shaft (9) which extends to the inside of the tank body (1); and one side of the supporting seat (6) is connected with a vacuum tube (11).
Owner:郑凯锋
Air core reactor
InactiveCN102810381AMonitor internal temperatureReduce internal temperatureThermometers using physical/chemical changesElectric component structural associationTemperature controlAir core
The invention provides an air core reactor, which comprises a coil, wherein the coil comprises a plurality of encapsulations; each encapsulation comprises a plurality of parallel conductor layers; an optical fiber probe used for measuring the internal temperature of the coil is arranged in the coil; and the optical fiber probe is connected with a temperature controller arranged outside the coil. According to the invention, the internal temperature of the air core reactor can be accurately monitored with the help of the optical fiber probe in the coil in real time, so that the accident that the air core reactor is burnt down by over temperature can be avoided, and the operation service life of the reactor can be prolonged further.
Owner:TEBIAN ELECTRIC APP CO LTD
Electronic ignition based self-propagating welding electrode
ActiveCN104096964ACompact and reliableEasy to disassembleWelding/cutting media/materialsSoldering mediaThermodynamicsElectrical battery
The invention belongs to the technical field of welding and relates to an electronic ignition based self-propagating welding electrode comprising a handle, an end cap, a flux tube, welding flux, and a packaging plug. The handle is provided with a battery cavity and a switch cavity. A spring and a metal plate are disposed at two ends of the battery cavity and are connected with two first contacts arranged at a connecting end, through wires respectively. The end cap is provided with two corresponding second contacts. When the handle is connected with the end cap, the first contacts are in contact with the second contacts. The packaging lug end of the flux tube is provided with an ignition segment 3-5mm long; space between the ignition segment and the end cap is filled with the welding flux; the head portion of an electronic ignition head covers the ignition segment; a wire of the electronic ignition head penetrates the welding flux and a wire hole of an end cap protrusion and is connected with the second contacts. A fuse of the welding electrode need not be ignited with a hand-held fire source during welding, and welding safety is higher; no fuse is exposed, and combustion of the welding electrode caused by contact with naked flame is also avoided; the welding handle is reusable.
Owner:成都银河动力有限公司
Grounding transfer current detection compensation device and working method thereof
InactiveCN103050962AAccurate measurementAvoid burning accidentsEmergency protective arrangements for limiting excess voltage/currentElectricityGround system
Owner:ANHUI ONESKY ELECTRIC TECH
Intelligent inspection management system for power equipment
InactiveCN104331943AAvoid burning accidentsTimely detection of excessive temperature riseChecking time patrolsData processing applicationsHand heldPower equipment
The invention discloses an intelligent inspection management system for power equipment. The intelligent inspection management system comprises a wireless temperature measurement terminal, an intelligent hand-held terminal, an information receiving station, a database server, a temperature monitoring terminal, an equipment management terminal and an asset management terminal, wherein the wireless temperature measurement terminal and the intelligent hand-held terminal are in wireless connection with the information receiving station through a built-in GPRS communication module respectively; the information receiving station is connected with the database server; and the temperature monitoring terminal, the equipment management terminal and the asset management terminal are respectively connected with the database server. According to the system, on one hand, the abnormal condition of the power equipment in operation can be timely found out, and can be processed within the shortest period of time; the inspection quality and the work efficiency of a patrol officer are ensured; the reliability of the power equipment is improved; and the potential safety hazards are eliminated; and on the other hand, the management level of the full life circle of enterprise equipment asset can be improved.
Owner:CHAOYANG POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +2
Intelligent control method and device for electric horn
InactiveCN101980335AHigh vocal efficiencyPower Saving Resonant StateSound producing devicesFrequency stabilizationMicrocontroller
The invention relates to an intelligent control method and an intelligent control device for an electric horn. The dynamic frequency stabilization control method for the electric horn comprises the following steps of: driving the electric horn to work after square wave signals output by a singlechip are subjected to power amplification, then adjusting the frequency of the square wave signals in amode of gradual increasing or gradual reducing with adjusting quantity of 0.005 to 5.0Hz, and meanwhile, detecting the vibration strength of a vibrating diaphragm of the electric horn through the singlechip so as to find the natural vibration frequency of the electric horn. The control device of the electric horn comprises a bowl-shaped bottom shell, a static iron core, a dynamic iron core, a coil, the vibrating diaphragm and a control circuit, wherein the control circuit comprises a micro processing module, a power supply module, a coil driving module, a key input module and a vibrating diaphragm vibration signal detecting module. The invention provides the intelligent control method and the intelligent control device for the electric horn, which can automatically adjust the driving frequency in real time and automatically stabilize the sound pressure level, wherein the device has environment-friendly sound production function and is convenient to connect keys.
Owner:曹志才
Washing machine double-even-power output method and device, washing machine and washing method
InactiveCN103422325AReduce or eliminate damageAvoid burning accidentsToothed gearingsElectric machinesProcess engineeringPower unit
The invention discloses a washing machine double-even-power output method. The method comprises fixedly connecting an input unit of a reducing mechanism with a power unit for providing rotation kinetic energy; fixedly connecting a dewatering output unit of the reducing mechanism with a dowering shaft casing of a washing machine; connecting a washing output unit with a washing shaft of the washing machine; by connecting the washing output unit with the input unit, enabling the washing output unit to rotate around the axis of the power unit; by connecting the dewatering output unit with the washing output unit through engagement, enabling the dewatering output unit and the washing output unit to achieve self-rotation respectively through the interaction between the dewatering output unit and the washing output unit to drive the washing shaft and the dewatering shaft casing to rotate. The washing machine double-even-power output method enables the rotation speed of the washing shaft to change along with the washing load change.
Owner:CHANGZHOU XINYA ELECTROMOTOR
Washing method and applied washing machine driving mechanism
InactiveCN103103725AReduce or eliminate damageAvoid burning accidentsOther washing machinesControl devices for washing apparatusEngineeringMechanical engineering
The invention relates to a washing method and an applied washing machine driving mechanism. An input member of a reducing mechanism is fixedly connected with a power member which provides rotating motion energy. A dehydration output member of the reducing mechanism is fixedly connected with a dehydration shaft sleeve. A washing output element of the reducing mechanism is connected with a washing shaft. The washing output part is connected with the input element, so that the washing output element rotates around the power element in a revolution mode. The dehydration output element is connected with the washing output element in a meshed mode, so that the dehydration output element and the washing output element respectively rotate by mutual effect through mutual effect. The magnetic damper is arranged and connected outside the dehydration shaft sleeve, and the magnetic damper can produce damping force on the dehydration shaft sleeve, so that rotating speed of the dehydration shaft sleeve is equal to or less than that of a washing shaft. The washing method and the applied washing machine driving mechanism greatly ensure washing effect, and meet the requirement for washing ratio.
Owner:CHANGZHOU XINYA ELECTROMOTOR
Energy-storage spring operating mechanism of low-voltage isolating switch
The invention discloses an energy-storage spring operating mechanism of a low-voltage isolating switch, which is installed at the top of the low-voltage isolation switch. The energy-storage spring operating mechanism comprises an operating shaft, shifting rods and a stroke compensation part, wherein the operating shaft is installed at the top of the low-voltage isolating switch and can rotate freely along a radial direction; two shifting rods are provided, are perpendicular to each other and are fixedly arranged at the bottom of the operating shaft; a structure of the stroke compensation part is as follows: a spring installation shaft is hinged onto the operating shaft, and a first elongated through hole is formed in a movable end of the spring; a spring sleeves the spring installation shaft; a rotating shaft is hinged to the top of the low-voltage isolating switch; a short arm and a long arm are respectively perpendicularly fixed on the rotating shaft; the bottom end of a first shaft is fixed between the long arm and the short arm and penetrates through the first elongated through hole; a second elongated through hole is formed in a movable end of the long arm, and a second shaft can be driven by the shifting rod to slide along the second elongated hole; and a cylindrical projection is fixedly formed at the bottom of the long arm. By designing the stroke compensation part, the energy-storage spring operating mechanism can ensure that the switch action is unrelated to the manual operation.
Owner:SCHNEIDER WINGOAL TIANJIN ELECTRIC EQUIP
Motor assembly for vertical axis washer
InactiveCN103117631AReduce manufacturing costReduce noiseOther washing machinesAsynchronous induction motorsMaximum torqueActuator
The invention relates to a motor assembly for a vertical axis washer. The vertical axis washer comprises a wash actuator fixedly connected with a wash shaft and a dewatering actuator fixedly connected with a dewatering shaft sleeve. The motor assembly comprises a motor, a reduction mechanism connected with the motor, the wash shaft, the dewatering shaft sleeve, and a clutch device, wherein the wash shaft and the dewatering shaft sleeve are connected with the reduction mechanism and the clutch device is used for switching washing and dewatering modes. The motor assembly is characterized in that the motor is an eight-pole induction motor. The eight-pole induction motor comprises a stator component and a rotor component mounted within the stator component. Rotation axis of the rotor component overlaps with axis of the wash shaft. The motor assembly fully satisfies maximum torque and starting torque required by mechanism operation, enables manufacturing cost to be greatly lowered and is low in noise.
Owner:CHANGZHOU YATONG JIEWEI MOTOR
Clothes-washing method
InactiveCN103103724AReal-time adjustment of washing output modeReduce washing energy consumptionOther washing machinesControl devices for washing apparatusLaundry washing machineProcess engineering
The invention relates to a clothes-washing method which comprises the following steps: a washing machine comprises a magnetic damper which is connected with a dehydration shaft sleeve in an arrangement mode, the magnetic damper is connected with the dehydration shaft sleeve in an arrangement mode, and the magnetic damper can produce damping force on the dehydration shaft sleeve. Under the working condition of washing, the damping force which is produced by the magnetic damper is adjusted to achieve adjustment of rotating speed on the dehydration shaft sleeve and further achieve washing output of different modes. Under the working condition of washing, the damping force which is produced by the magnetic damper is adjusted to achieve the adjustment of the rotating speed of the dehydration shaft sleeve to achieve the washing output of the different modes. According to different washing load conditions, a washing output mode is adjusted in real time, washing energy consumption is reduced to the maximum extent, and simultaneously an optimum washing effect is achieved.
Owner:CHANGZHOU XINYA ELECTROMOTOR
Low-voltage distribution network null wire break protector
InactiveCN104734128AAvoid burning accidentsWill not affect normal workEmergency protective circuit arrangementsLow voltageEngineering
The invention discloses a low-voltage distribution network null wire break protector. The low-voltage distribution network null wire break protector is characterized by being composed of a switch, a voltage relay, an alternating-current contactor and a signal transmitter. Inlet wires L1, L2 and L3 of the voltage relay are connected with an A phase live wire, a B phase live wire and a C phase live wire of a low-voltage distribution network through the switch respectively, an inlet wire N is connected with a null wire, and normally open contacts 98 and 97 are connected with the B phase live wire and a coil of the alternating-current contactor respectively; the normally open main contact side of the alternating-current contactor is connected with the null wire of the distribution network, and the other side of the alternating-current contactor is connected with a grounding body; one end of the signal transmitter is connected with the normally open contact 97 of the voltage relay, and the other end of the signal transmitter is connected with the grounding body. The low-voltage distribution network null wire break protector has the advantages that when the null wire breaks, work grounding is temporarily formed behind the wire break point so that the three-phase voltage can achieve basic balance; a voltage value is within a rated range of electric equipment, the accident of burning the electric equipment is eradicated, normal work of the electric equipment is not affected, and normal operation of the whole zone area distribution network is not affected either.
Owner:STATE GRID CORP OF CHINA +1
Multi-row synchronous rotating injection device for assisting sintering and injection method thereof
ActiveCN107796222AWell mixedAvoid Burning AccidentsElectric motor controlFurnace typesCoaxial lineInjection device
A multi-row synchronous rotating injection device for assisting sintering includes a sintering pallet. An injection sealing cover is arranged above the sintering pallet. At least one gas blowing pipeand at least one gas branch pipe are arranged above the sintering pallet in the injection sealing cover. Each gas branch pipe is connected with at least one gas blowing pipe. A gas main pipe is arranged outside an injection sealing device. The gas branch pipe is connected with the gas main pipe and the gas blowing pipe through the injection sealing device. The gas blowing pipe includes an injection pipeline and an injection pipe blowing holes. One group of injection pipe blowing holes is formed circumferentially in the injection pipeline. At least one group of injection blowing holes is distributed in sequence in an axial direction of the injection pipeline. One group of injection pipe blowing holes has at least two injection pipe blowing holes. A plugging pipe is arranged in the injectionpipeline in the coaxial line. The plugging pipe is provided with at least one cavity opening to the injection pipe along the axis direction. The part outside the cavity is a solid or a hollow cavitysealed at both ends. The plugging pipe is connected to a driving device for driving the plugging pipe to rotate.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD
Gear speed reduction device, washing machine and washing method thereof
InactiveCN103422316AReduce volumeMiniaturizationToothed gearingsOther washing machinesReduction driveReducer
The invention discloses a gear speed reduction device. The gear speed reduction device comprises a rotating-shaft-free rotator for providing rotating kinetic energy, a speed reduction input component installed in the rotator, a speed reduction output component connected with the speed reduction input component, a first execution component and a second execution component, wherein the first execution component and the second execution component are connected with the speed reduction output component. The speed reduction input component is used for obtaining the rotating kinetic energy and rotating relative to the axis of the rotator by utilizing the obtained rotating kinetic energy; the speed reduction output component is used for outputting power with the rotating speed equal to or lower than the rotating speed of the rotator; and the first execution component and the second execution component are used for rotating under the power effect of the speed reduction output component. A speed reducer is installed in the rotator, and accordingly the volume of the whole gear speed reduction device is compressed. Besides, the gear speed reduction device is simple and compact in structure, saves energy and is small in noise. The invention further provides a washing machine with the gear speed reduction device and a washing method thereof.
Owner:CHANGZHOU XINYA ELECTROMOTOR
Improved quick connector locking device
InactiveCN104942012AAvoid burning accidentsAvoid the problem of not being able to combineMetal rolling stand detailsMetal rolling arrangementsLocking mechanismSlide plate
The invention relates to an improved quick connector locking device, and belongs to the technical field of mechanical locking equipment. The improved quick connector locking device comprises a male quick connector, a cylindrical outer shell, a locking mechanism assembled inside the outer shell and a cylinder. According to the improved quick connector locking device, the locking and unlocking separation processes of the male quick connector can be achieved through the mutual matching of a locking mechanism inner connector spring, a sliding block spring, a base spring, a sliding block, a locking block and a base, and the male quick connector and a female connector inside a bearing pedestal are together fixed on the bearing pedestal and can act along with the bearing pedestal. The improved quick connector locking device is reliable in action and has high fault-tolerant capability, and due to the fact that ejecting by the cylinder is needless in the working process, the phenomenon that the male quick connector and the female quick connector cannot be bonded due to the factors of abrasion of a copper sliding plate of a roller bearing pedestal, looseness of a cylinder base and bending deformation of a cylinder rod is avoided. An oil supply gas pipe penetrates through the center of the device and is connected with the male quick connector, it is effectively guaranteed that oil gas can enter the bearing pedestal, and the accident that the bearing pedestal is burnt down is avoided.
Owner:HANGANG GRP HANBAO IRON & STEEL +1
Strain clamp drainage plate with temperature control heating automatic shunting and alarm apparatus
ActiveCN105977662ALow calorific valueAvoid burning accidentsCoupling device detailsElectric connection structural associationsTemperature controlEngineering
The invention discloses a strain clamp drainage plate with a temperature control heating automatic shunting and alarm apparatus. The strain clamp drainage plate with the temperature control heating automatic shunting and alarm apparatus comprises a strain clamp drainage plate and is characterized in that a bimetallic temperature measurement sheet is fixed on a bolt fixation plate of the strain clamp drainage plate, and the inner-side wall of the strain clamp drainage plate is provided with a shunting lead wire; the central portion of the shunting lead wire is fixed on the inner-side wall of the strain clamp drainage plate through a plastic clamp; a conduction apparatus is arranged at a position, which bridges over the bimetallic temperature measurement sheet, of the shunting lead wire, and the handle end of the strain clamp drainage plate is provided with an alarm. The strain clamp drainage plate, when being heated to a limited scope value due to a resistance increase, can automatically reduce current intensity, flowing through the strain clamp drainage plate, of a power transmission line so as to reduce the heat productivity of the strain clamp drainage plate; and at the same time, when a continuous temperature rise cannot be controlled through shunting, an alarm is immediately given, maintenance or replacement is carried out through timely manual high-altitude operation, and thus the strain clamp drainage plate is effectively prevented from a burnout accident.
Owner:STATE GRID SHANDONG ELECTRIC POWER +1
Coal bed gas drainage method and device
Owner:CHONGQING UNIV
Control method for preventing motor from being switched into short-circuit fault
InactiveCN103972865AAvoid burning accidentsAvoid the spread of accidentsEmergency protective circuit arrangementsEmergency power supply arrangementsElectricityMotor control
The invention belongs to the field of running control and discloses a control method for preventing a motor from being switched into a short-circuit fault. The control method includes that by improving a motor control loop and adopting double locking logic of switch quantity and analog quantity, after a spare power source automatic switch fails to lock, the motor can be effectively prevented from being mistakenly switched into the short-circuit fault; the motor can run safely and reliably to meet requirements of industrial and enterprise production under the circumstance that a spare power source power-losing automatic switch is enabled to act normally. The control method is safe, reliable, easy to implement and used for motor running, has a double locking function and can be widely used in the field of running control of the motors.
Owner:BAOSTEEL STAINLESS STEEL
Dry reactor turn-to-turn short circuit fault protection device and method
PendingCN109274068AEnsure circuit safetyAvoid burning accidentsEmergency protective circuit arrangementsElectrical testingData acquisition moduleAlarm device
The invention discloses a dry reactor turn-to-turn short-circuit fault protection device and a method thereof. The protection device comprises a monitoring host, a data acquisition module, a voltage transformer, a current transformer, an alarm device and a circuit breaker. The data acquisition module collects the voltage instantaneous value and the current instantaneous value of the dry reactor and performs FFT conversion on the voltage instantaneous value and the current instantaneous value, eliminating the effects of harmonic components of voltage and current, Then the loss ratio and inductance value of the dry reactor can be calculated accurately, and the possible short circuit of the dry reactor can be predicted according to the loss ratio and inductance value, and the alarm can be provided. At the same time, the automatic circuit breaker action can be made according to the short circuit fault, which ensures the circuit safety and avoids the burning accident of the dry reactor.
Owner:XIAN XINDONGYUAN ELECTRICAL
Air conditioner compressor control method and device, air conditioner and readable storage medium
ActiveCN113959067AMitigate abnormal tripsAvoid burning accidentsMechanical apparatusSpace heating and ventilation safety systemsThermodynamicsControl theory
The invention provides an air conditioner compressor control method and device, an air conditioner and a readable storage medium. The air conditioner compressor control method comprises the steps that when the air conditioner operates in a heating mode, the exhaust pressure X of a compressor and the temperature T of the environment where an indoor unit is located are obtained; after the air conditioner continuously has n times of abnormal pressure shutdown, the state of the compressor is adjusted according to the exhaust pressure X of the compressor and the temperature T of the environment where the indoor unit is located; when T is smaller than T2 and X is smaller than C, the frequency of the compressor is further controlled to be reduced to the first limit frequency according to the normal protection condition; and T1 < T < T2 and C < X < D. The air conditioner compressor control method and device, the air conditioner and the readable storage medium have the beneficial effects that according to the technical scheme, the operation frequency of the air conditioner compressor is controlled by detecting the exhaust pressure X of the compressor and the temperature T of the environment where the indoor unit is located in real time, damage caused by continuous abnormal shutdown due to the fact that the pressure exceeds the standard is avoided, and therefore the air conditioner can reliably operate for a long time, and the comfort of a user is improved.
Owner:NINGBO AUX ELECTRIC +1
Alternating-current test device for bare switch operating characteristics of transformer on-load tap-changer
InactiveCN105223496AAvoid burning accidentsImprove test resultsCircuit interrupters testingElectrical resistance and conductanceTest efficiency
The invention relates to an alternating-current test device for bare switch operating characteristics of a transformer on-load tap-changer, and belongs to the technical field of transformer switches. The invention aims to provide a transformer on-load tap-changer bare switch operating characteristic alternating-current test device which carries out an operating characteristic alternating-current test in allusion to a bare switch of an on-load tap-changer. The test device provided by the invention is characterized in that the 220V alternating-current mains supply is connected through an interface P1 at first and then transmitted to a transformer T1 and an AC-DC conversion chip respectively through a switch S1, pins 5, 6, pins 3, 4 and pins 1, 2 of an interface IN are externally connected with the output ends of a phase A, a phase B and a phase C of the bare switch of the on-load tap-changer in series respectively, and an output interface of an operating circuit of each phase of the bare switch is equipped with a resistor R; and the pins 5, 6, the pins 3, 4 and the pins 1, 2 are internally connected to pins 1, 2 of the input ends of current sensors S, S2, S3 respectively, and the current sensors S1, S2, S3 respectively correspond to the phase A, the phase B and the phase C of the bare switch of the on-load tap-changer respectively. The alternating-current test device discovers and judges problems such as insufficient contact pressure of a switch contact and the like in allusion to the bare switch of the on-load tap-changer without a transformer winding, the test effect and the test efficiency are improved, and a burning accident of power grid main equipment is effectively prevented.
Owner:JILIN ELECTRIC POWER RES INST LTD +1
Interlocking mechanism of ZW32 type column switch isolation knife and switch mechanism
PendingCN110571091ASimple structureAvoid burning accidentsAir-break switch detailsEngineeringCircuit breaker
The invention provides an interlocking mechanism of a ZW32 type column switch isolation knife and a switch mechanism. The interlocking mechanism comprises a mechanism interlocking plate, a limit shaft, a transmission link plate, a main shaft arm and a shaft sleeve. The mechanism interlocking plate is fixedly connected with a mechanism closing shaft and rotates synchronously with the mechanism closing shaft. The lower part of the main shaft arm is fixedly connected with an isolation knife brake main shaft. The upper part of the main shaft arm is hinged to one end of the transmission link plate.The other end of the transmission link plate is hinged to the right end of the limit shaft. The left end of the limit shaft can extend to the left to be engaged with the mechanism interlocking plate.The shaft sleeve sleeves the outer surface of the limit shaft and is fixedly connected with a circuit breaker casing. According to the invention, the interlocking mechanism of column switch isolationknife closing and the switch mechanism has a simple structure; the rotation of a circuit breaker closing shaft can be limited when the closing of an isolation knife brake is not in place; and switchburnout accidents caused by insufficient closing of the isolation knife brake and continued closing of a circuit breaker.
Owner:北京合锐清合电气有限公司
Safe water seal tank for safe incineration of asphalt smoke tail gas and work method thereof
PendingCN108361721AReduce the amount of flammable dropletsAvoid Burning AccidentsIncinerator apparatusExhaust gasAsphalt
The invention relates to a safe water seal tank for safe incineration of asphalt smoke tail gas and a work method thereof. The safe water seal tank comprises a water seal tank body and a cyclone separator. The top of the water seal tank body is provided with an industrial water inlet, an asphalt smoke tail gas inlet and a smoke outlet. The asphalt smoke tail gas inlet is formed close to one end ofthe water seal tank body. The cyclone separator is arranged above the position close to the other end of the water seal tank body. The bottom of the cyclone separator communicates with the water sealtank body. A liquid seal baffle is arranged in the position, between the smoke outlet and the cyclone separator, in the water seal tank body. The upper portion of the cyclone separator is provided with a smoke inlet connected with the smoke outlet in the water seal tank body through a smoke connecting pipe. The top of the cyclone separator is provided with a tail gas outlet. The two sides of thewater seal tank body are provided with a first full flow opening and a second full flow opening correspondingly. According to the safe water seal tank for safe incineration of the asphalt smoke tail gas and the work method thereof, the quantity of flammable fogdrops caused by bubbling of the asphalt smoke tail gas in the water seal tank can be reduced, subsequent burning accidents in a pipeline are avoided, and potential safety hazards are eliminated.
Owner:ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
Inclined block eccentric type three-dimensional hydroscillator
PendingCN110145235AOscillation effect is goodFix security issuesVibration drillingClamp connectionUpper joint
The invention relates to hydroscillators, in particular to an inclined block eccentric type three-dimensional hydroscillator. The inclined block eccentric type three-dimensional hydroscillator is composed of a shell, an axial oscillation part and a radial oscillation part. An upper joint is arranged in a port in one end of an upper shell in a threaded manner, the axial oscillation rod is movably arranged at the position, below the upper joint, in the upper shell, the axial oscillation part is connected with the upper joint through a spring, the other end of the upper shell is provided with a lower shell in a threaded manner, the radial oscillation part is movably mounted in the lower shell through a thrust bearing, the radial oscillation part and the axial oscillation part are in clamped connection, and a lower joint is arranged on the bottom end of the lower shell in a threaded manner. The inclined block eccentric type three-dimensional hydroscillator has the advantages of being safe,reliable and good in oscillation effect. The problem that an existing oscillator is single in safety and oscillation effect is solved, and the oil and gas development needs can be met.
Owner:YANGTZE UNIVERSITY
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