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36results about How to "Easy to install and use on site" patented technology

Portable ring main unit remote control electric transfer device

PendingCN110335769AWith remote control electric operation functionEasy to carryContact operating partsEngineeringRemote control
The invention discloses a portable ring main unit remote control electric transfer device, which comprises a remote controller, a fixing device, an electric operating mechanism and a power supply box,wherein the fixing device comprises a fixing rod, an electric operating mechanism position adjustment module, a sucker connecting rod and a sucker; the electric operating mechanism position adjustment module has a hollow square structure; the electric operating mechanism position adjustment module is fixed on the fixing rod through a bolt; the upper surface and the lower surface of the fixing rodare provided with multiple uniformly-distributed mounting holes; one end of the sucker connecting rod is provided with a threaded part; the threaded part passes through the mounting hole and is fixedon the fixing rod through a locking nut; the other end of the sucker connecting rod is provided with the sucker; the sucker absorbs the electric operating mechanism on the surface of the ring main unit; and the electric operating mechanism position adjustment module is welded with a reducer. The portable ring main unit remote control electric transfer device has remote control and electric operation functions, is light in weight, portable, wide in compatibility and is easy to install and disassemble.
Owner:STATE GRID CHONGQING ELECTRIC POWER +2

Thermal-resistance-varying compensation-type thermal resistance test method

The invention provides a thermal resistance test system, which includes a temperature-controllable heat sink, a thermal-resistance-varying module, a heat flow sensor, a temperature sensor, and a signal processing and control unit. The system performs a thermal resistance test through a thermal-resistance-varying compensation method; during work, the thermal-resistance-varying module can compensate the system with a heat flow, which is symmetric to a to-be-tested object on the basis of the heat flow sensor, so that heat flow output of the heat flow sensor is zero; and as a result, the thermal resistance value of the to-be-tested object is equal to that of the thermal-resistance-varying module. The compensation method can reduce and eliminate interference and test error, wherein the thermal-resistance-varying module can adapt with different to-be-tested objects having different thermal resistance values by pre-calibrating the varying rule of thermal resistance. The thermal resistance test method and the thermal-resistance-varying compensation method has excellent environment adaptability, short measurement time, high measurement precision and stability and low detection cost, is convenient to install and use on site, and greatly develops the application field of steady-state thermal resistance test methods.
Owner:QINGDAO UNIV

Body-free coaxial following synergistic perforator

The invention discloses a body-free coaxial following synergistic perforator, which comprises a body-free perforator firing mount and a body-free perforating bullet arranged on the firing mount, wherein the body-free perforating bullet comprises a cartridge case, a powder-type cover and a high explosive, the front end outer wall of the cartridge case is provided with an initiation half slot and a pressure wire, the front end inner wall of the cartridge case is provided with a booster hole, the back end of the cartridge case is provided with a fracturing powder box airtightly, and special fracturing powder is poured in the fracturing powder box and is distributed annularly along the inner wall of the fracturing powder box, wherein the special fracturing powder is prepared by evenly mixing ammonium permanganate of which the weight percentage is between 50 and 80 percent and aluminum powder of which the weight percentage is between 20 and 50 percent. The body-free coaxial following synergistic perforator has a simple structure and reliable mounting, the special fracturing powder is initiated and performs pulse fracturing on stratums directly while the powder-type cover forms high-speed jet flow to perform perforation, and the fracturing effect of the perforation is good, thus the body-free coaxial following synergistic perforator is particularly suitable for operations of high-density and low-permeability stratums.
Owner:XIAN RUITONG ENERGY TECH

Plate-type plant ecological wall with water purification function

The invention relates to a plate-type plant ecological wall with a water purification function, and belongs to the field of urban three-dimensional greening or vertical greening walls. The ecologicalwall comprises multifunctional structural blocks, a threaded vertical rod, hanging buckles, a rooting blanket, a front fiber blanket 1, a front fiber blanket 2 and a water source pipe; and a pluralityof multifunctional structural blocks are arranged up and down in an overlap manner, the front side walls of the plurality of multifunctional structural blocks form a smooth front panel, the front fiber blanket 2 covers the front panel, the front fiber blanket 1 covers the front fiber blanket 2, the front fiber blanket 1 is provided with openings, so that pocket-shaped planting bags can be formedbetween the front fiber blanket 1 and the front fiber blanket 2, and roots of plants can be placed in the planting bags. According to the ecological wall provided by the invention, design of the unitstructure of the multifunctional structural blocks is adopted, so that the structure can be convenient to install and use on site, and promotion performance is improved; and in addition, agriculturalrock wool is adopted to fill filtering purification chambers, plant rooting and sewage filtration are facilitated while air permeability and water permeability are guaranteed, and the ecological wallcan provide a good microbial growth environment.
Owner:深圳市绿园景观实业有限公司

Light path system of trace gas sensor and air chamber

The invention discloses a light path system of a trace gas sensor and an air chamber, wherein the light path system comprises an incidence optical fiber collimator, an emergence optical fiber collimator, a front reflector and a rear reflector, wherein the front reflector and the rear reflector are concave spherical mirrors, concave spherical surfaces are opposite, the mirror surface of the front reflector is provided with an incidence through hole and an emergence through hole parallel to each other; the incidence optical fiber collimator and the emergence optical fiber collimator are coaxial to the incidence through hole and the emergence through hole, are arranged at the outer side, far away from the rear reflector, of the front reflector, and are used for irradiating light beams emitted by the incidence optical fiber collimator to the rear reflector through the incidence through hole of the front reflector, the light beams are reflected by the front reflector and the rear reflector for a plurality of times, and then are irradiated out through the emergence optical collimator by virtue of the emergence through hole in the front reflector. According to the light path system provided by the invention, the light beams are reflected for a plurality of times between the front reflector and the rear reflector, and very high absorption optical path can be achieved within limited space, and the light path system is suitable for the optical gas sensor which has a compact structure and is used for accurately detecting trace gas.
Owner:GL TECH CO LTD

Wireless communication clamp alternating current ammeter without power supply

The invention discloses a wireless communication clamp alternating current ammeter without a power supply, and relates to clamp alternating current ammeters. The ammeter solves the problem that when a socket is installed to the existing clamp ammeter, short-time outage is required, so that potential safety hazard exists. A measuring coil and a power supply coil are wound on an iron core; the measuring coil, the power supply coil and the iron core are arranged in sheaths; the current signal output terminal of the power supply coil is connected with the current signal input terminal of a rectifying and voltage-stabilizing circuit; the rectifying and voltage-stabilizing signal output terminal of the rectifying and voltage-stabilizing circuit is simultaneously connected with the power supply input terminal of a wireless communication circuit, a power signal input terminal of a single-chip microcomputer circuit and a power signal input terminal of a signal shaping circuit; clamp current signals collected by a clamp current sensor are input into the signal shaping circuit through the measuring coil; the signal output terminal of the signal shaping circuit is connected with the shaping signal input terminal of the single-chip microcomputer circuit; the wireless signal output terminal of the single-chip microcomputer circuit is connected with the signal input terminal of the wireless communication circuit. The ammeter is used for measuring clamping alternating current.
Owner:赵威

Ultrasonic atomization spraying nozzle

InactiveCN103521386AReduce flow rateFine water mist particlesLiquid spraying apparatusResonanceSpray nozzle
The invention discloses an ultrasonic atomization spraying nozzle which comprises a shell, a seal and a core. An opening is formed in one end of an inner cavity of the cylindrical shell, and only a small hole is reserved in the middle of the other end of the inner cavity after the other end of the inner cavity is conically closed. A resonance cup provided with an aerial fog spreading device is fixed on the shell, one end of the cylindrical core is cylindrical, the other end of the cylindrical core is conical, a quite thin hollow channel is formed in the center of the core, the hollow channel is closed at the cylindrical end and open at the conical end to be connected with external air, the core is inserted into the inner cavity of the shell from the end, provided with the opening, of the shell, the outer diameter of the core is slightly smaller than the inner diameter of the shell, the cone of the core is slightly smaller than the small hole in the conical closed end of the shell, a water connector is formed in the position close to the conical closed end of the shell, an air connector is formed in the position close to the end, provided with the opening, of the shell, sealing grooves are formed in the positions, between the water connector and the air connector and between the air connector and the end, provided with the opening, of the shell, of the core, the seal is installed on the sealing grooves, an airtight space is formed by the shell, the seal and the core, and an air guiding hole is formed in the wall, in the airtight space, of the core so that the space can be communicated with the hollow channel of the core.
Owner:SUZHOU HUAAN MINING TECH

Method and device for treating dirty oil with sulfur-containing sewage

ActiveCN110104704AAchieve three-phase separation effectAchieve the role of cracking the stable state of dirty oilWater contaminantsRefining with acid saltsAfter treatmentTherapeutic effect
The invention relates to a method and device for treating dirty oil with sulfur-containing sewage, and belongs to the technical field of dirty oil treatment. A certain proportion of sulfur-containingsewage is injected into the dirty oil for demulsification after mixing, and then oil-water-residue three-phase separation is achieved through sedimentation with a settling tank; after treatment, the water content of the dirty oil is smaller than 5%, and the mechanical impurity content of the dirty oil is smaller than 2%. According to the method and device for treating the dirty oil with the sulfur-containing sewage, the dirty oil treatment cost is greatly reduced, the difficulty of subsequent sewage treatment is also greatly reduced, the production cost is reduced, the treatment effect of dirty oil demulsification is improved, and a new way is opened up for the direct and effective utilization of the sulfur-containing sewage. The control means of the device is advanced, units are independent, the technological process is reasonable, the device can be connected through pipelines on various dirty oil treatment occasions of dirty oil, aged dirty oil, heavy dirty oil and the like, the connection mode is simple, and the device is flexible to use.
Owner:QINGDAO BESTSONIC TECH CO LTD

Horizontal multi-point settlement monitoring device and monitoring method based on hydraulic measurement

ActiveCN102607518BOvercoming the disadvantages of measuring elevation changesEasy to implement automatic monitoringHydrostatic levellingDifferential pressureLiquid storage tank
The invention discloses a horizontal multipoint settlement monitoring device and a monitoring method thereof based on hydraulic measurement, which are used for settlement monitoring of buildings such as roadbeds or bridges. The monitoring device comprises a liquid storage tank arranged at a datum point part, monitoring containers, silicon micro differential pressure sensors, settlement collecting instruments and a settlement plate used for anchoring the silicon micro differential pressure sensors, wherein the monitoring containers, the silicon micro differential pressure sensors and the settlement collecting instruments are arranged at the datum point part and monitoring point parts; the liquid storage tank and the monitoring containers are communicated through communication pipes; membranes of the silicon micro differential pressure sensors are in contact with the liquid levels in the monitoring containers; the output ends of the silicon micro differential pressure sensors are connected with the input ends of the settlement collecting instruments; and all the silicon micro differential pressure sensors are communicated with the same air pipe. The monitoring method is achieved via the monitoring device; and according to the monitoring method, the pressure of the monitoring points and the datum point is detected through the silicon micro differential pressure sensors to obtain elevation changes of the monitoring points relative to the datum points, and then settlement changes are obtained through calculation. The monitoring device has the advantages of high measurement precision, good stability and simpleness and convenience in field mounting; and automatic monitoring is easily realized.
Owner:SHIJIAZHUANG TIEDAO UNIV

Advertising board monitoring system based on internet of things

The invention discloses an advertising board monitoring system based on internet of things. The advertising board monitoring system comprises a monitoring box body arranged at a monitoring center; a key display panel is arranged on the monitoring box body, and an indicator lamp and a function key are arranged on the key display panel; a master control board is arranged in the monitoring box body,a MCU, a sensing signal amplifier, a GPRS module, a switch circuit and a battery pack are arranged on the master control board; the input end of the sensing signal amplifier is connected with an acceleration sensor arranged on the advertising board, the output end there of is connected with the MC; the battery pack is electrically connected with the switch circuit, the switch circuit is respectively connected with the MCU, and the acceleration sensor and the key display panel; the key display panel is connected with the MCU, and the MCU is connected with an operator base station through a GPRSmodule. The advertising board monitoring system disclosed by the invention is simple in structure principle, high in intelligence degree, capable of monitoring the dip angle and vibration situation of the advertising board in real time, and sending the data to a cloud data platform to analyze; and the system can timely send early-warning information to related department when the detected data istransfinite.
Owner:南京慧诺信息科技有限公司

Device and method for inputting black-start grid-connection releasing signal into excitation and speed regulator system

The invention discloses a device for inputting a black-start grid-connected signal to an excitation and speed regulator system. The device comprises a battery module, a circuit breaker position inputterminal, a relay module, a circuit breaker position output terminal and a release switch; the device controls the working state of a relay in a relay module through a release switch, a grid-connectedcircuit breaker closing position signal is transmitted to a grid-connected circuit breaker closing signal input channel of an excitation system or a speed regulation system through a common end and anormally closed contact of the relay module, and the release switch is operated to a release position; when the grid-connected circuit breaker is switched on, a normally-closed contact of a relay inthe relay module is disconnected, a switching-on position signal of the grid-connected circuit breaker cannot be input into the excitation system or the speed regulation system, the release switch isoperated to a normal operation position, and the switching-on position signal of the grid-connected circuit breaker can be input into the excitation system or the speed regulation system; the releaseswitch is used for driving the relay module to realize switching between two working modes of normal operation and black start of the unit, so the equipment body safety of an excitation system and a speed regulation system is facilitated, and field use and operation are facilitated; the black-start grid-connection releasing signal is released through simple operation of a worker, so black start can be smoothly carried out, the defects of a conventional manual releasing mode are overcome, and the equipment state adjusting efficiency before black start is improved.
Owner:XIAN THERMAL POWER RES INST CO LTD

High strength composite material for blast furnace cooling walls, preparation method of high strength composite material, and application of high strength composite material in protection of cooling walls

The invention discloses a high strength composite material for blast furnace cooling walls, a preparation method of the high strength composite material, and application of the high strength compositematerial in protection of the cooling wall. The high strength composite material for the blast furnace cooling walls is prepared from a composite fiber material, aluminum nitride micro-powder, high-purity silicon carbide, mullite, alumina powder, silica powder, montmorillonite, sericite, a binding agent and a water reducing agent composite material. Practice proves that the composite material hasgood thermal conductivity, and can transfer heat to the cooling wall in time, so that the hot surface temperature is significantly reduced, and a stable slag crust is formed and does not easily falloff, that is, the slag crust can be well formed on the hot surface of the cooling wall; the high strength composite material can prevent the slag crust from falling off, so that the permanent and stable slag crust is realized, and the service life of the cooling wall is greatly prolonged. The high strength composite material is good in construction workability, is molded by pumping and self-flow forming and is free from vibration, so that a dense high-strength whole can be formed in an embedding groove of the cooling wall. The high strength composite material has a good application prospect inthe protection of the blast furnace cooling walls.
Owner:HENAN HUAXI FURNACE REFRACTORY

High-power ultrasonic high-efficiency defoaming device

The invention relates to a high-efficiency defoaming device, in particular to a high-power ultrasonic high-efficiency defoaming device. Including foam suction pipe, power ultrasonic defoamer shell, jet extractor, compressed air pipe, control system signal line, acoustic energy converter, power ultrasonic defoamer, gas-liquid collector, exhaust pipe, liquid return pipe, foam sensor. Among them, the front end of the shell of the power ultrasonic defoamer is connected to the foam suction pipe, and the rear end is connected to the gas-liquid collector. Several ultrasonic energy converters are welded on the outside, and several power ultrasonic defoamers are installed inside, corresponding to the external ultrasonic energy converters. . The invention has the following advantages: no rotating parts, long service life, no pollution and denaturation during the defoaming process, and does not affect the liquid properties after defoaming; good defoaming effect, high efficiency, and low energy consumption; convenient application and high degree of automation, can Carry out automatic control and network remote control; wide application field, suitable for all areas where foam is generated; completely eliminate the use of defoamers and eliminate the adverse effects caused by the use of defoamers.
Owner:山东润蒙应急救援装备有限公司

Asset positioning data acquisition intelligent terminal and system

The invention discloses an asset positioning data acquisition intelligent terminal and system. The intelligent terminal comprises a cabinet body, a wireless transmission reader-writer, a reader-writerantenna and an RFID tag are installed on the inner wall of the cabinet body, and a wireless transmission antenna is installed on the outer wall of the top of the cabinet body. The wireless transmission reader-writer comprises a reader-writer module and a wireless module; the reader-writer module is connected with a reader-writer antenna, and RFID label information is collected through the reader-writer antenna; the reader-writer module is connected with the wireless module and sends the acquired RFID tag information to the wireless module; the wireless module is connected with the wireless transmission antenna and sends RFID label information to an external base station through the wireless transmission antenna. Remote control, read-write and data acquisition of a real-time RFID system are realized based on a wireless transmission technology, a wireless radio frequency identification communication technology and integration, and intelligentization, high efficiency and precision of wiring network management are realized.
Owner:BEIJING SURESOURCE TECH

Reinforced wire connection device

The invention discloses a reinforced wire connection device and relates to a wire connection hardware fitting. The current-carrying capability of a connection tube is reinforced and a resistance and the loss at the connection position are also greatly reduced. Wires are abutted by a compression joint tube; a reinforcing preformed armour rod is wound and coated outside the wires and the compression joint tube; the reinforcing preformed armour rod is of a helical shape; the helical turning direction of the reinforcing preformed armour rod is the same with the turning direction of the wires; the length of the reinforcing preformed armour rod is 1.5 to 10 times of the length of the compression joint tube; the two parts at both ends of the reinforcing preformed armour rod, which exceed the compression joint tube, have equal lengths; a first helical pitch of the part of the reinforcing preformed armour rod, which corresponds to the compression joint tube, has the same length with the compression joint tube; and the lengths of second helical pitches of the two parts of the reinforcing preformed armour rod, which exceed the compression joint tube, are 5 to 50 percent of the length of the first helical pitch. In the invention, a single-layer preformed armour rod structure is adopted; and the position at the middle part of the reinforced wire connection device, which is contacted with the compression joint tube, is stranded, so that the pitch length of the reinforced wire connection device is approximate to the length of the compression joint tube and the reinforced wire connection device is convenient to install. For improving the anti-corona capability, the end of the preformed armour rod can also be subjected to special treatment, for example, the end of the preformed armour rod is made into a smooth hemisphere or duckbill shape.
Owner:江苏华厦电力成套设备有限公司

High-accuracy automobile engine air inlet air conditioner unit with cold source

The invention relates to a high-accuracy automobile engine air inlet air conditioner unit with a cold source. The high-accuracy automobile engine air inlet air conditioner unit with the cold source is composed of a unit air supply control system and a unit refrigeration bypass control system. When the unit air supply control system runs, part of supplied air is conveyed to an engine for testing through an air supply outlet and the other part of the supplied air is adjusted through an inner circulating air returning inlet, an inner circulating air pipe and an inner circulating air valve and flows out through an inner circulating air returning outlet and then is mixed with fresh air which is filtered by an air filter through a fresh air inlet and via a fresh air valve. When the unit refrigeration bypass control system runs, one circuit of exhaust steam of a compressor is connected with a steam-liquid mixing head through a fin type condenser, a liquid feed stop valve, a drying filter and a liquid supply electromagnetic valve, the other circuit of the exhaust steam is connected with a bypass stop valve, exhaust air bypass volume of the steam-liquid mixing head from the compressor can be adjusted by the bypass stop valve. The high-accuracy automobile engine air inlet air conditioner unit with the cold source has the advantages of being high in response speed, high in control accuracy, high in efficiency, saving in energy, and capable of adapting to different weather conditions all year round, and stable in use.
Owner:广东吉荣空调有限公司

Counterweight guide rail connecting device for elevator

The invention discloses a counterweight guide rail connecting device for an elevator. The two ends of a guide rail cushion board are correspondingly inserted into counterweight guide rails which are to be connected and are fixedly connected or detachably connected with the counterweight guide rails. The guide rail cushion board is fixedly connected with base plates of the counterweight guide railsthrough bolts. The two ends of a connecting plate are correspondingly arranged at the bottoms of the two to-be-connected counterweight guide rails and are fixedly connected with the counterweight guide rails through bolts. The cross section of the connecting plate is of a U-shaped structure and is the same as the cross section of the bottom of each counterweight guide rail. The connecting plate and the guide rail cushion board are each correspondingly provided with a riveting hole; rivets penetrate through the bottom walls of the counterweight guide rails and the riveting holes in order to rivet the connecting plate, the guide rail cushion board and the counterweight guide rails. The connecting plate is connected with each counterweight guide rail through four bolts and two rivets; the two sides of each counterweight guide rail are each uniformly provided with two bolts; and one rivet is arranged between the two corresponding bolts. The counterweight guide rail connecting device for the elevator is simple in overall structure, is convenient to install and use by a worker on the scene and also lowers the production cost and the manufacturing cost.
Owner:VOLKSELEVATOR ELEVATOR CHINA

High-power ultrasonic efficient defoaming device

The invention relates to an efficient defoaming device, in particular to a high-power ultrasonic efficient defoaming device. The high-power ultrasonic efficient defoaming device comprises a foam suction pipe, a power ultrasonic defoamer shell, a jet air ejector, a compressed air pipe, a control system signal line, ultrasonic energy converters, power ultrasonic deformers, a gas-liquid collector, an exhaust pipe, a liquid return pipe and a foam sensor, wherein the front end of the power ultrasonic defoamer shell is connected with the foam suction pipe, and the rear end of the power ultrasonic defoamer shell is connected with the gas-liquid collector; a plurality of ultrasonic energy converters are welded outside the power ultrasonic defoamer shell, and a plurality of power ultrasonic deformers are mounted in the power ultrasonic defoamer shell and correspond to the ultrasonic energy converters at the outside. The high-power ultrasonic efficient defoaming device has the advantages that no rotating component is arranged, the service life is long, no pollution or degeneration exists in the deforming process, and the property of deformed liquid is not influenced; the deforming effect is good, the efficiency is high, and energy consumption is low; the defoaming device is convenient to apply and high in degree of automation and can carry out automatic control and network remote control; the defoaming device is wide in application field and is suitable for all fields of foam production; the use of a defoaming agent is completely avoided, and an adverse effect brought by use of the defoaming agent is eliminated.
Owner:山东润蒙应急救援装备有限公司

Multi-sensor cooperative wind driven generator yaw brake pad wear detection system and method

PendingCN113982862ATimely detection of existing defectsRealize intelligent detection of wear and tearMachines/enginesWind motor monitoringWind drivenControl engineering
The invention discloses a multi-sensor cooperative wind driven generator yaw brake pad wear detection system and method. The system comprises a temperature measurement module, an alarm brake cable switching value detection module, an early warning brake cable switching value detection module, an alarm brake cable analog quantity detection module, an early warning brake cable analog quantity detection module, a PLC control module, a display module and a remote transmission module. The PLC control module is used for measuring the temperature of the brake pad through the preset temperature measurement module, meanwhile, information provided by the early warning brake cable switching value detection module, the alarm brake cable switching value detection module, the early warning brake cable analog quantity detection module and the alarm brake cable analog quantity detection module is researched and judged, the current physical state of the brake pad is comprehensively judged, and the information is displayed through the display module in real time and is transmitted to a wind power plant monitoring system through the remote transmission module, so that intelligent yaw brake pad wear detection based on cooperation of a multi-sensor technology is realized, defects of the brake pad are found in time, and the inspection accuracy and efficiency of the brake pad are improved.
Owner:华能如东八仙角海上风力发电有限责任公司 +2

Body-free coaxial following synergistic perforator

The invention discloses a body-free coaxial following synergistic perforator, which comprises a body-free perforator firing mount and a body-free perforating bullet arranged on the firing mount, wherein the body-free perforating bullet comprises a cartridge case, a powder-type cover and a high explosive, the front end outer wall of the cartridge case is provided with an initiation half slot and apressure wire, the front end inner wall of the cartridge case is provided with a booster hole, the back end of the cartridge case is provided with a fracturing powder box airtightly, and special fracturing powder is poured in the fracturing powder box and is distributed annularly along the inner wall of the fracturing powder box, wherein the special fracturing powder is prepared by evenly mixing ammonium permanganate of which the weight percentage is between 50 and 80 percent and aluminum powder of which the weight percentage is between 20 and 50 percent. The body-free coaxial following synergistic perforator has a simple structure and reliable mounting, the special fracturing powder is initiated and performs pulse fracturing on stratums directly while the powder-type cover forms high-speed jet flow to perform perforation, and the fracturing effect of the perforation is good, thus the body-free coaxial following synergistic perforator is particularly suitable for operations of high-density and low-permeability stratums.
Owner:XIAN RUITONG ENERGY TECH

Variable thermal resistance compensation thermal resistance test method

The invention provides a thermal resistance test system, which includes a temperature-controllable heat sink, a thermal-resistance-varying module, a heat flow sensor, a temperature sensor, and a signal processing and control unit. The system performs a thermal resistance test through a thermal-resistance-varying compensation method; during work, the thermal-resistance-varying module can compensate the system with a heat flow, which is symmetric to a to-be-tested object on the basis of the heat flow sensor, so that heat flow output of the heat flow sensor is zero; and as a result, the thermal resistance value of the to-be-tested object is equal to that of the thermal-resistance-varying module. The compensation method can reduce and eliminate interference and test error, wherein the thermal-resistance-varying module can adapt with different to-be-tested objects having different thermal resistance values by pre-calibrating the varying rule of thermal resistance. The thermal resistance test method and the thermal-resistance-varying compensation method has excellent environment adaptability, short measurement time, high measurement precision and stability and low detection cost, is convenient to install and use on site, and greatly develops the application field of steady-state thermal resistance test methods.
Owner:QINGDAO UNIV

Full-automatic indoor door lock

The invention relates to a full-automatic indoor door lock. The full-automatic indoor door lock comprises a lock plug and a control box, wherein the lock plug comprises a lock plug shell, a lock plugshifting wheel and a lock plug rotating shaft, one end of the lock plug shell is connected with the control box, and the lock plug rotating shaft is arranged on the side, close to the control box, inthe lock plug shell; a driving motor, a bevel gear transmission mechanism and an unlocking rotating shaft are arranged in the control box, the bevel gear transmission mechanism comprises a first largebevel gear, a second large bevel gear, a driving small bevel gear and at least one driven small bevel gear, the first large bevel gear and the second large bevel gear are oppositely arranged at intervals, and the driving small bevel gear and the driven small bevel gear are evenly distributed in the circumferential direction and engaged with the first large bevel gear and the second large bevel gear; and the driving motor is connected with the driving small bevel gear, the unlocking rotating shaft axially penetrates through the first large bevel gear and the second large bevel gear and is in transmission fit with the first large bevel gear, and the lock plug rotating shaft is in transmission connection with the unlocking rotating shaft. The full-automatic indoor door lock has the advantages of simple structure, small volume, low cost, high reliability, long service life and the like.
Owner:杭州小安物联科技有限公司

Non-power wireless communication clamp AC ammeter

The invention discloses a wireless communication clamp alternating current ammeter without a power supply, and relates to clamp alternating current ammeters. The ammeter solves the problem that when a socket is installed to the existing clamp ammeter, short-time outage is required, so that potential safety hazard exists. A measuring coil and a power supply coil are wound on an iron core; the measuring coil, the power supply coil and the iron core are arranged in sheaths; the current signal output terminal of the power supply coil is connected with the current signal input terminal of a rectifying and voltage-stabilizing circuit; the rectifying and voltage-stabilizing signal output terminal of the rectifying and voltage-stabilizing circuit is simultaneously connected with the power supply input terminal of a wireless communication circuit, a power signal input terminal of a single-chip microcomputer circuit and a power signal input terminal of a signal shaping circuit; clamp current signals collected by a clamp current sensor are input into the signal shaping circuit through the measuring coil; the signal output terminal of the signal shaping circuit is connected with the shaping signal input terminal of the single-chip microcomputer circuit; the wireless signal output terminal of the single-chip microcomputer circuit is connected with the signal input terminal of the wireless communication circuit. The ammeter is used for measuring clamping alternating current.
Owner:赵威

High-efficiency enhanced type lead wire continuity device

The invention relates to a high-efficiency enhanced type lead wire continuity device, belonging to a lead wire continuity hardware tool. The high-efficiency enhanced type lead wire continuity device is higher in installation efficiency and comprises a crimping pipe and a reinforced preformed armor rod, a lead wire is abutted by the crimping pipe, the reinforced preformed armor rod is wound and wrapped outside the lead wire and the crimping pipe, 2-5 reinforced preformed armor rods are connected into a whole in parallel and then are wound into a helical shape to form a preformed beam; the helical rotating direction of the preformed beam is the same with the rotating direction of the lead wire, the length of the preformed beam is 1.5-10 times of the length of the crimping pipe, and two ends of the preformed beam, which exceed the crimping pipe, have the same length; and the helical pitch I, which is corresponding to the crimping pipe, of the preformed beam is equal to the length of the crimping pipe, and the helical pitch II of two exceeding parts is 5-50 percent of the helical pitch I. In the invention, the preformed beam structure with single preformed layer and a plurality of parallel reinforced preformed armor rods is adopted, thus the high-efficiency enhanced type lead wire continuity device is convenient for installation. Compared with winding of single reinforced preformed armor rod, the invention has the advantage that the field installation and usage in the invention are more convenient.
Owner:江苏华厦电力成套设备有限公司

High-accuracy automobile engine air inlet air conditioner unit with cold source

The invention relates to a high-accuracy automobile engine air inlet air conditioner unit with a cold source. The high-accuracy automobile engine air inlet air conditioner unit with the cold source is composed of a unit air supply control system and a unit refrigeration bypass control system. When the unit air supply control system runs, part of supplied air is conveyed to an engine for testing through an air supply outlet and the other part of the supplied air is adjusted through an inner circulating air returning inlet, an inner circulating air pipe and an inner circulating air valve and flows out through an inner circulating air returning outlet and then is mixed with fresh air which is filtered by an air filter through a fresh air inlet and via a fresh air valve. When the unit refrigeration bypass control system runs, one circuit of exhaust steam of a compressor is connected with a steam-liquid mixing head through a fin type condenser, a liquid feed stop valve, a drying filter and a liquid supply electromagnetic valve, the other circuit of the exhaust steam is connected with a bypass stop valve, exhaust air bypass volume of the steam-liquid mixing head from the compressor can be adjusted by the bypass stop valve. The high-accuracy automobile engine air inlet air conditioner unit with the cold source has the advantages of being high in response speed, high in control accuracy, high in efficiency, saving in energy, and capable of adapting to different weather conditions all year round, and stable in use.
Owner:广东吉荣空调有限公司
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