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30results about How to "High explosion-proof grade" patented technology
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Vacuum generator
ActiveCN102606544AReduce manufacturing costAdaptableJet pumpsMachines/enginesEngineeringCompressed air
The invention provides a vacuum generator which is characterized in that air around a vacuum generation sleeve is taken away to generate vacuum by adopting compressed air as power and utilizing a Bernoulli principle. The vacuum generator comprises the vacuum generation sleeve, a sleeve shell and a vacuum generator base. The compressed air enters from a compressed air inlet of the base and drives the air in the vacuum generation sleeve to flow in the axial direction, so that the air pressure outside the sleeve is larger than that inside the sleeve; and the air outside flows into the sleeve through a through hole on the side wall of the sleeve and then flows out from a compressed air outlet of the sleeve (or the sleeve shell). The process is simply described as follows: the air outside is taken away by the compressed air in the vacuum generation sleeve to generate the vacuum.
Owner:王伟光
Process and complete-set apparatus for oil gas recovery and treatment
InactiveCN107297141AMeet emission targetsEfficient recyclingDispersed particle separationGas phaseCatalytic oxidation
The invention relates to a process and complete-set apparatus for oil gas recovery and treatment. The complete-set apparatus for oil gas recovery and treatment comprises an oil gas collection device, a buffer gas-mixing tank, a vacuum pump, membrane assembly, a compression and condensation unit, a gas-liquid separation tank, a tube array heat exchanger, and a catalytic oxidation reactor. The process comprises that oil gases successively enter the buffer gas-mixing tank, a compressor and the compression and condensation unit; the compressed and condensed oil gases enter the gas-liquid separation tank for gas-liquid separation, and a gas phase is subjected to membrane separation in the membrane assembly; gases located at the permeate side of the membrane assembly pass through the vacuum pump, and then is compressed and condensed again; the concentration of the oil gases in gases located at the retentate side of the membrane assembly is reduced, and discharging is directly performed after the oil gas concentration reaches a standard; and if the concentration of the oil gases in the gases located at the retentate side still exceeds the standard, the gases enter the tube array heat exchanger to exchange heat with oil gases which are subjected to catalytic oxidation in the catalytic oxidation reactor, and the gases subjected to heat exchange enter the catalytic oxidation reactor, catalytic oxidation is performed under the action of a catalyst for removing organic materials in the gases, and at last discharging is performed after the oil gas concentration reaches the standard. The process and complete-set apparatus for oil gas recovery and treatment realize the high-efficiency recovery and treatment of the oil gases, and have certain industrial application prospect.
Owner:CHINA PETROLEUM & CHEM CORP +1
A light positive pressure explosion-proof type box-type generator
PendingCN109067069AAvoid it happening againHigh explosion-proof gradeClimate change adaptationSupports/enclosures/casingsFrostPositive pressure
A light positive pressure explosion-proof box-type generator belongs to the technical field of box-type generator and includes a box frame, A front end cap bearing for supporting that front end of therotate shaft is mounted on the shaft extension end, A rear end cap bearing for supporting the rear end of the rotating shaft is mounted on the non-shaft extension end, A positive pressure purging device is fixed on the outer side of the box-type frame, a pressure relief unit, an air source inlet pipe and an external positive pressure pipe are arranged on the positive pressure purging device, a connecting flange is fixed on the end of the air source inlet pipe, a positive pressure purging pipe is laid inside the box-type frame, and an inlet port of the positive pressure purging pipe is communicated with the external positive pressure pipe; A carbon seal ring is arranged between the shaft extension end rotating shaft and the front end cover; A rotor wireless grounding detection device is installed at the non-shaft extension end; An explosion-proof heater for moisture-proof and frost-proof is installed in the box-type machine frame; Through the improvement and the experimental verification, the explosion-proof authentication is obtained, and the purpose of safe operation of the generator in an explosion-proof environment is realized.
Owner:WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD +1
High-effective organic waste gas recovery processing method and complete equipment
ActiveCN107413173AHigh recovery rateHigh explosion-proof gradeGas treatmentDispersed particle separationHigh concentrationBuffer tank
The invention relates to a high-effective organic waste gas recovery processing method and complete equipment. The complete equipment includes: an organic waste gas collection apparatus, a gas storage tank, a buffer tank, a primary membrane unit, an active carbon adsorption unit, a vacuum pump, a gas-liquid separation tank, a compression condensing unit, a secondary membrane unit, a low temperature catalytic oxidizing reactor, and a tubular heat exchanger. Through the two-stage membrane as a core technology, advantages that a membrane process is high in efficient, is continuous, has high recover rate and high safety and is suitable for high-concentration organic waste gas are achieved, thus recovering the recoverable components in the waste gas; in addition, with the low temperature catalytic oxidization technology, an advantage of deep processing thereof is achieved, so that a problem of accumulation of light-hydrocarbon substances is overcome. The processing method and complete equipment not only high-effectively recover valuable organic substances, but also can perform deep processing to the organic waste gas with satisfaction of strict requirements on safety production in petrochemical enterprises. Through the deep processing to the organic waste gas, discharged organic waste gas can reach national emission standards.
Owner:CHINA PETROLEUM & CHEM CORP +1
Built-in bottom filling anti-overflow control device for canned oil tank
ActiveCN110406832AImprove reliabilityHigh explosion-proof gradeLarge containersEngineeringPilot valve
The invention provides a built-in bottom filling anti-overflow control device for a canned oil tank. The built-in bottom filling anti-overflow control device comprises a hydraulic control main valve,a floater guide valve and a connecting pipe, wherein the hydraulic control main valve is arranged in an inlet pipeline oil tank at the bottom of the oil tank, the floater guide valve is arranged at the top of the oil tank, the floater guide valve communicates with the hydraulic control main valve through a connecting pipe, and the liquid control main valve realizes opening and closing of the valvethrough the inlet and outlet pressure difference; when the liquid level is lower than the set height, the floater guide valve is opened, and the hydraulic control main valve is automatically opened under the pressure difference effect; when the liquid level reaches the set height, the floater floats to enable the floater pilot valve to be closed, and the hydraulic control main valve is automatically closed, namely, the hydraulic control main valve realizes pilot control through the floater pilot valve, and when the oil in the oil tank reaches the set volume height, the floater pilot valve isclosed, so that the hydraulic control main valve is controlled to be closed to prevent the oil tank from overflowing.
Owner:LOGISTICAL ENGINEERING UNIVERSITY OF PLA +1
Explosion-proof and safety-increased type composite explosion-proof motor with current transformer
ActiveCN105515258AReduce weightImprove security levelSupports/enclosures/casingsShort circuit protectionControl theory
The invention discloses an explosion-proof and safety-increased type composite explosion-proof motor with a current transformer. An annular junction box support is welded on the base of an explosion-proof motor body. The annular junction box support is provided with an explosion-proof cover plate. The explosion-proof cover plate is connected with a safety-increased type current transformer junction box via a terminal box base. The explosion-proof cover plate is provided with an explosion-proof cable joint. The terminal box base, the explosion-proof cover plate, the explosion-proof cable joint and the base together form an explosion-proof housing of the motor. In this way, through arranging the current transformer as a measurement element on the explosion-proof motor body for realizing the differential protection, the interphase short-circuit protection function is effectively realized. Therefore, the security level of the explosion-proof motor is effectively realized. The motor is simple in structure, convenient to install and maintain, good in security and reliability and high in explosion-proof level. The technical scheme of the invention can be effectively applied to the explosion-proof motor with the power thereof larger than 2000 kW. The cost of the motor is greatly reduced.
Owner:WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
Explosion-proof type excess material recycling powder spraying room
PendingCN111495646AReduce powder contentPrevent overflowSpraying apparatusFire rescueMetallurgyAir pump
The invention relates to the technical field of excess material recycling powder spraying equipment, and provides an explosion-proof type excess material recycling powder spraying room. The explosion-proof type excess material recycling powder spraying room comprises a powder spraying room body, a cyclone separator is connected to a side wall of the powder spraying room body, and the other end ofthe cyclone separator is connected with a filter cartridge dust remover; and the powder spraying room body comprises a room body, an overhead underframe is arranged on the inner bottom wall of the room body, the other end of the overhead underframe is connected with a powder pumping pipe in a penetrating mode, an air pump is arranged in the powder pumping pipe, and the other end of the powder pumping pipe is connected with the cyclone separator. According to the explosion-proof type excess material recycling powder spraying room, the defects in the prior art are overcome, the design is reasonable, the structure is compact, and the problem that powder mixed gas of an existing powder spraying room is large in concentration and inconvenient to recycle is solved; and through simple structuralcombination, powder in the powder spraying room is recycled through multi-step operation, meanwhile, the purification effect of exhausted gas is good, the powder spraying room is more friendly to theenvironment, the explosion-proof grade is high, the safety performance is good, and the powder spraying room has quite high practicability.
Owner:无锡威固涂装设备有限公司
Gas pressure chamber with protection function
InactiveCN103398044APrevent splashPrevent burstFluid-pressure actuator testingPressure vesselsEngineeringProtection layer
The invention discloses a gas pressure chamber with a protection function. The gas pressure chamber is applied to an oil sample feeding system of an automatic oil particle counter and comprises a barrel body, an upper sealing cover and a lower sealing cover. The barrel body is wrapped with a metal protection layer, the upper sealing cover and the lower sealing cover seal and cover the barrel body and the metal protection layer, an outer sheath is arranged outside the metal protection layer, a buffer gap is formed between the metal protection layer and the outer sheath, a pressure releasing slit is formed between the outer sheath and the upper sealing cover, an explosion-proof membrane can be further pasted outside the barrel body, and the metal protection layer is attached to the explosion-proof membrane. The gas pressure chamber with the protection function can effectively prevent debris of the glass barrel body from splashing outwards, has multiple functions, improves explosion-proof grade of the barrel body and improves using safety of the automatic oil particle counter.
Owner:朱子新
A steam purging tail gas treatment process and complete set of equipment
ActiveCN107297085BOvercome the disadvantages of not being able to meet the application requirements of refining and chemical enterprisesOvercome the drawbacks of application requirementsDispersed particle separationVapor condensationCatalytic oxidationPetrochemical
Owner:CHINA PETROLEUM & CHEM CORP +1
Capacitor aluminum shell automatic production line processing technology
The invention discloses a capacitor aluminum shell automatic production line processing technology. The processing technology comprises the following steps: 1, heating and feeding: heating an aluminum shell blank to 200-230 DEG C by using a heat treatment furnace, taking out the aluminum shell blank, placing the aluminum shell blank in a tray, and standing for 1-2 minutes. The capacitor aluminum shell adopts the processing technology of feeding, punching, cutting, explosion prevention, stress relief and cleaning. In the feeding process, the aluminum shell blank is preheated, so that punch forming and deformation stress reduction in the punching process are facilitated; in the explosion prevention process, an explosion prevention layer made of epoxy resin is embedded in the aluminum shell, so the explosion prevention effect is further improved; in the stress relief process, the aluminum shell embedded with the explosion-proof layer is subjected to stress relief annealing at 450-490 DEG C, so that the internal stress of the aluminum shell can be greatly reduced, the deformation condition in the subsequent use process is avoided; and meanwhile, an oxide layer with a certain thickness is generated on the surface of the aluminum shell, so the explosion-proof grade of the aluminum shell is further improved.
Owner:NANTONG XINLIAN ELECTRONICS PRODS
LED explosion-proof portable movable lamp
ActiveCN111189037AHigh explosion-proof gradeReduce usageLighting applicationsMechanical apparatusComputer hardwareControl cell
The invention discloses a LED explosion-proof portable movable lamp which comprises a box assembly, a lamp head assembly and a lifting assembly. One end of the lifting assembly is connected to the boxassembly, and the other end of the lifting assembly is connected to the lamp head assembly. The box assembly includes a shell and a flameproof cavity formed in the shell, a battery pack and a drive control circuit are installed in the flameproof cavity, and the drive control circuit includes a controller, a spotlight control unit connected to the controller and a floodlight control unit. The lamphead assembly includes a spotlight group and a light board of a floodlight group, and a connection line of the light board penetrates through the lifting assembly and is connected to the drive control circuit. The LED explosion-proof portable movable lamp is high in explosion-proof level and light in weight, meanwhile, switching of a spotlight and the floodlight can be realized, in addition, thelamp head assembly can be folded and collected on the box assembly, and the structure is compact and carrying is convenient.
Owner:SHENZHEN OCEANS KING LIGHTING ENG CO LTD +2
Sensor detection device
PendingCN112945289AHas the effect of sealing protectionEasy maintenance and operationWork measurementTorque measurementProtection mechanismData interface
The invention discloses a sensor detection device disclosed by the present invention. The sensor detection device comprises a detection device main body, a sensor and a sensing detection system, wherein an outer wall of the detection device main body is fixedly connected with a protection shell, and an outer surface of a front end of the detection device main body is provided with a control machine, a display panel and a data interface, a connecting wire is arranged between the detection device main body and the sensor, and two sides of the sensor are fixedly connected with mounting seats. The sensor detection device provided by the invention is provided with the sealed disassembly and assembly maintenance mechanism, the reinforced protection mechanism and the sensing detection system, so the device can be conveniently maintained and operated, disassembly and assembly do not need tools, the device is simpler, the device has a sealed protection effect, the protection effect is excellent, the use intensity is increased, the explosion-proof performance is better, the process rule of the working performance of the equipment can be observed according to the magnitude of the torque force, and problems can be found early, so a purpose of online measurement and control of the equipment is achieved, and a better use prospect is brought.
Owner:徐州淮海电子传感工程研究所有限公司
Oil unloading device vehicle for railway oil tank and oil transportation method thereof
InactiveCN101786590BEasy to observeImprove emergency support capabilitiesLiquid transferring devicesDelivery vehicleFuel tank
Owner:BEIJING SANXING AUTOMOBILE
Environmentally-friendly fermenting tank capable of reducing heat loss
PendingCN108531330AHigh explosion-proof gradeExtend your lifeAlcoholic beverage preparationNoise pollutionElectric energy
The invention discloses an environmentally-friendly fermenting tank capable of reducing heat loss. The fermenting tank comprises a tank body, the upper side of the tank body is provided with a feed port, a supporting bracket, a motor, a pressure sensor and a temperature sensor, the supporting bracket is arranged at the lower side of the motor, the feed port is formed in one side of the supportingbracket, the pressure sensor and the temperature sensor are arranged at the other side of the supporting bracket, the motor is connected with a stirring shaft inside the tank body, the stirring shaftis provided with stirring blades and heating devices, an insulating layer and solid kiln mud are arranged on the inner wall of the tank body, the insulating layer is arranged between the tank body andthe solid kiln mud, a sampling port is formed in the tank body, and the sampling port is installed in the tank body through a fixing device. According to the fermenting tank, the heating devices areliquid electric heaters, the heating devices are symmetrically arranged on both sides of the stirring shaft, electric energy can be directly converted into heat energy, harmful substances are not generated, and the fermenting tank has no noise pollution, high explosion-proof grade and long service life.
Owner:德清县剑池酿酒厂
Well cementation equipment
ActiveCN114263443ASolution to short lifeReduce maintenance frequencySealing/packingMarine engineeringWell cementing
The invention discloses well cementation equipment. The well cementation equipment comprises a cabin body, a cabin door, a well cementation pry, a supply system and a discharge system, the cabin door is connected with the cabin body, the cabin door and the cabin body form a sealed space, the well cementation pry is arranged in the sealed space, the supply system and the discharge system are respectively connected with the well cementation pry, and at least one part of the supply system and at least one part of the discharge system are both located in the sealed space. According to the scheme, the service life of well cementation equipment can be prolonged, and the use cost and purchase cost of the well cementation equipment are reduced.
Owner:YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD
Encapsulated low-temperature explosion-proof coil
InactiveCN109780302AReduce temperature riseGreat suctionOperating means/releasing devices for valvesCoilsSolderingEnergy Saving Module
The invention relates to the technical field of explosion-proof electromagnetic valves, and particularly relates to an encapsulated low-temperature explosion-proof coil. The encapsulated low-temperature explosion-proof coil comprises a low-temperature explosion-proof coil body; the low-temperature explosion-proof coil body comprises a low-power consumption energy-saving module. The input end of the low-power consumption energy-saving module is in tin soldering connection with a leader cable externally connected; the output end of the low-power consumption energy-saving module is in tin soldering connection with a winding of a coil winding component; and the low-power consumption energy-saving module is placed in a cavity of an explosion-proof metal housing main body, and then is encapsulated by epoxy resin fillers. According to the encapsulated low-temperature explosion-proof coil, the low-power consumption energy-saving module is additionally adopted, is arranged in a metal housing, and then is encapsulated by epoxy resin. The encapsulated low-temperature explosion-proof coil has the advantages of low temperature rise, large suction force, high explosion-proof grade and the like,and the problem that the electromagnetic valve fitting with the encapsulated explosion-proof coil for use is low in opening pressure and limited in usable range due to the fact that the encapsulated explosion-proof coil in a current market is high in temperature rise, small in suction force and low in explosion-proof grade is solved.
Owner:YUYAO NO 4 INSTR FACTORY ZJEJIANG
Hydrogen storage cylinder for explosion-proof hydrogen fuel cell automobile and manufacturing method thereof
ActiveCN114033962AAvoid safety hazardsRealize the same material interface connectionVessel manufacturingVessel geometry/arrangement/sizeEpoxyFiber
The invention relates to a hydrogen storage cylinder for an explosion-proof hydrogen fuel cell automobile and a manufacturing method thereof. The method comprises the following steps: 1 ultrahigh molecular weight polyethylene fibers impregnated with a surface active coupling agent is wound and pre-cured on the polyethylene liner of the hydrogen storage cylinder, and a first interface layer is formed on the plastic liner of the hydrogen storage cylinder; 2 a pressure sensor is attached to the surface of the first interface layer, then ultra-high molecular weight polyethylene fibers impregnated with low-temperature curing epoxy resin are wound on the first interface layer containing the pressure sensor and are pre-cured at the same time, and a second interface layer is formed on the plastic inner container of the hydrogen storage cylinder; and 3 the hydrogen storage cylinder obtained in the step 2 is cured for the first time, then carbon fibers impregnated with medium-temperature cured epoxy resin are wound on the surface of the obtained hydrogen storage cylinder, and finally secondary curing is conducted to obtain the hydrogen storage cylinder for the hydrogen fuel cell automobile, which is high in anti-explosion grade, light in weight, high in strength and good in safety.
Owner:陕西碳能新材料有限责任公司
Oil-water interface measuring instrument based on photoelectric sensing
ActiveCN110779593AHigh sensitivityWide detection rangeMachines/enginesLevel indicatorsMeasuring instrumentHemt circuits
The invention relates to an oil-water interface measuring instrument based on photoelectric sensing. The oil-water interface measuring instrument comprises a photoelectric sensor measuring head, a measuring tape and a measuring tape data reading and displaying mechanism. The photoelectric sensor measuring head is arranged at one end of the measuring tape; the measuring tape is arranged in the measuring tape data reading and displaying mechanism; and the measuring tape data reading and displaying mechanism records the rotation circle speed of the measuring tape through an encoder, and then ta single-chip microcomputer calculates and displays the rotation numerical value of the measuring tape. A measuring circuit is arranged between a cylindrical shell and a hollow glass tube in the photoelectric sensor measuring head. In the measuring circuit, a light emitting tube is arranged in a light emitting area and two receiving tubes are arranged in a light receiving area to form a photoelectricsensor group. When the sensor group is put down to an oil-water interface, light is refracted and scattered to cause the change of light of two light ray receiving tubes, thereby determining whetherthe interface is changed or not. Therefore, the high-precision detection of the oil-water interface and automatic reading of the interface distance are realized; and compared with traditional equipment, the oil-water interface measuring instrument has the advantages of being high in measurement precision, capable of realizing full-automatic reading and easy to operate.
Owner:JIANGSU UNIV OF SCI & TECH
Vacuum generator
ActiveCN102606544BReduce manufacturing costAdaptableJet pumpsMachines/enginesEngineeringCompressed air
The invention provides a vacuum generator which is characterized in that air around a vacuum generation sleeve is taken away to generate vacuum by adopting compressed air as power and utilizing a Bernoulli principle. The vacuum generator comprises the vacuum generation sleeve, a sleeve shell and a vacuum generator base. The compressed air enters from a compressed air inlet of the base and drives the air in the vacuum generation sleeve to flow in the axial direction, so that the air pressure outside the sleeve is larger than that inside the sleeve; and the air outside flows into the sleeve through a through hole on the side wall of the sleeve and then flows out from a compressed air outlet of the sleeve (or the sleeve shell). The process is simply described as follows: the air outside is taken away by the compressed air in the vacuum generation sleeve to generate the vacuum.
Owner:王伟光
A photoelectric switch explosion-proof housing
ActiveCN108899232BCompact structureSimple structureElectronic switchingElectric switchesINTRODUCTION deviceMechanical engineering
The invention discloses an explosion-proof shell body of a photoelectric switch. The explosion-proof shell body comprises a supporting seat and an explosion-proof assembly, wherein a light-transmitting hole and a mounting hole, which are communicated with each other, are coaxially formed in the supporting seat; the mounting hole is internally provided with a transparent part for light transmissionof the photoelectric switch; the explosion-proof assembly comprises a transparent part pressing sleeve, a main shell body and a cable introduction device, which are arranged in sequence from front toback; the transparent part pressing sleeve is in thread connection into the mounting hole; a front end of the transparent part pressing sleeve is used for abutting a transparent part on a rear end face of the light-transmitting hole; the photoelectric switch is mounted in the transparent part pressing sleeve; the front end of the main shell body is detachably connected into the mounting hole; a rear end of the main shell bod is detachably connected with the front end of the cable introduction device; the cable introduction device is used for introducing and fixing a cable connected with the photoelectric switch. The explosion-proof shell body of the photoelectric switch is simple and compact in structure and can meet protection of the photoelectric switch under a limited space; the explosion-proof shell body is convenient to dismount and mount, and has a high explosion-proof grade and extremely strong practicability.
Owner:YANSHAN UNIV
Positive pressure inflation explosion-proof interlock device for industrial chromatograph
ActiveCN107102600BHigh explosion-proof gradeCompact structureProgramme controlComputer controlElectricityTime delays
Owner:天华化工机械及自动化研究设计院有限公司苏州研究所
A high-efficiency organic waste gas recovery and treatment method and complete set of equipment
ActiveCN107413173BEfficient recyclingHigh recovery rateGas treatmentDispersed particle separationActivated carbonBuffer tank
The invention relates to a high-effective organic waste gas recovery processing method and complete equipment. The complete equipment includes: an organic waste gas collection apparatus, a gas storage tank, a buffer tank, a primary membrane unit, an active carbon adsorption unit, a vacuum pump, a gas-liquid separation tank, a compression condensing unit, a secondary membrane unit, a low temperature catalytic oxidizing reactor, and a tubular heat exchanger. Through the two-stage membrane as a core technology, advantages that a membrane process is high in efficient, is continuous, has high recover rate and high safety and is suitable for high-concentration organic waste gas are achieved, thus recovering the recoverable components in the waste gas; in addition, with the low temperature catalytic oxidization technology, an advantage of deep processing thereof is achieved, so that a problem of accumulation of light-hydrocarbon substances is overcome. The processing method and complete equipment not only high-effectively recover valuable organic substances, but also can perform deep processing to the organic waste gas with satisfaction of strict requirements on safety production in petrochemical enterprises. Through the deep processing to the organic waste gas, discharged organic waste gas can reach national emission standards.
Owner:CHINA PETROLEUM & CHEM CORP +1
Slag and water discharging filtering device for mining
PendingCN112807828AImprove filtering effectHigh explosion-proof gradeFiltration separationWater dischargeSlag
The utility model relates to a slag and water discharging filtering device for mining. The device comprises an underframe, a first filtering barrel and a second filtering barrel, wherein one ends of the first filtering barrel and the second filtering barrel are communicated and connected with a water outlet pipe, the other ends of the first filtering barrel and the second filtering barrel are respectively communicated with a first reversing valve and a second reversing valve, the first reversing valve and the second reversing valve are communicated and connected with an external water source, the first reversing valve and the second reversing valve are respectively provided with a first blow-off pipe and a second blow-off pipe, the first reversing valve is provided with a first pneumatic actuator for controlling the first filtering barrel to be communicated with any one of a water inlet pipe and the first blow-off pipe, a second pneumatic actuator for controlling the second filtering barrel to be communicated with any one of the water inlet pipe and the second blow-off pipe is mounted on the second reversing valve, a control box is arranged on the bottom frame, and a first main machine pneumatically connected with the first pneumatic actuator and a second main machine pneumatically connected with the second pneumatic actuator are arranged in the control box. According to the invention, the filtering effect is improved, the cost is saved, the service life is prolonged, the explosion-proof grade is high, and the device can be safely used under all mines.
Owner:常熟市通防电器有限公司
High-protection-level explosive-proof transmission encoder assembly
PendingCN111006705ALow costBlock deliveryMeasurement apparatus housingsStructural associationCouplingElectric machinery
The invention, which belongs to the technical field of encoders, discloses a high-protection-level flameproof transmission encoder assembly, thereby solving the problems of complex structure, high cost and difficulty in guaranteeing coaxiality because a coupling for transmission and a transition flange for positioning need to be added between a motor small shaft and an encoder small shaft when theexisting encoder is used. The encoder assembly comprises a transition shaft, an encoder, a transition shaft sleeve, a shell and an explosion-proof sealing and locking joint. The encoder and the transition shaft sleeve are arranged in the shell; a threaded hole is formed in the shell; the explosion-proof sealing and locking joint is arranged in the threaded hole in the shell; the explosion-proof sealing and locking joint is in sealing fit with the shell; a wire on the encoder penetrates out of the shell from the explosion-proof sealing and locking joint; the transition shaft sleeve is fixedlyconnected with the shell; a first matching face is arranged between the interior of the shell and the transition shaft sleeve, and the gap between the first matching face of the shell and the first matching face of the transition shaft sleeve is 0 to 0.104 mm. The high-protection-level flameproof transmission encoder assembly is suitable for being used in explosion-proof occasions.
Owner:JIAMUSI ELECTRIC MACHINE
Explosion-proof shell body of photoelectric switch
ActiveCN108899232ACompact structureSimple structureElectronic switchingElectric switchesEngineeringINTRODUCTION device
The invention discloses an explosion-proof shell body of a photoelectric switch. The explosion-proof shell body comprises a supporting seat and an explosion-proof assembly, wherein a light-transmitting hole and a mounting hole, which are communicated with each other, are coaxially formed in the supporting seat; the mounting hole is internally provided with a transparent part for light transmissionof the photoelectric switch; the explosion-proof assembly comprises a transparent part pressing sleeve, a main shell body and a cable introduction device, which are arranged in sequence from front toback; the transparent part pressing sleeve is in thread connection into the mounting hole; a front end of the transparent part pressing sleeve is used for abutting a transparent part on a rear end face of the light-transmitting hole; the photoelectric switch is mounted in the transparent part pressing sleeve; the front end of the main shell body is detachably connected into the mounting hole; a rear end of the main shell bod is detachably connected with the front end of the cable introduction device; the cable introduction device is used for introducing and fixing a cable connected with the photoelectric switch. The explosion-proof shell body of the photoelectric switch is simple and compact in structure and can meet protection of the photoelectric switch under a limited space; the explosion-proof shell body is convenient to dismount and mount, and has a high explosion-proof grade and extremely strong practicability.
Owner:YANSHAN UNIV
Battery current-limiting protection circuit and battery current-limiting protecting method
PendingCN108092254AHigh explosion-proof gradeReduce electrical power consumptionArrangements responsive to excess currentEmergency protective arrangements for limiting excess voltage/currentMOSFETDifferential amplifier
The invention provides a battery current-limiting protection circuit and a battery current-limiting protecting method. The battery current-limiting protection circuit comprises a current-limiting resistor, a reference voltage generator, a differential amplifier and an MOSFET, wherein the current-limiting resistor is in series connection with a battery, the reference voltage generator is used for generating a reference voltage signal, and the differential amplifier is connected with the current-limiting resistor and the reference voltage generator, and voltage drop on the current-limiting resistor and the reference voltage signal serve as input for differential amplification; the MOSFET is connected with the output end of the current-limiting resistor and the output end of the differentialamplifier, and controls battery output current flowing through the current-limiting resistor based on output of the differential amplifier. By means of the battery current-limiting protection circuitconstituted by full discrete components, when the circuit has a low sampling current-limiting resistance value, the current sampling signal resolution precision and protection circuit control which can only be achieved by an integrated circuit amplifier in the prior art are also achieved by the battery current-limiting protection circuit; meanwhile, the safety of the protection circuit is improved, and the higher anti-explosion safety protection level is achieved.
Owner:北京拓盛智联技术有限公司
Aircraft fuel oil guaranteeing device
PendingCN110979710AFast fuel guaranteeSolving Fast Fuel Guarantee ProblemsPositive displacement pump componentsRefining by filtrationData informationLand transport
The invention discloses an aircraft fuel oil guaranteeing device which comprises a power module, a pumping filtration module and an accessory module which are connected in sequence. The power module is used for supplying power to the aircraft fuel oil guaranteeing device, collecting and displaying working data information of the aircraft fuel oil guaranteeing device and uploading the working datainformation to a cloud or a server. The pumping filtration module is used for pumping fuel oil from an external oil storage tank or an oil bag under the driving of the power module and carrying out water separation and impurity filtration on the fuel oil. The accessory module is used for supplying the fuel oil subjected to water separation and impurity filtration by the pumping filtration module to the aircraft, so that the fuel oil of the aircraft is guaranteed. A modular design is adopted, all the modules are small in size and light in weight, each module can be loaded through a portable transport box, land transport, sea transport and air transport are directly adopted, various transport requirements can be met, and the purpose of rapid fuel oil guarantee of the aircraft in the all-terrain environment or under the condition of lack of supply facilities is effectively achieved.
Owner:HAIFENG NAVIGATION TECH
A flameproof + increased safety composite explosion-proof motor with current transformer
ActiveCN105515258BReduce weightImprove security levelSupports/enclosures/casingsShort circuit protectionEngineering
Owner:WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
Novel explosion-proof lamp
InactiveCN102352998BLow costAvoid it happening againLighting applicationsPoint-like light sourceBaseboardEngineering
Owner:ZHONGSHAN LEDCENT OPTOELECTRONICS TECH
A Measuring Instrument for Oil-Water Interface Based on Photoelectric Sensing
ActiveCN110779593BHigh sensitivityWide detection rangeMachines/enginesLevel indicatorsHemt circuitsEngineering
An oil-water interface measuring instrument based on photoelectric sensing, comprising a photoelectric sensor measuring head, a tape measure and a tape measure data reading and display mechanism; Take the display mechanism to record the rotation speed of the tape measure through the encoder, and then calculate and display the value of the tape measure rotation by the single chip computer; a measuring circuit is arranged between the cylindrical shell and the hollow glass tube in the photoelectric sensor measuring head; in the measuring circuit, the light emission There is one light-emitting tube in the light-receiving area, and two receiving tubes in the light-receiving area, forming a photoelectric sensor group; when the sensor group is placed at the oil-water interface, the light will be refracted and scattered, resulting in the light of the two light-receiving tubes will change, thus Determine if there is an interface change. The invention realizes the high-precision detection of the oil-water interface and the automatic reading of the interface distance, and has the characteristics of high measurement accuracy, automatic reading and simple operation compared with the traditional equipment.
Owner:JIANGSU UNIV OF SCI & TECH
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