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35results about How to "Balanced differential pressure" patented technology
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Explosion-proof valve, battery pack and vehicle
ActiveCN112133865ABalanced differential pressureAvoid breakingCell component detailsBatteriesMechanical engineeringBattery cell
The invention relates to an explosion-proof valve, a battery pack and a vehicle, the explosion-proof valve comprises an explosion-proof valve body and a pressure relief structure, a first exhaust passage is formed on the explosion-proof valve body, and a second exhaust passage used for communicating with the interior of a battery pack shell is formed on the pressure relief structure; and the pressure relief structure is movably connected to the explosion-proof valve body so that the first exhaust channel can be selectively communicated with the interior of the battery pack shell. Under the first working condition that the air pressure in the battery pack shell is smaller than the pressure threshold value, the pressure relief structure blocks the first exhaust channel, the interior of the battery pack shell communicates with the outside atmosphere through the second exhaust channel, and under the second working condition that the air pressure in the battery pack shell is larger than orequal to the pressure threshold value, the pressure relief structure moves in the direction away from the first exhaust channel under the action of air pressure in the battery pack shell, so that theinterior of the battery pack shell is communicated with the outside atmosphere through the first exhaust channel and the second exhaust channel, and the explosion-proof valve is high in reliability and safety coefficient.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD
Camera
PendingCN108241245AImprove sealingImprove dustproof effectTelevision system detailsColor television detailsComputer graphics (images)Dust particles
The invention relates to the technical field of electronic equipment and discloses a camera, wherein the sealing property and the dustproof property of the camera are improved, so that the product quality of the camera is improved. The at least two parts of the camera are connected through a sealing part. According to the camera provided by the embodiment of the invention, the at least two parts of the camera are connected through the sealing part, so that the sealing property and the dustproof property of the camera can be improved, the problem that the camera shooting effect is affected as external vapor and dust particles enter the camera is improved, and therefore, the product quality of the camera is improved.
Owner:BEIJING TUSEN ZHITU TECH CO LTD
Waterproof housing of apparatus
InactiveCN1394158ABalanced differential pressureBrushesCell component detailsDifferential pressureEngineering
The invention relates to a waterproof housing (1) of an apparatus, for example an electrically rechargeable shaving device, which housing (1) is provided with at least one opening (3a,3b) in a wall (1a), which opening is sealed off by means of a foil (4) permitting the equalization of a pressure difference between the inside of the housing and the outer atmosphere. In order to provide means for the equalization of a pressure difference suitable for all kinds of apparatuses, which means are not susceptible of contamination and at the same time are capable of equalizing pressure differences, the foil (4) is elastically deformable and provided with at least one incision (8,9) of which the cutting edges can yield owing to a pressure difference across said foil.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
High-pressure gas particulate matter sampling device
PendingCN111504732AAvoid mixingBalanced differential pressureWithdrawing sample devicesParticle suspension analysisParticulatesThermodynamics
The invention relates to the field of gas detection, and especially relates to a high-pressure gas particulate matter sampling device. The device comprises a high-pressure gas filtering chamber, wherein two ends of the high-pressure gas filtering chamber are respectively provided with a sampler interface and a discharge port which are communicated with the interior of the high-pressure gas filtering chamber, a filtering membrane is arranged in the high-pressure gas filtering chamber, and the high-pressure gas filtering chamber is respectively provided with replacement gas interfaces which arepositioned on two sides of the filtering membrane and are communicated with the interior of the high-pressure gas filtering chamber. Residual hydrogen can be purged by nitrogen through the displacer interface, so hydrogen and air are prevented from being mixed, the concentration critical value of combustion explosion is reached, and the safety is higher; in addition, as a bypass, the pressure difference before and after the filter membrane can be balanced, and the filter membrane rupture risk is reduced; besides, the sampling process of the high-pressure gas particulate matter sampling devicecompletely conforms to the real filling process, so the test result is completely consistent with the real situation, and the real effectiveness of data is ensured.
Owner:佛山绿色发展创新研究院
Inward depressurizing high pressure soft sealing ball valve
InactiveCN102889394AReduce pressure gapReduce offset distancePlug valvesValve housingsLocking mechanismEngineering
The invention relates to a valve, and particularly relates to an inward depressurizing high pressure soft sealing ball valve. The inward depressurizing high pressure soft sealing ball valve comprises a valve body, a valve cover, a valve rod, a ball body, a valve seat, a swing positioning connecting rod, a platen handle, an operating handle, a locking mechanism C, an inclined wedging mechanism E and a decompression runner L, wherein the swing positioning connecting rod is connected with the platen handle; the swing positioning connecting rod is driven by the platen handle to carry out the swing motion; a slider is driven by the inclined wedging mechanism E of a sinker rod to push a steel ball and a spring to open a check valve; the valve body is internally provided with a pressure release system; the pressure release system pushes the slider F and the steel ball G by the inclined wedging mechanism of the external sinker rod E so that a bypass pipe L can be communicated with a bypass pipe B; and the built-in pressure release system can realize the connection of the automatic operation of manual operation, power drive, pneumatic drive or hydraulic drive through an external connecting device.
Owner:骆薛平
Differential pressure balancing method and device for multi-split air conditioner and multi-split air conditioner
ActiveCN112984620AEasy to start againIncrease productivityMechanical apparatusSpace heating and ventilation safety systemsDifferential pressureControl engineering
The embodiment of the invention provides a differential pressure balancing method and device for a multi-split air conditioner and the multi-split air conditioner, and belongs to the technical field of air conditioners. The differential pressure balancing method comprises the following two steps that a shutdown instruction is received; and the opening degree of an electronic expansion valve of the multi-split air conditioner is controlled according to the operation condition of the multi-split air conditioner before the shutdown instruction is received, so that the differential pressure balancing speed after the multi-split air conditioner is shut down is increased. The multi-split air conditioner comprises an outdoor unit and multiple indoor units, the outdoor unit and each indoor unit are each provided with a controller and an electronic expansion valve communicating with the controller, and a differential pressure balancing device for the multi-split air conditioner is arranged in the controller of the outdoor unit or any indoor unit, which is used for controlling the multi-split air conditioner to execute the differential pressure balancing method for the multi-split air conditioner. According to the multi-split air conditioner and the differential pressure balancing method and device thereof, the pipeline structure of the multi-split air conditioner can be simplified, the production efficiency is improved, and the production cost is reduced.
Owner:NINGBO AUX ELECTRIC +1
Respiratory heat dissipation structure for hub motor
ActiveCN107379884AProtect partsHas non-stick propertiesHubsElectric machinesElectric machineryEngineering
The invention provides a respiratory heat dissipation structure for a hub motor. The respiratory heat dissipation structure for the hub motor comprises a hub and a waterproof breathable film component; a breathing hole and projection parts are arranged on the hub; the waterproof breathable film component is arranged within or outside the hub or within the breathing hole; the waterproof breathable film component covers a radial cross section of the breathing hole; the projection parts are arranged on the external side surface of the hub; the projection parts comprise flow guide projections; and the flow guide projections correspond to the breathing hole. According to the respiratory heat dissipation structure for the hub motor, as the flow guide projections are arranged on the external surface of the hub, a pressure difference is formed between two sides of the breathing hole so as to drive hot air within the hub to flow out; therefore, the performance of the hub motor can be furthest developed; in addition, parts within the breathing hole can also be protected to achieve double benefits.
Owner:NEW ANANDA DRIVE TECHN SHANGHAI
Spindle sealing system for motor working under high-temperature or high-pressure environment
ActiveCN105515256AExtended maintenance cycleStable jobEngine sealsSupports/enclosures/casingsEngineeringHigh pressure
The invention discloses a spindle sealing system for a motor working under a high-temperature or high-pressure environment, which belongs to the technical field of motor equipment. The spindle sealing system comprises a first connector and a second connector; the first connector is connected with a motor housing; the second connector is connected with a spindle, and the first connector and the second connector are connected through screw threads. The spindle sealing system is characterized in that a piston rod sleeves the spindle; the piston rod is connected with a piston; one end of the first connector is connected with a piston end cover; the other end of the first connector is connected with a first sealing element; the second connector is connected with the spindle through a second sealing element; a transitional cavity is defined by the first connector, the second connector and the spindle; an internal cavity is defined by the motor housing, the spindle and the piston end cover; the first connector is provided with a first pressure balance hole, and the piston end cover is provided with a second pressure balance hole. Because the pressure difference between sealing is balanced by the piston, the sealing can work under a zero-pressure-difference environment, consequently, the sealing reliability is improved, and the stable operation of the motor under the high-temperature or high-pressure environment can be ensured.
Owner:DONGFANG ELECTRIC MACHINERY
Multi-split air conditioning system
ActiveCN114017898ABalanced differential pressureWhen the differential pressure value is small, the balance will be achieved when the safe frequency value of the compressor is reachedMechanical apparatusSpace heating and ventilation safety systemsEngineeringAir conditioning
The invention relates to a multi-split air conditioning system. The multi-split air conditioning system comprises a calculation module which calculates a difference delta P between exhaust pressure Pd and suction pressure Ps of a compressor before shutdown when an outdoor unit receives a shutdown instruction of the last indoor unit in operation; and a control module which is configured to execute the following voltage-sharing control that whether delta P is larger than delta P3 is judged; when delta P is smaller than or equal to delta P3, if current frequency H of the compressor is larger than a safe frequency value H0 when the compressor is safely shut down, the compressor is shut down after frequency of the compressor is reduced to be smaller than or equal to H0, and if H is smaller than or equal to H0, the compressor is shut down; and when delta P is larger than delta P3 and a current operation mode is a refrigeration mode, first pressure difference control is carried out, and when the current operation mode is a heating mode, second pressure difference control is carried out. According to the invention, on the basis of not increasing hardware parts, pressure difference is effectively balanced, and liquid return risks and noise risks are effectively reduced.
Owner:QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
Novel aluminium alloy plastics suction mould
InactiveCN104943147AUnique structural designBalanced differential pressureDifferential pressureMain channel
The invention discloses a novel aluminium alloy plastics suction mould which comprises an upper mould part and a lower mould part; after the upper mould part and the lower mould part are assembled, a plastics suction mould cavity is formed; the upper mould part is internally provided with an air exhaust channel; the air exhaust channel consists of a main channel and auxiliary channels; the main channel is formed above the auxiliary channels and stretches out of the upper portion of the upper mould part; and the auxiliary channels are formed below the main channel and dispersed in an umbrella-shaped manner, and stretch out of an inner cavity of the upper mould part. The novel aluminium alloy plastics suction mould is unique in structural design; the air exhaust channel formed in the upper mould part of the blister mould is distributed in an umbrella-shaped manner from the top down, so that differential pressure of various air exhaust points can be balanced effectively with the structural design; a plastics suction molding process can be more stable; and the surface quality and the molding precision of a plastics suction product are improved.
Owner:SUZHOU HUACHONG PRECISION MACHINERY
Infusion apparatus puncture joint
PendingCN111388798APlay the effect of filtering airPrevent outflowInfusion devicesMedicineInfusion set
The invention discloses an infusion apparatus puncture joint. The infusion apparatus puncture joint comprises a base and a puncture head, and is characterized in that an air inlet channel and a liquidoutlet channel are formed in the puncture joint, wherein a one-way air inlet assembly is arranged on the air inlet channel, an air inlet of the air inlet channel is located in the base, and an air outlet of the air inlet channel is located in the puncture head; the liquid outlet channel comprises a liquid inlet section, a liquid storage cavity and a liquid outlet section; a liquid inlet of the liquid inlet section is located in the puncture head, and a liquid outlet of the liquid inlet section communicates with the liquid storage cavity; and a liquid inlet of the liquid outlet section communicates with the liquid storage cavity, and a liquid outlet of the liquid outlet section is located in the base. The infusion apparatus puncture joint has an air filtering function so as to remove air in liquid medicine entering a catheter, and meanwhile can be conveniently recycled, and the stability of inserting connection with a bottle cap of a medicine bottle is improved.
Owner:ZHEJIANG HUAFU MEDICAL EQUIP
Seafloor pulse vortex detection probe
InactiveCN105891324AGuaranteed accuracyHigh compressive strengthMaterial magnetic variablesOcean bottomPhysics
The invention relates to a seafloor pulse vortex detection probe. The seafloor pulse vortex detection probe comprises a sealing base, a sealing cover, a main radiating pipe, a plurality of auxiliary radiating pipes, a detection coil, an exciting coil and a watertight insertion-and-extraction connector. The sealing cover is fixedly arranged at the top of the sealing base, a sealing cabin is formed between the sealing base and the sealing cover, the main radiating pipe is arranged in the center inside the sealing cabin in a penetrating through mode, the auxiliary radiating pipes are circumferentially arranged inside the sealing cabin in a penetrating through mode at intervals, the detection coil is fixedly arranged on the outer side of the circumference surrounded by all the auxiliary radiating pipes, the exciting coil is fixedly arranged on the inner side of the circumference surrounded by all the auxiliary radiating pipes, the detection coil and the exciting coil are both fixedly connected with the bottom of the sealing base, one end of the watertight insertion-and-extraction connector is inserted inside the sealing cabin through the sealing cover, and is respectively connected with the detection coil and the exciting coil, and the other end of the watertight insertion-and-extraction connector is detachably connected with an external device. The seafloor pulse vortex detection probe is suitable for the seafloor sealed environment, and the good radiating effect can be guaranteed.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Water purification pretreatment pipeline structure
PendingCN106927523AAvoid pressure lossRealize remote controlWater treatment parameter controlTreatment involving filtrationFiltrationEngineering
Belonging to the technical field of water purification equipment, the invention provides a water purification pretreatment pipeline structure. The water purification pretreatment pipeline structure comprises a pretreatment filter core disposed between a water pump 2 water inlet end and raw water, and a pretreatment loop arranged on the water pump water inlet end and a water outlet end, the pretreatment loop includes a pretreatment water tank disposed on the water inlet end and water outlet end of the water pump, and a first valve and a second valve that are arranged on two ends of the pretreatment water tank, also a water level induction signal source is disposed in the pretreatment water tank. The water purification pretreatment pipeline structure provided by the invention is equipped with the pretreatment filter core for preliminary filtration of raw water and prevention of impurities from entering the water pump and affecting normal operation of the water pump; the pretreatment loop disposed at two ends of the water pump ensure smooth water purification after slight blocking of the pretreatment filter core, and the adaptability is higher; also the service life of the pretreatment filter core can be judged according to an induction time difference of the water level induction signal source, the judgment method is more convenient and accurate, and the water purification is guaranteed.
Owner:QINYUAN GRP CO LTD
PEM hydrogen production cathode water recovery system and method capable of keeping stable pressure difference between cathode and anode
PendingCN119530834Astable pressureBalanced differential pressureCellsWater storageWater storage tank
The PEM hydrogen production cathode water recovery system comprises a gas-liquid separation tank and a water storage tank, one side of the gas-liquid separation tank is provided with an input pipeline connected with an electrolytic bath cathode outlet, and the other side of the gas-liquid separation tank is provided with a hydrogen discharging pipeline. A separation tank middle liquid level sensor and a separation tank lower liquid level sensor are arranged on the gas-liquid separation tank, the lower end of the gas-liquid separation tank is connected with an inlet in the upper end of the water storage tank through a connecting pipeline, a separation tank water outlet control valve is arranged on the connecting pipeline, and a water storage tank inlet control valve is arranged at an inlet in the upper end of the water storage tank. A water storage tank upper liquid level sensor and a water storage tank lower liquid level sensor are arranged on the water storage tank, a water return pipeline is arranged at the lower end of the water storage tank and connected with the electrolytic bath water replenishing tank, and a water return control valve is arranged on the water return pipeline. In the cathode water discharging process, the cathode outlet pressure can be kept stable, meanwhile, the pressure difference between the cathode outlet pressure and the anode is always kept within the range meeting the requirement, and therefore the pressure difference balance between the cathode and the anode can be guaranteed.
Owner:DALIAN HYDROGEN YIXIN ENERGY CO LTD
Shell of refrigeration equipment and refrigeration equipment
InactiveCN109405401AReduce frostingImprove anti-frost effectLighting and heating apparatusDefrostingFrostAgricultural engineering
The invention discloses a shell of refrigeration equipment and the refrigeration equipment. The shell stands for a door or a box of the refrigeration equipment. The shell comprises an outer shell andan inner container connected with the outer shell. A foaming cavity is formed between the shell and the inner container. The shell further comprises a ventilation frost reduction device. The ventilation frost reduction device comprises a ventilation hood, a breather pipe and a waterproof ventilation part which are accommodated in the foaming cavity. The ventilation hood is mounted on the inner container and communicates with the inner container. The ventilation hook communicates with the outside through the breather pipe. The waterproof ventilation part is arranged on the breather pipe. The waterproof ventilation part can make external air get into the breather pipe to prevent water molecules of external air from getting into the breather pipe. After the door of the refrigeration equipmentis closed, the internal and external pressure difference of the refrigeration equipment can be quickly balanced, and the door of the refrigeration equipment can be opened easily. Moreover, the waterproof ventilation part can prevent the water molecules of external air from getting into the refrigeration equipment along with the external air, and the frost reduction effect of the refrigeration equipment is improved.
Owner:HEFEI HUALING CO LTD +2
Fuel cell humidifier with novel structure
The invention relates to the technical field of fuel cells, and discloses a fuel cell humidifier with a novel structure, the fuel cell humidifier comprises a main body shell and a bundling shell, the bundling shell is assembled on an internal end plate of the main body shell, and the bundling shell is provided with an internal slide block structure; the internal sliding block structure is in sliding fit with an end plate in the main body shell so as to adjust the size of the bundling shell, a hollow fiber membrane tube is arranged in the bundling shell, the hollow fiber membrane tube is fixed with the main body shell through a pouring sealant surface, two ends of the main body shell are detachably connected with end covers, and the end covers are used for being connected with a dry gas path. A pressure regulating valve is installed on the main body shell and used for balancing the pressure difference of a dry path and a wet path, and a connector sliding block is arranged at a connector of the main body shell and is in sliding connection with the connector of the main body shell so as to adjust the direction of the connector of the wet path. The humidifier is used for solving the problems that an existing humidifier is insufficient in anti-compression and anti-impact strength, poor in plasticity and limited in adaptability, and the use stability is affected by differential pressure fluctuation of a dry path and a wet path.
Owner:XUANKE HYDROGEN TECH (BEIJING) CO LTD
Hydraulic-hydraumatic comprehensive driving axle gear box body
ActiveCN104251297BEasy to assembleEasy to manufactureGearboxesGear lubrication/coolingEngineeringFlange
The invention discloses a hydraulic-hydraumatic comprehensive driving axle gear box body for a high-speed railway maintaining vehicle. The hydraulic-hydraumatic comprehensive driving axle gear box body comprises a box cover, an upper box body and a lower box body, wherein a motor mounting flange base, a motor input spline shaft bearing base, an input gear shaft bearing base, a middle shaft bearing base and an output shaft bearing base are arranged on the box body; the box body is provided with an upper subdivision part and a lower subdivision part; the motor mounting flange base, the motor input spline shaft bearing base and the input gear shaft bearing base have the same first central axis; the first central axis is located on the upper subdivision part; a second central axis of the middle shaft bearing base and a third central axis of the output shaft bearing base are respectively located on the lower subdivision part and are vertical to each other; the first central axis and the second central axis of the middle shaft bearing base are parallel to each other; the first central axis is deviated from the second central axis for a distance S; the deviating direction is away from one side of a pull arm mounting base. The hydraulic-hydraumatic comprehensive driving axle gear box body has the advantages of compact structure, small volume, reasonable layout and easiness in manufacturing and maintaining.
Owner:CHANGZHOU RUITAI ENG MASCH CO LTD +1
Respirator of bowl washing machine and water groove type bowl washing machine
PendingCN107752940ABalanced differential pressurePrevent backflowTableware washing/rinsing machine detailsCleaning equipmentWater dischargeRespirator
The invention discloses a respirator of a bowl washing machine and a water groove type bowl washing machine. The respirator comprises a respirator casing and a one-way valve, wherein a water dischargepassage and an air connection passage are defined in the respirator casing; the water discharge passage is provided with a sewage inlet and a sewage outlet; the air connection passage is provided with a water discharge ventilation opening and a respiration opening; the water discharge ventilation opening communicates with the water discharge passage and is positioned between the sewage inlet andthe sewage outlet; the respiration opening communicates with the external atmosphere. The one-way valve comprises a door table and a check sheet; the door table is arranged on the inner wall of the air connection passage and is positioned between the water discharge ventilation opening and the respiration opening; the check sheet is rotatablely arranged in the air connection passage, and is positioned at one side, facing the water discharge ventilation opening, of the door table. The respirator of the bowl washing machine provided by the embodiment of the invention has the advantages that a mode of opening or closing the respiration opening by the movement of the check sheet is used; stability and reliability are high; the service life is longer.
Owner:FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG CO LTD +1
Explosion-proof valve, battery pack and vehicle
ActiveCN112133865BBalanced differential pressureAvoid breakingVent arrangementsBatteriesElectrical batteryMechanical engineering
The disclosure relates to an explosion-proof valve, a battery pack and a vehicle. The explosion-proof valve includes an explosion-proof valve body and a pressure relief structure. A first exhaust channel is formed on the explosion-proof valve body. The connected second exhaust passage, the pressure relief structure is movably connected to the explosion-proof valve body so that the first exhaust passage can selectively communicate with the inside of the battery pack casing; the air pressure inside the battery pack casing is less than the pressure threshold In the first working condition, the pressure relief structure blocks the first exhaust channel, and the inside of the battery pack casing communicates with the outside atmosphere through the second exhaust channel. Under normal circumstances, the pressure relief structure moves away from the first exhaust passage under the action of the air pressure inside the battery pack casing, so that the inside of the battery pack casing communicates with the outside atmosphere through the first exhaust passage and the second exhaust passage. , the explosion-proof valve has strong reliability and high safety factor.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD
Air conditioner
InactiveCN111912134AEasy to start again immediatelyPhenomena that reduce service lifeCompression machines with reversible cycleAir conditioningPhysics
The invention discloses an air conditioner. The air conditioner comprises a compressor, an air conditioning system and an electromagnetic three-way valve. Three ways of the electromagnetic three-way valve are an inlet, a first outlet and a second outlet. The inlet communicates with an exhaust port of the compressor; the first outlet communicates with the input end of the air conditioning system, and the output end of the air conditioning system communicates with an air suction port of the compressor; and the second outlet communicates with the air suction port of the compressor. When the compressor is stopped, the pressure difference between the exhaust port and the air suction port of the compressor is balanced, the compressor can be immediately started again after being stopped, and thewaiting time is greatly shortened.
Owner:ZHUHAI HUAYU METAL
Control method and device for rapidly balancing pressure difference of air conditioning system and air conditioner
InactiveCN113587339AHigh and low pressure difference quick balanceAvoid startup failuresMechanical apparatusSpace heating and ventilation safety systemsFour-way valveCoupling
The invention provides a control method and device for rapidly balancing the pressure difference of an air conditioning system and an air conditioner. The method comprises the steps that: after a compressor is shut down, the pressure difference between high pressure and low pressure is obtained; at least one of the following items is controlled according to the pressure difference: the rotating speed of delayed closing of an inner fan, the rotating speed of delayed closing of an outer fan, the opening degree of delayed closing of an expansion valve of an inner unit and the reversing duration of a four-way valve; and the rotating speed of delayed closing of the inner fan, the rotating speed of delayed closing of the outer fan, the opening degree of delayed closing of the expansion valve of the inner unit and the reversing duration of the four-way valve are in positive correlation with the pressure difference. According to the invention, the rotation speed of delayed closing of the inner fan, the rotation speed of delayed closing of the outer fan, the opening degree of delayed closing of the expansion valve of the inner unit and the reversing duration of the four-way valve are controlled through coupling of the high-low pressure difference; the high-low pressure difference after the compressor is shut down can be rapidly balanced; and starting failure of the compressor is avoided.
Owner:NINGBO AUX ELECTRIC +1
Oil gas water well universal type positive cycle type high-efficiency inner bailing combination tool
The invention provides an oil gas water well universal type positive cycle type high-efficiency inner bailing combination tool. The oil gas water well universal type positive cycle type high-efficiency inner bailing combination tool comprises a first valve body, an upper through hole is formed at the top end of the first valve body and a lower through hole is formed at the bottom end of the first valve body, and the side walls opposite to each other in the first valve body are provided with a sand-carrying fluid outlet hole which is communicated with the lower through hole and the outside, and a power fluid outlet hole which is communicated with the upper through hole and the outside; at least one rubber cup with an opening facing downward is fixed on the first valve body, and the rubber cups are arranged between the upper portion of the power fluid outlet hole and the lower portion of the sand-carrying fluid outlet hole; The oil gas water well universal type positive cycle type high-efficiency inner bailing combination tool further comprises a second valve body, an upper through hole is formed at the top end of the second valve body and a lower through hole is formed at the bottom end of the second valve body, and the side walls opposite to each other in the second valve body are provided with a sand-carrying fluid inlet hole which is communicated with the lower through hole and the outside, and a power fluid inlet hole which is communicated with the upper through hole and the outside; at least one rubber cup with an opening facing upward is fixed on the second valve body, and the rubber cups are arranged between the upper portion of the power fluid outlet hole and the lower portion of the sand-carrying fluid outlet hole.
Owner:李国晗
A spindle sealing system for working motors under high temperature or high pressure environment
ActiveCN105515256BExtended maintenance cycleStable jobEngine sealsSupports/enclosures/casingsEngineeringPressure difference
The invention discloses a spindle sealing system for a motor working under a high-temperature or high-pressure environment, which belongs to the technical field of motor equipment. The spindle sealing system comprises a first connector and a second connector; the first connector is connected with a motor housing; the second connector is connected with a spindle, and the first connector and the second connector are connected through screw threads. The spindle sealing system is characterized in that a piston rod sleeves the spindle; the piston rod is connected with a piston; one end of the first connector is connected with a piston end cover; the other end of the first connector is connected with a first sealing element; the second connector is connected with the spindle through a second sealing element; a transitional cavity is defined by the first connector, the second connector and the spindle; an internal cavity is defined by the motor housing, the spindle and the piston end cover; the first connector is provided with a first pressure balance hole, and the piston end cover is provided with a second pressure balance hole. Because the pressure difference between sealing is balanced by the piston, the sealing can work under a zero-pressure-difference environment, consequently, the sealing reliability is improved, and the stable operation of the motor under the high-temperature or high-pressure environment can be ensured.
Owner:DONGFANG ELECTRIC MACHINERY
Feeding system of straw biogas fermentation tank
InactiveCN111676124AEffective protectionGuaranteed continuous stabilityBioreactor/fermenter combinationsBiological substance pretreatmentsStrawPulp and paper industry
The invention relates to a feeding system of a straw biogas fermentation tank, and belongs to the technical field of straw biogas fermentation. The feeding system comprises a fermentation tank, a feeding pipe, a feeding pump, a U-shaped pipe and a feeding pool, wherein the top of the fermentation tank is connected with the feeding pipe; the feeding pipe is fixed along the side face of the fermentation tank and extends downwards to the ground; one end of the feeding pipe extends into the bottom of the feeding pool and is connected with a feeding pump fixed in the feeding pool through the U-shaped pipe; and the height of the top end of the U-shaped pipe is not lower than the position of the feeding pipe of a horizontal section on the ground. The U-shaped pipe is arranged between the feedingpipe and the feeding pump in the feeding pool, so that the water sealing effect can be achieved, and the situation that after the feeding pump stops working, a fluid in the feeding pipe of a verticalsection flows back to generate impact due to pressure difference, and consequently the pump is damaged is avoided.
Owner:池州市忠友秸秆综合利用有限公司
Rotor compressor and thermal management system
PendingCN119664673Areduce pressureReduce differential pressureRotary/oscillating piston combinations for elastic fluidsRotary/oscillating piston pump componentsHeat managementElectric machinery
The invention relates to the technical field of thermal management, and provides a rotor compressor and a thermal management system.The rotor compressor is provided with at least one bypass pipe for communicating a compression cavity of a rotor pump with an air suction cavity of the rotor pump or a device communicated with the air suction cavity; a first valve is arranged on the bypass pipe, the bypass pipe is blocked by the first valve when the rotor pump works, and the bypass pipe is conducted by the first valve when the rotor pump stops. The pressure difference between the air suction cavity and the compression cavity in the rotor pump is balanced after the compressor is shut down, the gas resistance moment is effectively reduced, and the problem that the starting speed is low due to the fact that the gas resistance moment is larger than the motor moment at the starting moment of the compressor is solved.
Owner:SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
A Welded Air Traffic Control Secondary Radar Antenna Box
ActiveCN109216864BReduce weightReduced strength requirementsAntenna supports/mountingsRadar antennasStructural engineering
Owner:ANHUI SUN CREATE ELECTRONICS
Respiration device of dish washer and water-tank dish washer
ActiveCN107713939ABalanced differential pressurePrevent backflowTableware washing/rinsing machine detailsHome appliance efficiency improvementEngineeringSewage
The invention discloses a respiration device of a dish washer and a water-tank dish washer. The respiration device of the dish washer includes a respiration device shell and a one-way valve. A drainage channel and a ventilation channel are defined in the respiration device shell, the drainage channel is provided with a sewage inlet and a sewage outlet, the ventilation channel is provided with a drainage venation opening and a respiration opening, the drainage venation opening is communicated with the drainage channel and is located between the sewage inlet and the sewage outlet, and the respiration opening is communicated with external atmosphere; the one-way valve includes a valve body and a valve element, wherein the valve body is arranged in the ventilation channel, an external connector and an internal connector are arranged on the opposite side walls of the valve body respectively, the external connector is communicated with the respiration opening, the internal connector is communicated with the drainage venation opening, the valve element is provided with a limit part and a plugging part, and the plugging part is suitable for plugging the external connector. According to therespiration device of the dish washer, the mode that motion of the valve element is adopted to open or close the respiration opening is very reliable and stable, and the service life is long.
Owner:FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG CO LTD +1
Pressure control device and method in climate laboratory aircraft engine start-up test room
ActiveCN114563187BImprove sealingBalanced differential pressureEngine testingFluid pressure control using electric meansThermal insulationTest room
The invention discloses a pressure control device and method in a climate laboratory aircraft engine start-up test room. The device comprises a laboratory thermal insulation wall plate, a positive pressure control mechanism and a negative pressure control mechanism. The positive pressure control mechanism and the negative pressure control mechanism both include The air flow channel and the thermal insulation sealing door assembly, the positive pressure control valve is installed in the air flow channel of the positive pressure control mechanism, and the negative pressure control valve is installed in the air flow channel of the negative pressure control mechanism; the method includes: when the aircraft engine start-up test is not carried out The operation process; the operation process before the start-up test of the aircraft engine; the working process of the positive pressure control valve and the negative pressure control valve during the engine start-up test. The invention solves the problem of excessive pressure difference inside and outside the laboratory caused by the mismatch between the compensation air flow and the exhaust emission of the engine during the driving test of the aircraft engine, and can ensure the safety of the driving test of the aircraft engine, with good sealing performance and fast response speed.
Owner:CHINA AIRPLANT STRENGTH RES INST
High-voltage LED wall washing lamp
PendingCN108224166AImprove light utilizationEasy wiringLighting support devicesElectric circuit arrangementsLamp shellHOOD assembly
The invention discloses a high-voltage LED wall washing lamp. The high-voltage LED wall washing lamp comprises a strip-shaped lamp shell, an LED light source assembly, a lamp hood, an LED high-voltagecontrol assembly and an anti-dazzle light hood assembly, wherein the strip-shaped lamp shell is divided into a light source cavity and a driving cavity through a partition plate which extends along the strip shape, the LED light source assembly is installed on the surface of the light source cavity, the LED control assembly is arranged inside the driving cavity, and the lamp hood is flush with the top of the light source cavity; and the two ends of the lamp shell are each provided with a side cover, and each side cover is provided with a waterproof ventilated screw plug and a waterproof connector. According to the high-voltage LED wall washing lamp, the waterproof ventilated screw plugs are arranged on the end covers for balancing a voltage difference between inside and outside, and the waterproof performance of the LED wall washing lamp is improved; and the LED high-voltage control assembly comprises a full-voltage power supply and an LED constant-current drive, and the lamp shell isprovided with an anti-dazzle light hood.
Owner:ROLED OPTO ELECTRONICS SHANGHAI