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54results about How to "Solve the airtight problem" patented technology
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Grafting and tree form reshaping method of three-branch inarching of closed apple orchard
InactiveCN101766102ASolve the airtight problemSolve ventilationHorticulture methodsFruit treeTree trunk
The invention relates to technology to transform a closed apple orchard through the combination of grafting and tree form reshaping and discloses a grafting and tree form reshaping method of three-branch inarching of the closed apple orchard. Three-branch grafting is carried out at the root of a fruit tree, three scions are grafted at the subcutaneous section and comprise one long scion and two short scions; after the grafted branch buds, the central tree trunk is formed through three-branch inarching, the height of the tree in the current year can reach up to about 2.5m, and the formed central tree trunk can be pruned according to different requirements of the tree form to be reshaped from the next year, thereby realizing improvement of fruit tree breed and fruit tree form in a short period of time.
Owner:NORTHWEST A & F UNIV
An explosion-proof fire-stop breathing valve
InactiveCN102269287ASolve the airtight problemAddress flexibilityEqualizing valvesSafety valvesFlame arresterCircular disc
The invention provides an explosion-proof and fire-resistant breathing valve, which is composed of a valve cover, a valve body and an air flow passage, the valve cover and the valve body are fixedly connected by bolts, the air flow passage is placed at the central axis inside the valve body, and a positive pressure valve is also included The positive pressure valve disc is vertically fixed on the upper end of the air flow passage through the valve disc motion control device, and the negative pressure valve disc is vertically fixed on the lower end of the air flow channel through the valve disc motion control device. The positive pressure valve disc and The negative pressure valve disc is a circular air bag; the positive pressure valve disc and the negative pressure valve disc are designed as a circular air bag structure, which increases the lubricity of the valve disc and effectively solves the airtightness of the existing breathing valve. The technical problem that can not be balanced with flexibility, and the structure is simple and easy to operate.
Owner:TIANJIN HENGREN GASOLINEEUM EQUIP
Deactivated catalyst regeneration method
ActiveCN109926103AGuarantee vulcanization qualityReduce dosageCatalyst regeneration/reactivationRefining to eliminate hetero atomsOrganic sulfide compoundBurn treatment
The invention provides a deactivated catalyst regeneration method, which comprises: (1) making a to-be-regenerated hydrogenation catalyst contact an oxygen-containing gas, and carrying out charcoal burning treatment to obtain a catalyst A; (2) making the catalyst A contact an organic compound solution, and carrying out heat treatment to obtain a catalyst B; and (3) introducing an organic sulfide and hydrazine hydrate into the catalyst B, and carrying out heat treatment to obtain a regenerated catalyst. The regeneration method of the present invention can increase the activity of the regenerated catalyst.
Owner:CHINA PETROLEUM & CHEM CORP +1
Integral lifting and sliding type protective airtight door
ActiveCN1865645ASolve the airtight problemSolve the problem of uneven compressionSealing arrangementsWing arrangementsEngineering
Owner:ENG DESIGN RES INST OF SECOND ARTILLERY PLA
Hydrogenation catalyst regenerating method
ActiveCN109926105AGuarantee vulcanization qualityReduce vulcanization costCatalyst regeneration/reactivationProduct gasOrganic compound
The invention provides a hydrogenation catalyst regenerating method, which comprises: (1) making a to-be-regenerated hydrogenation catalyst contact an oxygen-containing gas, and carrying out charcoalburning treatment to obtain a catalyst A; (2) making the catalyst A contact an organic compound solution, and carrying out heat treatment to obtain a catalyst B; and (3) introducing hydrazine hydrateinto the catalyst B, and carrying out heat treatment to obtain a regenerated catalyst. The regeneration method of the present invention can increase the activity of the regenerated catalyst.
Owner:CHINA PETROLEUM & CHEM CORP +1
Vulcanization type hydrogenation catalyst starting method
ActiveCN109926100ASuppress overflowGuarantee vulcanization qualityCatalyst activation/preparationRefining to eliminate hetero atomsVulcanizationHydrogenation reaction
The invention discloses a vulcanization type hydrogenation catalyst starting method, which comprises: loading a vulcanization type hydrogenation catalyst composition into a reactor; carrying out nitrogen gas tightness; gradually introducing hydrogen gas after the nitrogen gas tightness is qualified; carrying out hydrogen gas low-pressure gas tightness; increasing the temperature and the pressure after the low-pressure gas tightness is qualified; carrying out high-pressure gas tightness; and after the high-pressure gas tightness is qualified, adjusting the pressure to a reaction pressure untilvulcanization is completed, adjusting the temperature to a reaction temperature, feeding raw material oil, and starting a hydrogenation reaction. With the starting method of the present invention, thevulcanization quality of the catalyst can be ensured, the gas tightness problem of the device can be solved, and the advantages of no environment pollution, economy and environmental protection can be achieved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Upper rigidity contact net electric subway integral elevating translational type interval partition door
ActiveCN101275454ASolve the airtight problemSolve the problem of uneven compressionRailway componentsWing arrangementsDevice formEngineering
The invention relate to an upper rigid centenary system electrical subway integral lifting translation type interval partition door, comprising a interval partition door leaf over a track, a door frame, a hinge connecting the door leaf with the door frame and a locking device, the joint between the inside surface upper edge of the interval partition door leaf and the inside surface of the door frame is equipped with an upper part movable cover plate device. The lower surface of the upper part movable cover plate device and the upper surface of an upper lifting sealing device form a sealing abutted surface. The upper part of the upper lifting sealing device, relative to a rigid catenary system and the lower surface of a wire, is fixed with a profile modeling sealing rubber block. By using an integral lifting translation type hinge and setting the upper lifting sealing device, closing in place is realized without the wire being disconnected, the transformation from peacetime to wartime is fast. In addition, the upper part movable cover plate device and the upper lifting sealing device employ profile modeling sealing structure, which effectively solves the closing difficulty of the upper rigid catenary system, the structure is simple, and the closing property is reliable.
Owner:ENG DESIGN RES INST OF SECOND ARTILLERY PLA
Vulcanization type catalyst starting method
ActiveCN109926101AGuarantee vulcanization qualitySolve the airtight problemCatalyst activation/preparationHydrocarbon oil crackingVulcanizationHydrogenation reaction
The invention discloses a vulcanization type catalyst starting method, which comprises: loading a vulcanization type hydrogenation catalyst composition into a reactor; carrying out nitrogen gas tightness; gradually introducing hydrogen gas after the nitrogen gas tightness is qualified; carrying out hydrogen gas low-pressure gas tightness; increasing the temperature and the pressure after the low-pressure gas tightness is qualified; carrying out high-pressure gas tightness; and after the high-pressure gas tightness is qualified, adjusting the pressure to a reaction pressure until vulcanizationis completed, adjusting the temperature to a reaction temperature, feeding raw material oil, and starting a hydrogenation reaction. With the starting method of the present invention, the vulcanizationquality of the catalyst can be ensured, the gas tightness problem of the device can be solved, and the advantages of no environment pollution, economy and environmental protection can be achieved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Testing apparatus for research on reducibility of single-particle iron ore
InactiveCN103234853AEasy to operateGuaranteed reduction temperatureWeighing by removing componentHanging basketThermocouple
The invention discloses a testing apparatus for research on reducibility of a single-particle iron ore, which belongs to the field of ironmaking in the metallurgical industry. The testing apparatus comprises a reducing furnace, a quartz reduction tube, a weighing device, a protective device, a supporting device, a heating control device and a gas control device, wherein a furnace chamber and a heating device are arranged in the reducing furnace, the quartz reduction tube is fixed in the furnace chamber of the reducing furnace through the supporting device, the iron ore is disposed in a hanging basket and then hung below the weighing device through a suspension wire, the quartz reduction tube is provided with a reducing gas inlet and two reducing gas outlets, a thermocouple and a porous plate are arranged in the quartz reduction tube, the supporting device is provided with a water sealing groove, a protective cover is connected with the water sealing groove so as to realize sealing of the whole apparatus, flow of reducing gas is controlled by a mass flow controller, and a computer is connected with the weighing device to record data. The testing apparatus provided by the invention has the advantage that research on reducibility of the single-particle iron ore is realized through improvement of a weighing mode of a conventional determination apparatus for reducibility of iron ore.
Owner:LAIWU IRON & STEEL GRP +1
Air-spring-based semi-active control hydraulic suspension
ActiveCN109307041AFeedback pressure statusImprove airtightnessSpringsShock absorbersSemi activeVibration absorption
The invention relates to an air-spring-based semi-active control hydraulic suspension. Through the air-spring-based semi-active control hydraulic suspension, the problem that the bandwidth of absorbable vibration frequency bands is small when an engine suspension absorbs external vibration is solved. The air-spring-based semi-active control hydraulic suspension achieves the effects of being capable of conducting full-band absorption on the absorbable vibration frequency bands from low frequency to high frequency, reducing vibration noise in a cab and improving the riding comfort. The air-spring-based semi-active control hydraulic suspension is composed of an upper suspension assembly, a lower suspension assembly and a cylindrical gas chamber. A suspension internal cavity is divided into anupper liquid chamber, a middle liquid chamber and a lower liquid chamber by an inertia channel and decoupling membranes. A T-shaped groove inertia channel can increase throttling loss and return lossof liquid flowing through the internal cavity and increase damping force. The cylindrical gas chamber formed by the two decoupling membranes communicates with an external piston. The direction and magnitude of current in an electromagnetic coil in the piston can be adjusted to realize up-down movement of the head of the piston, so that the pressure intensity of gas in the cylindrical gas chamberis adjusted, the rigidity of the decoupling membranes is dynamically adjusted, and the autokinetic degree of the suspension is dynamically changed finally. Accordingly, the purpose of full-band vibration absorption is achieved.
Owner:JILIN UNIV
Inductively coupled plasma ion source gas protection device
InactiveCN102263004BBurn out preventionSolve the airtight problemIon sources/gunsLinear correlationTorch
The invention relates to an inductively coupled plasma ion source gas protection method and an inductively coupled plasma ion source gas protection device. The inductively coupled plasma ion source gas protection device provided by the invention comprises a hollow gas shielding case body, wherein one end of the gas shielding case body is provided with a torch tube hole corresponding to a plasma torch tube and a gas inlet, and the other end of the gas shielding case body is provided with an opening communicated with the outside; the opening is against an inductively coupled plasma interface device; a water cooling device is arranged at the opening, and is in fit with the inductively coupled plasma interface device to form the gas outlet end of the gas shielding case body; and the gas outlet end of the gas shielding case body is communicated with the outside. By the inductively coupled plasma ion source gas protection method and the inductively coupled plasma ion source gas protection device provided by the invention, inductively coupled plasmas (ICP) are positioned in an inert gas atmosphere to radically eliminate or reduce interference formed by O, N, H, C and the like, reduce background equivalent concentration and improve a linear correlation coefficient and a detection limit.
Owner:NINGBO ACAD OF SCI & TECH FOR INSPECTION & QUARANTINE
Filling device for solving problems of incapability of quantitatively filling toys and poor tightness during filling of toys
The invention relates to the technical field of toys, and discloses a filling device for solving the problems that quantitative filling cannot be achieved and tightness is poor during toy filling. The filling device comprises a shell, the whole device is supported through the shell, through cooperative use of a down feather outlet, a clamping plate, a first connecting rod and a half gear, automatic clamping is achieved during down feather filling, manual holding is not needed for control, down feather leakage in the down feather filling process is avoided, down feather waste is reduced, meanwhile, the leaked down feather is prevented from influencing the processing environment of a production line, quantitative down feather filling is achieved during down feather filling through cooperative use of a negative pressure pipe, a push rod, a first rotary disc and a second rotary disc, manual control is not needed, errors are reduced, negative effects on hand feeling, quality and the like of toys due to too small down feather filling amount are avoided, quantitative down feather filling and automatic clamping are linked through matched use of a disc and a limiting sleeve, linkage of the whole device is improved, and the operation is simpler.
Owner:王天红
Pneumatic supercharging excitation device and method oriented to magnetic resonance elasticity imaging
ActiveCN104771170ASpread fastReduce lossesDiagnostic recording/measuringSensorsImaging qualityResonance
The invention discloses a pneumatic supercharging excitation device and method oriented to magnetic resonance elasticity imaging. The pneumatic supercharging excitation device comprises a vibration generator and a bridging mechanism, wherein the vibration generator comprises a T-type push rod, the edge of a round face of the T-type push rod is connected with a vibrating end airtight air bin through a vibrating end supporting film in a sealed mode, a vibrating end sealing film is arranged in the vibrating end airtight air bin, and opposite balance springs are arranged below the round face of the T-type push rod; the bridging mechanism comprises a miniature air cylinder, an air pressure gauge and a bridging head, a bridging end sealing film is arranged in the bridging head, the lower edge of the bridging head is connected with the edge of an upper round face of an I-type push rod through a bridging end supporting film, and tension springs are arranged at the two sides of the I-type push rod. As the pressure intensity of air in a guide pipe is increased, propagation speed of mechanical waves in the guide pipe is higher, and energy loss of the mechanical waves is smaller. Excitation on tissue in the human body is enhanced, and therefore elasticity imaging quality is higher.
Owner:HEFEI UNIV OF TECH
Cast-in-situ thermal-insulation integrated slope roof structure and construction method
PendingCN107447903AImprove carrying capacityExtended service lifeBuilding roofsRoof covering using tiles/slatesRoof tileInsulation layer
Owner:廊坊卓锐建材有限公司
Floor heat preservation construction process achieved through ultrafine inorganic fiber spraying
InactiveCN104712066AWide applicabilitySolve many seamsHeat proofingSound proofingMaterials preparationFiber
The invention provides a floor heat preservation construction process achieved through ultrafine inorganic fiber spraying. The floor heat preservation construction process includes the first construction step of construction preparation, the second construction step of finished product protection, the third construction step of base layer processing, the fourth construction step of material preparation, the firth construction step of spraying construction, the sixth construction step of surface finishing, the seventh construction step of detail processing, the eighth construction step of site clearing and the ninth construction step of quality acceptance. According to the principle that ultrafine inorganic fiber granulated wool and water-based environment-friendly adhesives are combined, the inorganic fiber granulated wool and the water-based environment-friendly adhesives are sprayed to the concrete surface within the design range through a special fiber spraying machine at the same time, and a thermal insulation and heat preservation layer which is free of joint seams, closed, overall stable, elastic, and capable of reducing noise, absorbing sounds and preventing fire is formed after natural drying; compared with a traditional heat preservation technology, the defects that in traditional thermal insulation and heat preservation construction, the number of seam joints is large, the sealing performance is poor, installation procedures are complex, aging and deforming are prone to happening, the number of potential quality hazards in the later period is large, and investment is heavy are fundamentally overcome.
Owner:NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
Catalyst negative pressure suction and positive pressure conveying and screening method and system
PendingCN111318449ASolve the airtight problemSolve processingSievingCombination devicesPtru catalystExhaust fumes
The invention belongs to the technical field of catalyst screening, and discloses a catalyst negative pressure suction and positive pressure conveying and screening method and system. To-be-screened catalysts of a converter are conveyed into a gas-solid separation bin by negative pressure through a material suction hole, and a material level control system of the gas-solid separation bin discharges the catalysts to a catalyst vibration screen through a discharger according to the height of the material level; after the catalysts are separated by multiple stages of screens, the small particle catalysts which are powdery and do not meet the requirements enter a collection hopper of the vibration screen and are airtightly collected by a screw machine; the particle catalysts and ceramic ballsenter respective collection hoppers and are bagged, returned and utilized; and as a certain negative pressure is formed in a screening machine, catalyst dust generated in the screening process is sucked into a bag type dust collector along with air, filtered waste gas is emptied by a Roots blower, and the residual catalyst dust is conveyed to a related unit for treatment. The system has the characteristics of no dust leakage and small catalyst takeout, screening and refilling loss, and the work environment in the catalyst screening process is improved.
Owner:铜陵市德兴综合服务有限责任公司
Multi-station vacuum annealing machine
A multi-station vacuum annealing machine comprises a machine frame, a workbench, a plurality of vacuumizing chambers, vacuumizing mechanism, a heating mechanism and a driving mechanism, wherein the workbench is arranged on the machine frame, the multiple vacuumizing chambers are arranged on the workbench, the vacuumizing mechanisms are communicated with the vacuumizing chambers correspondingly, the heating mechanism is used for heating one or more vacuumizing chambers, and the driving mechanism is used for driving the vacuumizing chambers and the heating mechanism to move relatively. Each vacuumizing chamber comprises a base arranged on the workbench and an upper cover cap capable of being matched with the base in a sealed manner, and each base is communicated with the corresponding vacuumizing mechanism. The heating mechanism comprises a lifting module and an electromagnetic heating coil arranged at the lower end of the lifting module, and the electromagnetic heating coils are locatedright above the one or more vacuumizing chambers. According to the multi-station vacuum annealing machine, a workpiece can be independently heated and annealed, so that the workpiece to be annealed is uniformly heated, and the annealing quality is improved; and circulation and uninterrupted automatic operation of heating annealing, heat preservation, cooling and heating annealing can be conducted, the production is planned, manual intervention is not needed, the production efficiency is high, the energy consumption is low, and the environment friendliness is achieved.
Owner:THERMOS JIANGSU HOUSEWARES
Rotating disc type suction nozzle bottle packaging machine
InactiveCN106477084ASolve the problem of not being able to maintain your appearanceSolve the airtight problemLiquid materialEngineeringBottle
The invention discloses a rotating disc type suction nozzle bottle packaging machine. The packaging machine comprises a package material unrolling device, a package material caching device, a lamination device and a rotating disc conveying device which are sequentially connected. Clamping devices are uniformly distributed on the periphery of the rotating disc conveying device. A preheating device, a forming device, a heat sealing device, a forming and cooling device, a filling device, a nozzle feeding device, a nozzle sealing device, a nozzle portion cooling device and a finished product separation device are uniformly distributed on the outer edge of the rotating disc conveying device in sequence. A blowing device is arranged above the forming device. The rotating disc type suction nozzle bottle packaging machine solves the problem that a fluid packaging container cannot keep the shape by itself, the problem that the fluid packaging container cannot be opened or closed repeatedly, the problem that a fluid packaging container with a certain shape keeping ability requires multiple devices to carry out working procedures correspondingly and high cost investment is needed, and the problem that when a suction nozzle bottle is manufactured with a hard package material, only linear manufacturing is achieved, and the rotating disc form cannot be used for manufacturing.
Owner:朱海鹏
Household central fresh air system installation and maintenance process flow
InactiveCN111473453ASolve the airtight problemQuality improvementDucting arrangementsLighting and heating apparatusFresh airEnvironmental engineering
The invention provides a household central fresh air system installation and maintenance process flow, and belongs to the technical field of fresh air system installation and maintenance. A householdcentral fresh air installation and maintenance process is promoted and improved in terms of an existing installation mode standard. The effects that a fresh air installation pipeline is sealed, an airpipe is cleaned, disinfected and sterilized in the installation process, and functional parts such as an observation window, and a cleaning port are added are mainly realized. More importantly, the process flow of cleaning, disinfection and sterilization of a fresh air pipeline during daily use is added. Four patent products of air pipe cleaning and disinfection equipment, a household central fresh air system pipeline cleaning system, a special air cap for cleaning the fresh air pipeline and an ultra-thin hose clamp are used, the cleaning port and the observation window are designed, and a plurality of processes are combined to improve household central fresh air installation and cleaning, disinfection and sterilization procedures, so that air input into the room is not subjected to secondary pollution, and the health of residents is guaranteed.
Owner:张靖宇
Easy-to-assemble building pouring formwork
InactiveCN113482319AQuick assemblySolve the airtight problemAuxillary members of forms/shuttering/falseworksForming/stuttering elementsArchitectural engineeringStructural engineering
The invention discloses an easy-to-assemble building pouring formwork. The easy-to-assemble building pouring formwork comprises a formwork plate face and a fixing mechanism, plate-shaped parts of integrated structures are perpendicularly arranged at the upper side edge, the lower side edge, the left side edge and the right side edge of the formwork plate face correspondingly, and the plate-shaped parts of the upper side edge, the lower side edge, the left side edge and the right side edge of the formwork plate face are combined to form a frame part of the formwork plate face; and after formwork plate face single bodies are spliced, the single bodies of the formwork plate face frame part are attached to one another, the formwork plate face single bodies are fixedly connected together through a fixing mechanism after being spliced, and the fixing mechanism is arranged at the corner of the formwork plate face frame part after being installed. According to the easy-to-assemble building pouring formwork, rapid splicing of building formworks is achieved, and the leakproofness of the spliced formworks is achieved; and in addition, different from bolt fixing, clamping and fixing of the spliced formworks can be achieved after a pressing handle is pressed, rapid locking is achieved, the construction difficulty during installation is reduced, and meanwhile, operation steps during actual use are simplified.
Owner:杨培文
Airtight window
PendingCN111305487AGuarantee the ability of light transmission and ventilationImprove the isolation effectSky-lights/domesPower-operated mechanismMining engineeringStructural engineering
Owner:北京吉紫采光技术有限公司
Sealed trunk lid mechanism of dumper
PendingCN107757449ASimple structureSolve the airtight problemRolling contact bearingsSteering linkagesEngineeringSelf weight
The invention discloses a sealed trunk lid mechanism of a dumper. The sealed trunk lid mechanism comprises guide rails, a scissor mechanism, flat plates and transverse stabilizer bars, wherein the scissor mechanism and the transverse stabilizer bars are connected through center holes of the stabilizer bars and center holes of the scissor mechanism; two ends of the transverse stabilizer bars are connected to the flat plates; the length of each of the transverse stabilizer bars is greater than that of each of the flat plates and is greater than the width of the trunk; and two ends of each of thetransverse stabilizer bars can slide along the guide rails in the transverse direction. Through the adoption of the sealed trunk lid mechanism of a dumper provided by the invention, the problems of untight sealing, high cost and the like of a conventional sealed trunk lid of the dumper can be effectively solved; and the sealed trunk lid mechanism disclosed by the invention has the advantages of being simple in structure composition, low in cost, good in sealing performance, light in self weight and the like.
Owner:HUBEI UNIV OF AUTOMOTIVE TECH
White ant fumigating treating method for log
InactiveCN1552203AImprove adhesionPrevent leakageInsect catchers and killersPolyvinyl chlorideEngineering
A fumigating method for killing the termite in timber includes such steps as adhering the PVC films to both ends of a timber for sealing them, binding the PVC film on the surface of said timber for preventing air leakage, and injecting the fumigant (sulfuryl chloride or methyl bromide) into said timber by use of PQF-I injector. Its advantage is high effect.
Owner:PLANT & FOOD INSPECTION & QUARANTINE TECHN CENT SHENZHEN BUREAU FOR ENTRY & EXIT INSPECTION & QUARANTINE
Dusting machine
InactiveCN107281837ASolve the airtight problemEasy to exportDispersed particle filtrationTransportation and packagingElectric motorEngineering
The invention discloses a dusting machine which comprises a shell, a dusting component, a dust collection groove and a dust cleaning device. An air inlet and an air outlet are formed in the shell, the dusting component is positioned in the shell and comprises a frame and a filter bag, the frame is arranged on the shell, the filter bag sleeve the frame, the dust collection groove is positioned below the filter bag, the dust cleaning device comprises a connecting portion, a motor and a sealing part, the connecting portion is arranged on the filter bag, the motor is used for driving the connecting portion to motion, the sealing part is positioned outside the shell and has elasticity, the connecting portion is provided with one end, the end penetrates the shell and is lined with an output wheel of the motor, one end of the sealing part is fixedly connected with the shell, and the other end of the sealing part sleeves the one of the connecting portion penetrating the shell. By the aid of the structure, the dusting machine can achieve closeness of the shell in the vibrating and dust cleaning process, and dust can be easily discharged from the shell.
Owner:JIANGYIN BAISHUN TECH
Double-leaf protection closed door for large underground space cave entrance
ActiveCN100567689CSolve the sealing problemAvoid destructionBuilding locksSealing arrangementsShock waveLocking mechanism
A new double-leaf protective airtight door for a large underground space opening, including a door leaf, a door frame, a sealing strip, a hinge, and a linkage locking mechanism; , installed in the abdominal cavity of the door leaf, the connecting rod between the two rows of locks is connected to the gear box in the middle that can be operated by a rocker, each lock is composed of a bevel gear transmission system and a connecting rod; the left and right door leaves include inner panels , the outer panel and the frame of the door leaf, one of the door leaves has a chamfered edge on the middle seam edge, and the other door leaf has a convex angle on the middle seam edge, so that the middle seam between the two door leaves is a folded surface, and the chamfered slope and the convex angle slope are tightly fitted. With the same inclination, the chamfered slope and the protruding slope are all pasted with elastic sealing rubber sheets. This kind of slope sealing solves the sealing problem of the door leaf and the door frame, and effectively avoids the damage of the shock wave to the seam sealing strip.
Owner:ENG DESIGN RES INST OF SECOND ARTILLERY PLA
Dust collection device
ActiveCN103252139BSolve the airtight problemEasy to exportDispersed particle filtrationDust controlEnvironmental engineering
The invention discloses a dust collection device. The dust collection device comprises an enclosure, a dust collection part, an ash collection groove and an ash cleaning device, wherein the enclosure is provided with an air inlet and an air outlet; the dust collection part is arranged in the enclosure; the dust collection part comprises a framework arranged on the enclosure and a filtering bag sleeved on the framework; the ash collection groove is located below the filtering bag; the ash cleaning device comprises a connection part arranged on the filtering bag, a motor for driving the connection part to move and a sealing piece which is located outside the enclosure and has elasticity; the connection part is provided with one end which penetrates out of the enclosure and is linked with an output wheel of the motor; one end of the sealing piece is fixedly connected with the enclosure; and the other end of the sealing piece is sleeved at one end of the connection part, which penetrates out of the enclosure. With the adoption of the structure, the sealing problem of the enclosure in a vibration and ash-cleaning process can be solved, and dust can be easily led out of the enclosure.
Owner:TAIKANG KITCHEN SCI TECH SUZHOU CITY
A kind of regeneration method of deactivated catalyst
ActiveCN109926103BGuarantee vulcanization qualityReduce dosageCatalyst regeneration/reactivationRefining to eliminate hetero atomsSimple Organic CompoundsOrganic sulfide compound
The present invention provides a method for regenerating a deactivated catalyst. The regeneration method includes the following contents: (1) contacting the hydrogenation catalyst to be regenerated with an oxygen-containing gas to carry out charcoal treatment to obtain a catalyst A; (2) combining the catalyst A with an oxygen-containing gas. The organic compound solution is contacted and subjected to heat treatment to obtain catalyst B; (3) organic sulfide and hydrazine hydrate are introduced into catalyst B, and then heat treatment is performed to obtain a regenerated catalyst. The regeneration method can improve the activity of the regenerated catalyst.
Owner:CHINA PETROLEUM & CHEM CORP +1
A Method for Field Calibration of Ground Hydraulic Tester
ActiveCN104568078BAvoid precisionSolve the problem of airtightnessTesting/calibration apparatusFluid pressure measurementCalculation errorEngineering
The invention relates to a method for on-site calibration of a ground hydraulic tester, which is especially suitable for the calibration requirements of digital display meters that are difficult to disassemble on large equipment. The working site is used to provide reference signals for the power supply system of airborne experimental equipment. Based on the characteristics that the calibrator can directly measure the pressure value and is light and easy to carry, it will pass the verification / calibration of the superior institution, and the accuracy level is five times higher than that of the digital display meter being calibrated. The above calibrator is used as the standard equipment for calibration, and directly measures the output pressure value of the equipment being calibrated at the work site, and calculates the error and uncertainty to obtain complete and accurate calibration data. This method can calibrate the digital display meter on site.
Owner:HARBIN
Upper rigidity contact net electric subway integral elevating translational type interval partition door
ActiveCN101275454BSolve the airtight problemSolve the problem of uneven compressionRailway componentsWing arrangementsDevice formEngineering
The invention relate to an upper rigid centenary system electrical subway integral lifting translation type interval partition door, comprising a interval partition door leaf over a track, a door frame, a hinge connecting the door leaf with the door frame and a locking device, the joint between the inside surface upper edge of the interval partition door leaf and the inside surface of the door frame is equipped with an upper part movable cover plate device. The lower surface of the upper part movable cover plate device and the upper surface of an upper lifting sealing device form a sealing abutted surface. The upper part of the upper lifting sealing device, relative to a rigid catenary system and the lower surface of a wire, is fixed with a profile modeling sealing rubber block. By using an integral lifting translation type hinge and setting the upper lifting sealing device, closing in place is realized without the wire being disconnected, the transformation from peacetime to wartime is fast. In addition, the upper part movable cover plate device and the upper lifting sealing device employ profile modeling sealing structure, which effectively solves the closing difficulty of the upper rigid catenary system, the structure is simple, and the closing property is reliable.
Owner:ENG DESIGN RES INST OF SECOND ARTILLERY PLA
A kind of start-up method of sulfurized catalyst
ActiveCN109926101BGuarantee vulcanization qualitySolve the airtight problemCatalyst activation/preparationHydrocarbon oil crackingPtru catalystHydrogenation reaction
The invention discloses a start-up method of a sulfide catalyst. The start-up method includes the following contents: loading a sulfide hydrogenation catalyst composition into a reactor, performing nitrogen airtightness, and gradually introducing hydrogen after passing the nitrogen airtightness, and carrying out Hydrogen is air-tight at low pressure, and after the low-pressure air-tightness is qualified, the temperature is raised and the pressure is increased for high-pressure air-tightness; after the high-pressure airtightness is qualified, the pressure is adjusted to the reaction pressure until the vulcanization is completed, and finally the temperature is adjusted to the reaction temperature, and the raw material oil is fed to start the hydrogenation reaction. The start-up method can not only ensure the vulcanization quality of the catalyst, but also solve the airtight problem of the device, and has no pollution to the environment, and is economical and environmentally friendly.
Owner:CHINA PETROLEUM & CHEM CORP +1
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