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30results about How to "Effective extension" patented technology
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Underground multi-stage intelligent high pressure gas pulse formation fracturing device and method thereof
The invention discloses an underground multi-stage intelligent high pressure gas pulse formation fracturing device and a method thereof, belongs to the technical field of fracturing completion of oil and gas wells, and particularly relates to two technical sachems of the device and the method. The method is used for fracturing the underground layer by the underground multi-stage intelligent high pressure gas pulse formation fracturing device. The device is controlled by each stage of intelligent pressure encoding detonator to gradually detonate by stages at proper time to generate a large amount of high pressure gas according to the set working mode, the dynamic high pressure pulse pressure is formed in the well or holes of a formation, the formation is fractured to form a plurality of cracks, and the permeability of fluid in the formation is increased, so the oil and gas are easily produced. The device and the method have the advantages that the cyclic multiple pressure pulses which are controlled at proper pressure can be generated, so the formation can generate the compression-expansion-compression alternating 'resonance', the cracks are promoted to effectively extend, and a new fracturing network is formed, so the permeability of the formation is improved; the pollution to the formation and environment in the fracturing process is avoided; the method is suitable for the water-sensitive and acid-sensitive formation; the construction cycle is short, the cost is low, the equipment is simple and convenient, and the limitation by terrain and water sources is avoided.
Owner:ZHONGBEI UNIV
Method for realizing effective sealing of end part of hydraulic crack
ActiveCN109958424AImprove effectivenessImprove supply capacityFluid removalApparent densityMass ratio
The invention discloses a method for realizing effective sealing of the end part of a hydraulic crack. The method includes the steps that mixed-particle-size ultra-low-density proppant and soluble fiber are mixed and injected into the end part of the crack; the apparent density of the proppant is 1.05-1.25g / cm<3>; the mixed-particle-size proppant of 140-230 meshes and 70-140 meshes is used; the fiber length is 1-2 cm; and the mass ratio of the fiber to the proppant is (1 to 10) to (1 to 20). The length of the paving front edge of the proppant is equal to that of the crack generation, and the length of the proppant is 10-15m from the crack end to the near-well direction, the crack generation width is greater than or equal to the support width, and the error of the support crack width and the crack generation length on the corresponding length is within 10%. The method improves the effectiveness of the sealing of the end part of the hydraulic crack so that the crack after temporarily sealed can be effectively turned and extended to the far-well region, the complexity and the reformed volume and the complexity within the full length of a main crack are improved to solve the limitationof the current technology, and the reservoir yield-increasing effect is maximized.
Owner:CHINA PETROLEUM & CHEM CORP +1
Realty information management network system and its realizing method
InactiveCN1722172AImprove work efficiencyImprove management toolsData processing applicationsSpecial data processing applicationsShort Message ServiceDatabase server
The invention relates to domain information managing network system and its achieving method. The system is formed by database, Web checking, short message terrace, telephone checking server, exchanging and checking client end, IC card, IC card read-write equipment and so on. The country system, local system, province system and national system form the four-grade network system. The invention uses database server and IC card synchronal information to connect industry, taxation, financial institution, exchanging institution and intermediary institution into the system so as to achieve digital domain information unity management, and provide the checking mode such as internet, local area network, handset short message and telephone and so on.
Owner:王跃达
Dense reservoir long horizontal well limit clustering perforation fracturing method
ActiveCN110984943AReduce the number of holesHigh degree of controlFluid removalHorizontal wellsUnconventional oil
The invention belongs to the technical field of oil reservoir measure yield increase in oil production engineering, and particularly relates to a dense reservoir long horizontal well limit clusteringperforation fracturing method. The perforation opening efficiency is improved by greatly reducing the number of single cluster holes, the uniformity of fluid distribution among a plurality of clustersis greatly improved, multi-cluster balanced crack initiation and effective extension are achieved, then the number of intra-segment clustering perforation clusters is greatly increased, and the control degree of single-segment cracks on the oil layer segment length is improved. On the premise that the fracturing transformation strength is not reduced, multi-cluster cracks can be better effectively opened, and full transformation of a dense reservoir horizontal well is achieved. The effectiveness of the intra-segment multi-cluster fracturing cracks can be effectively improved, the control degree of the single-segment cracks on the oil layer segment length is improved, the number of fracturing segments is greatly reduced, the construction efficiency is improved, the operation cost is reduced, and the method has wide application prospects in the aspect of efficiency improvement and reduction of unconventional oil and gas long horizontal wells.
Owner:PETROCHINA CO LTD
Compound adsorbent based on hippophae rhamnoides linn branches and trunks and preparation method of compound adsorbent
ActiveCN104368308AImprove adsorption capacityResidue reductionOther chemical processesWater contaminantsWastewaterHippophae rhamnoides
The invention relates to a compound adsorbent based on hippophae rhamnoides linn branches and trunks. The compound adsorbent is produced by the following steps: preparing hippophae rhamnoides linn charcoal by the hippophae rhamnoides linn branches and trunks, and loading nano Fe3O4 grains. The invention further provides a preparation method of the compound adsorbent. The national resource quantity of the hippophae rhamnoides linn branches and trunks is great; and the compound adsorbent is prepared by taking waste biological resources of the hippophae rhamnoides linn branches and trunks as raw materials so that the industrial chain of utilizing the hippophae rhamnoides linn branches and trunks is effectively lengthened. The obtained compound adsorbent can be used for treating doxycycline organic pollutant wastewater and can be regenerated.
Owner:CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST
Elastic waistline manufacturing device
ActiveCN113662751AEffective extensionEfficient formationAbsorbent padsBaby linensStructural engineeringAssembly line
The invention relates to the field of disposable hygienic products, in particular to an elastic waistline manufacturing device which comprises a rack, and an elastic film unwinding mechanism, a low-speed driving roller, a high-speed driving roller, a composite station, a fastening device, a middle driving roller, a cutting device, a tension buffering mechanism and an output driving roller which are arranged on the rack according to an assembly line. An upper non-woven fabric conveying mechanism and a lower non-woven fabric conveying mechanism are arranged on the portion, located at a composite station, of the rack, a plurality of welding point positions are arranged on the fastening device, a partition line is formed by the welding point positions, the included angle between the projection of the partition line on the horizontal plane and the advancing direction of the assembly line is 25-35 degrees, and the cutting device is provided with a plurality of cutting parts used for forming cutting units on sheets. The technical problem that an elastic waistline manufacturing device which can achieve good breathability and is comfortable to wear does not exist in the field of existing disposable hygienic products is solved.
Owner:QUANZHOU HANWEI MACHINERY MFG
Tandem mill board and base adjusting method thereof
ActiveCN109365537APrecise extensionEffective extensionMetal rolling stand detailsMetal rolling arrangementsMultiple frameEngineering
The invention relates to the field of multi-frame mill installation, in particular to a tandem mill board and a base adjusting method thereof. The method is characterized by comprising the following steps: (1) equal height blocks are prepared; (2) the equal height blocks are erected; (3) the longitudinal centers of mill bases are aligned by using the equal height blocks; (4) inlet and outlet basesof the mill bases are horizontally aligned by using the equal height blocks; (5) the adjacent mill bases are horizontally aligned by using the equal height blocks; (6) the parallelism of the outlet bases of adjacent mills is aligned by using the equal height blocks; and (7) the frame parallelism of the adjacent mills is adjusted by using the equal height blocks. Compared with a traditional tandemmill board and a base adjusting method thereof, the adjusting method uses the equal height blocks for auxiliary measurement, so that a mounting reference surface can effectively extend precisely, andthe equipment mounting progress is accelerated when the detecting precision is improved.
Owner:SHANGHAI ERSHIYE CONSTR CO LTD +1
Test method for rapidly evaluating leveling and sagging properties of water-based polymer material by using rotational rheometer
ActiveCN111175190AReduce dosageThe detection process is fastFlow propertiesPolymer sciencePolymer chemistry
The invention relates to a test method for rapidly evaluating leveling and sagging properties of a water-based polymer material by using a rotational rheometer. Specifically, the method can be used for quickly, directly and efficiently testing and evaluating the leveling and sagging properties of the water-based polymer material by adopting the rotational rheometer.
Owner:NIPPON PAINT CHINA
Concrete conveying belt with cleaning function and with height-adjustable supporting feet
The invention discloses a concrete conveying belt with a cleaning function and with height-adjustable supporting feet. The concrete conveying belt comprises a fixing stop block, a conveying belt outershell and a driving wheel, wherein vertical telescopic rods are arranged under the conveying belt outer shell; a telescopic control valve is arranged on the left side of each vertical telescopic rod;a universal wheel is arranged under each vertical telescopic rod; a fixing control valve is arranged under each vertical telescopic rod and near the right side of the corresponding universal wheel; and a control panel is arranged on the front surface of the conveying belt outer shell in an embedded mode. A cleaning brush is arranged below the conveying belt, can effectively clean up impurities onthe conveying belt, and prevents mud impurities on the conveying belt from adhering to subsequent workpieces. The left side of the conveying belt outer shell is in an open state, and length connection of the conveying belt can be conducted effectively. The supporting feet of the conveying belt are telescopic so that the conveying belt can conduct both horizontal conveying and vertical conveying,and the conveying efficiency is high.
Owner:颍上继红混凝土有限公司
Process for producing wax apple flower tea
The invention discloses a process for producing wax apple flower tea. The process comprises the following steps: (1) selecting wax apple flowers; (2) pretreating; (3) steaming for enzyme deactivation; (4) protecting color; (5) cooling; and (6) drying. The wax apple flower tea produced by the process disclosed by the invention remains the complete shape and unique faint scent of the wax apple flowers, has good health and slimming and beautifying effects and is high in quality and controllable in quality, the income can be increased by over 30 percent after the wax apple flower tea is put into production, and the economic benefits are obvious. Moreover, an industrial chain of wax apple cultivation can be effectively extended, and the process has great significance for forming a complete wax apple planting system.
Owner:SANYA NANLU IND CO LTD
Downhole multi-stage intelligent high-pressure gas pulse fracturing device and method
Owner:ZHONGBEI UNIV
Fig-flavored yoghurt and preparation method thereof
InactiveCN109645122AImprove processing valueEffective extensionMilk preparationFruit juiceFreeze-drying
The invention discloses fig-flavored yoghurt. Fig juice is made of fresh figs, then freeze-dried fig powder, 95% edible alcohol and a complex enzyme are mixed, ultrasonic enzymolysis is carried out onthe mixture, after centrifugation, a supernatant is concentrated to 10%-15% of the original volume to obtain a fig extract, the extract is added into the juice to be stirred and mixed, and sterilization is carried out to obtain a raw material solution. The raw material solution is added into reconstituted milk to be mixed, active compound lactobacillus is inoculated, low-frequency fermentation, cooling and post-ripening and filling are carried out, and the fig-flavored yoghurt can be obtained. The fig-flavored yoghurt has the advantages that the texture and taste of the product are better, the strong milk flavor and the special flavor of the figs go nicely with each other, the taste is mellow and thick, the nutrition is rich, a compound stabilizer obtained through repeated experiments solves the problem that a small part of to-be-hydrolyzed macromolecular substances easily affect the stability of protein in dairy products so that the yoghurt can always keep a system stable in the shelf life and has a huge market prospect.
Owner:四川久润泰科技有限公司
Method for installing and adjusting rail base of high-precision roll grinder
ActiveCN110230749AEasy to adjustEffective extensionGrinding carriagesMachine framesEngineeringMechanical engineering
Owner:SHANGHAI ERSHIYE CONSTR CO LTD +1
Electric hoist test power-enhanced weight system and using method thereof
PendingCN110160817AReduce weightImprove matching efficiencyStructural/machines measurementTest powerEngineering
The invention relates to an electric hoist test power-enhanced weight system and a using method thereof. The electric hoist test power-enhanced weight system comprises a pit with an anchoring device arranged at the bottom, and the top of the anchoring device extends out of a ground anchor lifting hook; the bottom of a power enhancing device is provided with a lower lifting hook connected with theground anchor lifting hook, the top of the power enhancing device extends out of an upper lifting hook, the side edge extends out of a weight lifting hook, and the weight lifting hook is hung with a weight assembly; a steel wire rope in connection with the weight lifting hook sequentially penetrates through a plurality of pulleys to achieve power enhancement; during hoisting, the anchoring device,the power enhancing device and the weight assembly are all contained in the pit, the upper lifting hook is hooked and protruded out of the ground by the electric hoist lifting hook and moves along atest bed together with the electric hoist lifting hook, the ground anchor lifting hook is pulled up to move along the anchoring device by the lower lifting hook, and the weight assembly is pulled up to move synchronously by the weight lifting hook. According to the electric hoist test power-enhanced weight system and the using method thereof in the invention, the load of the weight during the testof the electric hoist is reduced, the operational test of the electric hoist is effectively realized, the weight type is simplified, the weight assembly is convenient and fast to assemble and disassemble, and the test speed and efficiency are greatly improved.
Owner:SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
A composite adsorbent based on seabuckthorn branches and its preparation method
ActiveCN104368308BImprove adsorption capacityResidue reductionOther chemical processesWater contaminantsWastewaterHippophae rhamnoides
The invention relates to a compound adsorbent based on hippophae rhamnoides linn branches and trunks. The compound adsorbent is produced by the following steps: preparing hippophae rhamnoides linn charcoal by the hippophae rhamnoides linn branches and trunks, and loading nano Fe3O4 grains. The invention further provides a preparation method of the compound adsorbent. The national resource quantity of the hippophae rhamnoides linn branches and trunks is great; and the compound adsorbent is prepared by taking waste biological resources of the hippophae rhamnoides linn branches and trunks as raw materials so that the industrial chain of utilizing the hippophae rhamnoides linn branches and trunks is effectively lengthened. The obtained compound adsorbent can be used for treating doxycycline organic pollutant wastewater and can be regenerated.
Owner:CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST
Compression-resistant protective film and rolled film storage mechanism
The invention relates to the field of protective films, and discloses a compression-resistant protective film and a rolled film storage mechanism. The compression-resistant protective film comprises an upper buffer layer, an upper elastic net, a lower elastic net, a lower buffer layer, a microsphere layer and an airbag layer, wherein the upper buffer layer is provided with a plurality of upper grooves; the upper elastic net is connected to one side surface of the upper buffer layer, and a plurality of upper net holes are formed in the upper elastic net; the lower elastic net is connected to the side face, away from the upper buffer layer, of the upper elastic net, and a plurality of lower net holes are formed in the lower elastic net; the lower buffer layer is connected to one side surface, far away from the upper elastic net, of the lower elastic net, and a plurality of lower grooves are formed in the lower buffer layer; the microsphere layer is contained between the upper buffer layer and the lower buffer layer, the microsphere layer comprises a plurality of porous microspheres, the upper grooves, the upper net holes, the lower net holes and the lower grooves jointly form a containing cavity, and the porous microspheres are contained in the containing cavity; and the airbag layer is connected to one side surface, far away from the lower elastic net, of the lower buffer layer.The compression-resistant protective film has the advantages of extrusion resistance, stamping resistance, favorable ductility and no residual adhesive after stripping.
Owner:HUIZHOU HAOMING SCI & TECH
Elastic sheet manufacturing device
ActiveCN113715459AAchieve penetrationImprove breathabilityLamination ancillary operationsLaminationEngineeringAssembly line
The invention relates to the field of disposable hygienic products, in particular to an elastic sheet manufacturing device which comprises a rack, an elastic film unwinding mechanism, a low-speed driving roller, a high-speed driving roller, a compounding station, an ultrasonic device, a middle driving roller, a cutting device, a tension buffering mechanism and an output driving roller, and the elastic film unwinding mechanism, the low-speed driving roller, the high-speed driving roller, the compounding station, the ultrasonic device, the middle driving roller, the cutting device, the tension buffering mechanism and the output driving roller are arranged on the rack according to an assembly line. An upper base material conveying mechanism and a lower base material conveying mechanism are arranged on the rack and located at the compounding station, a plurality of welding point positions are arranged on the ultrasonic device, a partition line is formed by the welding point positions, the included angle between the projection of the partition line on the horizontal plane and the advancing direction of the assembly line is 25-35 degrees, and the cutting device is provided with a plurality of cutting parts used for forming cutting units on the sheets. The technical problem that an elastic sheet manufacturing device which is good in breathability and comfortable to wear does not exist in the field of existing disposable hygienic products is solved.
Owner:QUANZHOU HANWEI MACHINERY MFG
Device for measuring ultralow gas flow
ActiveCN101995277BAvoid Measurement UncertaintyEffective extensionVolume/mass flow by thermal effectsCapacitanceGas cylinder
The invention relates to a device for measuring ultralow gas flow, which comprises a gas bottle, a micrometering valve, a pressure stabilizing chamber, four valves, a getter pump, a molecular pump, a backing pump, a capacitor film gauge, a magnetic suspension rotor gauge and a small hole, wherein the gas bottle is connected with the pressure stabilizing chamber by the micrometering valve; after the small hole is connected in parallel with a valve 2, one end of the small hole is connected with the pressure stabilizing chamber by a valve 1, and the other end of the small hole is connected with a vacuum system; the getter pump is connected with the pressure stabilizing chamber by a valve 3; the backing pump is connected in series with the molecular pump and is connected with the pressure stabilizing chamber by a valve 4; and the capacitor film gauge and the magnetic suspension rotor gauge are directly connected to the wall of the pressure stabilizing chamber. The device for measuring theultralow gas flow adopts the getter pump to carry out gas extraction on the pressure stabilizing chamber and a vacuum pipeline thereof, completely avoids the uncertainty of measurement, which is caused by gas bleeding of the inner walls of the pressure stabilizing chamber and the pipeline, guarantees effective extension of the lower measurement limit and can accurately measure the ultralow gas flow of which the flow value is less than 1*10<-8>Pa.m<3> / s.
Owner:NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
Efficient energy-saving elevator door motor and control system thereof
PendingCN111371229AInstallation helpEase of internal maintenanceMechanical energy handlingSupports/enclosures/casingsDevice PlateForeign matter
The invention relates to an efficient energy-saving elevator door motor and a control system thereof. The motor comprises a rack, a rotary cover and a reinforcing frame. The middle part of the rack isconnected with an equipment plate. A fastening column is arranged on one side of the interior of the equipment plate. A limiting plate is arranged on one side of the top end of the equipment plate. One side of the outer part of the rack is connected with a hood. A connecting bolt is mounted in the middle of the hood. A rotary cover is arranged on one side of the connecting bolt. The top end of the rotary cover is connected with a motor system device. The reinforcing frame is arranged at the bottom end of the rotary cover. A sliding groove column is arranged at the bottom end of the equipmentplate. Sliding boxes are arranged on the two sides of the sliding groove column. The elevator door motor has the beneficial effects that the belt between the elevator belt pulleys effectively penetrates through the space between the isolation plate and the belt hole, so that the belt of the elevator belt pulleys has an independent rotating space, foreign matters are prevented from entering the belt of the elevator belt pulleys, the foreign matters are prevented from entering the efficient energy-saving elevator door motor, and the failure rate of the efficient energy-saving elevator door motoris reduced.
Owner:HAIAN COUNTY SHENLING ELECTRICAL APPLIANCE MFG
A method for installing and adjusting the rail seat of a high-precision roll grinder
ActiveCN110230749BEasy to adjustEffective extensionGrinding carriagesMachine framesMechanical engineeringIndustrial engineering
Owner:SHANGHAI ERSHIYE CONSTR CO LTD +1
Adjustment method of archway and base of continuous rolling mill
ActiveCN109365537BPrecise extensionEffective extensionMetal rolling stand detailsMetal rolling arrangementsStructural engineeringContinuous rolling
The invention relates to the field of multi-frame mill installation, in particular to a tandem mill board and a base adjusting method thereof. The method is characterized by comprising the following steps: (1) equal height blocks are prepared; (2) the equal height blocks are erected; (3) the longitudinal centers of mill bases are aligned by using the equal height blocks; (4) inlet and outlet basesof the mill bases are horizontally aligned by using the equal height blocks; (5) the adjacent mill bases are horizontally aligned by using the equal height blocks; (6) the parallelism of the outlet bases of adjacent mills is aligned by using the equal height blocks; and (7) the frame parallelism of the adjacent mills is adjusted by using the equal height blocks. Compared with a traditional tandemmill board and a base adjusting method thereof, the adjusting method uses the equal height blocks for auxiliary measurement, so that a mounting reference surface can effectively extend precisely, andthe equipment mounting progress is accelerated when the detecting precision is improved.
Owner:SHANGHAI ERSHIYE CONSTR CO LTD +1
Medicine applying device for thoracic surgery department
InactiveCN112755374AAvoid dead endsLimit the range of rotationMedical devicesThoracic surgery departmentBiomedical engineering
The invention discloses a medicine applying device for the thoracic surgery department. The medicine applying device structurally comprises a handle, a baffle, a medicine cylinder, a medicine applying pipe, an inflation bag and a spray head, wherein the handle is fixedly connected to one end of the medicine cylinder through the baffle, and the other end of the medicine cylinder is connected with the medicine applying pipe in a sleeving mode; the medicine applying pipe is welded to the top of the inflation bag; the spray head is installed at the bottom of the inflation bag; a clamping part and an opening structure are arranged in an adjusting device; the opening structure and a fixed sleeve are matched on the two sides of the clamping part; and when medicine liquid is sprayed to the stacking position in the esophagus, the stacking position is clamped at the bottom of the adjusting device, the opening structure is inserted into the stacking position, the clamping part is stressed to drive the opening structure to twist and expand towards the two sides, wrinkles of the affected part can be effectively opened, medicine applying dead corners are avoided, and saturated spraying is carried out in cooperation with a medicine spraying cavity.
Owner:刘英兰
High-antioxidant-activity fig fermentation beverage and preparation method thereof
InactiveCN109770140AImprove processing valueEffective extensionFood scienceLactic acid fermentationFermentation
The invention discloses a high-antioxidant-activity fig fermentation beverage and a preparation method thereof. Entire fresh figs are adopted to be subjected to ultrasound pretreatment at the temperature of 30-35 DEG C, and afterwards, enzymolysis is conducted under the help of four-strain three-stage fermentation; under the multi-process combined action, escape of antioxidant active ingredients and nutrient substances of the figs is accelerated, the fig lactic acid fermentation viscosity is reduced, the taste of the product is more smooth and finer, in the initial fermentation stage, the antioxidant activity of fermentation liquor is obviously improved, in the later fermentation stage, a good flavor is formed, and finally, the flavor and the activity of the fermentation liquor are both excellent. Besides, by adding maltose, the intestinal flora can be adjusted, the synergistic effect of prebiotics in the figs is improved, and the antioxidant effect is better. Barriers in the traditional fig processing process are broken over, the fig industry chain can be effectively extended, the fig processing value is improved, agriculture industrialization is promoted, and therefore, the situation that the fresh figs are not eaten in time to cause overstock and rot is avoided.
Owner:四川久润泰科技有限公司
Hub positioning device for automobile detection
PendingCN114354212APlay a limiting roleEffective extensionVehicle testingWork holdersAutomotive engineeringMechanical engineering
The invention discloses a wheel hub positioning device for automobile detection, which structurally comprises a fixed seat, an adjusting piece, a stop block, a platform, a limiting device, a lifting frame and a hydraulic rod. When the wheel hub positioning device is used, an operator moves an automobile onto the platform, and front and rear wheels of the automobile are respectively arranged on a corner disc and a rear wheel tray; the two extension clamping pieces abut against the two sides of the wheel, then the butt joint limiting piece extends into the wheel, the extension clamping pieces can be assisted to limit the wheel, the wheel and the corner disc can rotate at the same amplitude under the action of the extension clamping pieces, and the corner disc conducts positioning debugging on the wheel through the corner disc.
Owner:SHANDONG POLYTECHNIC COLLEGE
A method of extreme cluster perforation fracturing for long horizontal wells in tight reservoirs
ActiveCN110984943BReduce the number of holesHigh degree of controlFluid removalHorizontal wellsOil production
The invention belongs to the technical field of oil reservoir measures to increase production in oil production engineering, and in particular relates to an extreme cluster perforation fracturing method for long horizontal wells in tight reservoirs. The invention improves the perforation opening efficiency by greatly reducing the number of holes in a single cluster, greatly improves the uniformity of fluid distribution among multiple clusters, realizes the balanced initiation and effective extension of multiple clusters, and further greatly increases the number of perforation clusters in clusters. The number increases the degree of control of single-segment fractures on the length of oil layers. The invention can better realize the effective opening of multi-cluster fractures and realize full stimulation of horizontal wells in tight reservoirs without reducing the intensity of fracturing stimulation. The present invention can effectively improve the effectiveness of multi-cluster fracturing fractures in a section, improve the control degree of single-section fractures on the length of oil layer sections, greatly reduce the number of fracturing sections, improve construction efficiency, and reduce operating costs. It has broad application prospects in improving efficiency and reducing costs.
Owner:PETROCHINA CO LTD
Air deflector structure and air conditioner using same
PendingCN112161395AEffective extensionIncrease air volumeLighting and heating apparatusNoise suppressionThermodynamicsAir volume
The invention particularly discloses an air deflector structure and an air conditioner using the same. The air deflector structure comprises a second air deflector and a first air deflector, the firstair deflector and the second air deflector are arranged at a first air outlet in the tail end of a bottom shell in an overlapping and intersecting mode, the rotating center point of the second air deflector is arranged on the upper side of the first air outlet, the rotating center point of the first air deflector is arranged on the lower side of the first air outlet, the first air deflector and the second air deflector rotate towards the outer side of the first air outlet to be opened to form a second air outlet, the plate length H2 of the second air deflector is larger than or equal to the distance h2 from the rotating center point of the second air deflector to the exterior of the air conditioner, and the plate length H1 of the first air deflector is larger than or equal to the distanceh1 from the rotating center point of the first air deflector to the exterior of the air conditioner. The second air deflector forms an effective extending air duct of the first air outlet and plays arole in diffusion and resistance reduction, so that the air volume of the air conditioner is increased, noise and power consumption are reduced, hot air flow can be effectively pressed downwards, andthe carpet type heating effect is achieved.
Owner:GREE ELECTRIC APPLIANCES INC
Combined forging die
InactiveCN112935169ALocation restrictionsReduce contact areaForging/hammering/pressing machinesPhysicsEngineering
The invention discloses a combined forging die. The combined forging die structurally comprises a lower die body, an upper die body, protection springs, an extrusion plate, positioning devices and a base. During use of the combined forging die, an adjusted chuck is blocked through cooperation of friction plates and auxiliary friction plates, so that a supporting rod can be adjusted to be in a certain balance state, the supporting rod can stably support the lower die body and the upper die body, and a die core between the upper die body and the lower die body is prevented from rotating; and then the lower die body and the upper die body are pushed and pressed through cooperation of adsorption pieces and protection pieces, so that the lower die body and the upper die body can be buckled together in parallel, it is guaranteed that convex and concave positions in the lower die body and the upper die body can be matched and correspond with each other, it is guaranteed that a blank of the die cannot be dislocated in the forming process, and the forming quality and forming efficiency of parts are improved.
Owner:浙江兔耀网络科技有限公司
A Photographic Auxiliary Tool for Digital Architectural Surveying and Mapping
ActiveCN112333376BAvoid getting wetWon't get wetTelevision system detailsSurveying instrumentsStructural engineeringMechanical engineering
Owner:深圳市华地岩土工程有限公司
Method for measuring minimum gas flow
ActiveCN102042852BAvoid Measurement UncertaintyEffective extensionVolume/mass flow by differential pressureEngineeringSmall hole
The invention relates to a method for measuring minimum gas flow, comprising the following steps of: (1) pumping gas out of a pressure stabilizing chamber and a vacuum connection pipeline; (2) integrally roasting a device for degassing; (3) enabling the pressure stabilizing chamber to reach ultimate vacuum with a magnitude order of 10-6Pa by using a getter pump; (4) controlling pressure in the pressure stabilizing chamber to slowly rise; (5) charging inert gas with certain pressure into the pressure stabilizing chamber and obtaining gas pressure; (6) leading the inert gas in the pressure stabilizing chamber into a vacuum system through small holes; and (7) obtaining gas flow by utilizing gas pressure and small hole conductance. The method can take good use of the characteristics of a device for measuring minimum gas flow, and completely avoids measuring uncertainty caused by the deflation of the pressure stabilizing chamber and the inner wall of the pipeline, thereby ensuring the effective extension of a lower measuring limit and realizing the accurate measurement of the minimum gas flow with a flow value less than 1*10<-8>Pa.m<3> / s.
Owner:NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
A Method for Realizing Effective Sealing of Hydraulic Fracture Ends
ActiveCN109958424BImprove effectivenessImprove supply capacityFluid removalSoluble fiberCurrent technology
The invention discloses a method for realizing effective sealing of the end part of a hydraulic crack. The method includes the steps that mixed-particle-size ultra-low-density proppant and soluble fiber are mixed and injected into the end part of the crack; the apparent density of the proppant is 1.05-1.25g / cm<3>; the mixed-particle-size proppant of 140-230 meshes and 70-140 meshes is used; the fiber length is 1-2 cm; and the mass ratio of the fiber to the proppant is (1 to 10) to (1 to 20). The length of the paving front edge of the proppant is equal to that of the crack generation, and the length of the proppant is 10-15m from the crack end to the near-well direction, the crack generation width is greater than or equal to the support width, and the error of the support crack width and the crack generation length on the corresponding length is within 10%. The method improves the effectiveness of the sealing of the end part of the hydraulic crack so that the crack after temporarily sealed can be effectively turned and extended to the far-well region, the complexity and the reformed volume and the complexity within the full length of a main crack are improved to solve the limitationof the current technology, and the reservoir yield-increasing effect is maximized.
Owner:CHINA PETROLEUM & CHEM CORP +1
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