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30results about How to "Timely conversion" patented technology
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Tunnel dredging method suitable for railway large section IV, V class rock tunnel
ActiveCN101105131ASimple and fast operationLarge construction spaceUnderground chambersTunnel liningRailway tunnelRock tunnel
The invention relates to the technical field of railway tunnel construction, specifically a digging method of IV and V-class surrounding rock railway tunnel with large cross section, aiming to solve the problems of the existing railway tunnel digging method including narrow operation space, low work efficiency, inflexible construction method, instable construction progress, high deformation potential of surrounding rock, and inconvenient operation. The method comprises performing leading support, digging arc-shaped pilot tunnel and preserving core soil; staggeredly digging left / right side walls of middle sidestep and preserving core soil; staggeredly digging left / right side walls of lower sidestep and preserving core soil; sequentially digging upper, middle and lower sidesteps and preserving core soil; and digging inverted arch and carrying out preliminary support. The invention has large construction space and high work efficiency, and can perform multi-job parallel operation. When the geologic conditions are changed, the invention can be flexibly and timely converted to other construction method. Preservation of core soil and left / right staggeredly digging are helpful to the stability of the digging working face. When the surrounding rock has large deformation, the invention can adjust closure time as soon as possible under the prerequisite of assuring safety and meeting requirements of clearance cross section.
Owner:CHINA RAILWAY 12TH BUREAU GRP +1
A copyright transaction method and device for pictures
PendingCN109727134AEnsure safetyGuaranteed validityFinanceProgram/content distribution protectionBlockchainDigital fingerprint
The invention provides a copyright transaction method and a copyright transaction device for pictures. The method comprises the following steps: receiving an original picture uploaded by a selling user and copyright owner information of the picture; Generating unique digital fingerprint information for the original picture, writing the digital fingerprint information into the block chain, and identifying all authorized users of the artificial digital fingerprint information of the copyright of the original picture; Receiving a transaction condition which is submitted by a selling user and aimsat the original picture, and adding a to-be-sold identifier to the original picture; And if a purchase operation of the purchase user on the original picture carrying the to-be-sold identifier is received and it is judged that the purchase operation conforms to the transaction condition of the original picture, changing the ownership user of the digital fingerprint information of the original picture into the purchase user. According to the scheme provided by the invention, unique digital fingerprint information is generated for the original picture and is written into the block chain, so that the security and effectiveness of copyright information of the original picture can be effectively ensured based on decentration, disclosure, transparency and non-tamper characteristics of the blockchain.
Owner:BEIJING QIHOO TECH CO LTD
Method for excavating mountain tunnels in weak surrounding rock-fractured zones or shallow covered slope sections
InactiveCN102678126AEasy to discharge slagImprove construction progressUnderground chambersTunnel liningShotcreteFracture zone
The invention discloses a method for excavating mountain tunnels in weak surrounding rock-fractured zones or shallow covered slope sections, which includes the following steps: (1) cover arch and forepoling; (2) tunnel cutting, including the following steps: (a) the annular part of the upper cross section of the portal of the buried tunnel is first cut, a core soil part is formed on the upper cross section, and an arch is formed; (b) combined bolting and shotcrete is carried out on the arch; (c) the core soil part is cut; (d) the lower cross section of the portal of the buried tunnel is cut; (e) first shotcrete and combined bolting and shotcrete are carried out on the left and the right sidewalls; (f) an inverted arch is lined and backfilled; (g) secondary lining is carried out; (3) step 2 is repeated until the leading pipe shed construction of the next tunnel section is carried out; (4) step 3 is repeated until the tunnel runs through the weak surrounding rock-fractured zone of a mountain. The construction space is large, multi-working face parallel operation can be carried out, and the working efficiency is high; and since the core soil is reserved on the upper cross section and the left and the right cross sections on the lower cross section are staggerly cut forward, the cut working face can be kept stable.
Owner:CHINA CONSTR SIXTH ENG DIV CORP
Excavation construction method for super large cross section tunnel of bias shallow buried weak surrounding rock
InactiveCN106979013AShorten the construction periodSimple stepsTunnelsProps/chocksEnvironmental geologyStructure of the Earth
The invention discloses an excavation construction method for a super large cross section tunnel of bias shallow buried weak surrounding rock. A temporary median lamella wall is adopted to divide a tunnel face into a left part and a right part; and the left part and the right part are excavated simultaneously through a three-bench-five-step method. According to the three-bench-five-step excavation method of the median lamella, when the geological condition changes, construction processes can be converted flexible and timely, the construction method is adjusted, and the construction period is shortened. The excavation method is simple in process and reliable in excavation, excavation of the super large cross section tunnel of the bias shallow buried weak surrounding rock is provided an important guarantee, the failure rate is low, and the project profitability is enhanced. A locking anchor pipe replaces a traditional locking anchor rod, the stability of the structure is also improved, meanwhile, steel pipes are adopted to fix steel frames, so that the steel frames form a whole through the connected steel pipes, the system bearing load is improved, the fixing effect of the steel frames is better, and control of tunnel deformation is very favorable.
Owner:CCCC SECOND HARBOR ENG
Washing machine door lock
ActiveCN103603170ASimple structureEasy to assembleOther washing machinesTextiles and paperEngineeringMechanical engineering
The invention discloses a washing machine door lock. The washing machine door lock comprises a lock case, a driving device, a locking part and a transmission device, wherein the lock case is provided with a bottom plate and a cover plate, the driving device is mounted in the lock case, the locking part is mounted in the lock case and capable of locking out of or retracting into the lock case, and the transmission device is arranged between the driving device and the locking part and converts rotary power of the driving device into force in the direction of driving the locking part to lock out and retract. Driven by the rotary power of the driving device, the transmission device linearly moves back and forth to drive the locking part to lock out or retract. In the washing machine door lock, the transmission device can directly convert the rotary movement of the driving device into self linear back-fourth movement to further drive the locking part to lock out or retract; the washing machine door lock is simple in structure, easy to assemble, few in arranged parts, high in transmission accuracy and capable of realizing timely locking out or retraction.
Owner:WENZHOU TIANJIAN ELECTRIC APPLIANCE
Voice processing method and device
ActiveCN111179929ALow intelligenceImprove matching successSpecial service for subscribersSpeech recognitionVoice communicationEngineering
The invention provides a voice processing method and device. The method comprises the steps: analyzing voice data after the voice data are obtained when a robot customer service carries out voice communication with a target user at a current moment so as to obtain emotion feature data corresponding to the voice data; inputting emotion features into a pre-trained voice emotion model; acquiring an emotion label corresponding to the emotion features and being output by the voice emotion model according to an emotion change relationship between the emotion label at the current moment and the emotion label at the previous moment and the emotion label at the current moment; and selecting proper switching time and ranking in a switching queue automatically. Therefore, the voice communication of the target user can be automatically added into the proper rank of the transfer queue at the proper transfer time; conversion from robot customer service to manual customer service is more timely, theproblem that a customer service call center system is low in intelligent degree is solved, and the technical effect of improving the matching success degree of a communication mode is achieved.
Owner:BANK OF CHINA
Silicon carbide high temperature vibration sensor with high sensitivity, high frequency response and anti-overload
ActiveCN109764954AHigh sensitivityAnti-overloadSubsonic/sonic/ultrasonic wave measurementUsing electrical meansCantileverHigh frequency
The invention discloses a silicon carbide high temperature vibration sensor with high sensitivity, high frequency response, and anti-overload. The silicon carbide high temperature vibration sensor comprises a silicon carbide chip, a silicon carbide bonding sheet, an insulation layer, a packaging shell, and a kovar pin; the silicon carbide chip comprises a supporting sheet body, a cantilever beam,and a mass block; the supporting sheet body and the silicon carbide bonding sheet form a bonding body; the mass block and the cantilever beam are arranged insidea cavity of the bondingbody, and the cantilever beam is provided with a chip circuit; and the kovar pin extends into a bonding material along through holes arranged on the package shell, the insulation layer and the silicon carbide bondingsheet, and is connected with the chip circuit. The high temperature vibration sensorhas the characteristics of high sensitivity, high frequency response and anti-overload, and the accurate and timelymeasurement of vibration signals in the high temperature environment can be realized.
Owner:XI AN JIAOTONG UNIV
Uplink frequency band conversion method and device in SUL mode
PendingCN111083725AImprove uplink perceptionTimely conversionTransmission monitoringWireless communicationTransmitted powerLow frequency band
The embodiment of the invention provides an uplink frequency band conversion method and device in an SUL mode. The method comprises the following steps: acquiring a terminal transmitting power marginand downlink reference signal strength; selecting a high frequency band or an SUL frequency band as an uplink use frequency band according to the terminal transmitting power margin and the downlink reference signal intensity; and notifying the terminal to convert the uplink use frequency band between the high frequency band and the SUL frequency band according to a selection result. According to the embodiment of the present invention, the uplink coverage level is evaluated by using the terminal transmission power margin and the downlink reference signal intensity, so that a user in a high-frequency band edge region can perform conversion between a high-frequency band and a low-frequency band in time, and the uplink perception of the user is effectively improved.
Owner:CHINA MOBILE GROUP DESIGN INST +2
Equipment for protecting LED downlight by adjusting illumination angle force
ActiveCN111810875ASolve the discomfortTimely conversionProtective devices for lightingLighting safety devicesCircular discEngineering
The invention relates to the technical field of LED lamps, and discloses equipment for protecting an LED downlight by adjusting illumination angle force. The equipment is characterized in that a corecomponent drives a main shaft to operate; a screw rod on the outer side of the lower end of the main shaft runs; the core component is meshed with a disc at the left end, so that the disc operates therewith; a round rod accessory is arranged at the axis of the disc; the round rod accessory is inserted into the disc and is movably connected with a metal rotating disc; teeth matched with the disc are arranged on the metal rotating disc; the teeth on the metal rotating disc interact with the disc to generate driving force; and through matched use of the metal rotating disc and the disc, the discrotates on a groove in the metal rotating disc at a constant speed, so that the lamp body fixedly connected above the metal rotating disc has the function of automatically adjusting the illumination angle, and the problem that eyes are uncomfortable at the moment when the lamp is just turned on when a user enters a house is solved.
Owner:海宁海之利照明有限公司
Novel intelligent vehicle lighting system in urban complex traffic environment and control method
InactiveCN108382293APay attention to driving safetyTimely conversionOptical signallingDriving safetySpeed bump
The invention discloses a novel intelligent vehicle lighting system in an urban complex traffic environment. The system comprises a vehicle lighting system and a vehicle control system and further comprises an image capture system, a central control system, an electronic display screen, a steering wheel angle measuring instrument used for measuring the rotation angle of a steering wheel in real time, a vehicle speed measuring device and a processor. The vehicle speed measuring device is a speed monitoring system of a vehicle. The vehicle speed is correlated with the steering wheel angle and can be converted into the limit angle of a steering device needing to be started in time, and the vehicle steering device is automatically started through the processor; external lamplight, object movement and image detection of an automobile data recorder are correlated with automobile lamplight and voice prompts, high beams and low beams can be converted in time, vehicle lamps are turned on in time when the vehicle travels at night, and prompts of speed bumps and an obstacle are given in time; and the prompts are displayed on a display screen to remind a driver to pay attention to driving safety, and therefore an intelligent vehicle lighting adjustment and control system is obtained.
Owner:ZHENGZHOU UNIV
Information pushing method and device and server
PendingCN111756827ATimely conversionIncrease exposureMarket predictionsTransmissionTime segmentCurrent cycle
The invention discloses an information pushing method and device and a server, and relates to the technical field of computers. The method comprises the following steps: determining a first time period corresponding to target push information; obtaining accumulated push consumption of the target push information in a second time period of the current period, wherein the second time period of the current period is a time period between the starting moment of the first time period of the current period and the current moment, and the current moment is a moment in the first time period of the current period; if the accumulated pushing consumption of the target push information in the second time period of the current period does not reach the target consumption, increasing the price adjustment coefficient of the target push information, determining the current exposure price of the target push information based on the increased price adjustment coefficient; and pushing the to-be-pushed information based on the sequence of the current exposure prices of the target push information and other push information. Therefore, the exposure probability of the target push information can be improved, so that the stability degree of the push consumption of the target push information is improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Tunnel dredging method suitable for railway large section IV, V class rock tunnel
ActiveCN100451295CLarge construction spaceFacilitate mechanized constructionUnderground chambersTunnel liningRailway tunnelRock tunnel
Owner:CHINA RAILWAY 12TH BUREAU GRP +1
Shuttlecock collection device for badminton training ground
InactiveCN111167090BGuaranteed orderly collectionImplement ordered collectionBall sportsEngineeringStructural engineering
The invention provides a shuttlecock collecting device for a badminton training field, which comprises a base, on which a ball picking mechanism, a filtering mechanism, a shuttlecock conveying mechanism, a shuttlecock collecting mechanism and a ball serving mechanism are sequentially arranged from left to right, and partitions are arranged between each mechanism The ball picking mechanism includes a third rotating shaft, on which a sweeping part is arranged; the filtering mechanism includes a conveying plate with several filtering holes at the bottom, and two electric lifting rods are arranged at the bottom; the badminton conveying mechanism includes a conveyor belt, The conveyor belt is provided with a guiding vibrator; the badminton collection mechanism includes a badminton collection bucket bracket with a barrel hole and a badminton collection bucket; the ball-serving mechanism includes a ball-catching base, and the ball-catching base is provided with a ball-catching part through an electric lifting rod. There is also an electric rotating disk near the right side of the ball-catching base, and the electric rotating disk is connected with the ball cylinder through the support; the device of the present invention is easy to operate, saves time and effort, has the functions of filtering dust, efficient and orderly collection, and can realize multi-angle serving The advantages.
Owner:SHAANXI TECHN INST OF DEFENSE IND
Online bidding and tendering method, device and system and storage medium
InactiveCN112085576ATimely conversionImprove confidentialityCo-operative working arrangementsDigital data protectionData miningCloud storage
The invention relates to an online bidding and tendering method, device and system and a storage medium; and the method comprises the steps: receiving a bidding document uploaded by a bidding terminal, and generating a two-dimensional code corresponding to a cloud storage address of the bidding document; downloading a bidding document by identifying the two-dimensional code at the bidding terminal, and acquiring equipment parameters of the bidding terminal after uploading the bidding document; obtaining a feature identifier and an equipment parameter of a bid evaluation terminal; according tothe equipment parameters of the bidding terminal and the bidding evaluation terminal, judging whether the bidding evaluation terminal can read a bidding document or not, and if not, converting the bidding document into the bidding document which can be read by the bidding evaluation terminal; encrypting the bidding document according to the feature identifier of the bid evaluation terminal to generate an encrypted bidding document; and sending the encrypted bidding document to the bidding evaluation terminal, so that the bidding evaluation terminal decrypts the encrypted bidding document according to the feature identifier and completes bid evaluation. The problems that the bidding evaluation terminal cannot read the bidding document and the bidding evaluation process is low in safety aresolved, and the online bidding and tendering method have the effects of reading the bidding document in time and being safe in bidding evaluation.
Owner:上海容基工程项目管理有限公司
A temperature-sensitive changeover switch
ActiveCN105679603BReduce volumeExact melting pointHeating/cooling contact switchesEngineeringOrganic matter
The invention aims to provide a temperature-sensing type change-over switch. The working principle of the temperature-sensing type change-over switch is opposite to that of a conventional organic matter type thermal fuse; when the circuit environment temperature is raised abnormally, the temperature-sensing type change-over switch performs actions to switch on the circuit; when the environment temperature is raised abnormally or a fire occurs, after the change-over switch is converted from a disconnected state into a switch-on state, the switch-on state of the change-over switch is not changed, so that the risk that an alarm or an indication is cancelled when fire is not extinguished actually can be avoided; the temperature-sensing type change-over switch is small in size which is only equivalent to the size of the conventional organic mater type thermal fuse; in addition, the temperature-sensing material adopts the organic matter type and has accurate fusing point, so that the circuit state can be switched in time when the environment temperature achieves the predetermined temperature rapidly.
Owner:XIAMEN SET ELECTRONICS
Large-section tunnel excavation method based on double-side-wall pilot tunnel method
PendingCN113417645ALarge construction spaceFacilitate mechanized constructionUnderground chambersDrainageArchitectural engineeringArch bridge
The invention relates to the field of tunnel construction, in particular to a large-section tunnel excavation method based on a double-side-wall pilot tunnel method. The large-section tunnel excavation method comprises the steps that step 1, construction preparation is conducted and is characterized by further comprising the following steps that step 2, an upper step of a pilot tunnel is constructed; step 3, an upper step of the following pilot tunnel is constructed; step 4, an upper step of the middle pilot tunnel is constructed; step 5, a lower step of the pilot tunnel is constructed; step 6, a lower step of the following pilot tunnel is constructed; step 7, a lower step of the middle pilot tunnel is constructed; step 8, monitoring and measuring are performed; step 9, dismantling is performed; step 10, sealing is performed; step 11, inverted arch construction is conducted; and step 12, arch bridge construction is conducted. The large-section tunnel excavation method is convenient to construct and high in efficiency.
Owner:SHANGHAI BAOYE GRP CORP
Remote control digital educational teaching device
InactiveCN107316512AEasy to assemble and disassembleSave energyElectrical appliancesTeaching programPrinted circuit board
The invention discloses a remote control digital education and teaching device, which comprises a base plate and a machine body installed on the base plate, a display screen is embedded on the surface of the machine body, a signal receiving device is arranged above the display screen, and a There is an information processor, an intelligent circuit board is arranged inside the body, and the intelligent circuit board is electrically connected to the display screen, the information processor is electrically connected to the intelligent circuit board, and an optical drive insertion port is opened on the side wall of the body. The device is inserted into different CD-ROM software through the CD-ROM drive slot, which can realize the timely conversion of different teaching programs. The remote control can be used to receive external signals through the signal receiving device, and the information processor can be used to feed back the signals to the display screen through the intelligent circuit board. The body is located In the installation groove on the surface of the bottom plate, it is easy to disassemble and assemble. During the lecture process of the lecturer, an external microphone can be connected to amplify the sound through the amplifying device, saving the lecturer's physical strength.
Owner:王英
Load detection chip for commodity safety
PendingCN112067973AReduce volumeEasy to detectCurrent/voltage measurementElectronic circuit testingHemt circuitsVoltage control
The invention provides a load detection chip for commodity safety. The chip comprises a voltage control module which is configured to provide a power supply voltage for a load, a voltage monitoring module configured to be capable of monitoring a voltage value on a load, and and output module. A load detection chip is configured to be capable of outputting a safety signal through the output modulewhen the voltage value exceeds a set threshold. The invention designs the load detection chip, which is a detection chip for commodity safety and has the advantages of small size, light weight, high detection effect, stable work, high reliability and high dynamic response, and the commodity safety state is confirmed by monitoring the voltage on the load, so that the supervision and protection of the commodity are ensured. And switching of corresponding detection circuits can be realized, so that application in different scenes can be realized, and the application range can be expanded.
Owner:HANGZHOU LANGHONG TECH
A method for detecting the conversion degree of oil-based drilling fluid
ActiveCN105372296BDetermine scienceAccurately determineMaterial analysis by electric/magnetic meansDrilling fluidEnvironmental geology
The invention discloses a detection method of a transition degree of oil-based drilling fluid. The detection method comprises: determining a parameter preparation value: measuring the parameter of the preset oil-based drilling fluid according to the prepared oil-based drilling fluid to obtain the parameter preparation value of the preset oil-based drilling fluid; determining a parameter test value: injecting the oil-based drilling fluid into a drilling fluid circulating system if the preparation value is more than a first preset parameter threshold value, testing the preset oil-based drilling fluid parameter of a returning fluid in the drilling fluid circulating system every other first preset time in the injection process to obtain the parameter test value of the preset oil-based drilling fluid; and determining the transition degree: comparing the test value with a second preset parameter threshold value, and determining the transition degree of the oil-based drilling fluid according to the comparison result. The detection method can accurately determine whether the drilling fluid circulating system completes the transition of the oil-based drilling fluid, and is convenient for on-site staff to operate.
Owner:CHINA PETROLEUM & CHEM CORP +1
washing machine door lock
ActiveCN103603170BSimple structureEasy to assembleOther washing machinesTextiles and paperEngineeringMechanical engineering
The invention discloses a washing machine door lock. The washing machine door lock comprises a lock case, a driving device, a locking part and a transmission device, wherein the lock case is provided with a bottom plate and a cover plate, the driving device is mounted in the lock case, the locking part is mounted in the lock case and capable of locking out of or retracting into the lock case, and the transmission device is arranged between the driving device and the locking part and converts rotary power of the driving device into force in the direction of driving the locking part to lock out and retract. Driven by the rotary power of the driving device, the transmission device linearly moves back and forth to drive the locking part to lock out or retract. In the washing machine door lock, the transmission device can directly convert the rotary movement of the driving device into self linear back-fourth movement to further drive the locking part to lock out or retract; the washing machine door lock is simple in structure, easy to assemble, few in arranged parts, high in transmission accuracy and capable of realizing timely locking out or retraction.
Owner:WENZHOU TIANJIAN ELECTRIC APPLIANCE
Conversion type jet ventilation catheter
InactiveCN111494770AGuaranteed unobstructedTimely conversionTracheal tubesMedical devicesNoseEngineering
The invention relates to a conversion type jet ventilation catheter, which comprises a ventilation main catheter, a carbon dioxide detection branch catheter, a cuff inflation branch catheter and a main catheter cuff, openings are formed in the inner walls of two sides close to the upper end opening of the ventilation main catheter; the carbon dioxide detection branch catheter and the cuff inflation branch catheter are arranged in the openings, a main catheter cuff is arranged on the ventilation main catheter and located on the lower half section of the ventilation main catheter, the radius ofthe main catheter cuff is larger than the inner diameter of the ventilation main catheter, and the lower end opening of the ventilation main catheter is arranged in an inclined opening shape. The invention has the advantages that: the conversion type jet ventilation catheter can assist mouth and nose ventilation and keep the respiratory tract unobstructed, can achieve operation of different branchcatheters at the same time without interference to one another, the mechanical pressure ventilation mode and the jet ventilation catheter can be converted timely so as to facilitate timely conversionof different ventilation modes, and favorable conditions are provided for taking out foreign matters in the airway.
Owner:EYE & ENT HOSPITAL SHANGHAI MEDICAL SCHOOL FUDAN UNIV
A large-scale karst cave treatment and tunnel excavation method with deep dredging and full filling
ActiveCN106246191BReduce stress unevennessEnsure safetyUnderground chambersTunnel liningKarstLarge deformation
A method for treating a large fully filled karst cave provided with a deep cave body and excavating a tunnel adopts a three-step seven-procedure method comprising steps of karst cave treatment, pre-grouting, excavation of an upper arc-shaped pilot tunnel, excavation of a middle step, excavation of a lower step and excavation of three steps in the middle. Construction space is large, mechanized construction is convenient, parallel operation on multiple working faces can be realized, and the working efficiency is high; construction procedures can be transformed flexibly and timely, and the construction method can be adjusted; the method is applicable to different spans and various section forms, and primary support procedures are convenient to operate; core soil is reserved on the basis of excavation with the step method, left and right staggered excavation is performed, and stability of excavation working faces is facilitated; when surrounding rock has larger deformation or abrupt change, the closure time can be adjusted as quickly as possible on the premise that safety is guaranteed and a clearance requirement is met, the method is widely applicable to karst cave stratums with special geological conditions, and construction and tunnel safety is guaranteed through rapid, safe and effective tunnel excavation construction under the geological conditions.
Owner:BEIJING MUNICIPAL ENG RES INST +1
A treatment method and treatment device for industrial waste gas containing nitrogen oxides
ActiveCN105664700BHigh decontamination rateStrong oxidation abilityDispersed particle separationElectrolysisNitrate
A method for treating industrial waste gas containing nitrogen oxide comprises the steps of: (1) conveying waste gas containing NOx to the bottom of a denitration tower (3), and conveying a permanganate denitration agent to the top of the denitration tower (3), the permanganate denitration agent converting NOx into nitrate, and residual liquid flowing to the bottom of the denitration tower (3); (2) conveying the residual liquid at the bottom of the denitration tower (3) to an electrolytic tank (1), and electrifying the electrolytic tank (1) to electrolyze manganate in residual liquid into permanganate, so as to form the permanganate denitration agent; and (3) conveying the electrolyzed permanganate denitration agent to the top of the denitration tower (3). By means of the method, permanganate can be circularly utilized, so that operation costs are reduced; in addition, the scaling is avoided, the denitration tower (3) is not blocked, and the environmental pollution is avoided. In addition, also disclosed is a device for treating industrial waste gas containing nitrogen oxide.
Owner:GUANGZHOU GREEN SPLENDID ENVIROMENT SCI & TECH CO LTD
Detection method of transition degree of oil-based drilling fluid
ActiveCN105372296ADetermine scienceAccurately determineMaterial analysis by electric/magnetic meansDrilling fluidEnvironmental geology
The invention discloses a detection method of a transition degree of oil-based drilling fluid. The detection method comprises: determining a parameter preparation value: measuring the parameter of the preset oil-based drilling fluid according to the prepared oil-based drilling fluid to obtain the parameter preparation value of the preset oil-based drilling fluid; determining a parameter test value: injecting the oil-based drilling fluid into a drilling fluid circulating system if the preparation value is more than a first preset parameter threshold value, testing the preset oil-based drilling fluid parameter of a returning fluid in the drilling fluid circulating system every other first preset time in the injection process to obtain the parameter test value of the preset oil-based drilling fluid; and determining the transition degree: comparing the test value with a second preset parameter threshold value, and determining the transition degree of the oil-based drilling fluid according to the comparison result. The detection method can accurately determine whether the drilling fluid circulating system completes the transition of the oil-based drilling fluid, and is convenient for on-site staff to operate.
Owner:CHINA PETROLEUM & CHEM CORP +1
A three-step construction technology based on a tunnel excavation and support integrated trolley
ActiveCN113530553BReduce pollutionReduce exposure timeUnderground chambersTunnel liningArchitectural engineeringRock bolt
The invention is a three-step construction technology based on a tunnel excavation and support integrated trolley, and provides a three-step reserved core soil construction technology for a tunnel, including the platform position, and the upper platform moves longitudinally forward to perform advanced support. . After the advance support is completed, the drilling operation on the upper step face is started and after the drilling is completed, the working attachment of the working arm on the upper bench is replaced with a planer and milling machine assembly for milling and excavation of the upper step, and cleaning after milling and excavation Muck, while cleaning the muck, replace the attachment of the working arm on the bench with the wet spraying machine assembly, and connect the wet spraying material supply system to carry out the initial spraying operation of the upper steps. This construction process consists of excavation. , The installation of arch frame, bolt and wet spraying support is integrated, and there is no need for multiple equipment to work alternately. At the same time, the operation method of milling and spraying is adopted, which reduces the disturbance of surrounding rock, realizes fast digging, fast support and parallel operation, and improves construction efficiency. .
Owner:HAN JIANG HEAVY IND CO LTD 11TH BUREAU GRP CRCC +1
A high-sensitivity, high-frequency response, and overload-resistant silicon carbide high-temperature vibration sensor
ActiveCN109764954BHigh sensitivityAnti-overloadSubsonic/sonic/ultrasonic wave measurementUsing electrical meansCarbide siliconHemt circuits
The invention discloses a high-sensitivity, high-frequency response, and overload-resistant silicon carbide high-temperature vibration sensor, which includes a silicon carbide chip, a silicon carbide bonding sheet, a thermal insulation layer, a packaging shell and a Kovar pin; the silicon carbide chip includes a supporting sheet, a cantilever beam and a mass block; the supporting sheet and the silicon carbide bonding sheet form a bonding body; the mass block and the cantilever beam are arranged in the cavity of the bonding body, and a chip circuit is arranged on the cantilever beam ; The Kovar pins extend into the bonding compound along the through holes arranged on the package shell, the heat insulating layer and the silicon carbide bonding sheet, and are connected with the chip circuit. The invention proposes that the high-temperature vibration sensor has the characteristics of high sensitivity, high-frequency response, and overload resistance, and can realize accurate and timely measurement of vibration signals in a high-temperature environment.
Owner:XI AN JIAOTONG UNIV
A device for protecting LED downlights by adjusting the light angle
ActiveCN111810875BSolve the discomfortTimely conversionProtective devices for lightingLighting safety devicesCircular discEngineering
The invention relates to the technical field of LED lamps, and discloses a device for protecting LED downlights by adjusting the light angle force. The equipment for protecting LED downlights by adjusting the angle of illumination drives the main shaft through the core components, and the screw rod outside the lower end of the main shaft runs. The core components mesh with the disc at the left end, so the disc runs accordingly, and the disc shaft There is a round rod fitting at the center, and the round rod fitting is plugged into the disc to be movably connected to a metal turntable. The metal turntable is provided with teeth matching the disc. The teeth on the metal turntable interact with the disc to produce The driving force, through the combined use of the metal turntable and the disc, makes the disc rotate at a constant speed on the inner groove of the metal turntable, so that the lamp body fixedly connected above the metal turntable has the function of automatically adjusting the illumination angle, and then solves the problem of further improvement. The moment the light is turned on at the door of the house, it causes eye discomfort.
Owner:海宁海之利照明有限公司
A large-scale karst cave treatment and excavation method across the tunnel body
ActiveCN106194196BReduced settlement convergenceReduce stress unevennessUnderground chambersDrainageCaveStep method
Owner:BEIJING MUNICIPAL ROAD & BRIDGE
A long-standby power supply and SOC measurement integrated control method for a megawatt-level flow battery
ActiveCN109004706BImprove work efficiencySolve the problem of long-term standbyRegenerative fuel cellsFuel cell controlElectrical batteryStandby power
The invention relates to the technical field of energy storage batteries, in particular to an integrated control method for long-standby power supply and SOC measurement of a megawatt-level liquid flow battery. The megawatt-level all-vanadium redox flow battery system mainly includes: all-vanadium redox flow battery unit; auxiliary battery unit; time-sharing control unit; SOC measurement unit; power supply unit, black start unit, etc. The all-vanadium redox flow battery unit mainly includes: main stack, positive electrolyte tank, negative electrolyte tank, main pump drive module A, main pump drive module B, main positive circulation pump, main negative circulation pump, megawatt DC- DC module, DC‑DC module A, etc.; the auxiliary battery unit mainly includes: auxiliary battery, auxiliary positive circulation pump, auxiliary negative circulation pump, auxiliary pump drive module A, auxiliary pump drive module B; the advantage of this method is that it solves the problem of megawatt The problem of long-term standby of the high-level flow battery energy storage system; and the flow battery energy storage system can be switched from the standby state to the normal working state in time, which improves the working efficiency of the flow battery energy storage system.
Owner:HEFEI UNIV OF TECH
Temperature-sensing type change-over switch
ActiveCN105679603AReduce volumeExact melting pointHeating/cooling contact switchesEngineeringOrganic matter
The invention aims to provide a temperature-sensing type change-over switch. The working principle of the temperature-sensing type change-over switch is opposite to that of a conventional organic matter type thermal fuse; when the circuit environment temperature is raised abnormally, the temperature-sensing type change-over switch performs actions to switch on the circuit; when the environment temperature is raised abnormally or a fire occurs, after the change-over switch is converted from a disconnected state into a switch-on state, the switch-on state of the change-over switch is not changed, so that the risk that an alarm or an indication is cancelled when fire is not extinguished actually can be avoided; the temperature-sensing type change-over switch is small in size which is only equivalent to the size of the conventional organic mater type thermal fuse; in addition, the temperature-sensing material adopts the organic matter type and has accurate fusing point, so that the circuit state can be switched in time when the environment temperature achieves the predetermined temperature rapidly.
Owner:XIAMEN SET ELECTRONICS
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