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125results about How to "Save maintenance costs" patented technology

Construction equipment Internet of Things system and method based on blockchain technology

The invention discloses a construction equipment Internet of Things system and method based on the blockchain technology. The system comprises a plurality of Internet of Things nodes, a plurality of blockchain nodes, a plurality of intelligent terminals and a plurality of user terminals, the detection of various environmental information in the building and the monitoring of electrical equipment can be achieved, data are stored in the blockchain nodes in a distributed manner, a data transmission process is encrypted by using the asymmetric encryption technology, and data sharing is performed through a smart contract. According to the construction equipment Internet of Things system and method disclosed by the invention, the blockchain technology is combined with the Internet of Things technology, the consensus mechanism, distributed storage, asymmetric encryption and smart contract of the blockchain technology are applied to the Internet of Things, and many problems faced by the current Internet of Things are solved.
Owner:SHANDONG JIANZHU UNIV

Method for determining realtime Ethernet tlecommunication

The method comprises: newly adding a communication scheduling layer into original data link layer of Ethernet; in relation to the standard channel using TCP / IP, newly adding a real time channel; according to the greatest common divisor of control cycle in the actual control area, using a three segmentation dividing principal to divide macro cycle into three time segmentations on time axis; the bus arbitration uses a approach of combining the distribution with the concentration, and uses a time slot distribution based scheduling approach to send the cyclic data relating to the realization of control function in the time segmentation, uses the centralized scheduling approach with priority controlling function to send the system data and non cyclic data in the time segmentation; all slave devices in the system keep the time consistence with the master device by using a clock synchronous algorithm; the logic addressing is made based on the device ID; realizing the real time Ethernet determinacy communication.
Owner:MICROCYBER CORP

Solar energy sea water desalinization device based on reflection and total reflection

The invention discloses a solar energy sea water desalinization device based on reflection and total reflection, and belongs to the technical field of solar energy heat collection and water treatment. The device is composed of an upper surface transparent film, a total reflection solid film with a gradually-varied wall thickness and hydrophilic capillary tubes; the plurality of devices can be arranged and combined to form multiple solar energy sea water desalinization films; the combined devices are floated on the sea surface for use. According to the invention, a capillary phenomenon is utilized to enable sea water to go up to the upper ends of the capillary tubes, sunlight enters through the upper surface layer transparent film, and is subjected to reflection or total reflection when being in contact with an inner surface, and finally the sunlight is gathered on the black hydrophilic fiber capillary tubes to generate heat energy to realize sea water evaporation. The convection and heat exchange of the raised water vapor and external air is realized through the upper surface layer transparent film, the water vapor is condensed to generate fresh water on the inner side of the transparent film, the fresh water slips through the inner wall of a reflecting surface, and flows into the lower part of a housing through water outlet holes in the wall of a supporting cylinder to be stored. The fresh water is conveyed to users after accumulation, and meanwhile, small-sized plant can be planted at sea.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Three-dimensional vision accurate guiding and positioning method for automobile intelligent manufacturing automatic feeding

The invention discloses a three-dimensional vision accurate guiding and positioning method for automobile intelligent manufacturing automatic feeding. A camera is used for conducting photographing and image collecting on a component, and the position and the angle deviation of the component under a fixed coordinate system are calculated through image processing and in combination with the vision detection algorithm; and a robot is used for transmitting the position and angle information, the track of the robot is corrected, the robot is guided to arrive at the correct work position, and accordingly the robot automatically corrects the track for workpiece grabbing and feeding. According to the three-dimensional vision accurate guiding and positioning method, the component grabbing precision is high, the precision can reach + / -0.5 mm, accurate positioning on a material box is not needed, and the cost and maintaining expense for accurately positioning the material box are omitted; and the later maintaining and adjusting technology is facilitated.
Owner:ISVISION (TIANJIN) TECH CO LTD

Extraction method for a segment of butadiene with NMP method

The invention discloses a NMP butadiene sectional extraction method with a forward hydrogenation technology. The invention solves the problems existed in the prior NMP butadiene sectional extraction method that the tower top of a leaching and rectifying tower has large load, needs a circulated pressure compressor and has high requirement on the grade of refrigerant. The invention provides a butadiene section extraction method of leading a slight tower and canceling the circulated pressure compressor in the sectional extraction technology, and the invention comprises the steps of hydrogenation,releasing the slight components, leaching and rectifying, adsorption stripping, refining and so on. The invention is characterized in that the forward hydrogenation technology is adopted so that theacetylene hydrocarbon is released before leaching and rectifying, thereby increasing the operational safety, and the slight components are released in advance before leaching and refining so that thematerial positioned on the tower top of the adsorption stripping tower can be condensed to liquid phase, thereby being able to be transported to a refining tower through a pump; the invention cancelsthe compressor, thereby saving the device investment, decreasing the energy consumption, simplifying the operation, and being high in safety. Besides, with strong adaptive capacity on raw material, the operation of the device is not influenced by the regeneration period of catalyst.
Owner:CHINA PETROLEUM & CHEM CORP +1

Operation optimum management control system and method of thermal generator set

The invention relates to an operation optimum management control system and a method of a thermal generator set. The control system comprises a data collection module, a data effectiveness checking module, a data storage module, a fault analysis module and a warning and display module, wherein the data effectiveness checking module is connected with the data collection module and is used for carrying out the effectiveness checking on original values of real-time operation work condition information of the thermal generator set in the power generation site collected by the data collection module, thus obtaining the effective value of the real-time operation work condition information, the data storage module is connected with the data effectiveness checking module, and is used for storing the effective value of the real-time operation work condition information of the thermal generator set in the power generation site, the fault analysis module is connected with the data storage module, and the warning and display module is connected with the data storage module and the fault analysis module. The invention has the advantages that the thermal generator set in the power generation site can be effectively monitored and managed in a remote way, the labor cost can be reduced, the times for in-site maintenance can be reduced, or the in-site maintenance can be avoided, the maintenance cost and the fault processing time can be saved, and in addition, the safety and the reliability are high.
Owner:CHINA SHENHUA ENERGY CO LTD +2

Apparatus for assisting in lane change and operating method thereof

Disclosed are an apparatus for assisting in a lane change and an operating method thereof. The apparatus includes a driving information collecting unit, an image generating unit, a line detecting unit, a lane change determination unit, and a danger determining unit. The apparatus calculates a danger of an accident based on an image photographed by a camera and notifies a driver of the danger of the accident in advance when two or more vehicles, which are travelling with one lane interposed therebetween, simultaneously change lanes toward the same lane, thereby enabling a driver of a vehicle to be safe according to a lane change before the driver actually changes the lane.
Owner:HYUNDAI MOBIS CO LTD

A protection device for the optical fiber line in the passive optical network and its method

The invention provides a device and method that realizes the protection of fiber line in PON. It adopt two light modules to correspond two skeleton fiber lines in local end OLT, the receiving and sending of two light signals can be started and closed by controlling. When system is working in skeleton fiber protection rearranging mode, only one module of the two sends down light signal, only one of two upper light signals can be selected to pass; when system is working in full fiber protection rearranging mode, two light modules can send down light signal at the same time, and the upper light signals can be selected to pass. Based on the invention, long time interruption can not be happened, maintainer can appoint engineer repair the faulted light line without interrupting the operation.
Owner:FENGHUO COMM SCI & TECH CO LTD

High-availability industrial Ethernet redundancy method

The invention relates to a high-availability industrial Ethernet redundancy method, which comprises the following steps: adding a link redundancy entity on an original data link layer of the Ethernet for managing the sending and receiving of data frames of the Ethernet; setting two network adapter drivers relative to an original protocol stack for managing two network adapter interfaces; connecting a double-connected node which comprises the link redundancy entity and the two network adapter drivers to two independent networks respectively through two network adapters; adding a redundancy control tracker for the data frames on the link redundancy entity for distinguishing the data frames with the same content; sending the data frames which have the same content and is provided with the redundancy control tracker to two mutually-independent networks by the double-connected node through the two network adapters; keeping effective frames and discarding copy frames; and setting up a node table. The method has the characteristics of transparency, self-healing property and compatibility and the like; and the reconstruction thereof is simple, and the safety performance of the system is increased so as to enable the system to have high usability.
Owner:MICROCYBER CORP

Composite ecological wood

InactiveCN101531791AAddress perishableSolve expansion deformationFoaming agentWeather resistance
The invention provides composite ecological wood. The wood comprises the following compositions in percentage by weight: 35 to 40 percent of wood meal, 40 to 49 percent of PVC, 2 to 3 percent of calcium carbonate, 4 to 6 percent of a foaming regulator, 4 to 6 percent of a stabilizing agent, 4 to 6 percent of impact-resistant ACR, 0.5 to 1.5 percent of a processing additive ACR, 0.2 to 0.4 percent of toner, an internal lubricant and an external lubricant, a foaming agent accounting for 0.1 to 1 percent of the PVC and a coupling agent accounting for 3 to 5 percent of the wood meal; and when a product is used outdoors, the product also comprises an antioxidant, an ultraviolet absorbent and a light stabilizing agent which have 0.1 to 0.5 percent of weight portions respectively. Compared with the prior art, the composite ecological wood thoroughly overcomes the disadvantages of raw wood, improves the shortage of the raw wood and keeps the particular wooden texture of the raw wood; simultaneously, for the addition of the antioxidant, the ultraviolet absorbent and the light stabilizing agent, the composite ecological wood also prevents photooxidation, fading, cracking and the like caused by ultraviolet irradiation, increases the weather resistance and prolongs the service life.
Owner:孙玉武

Indoor test estimation method for estimating bituminous pavement rut

The invention discloses an indoor test estimation method for estimating a bituminous pavement rut. In the method, an indoor test method, a numerical analysis method and weather and traffic survey data are fully utilized, four factors, namely material parameters, deformation rules of materials, temperature conditions and traffic conditions, determining a development rule of the bituminous pavement rut are organically combined, and the depth of the bituminous pavement rut is accurately estimated. By taking Fenguan Highway in Jiangsu province as an example, the specific implementation mode is illustrated. The invention expands the conventional bituminous pavement rut estimation method, can provide scientific decision for pavement management and maintenance department, and has realistic significance of reducing the pavement test cost and maintenance cost.
Owner:NANTONG ZHONGRUN CONCRETE +1

Composite material lattice sandwich tube restriction concrete foot stall with buffering energy-absorbing function

The invention relates to a concrete pier stud confined by a composite structure sandwich pipe which has the buffer energy-absorption effect. The concrete pier stud is characterized by consisting of a pier stud jacket (7) and an internal concrete core (5) which is casted in the pier stud jacket (7); a reinforcing steel bar (4) which is arranged along the axial direction of the pier stud jacket (7) and takes effect of increasing tensile strength is pre-embedded in the internal concrete core (5); and the pier stud jacket (7) consists of an external composite pipe (1), an internal composite pipe (3), a lattice (6) connecting the external composite pipe (1) and the internal composite pipe (3) and buffer material (2) which is filled in a space surrounded by the external composite pipe (1), the internal composite pipe (3) and the lattice (6). The invention uses a composite lattice sandwich layer to enwrap the outside of the concrete pier stud, the buffer material in the sandwich layer transforms and releases impact energy by the energy for the structure or the material to recover the elastic deformation by self and can prolong the impact time, thereby reducing the impact force and achieving the effect of protecting the vehicle, the ship and the bridge, and at the same time, the concrete pier stud can increase the strength and the corrosion resistance and reduce the construction cost.
Owner:SHANGHAI BOHONG ENERGY-SAVING TECH CO LTD

Method and device for continuously preparing vanadium-nitrogen alloy

The invention discloses a method for continuously preparing vanadium-nitrogen alloy. The method includes the first step of preparation, the second step of blending and blank manufacturing, the third step of adding, the fourth step of preheating and prereduction, the fifth step of carbonization and nitridation sintering, and the sixth step of discharging. A device for preparing vanadium-nitrogen alloy according to the method comprises a vertical boiler, a top feeding bin (1) and a continuous automatic discharging device (2), wherein the vertical boiler is composed of a preheating section (4), a calcination section (4) and a cooling section (5); the lower end of the vertical boiler is connected with the continuous automatic discharging device (2) through a pipeline; the tail end of the continuous automatic discharging device is connected with a finished product trolley (20) through a discharge pipe (18); the bottom of the vertical boiler is provided with a nitrogen inlet (21). The method has the advantages that the process and the device are compact, the production process is short, electric energy is saved, little investment is required, yield is high, continuous production is really achieved, and the industrialized and scale production requirement is met.
Owner:SICHUAN ZHANXIANG SPECIAL ALLOY TECH

Multi-strategy fault diagnosis system for carrier rocket test launching process

The invention provides a multi-strategy fault diagnosis system for the carrier rocket test launching process. The multi-strategy fault diagnosis system comprises a data reception and processing module, a fault detection module, a fault locating module, a rule algorithm plug-in, a fault tree algorithm plug-in, a mathematic model algorithm plug-in and a fault criteria storage module. A general carrier rocket fault diagnosis and reasoning framework is established to enable object information and diagnosis strategy to be separated, thereby realizing universal service between data acquisition, data processing and fault diagnosis, providing general basis for concrete applications of different diagnosis and reasoning methods and improving system diagnosis capability.
Owner:BEIJING INST OF ASTRONAUTICAL SYST ENG +1

Sump well for vacuum drainage system

The invention relates to a sump well for a vacuum drainage system. The sump well comprises a collection well, a sewage pumping pipe, a drainage pipe, a vacuum valve, a controller for controlling connection and disconnection of the vacuum valve and a water level sensor for collecting water level information, wherein the outlet of the drainage pipe is connected into a vacuum pipeline, and the inletof the drainage pipe is connected with the outlet of the sewage pumping pipe through the vacuum valve; the inlet of the sewage pumping pipe extends into a sewage pumping level in the collection well;and a signal output end of the water level sensor is connected with a signal input end of the controller. Along with sewage collection in the well, the sump well drains automatically and intermittently to the vacuum drainage system, has a simple structure, and does not require a lift pump, so that the problems of being low in safety, easy in blockage, difficult in cleaning, high in power consumption and the like caused by assembling the lift pumps on multiple points can be avoided, and sewage collected by gravity flow can be lifted to the vacuum drainage system without extra additional power,and the sump well is convenient to check and maintain.
Owner:ENVIROSYST BEIJING ENVIRONMENTAL ENG & TECH CO LTD

Multifunctional adjustable monkey chair

The invention discloses a multifunctional adjustable monkey chair, comprising a chair space surrounded by a lateral plate, a front plate and a back plate and allowing an experimental animal entering inside, and an upper plate and a head fixing plate installed above the chair space, wherein a plurality of fixing grooves are installed on the inner side of the lateral plate, and a groove is opened on the inner side of the fixing groove for installing matched plug-in units; and a rotary fixed element is installed on the outer side of the lateral plate and connected with a positioning rack for adjusting the position of the positioning rack. The monkey chair can be adjusted according to experimental conditions; and is suitable for scientific experiments on primates with different ages and shapes. The inventive monkey chair has the advantages of good commonality and convenient installation.
Owner:INSITUTE OF BIOPHYSICS CHINESE ACADEMY OF SCIENCES +1

Special type composite low alumina mullite brick and preparation method thereof

The invention discloses a special type composite low alumina mullite brick which is prepared by raw materials by weight percent: 10-30% of mullite with granularity of 3-1mm, 20-40% of flint clay with granularity of 3-1mm, 10-20% of flint clay with granularity of 1-0mm, 5-15% of flint clay with granularity of -200 meshes, 10-30% of sillimanite or andalusite, and 15-25% of additive. The materials weighed according to the mixture ratio are mixed and ground, processed by ageing, extruded to be molded, dried and finally sintered, so that the special type composite low alumina mullite brick can be obtained. The special type composite low alumina mullite brick has the advantages of low apparent porosity and impurity, high strength and refractoriness under load, micro-expanded product, high mullite phase and the like, and has the function of one brick for multiple purposes. The application of the special type composite low alumina mullite brick can save a great deal of maintenance costs and energy conservation cost for steel users, thus having remarkable social and economic benefits.
Owner:GONGYI WINNA SCI & TECH DEV

Bituminous pavement top-crack or settlement treating method

The invention discloses processing technique dealing with asphalt pavement sink and crack, which includes following steps: drill pouring holes at cracking area piercing face and ground; pouring material into the holes and fix the ground, sealing the holes; make slots along surface gaps, fill the slots till the sinking area is flush with the ground, block the section till pulp material coagulates till the normal service will not damage the pouring pulp again. By pouring pulp material into pouring holes at sinking area, the rigidity of ground base and surface is enhanced effectively so to keep the ground from further damage, lengthening the road service life greatly.
Owner:邓敬森

Denitrification/dephosphorization bioreactor and sewage treatment method with same

The invention relates to sewage treatment, particularly a denitrification / dephosphorization bioreactor and a sewage treatment method with the same. The invention aims to provide a denitrification / dephosphorization bioreactor which has the advantages of low cost, low energy consumption, simple structure and good treatment effect. The denitrification / dephosphorization bioreactor comprises a water inlet pipe, an anaerobic zone, an anoxic zone, an aerobic zone, a settling zone and a water outlet pipe in the water body flow direction, wherein the anaerobic zone, anoxic zone, aerobic zone and settling zone are separated by zone walls; and each zone wall is provided with water through holes. The invention also aims to provide a sewage treatment method with the denitrification / dephosphorization bioreactor. By adopting the sludge self-reflux and air stripping hydraulic circulation mode, the invention saves the high-flow circulating pumps, thereby saving the investment cost as well as maintenance cost and power cost. Thus, the invention provides an ideal device for municipal domestic sewage treatment.
Owner:深圳中水环境保护有限公司

Technique for producing aluminum fluoride by dry method

The invention relates to a production process of dry method aluminum fluoride, which comprises the steps like preparation of HF gas, and the preparation of aluminum fluoride by means of HF and aluminum hydroxide; wherein, the preparation method for HF gas comprises the following step: concentrated sulphuric acid and nicotinic acid are added into a fuming acid reaction kettle and mixed, and the mixed acid obtained from the mixing adequately reacts with fluorite directly in a reaction furnace, so as to acquire HF gas. By obviating the steps of sulphuric acid preheating and pre-reactor reaction, the production process of dry method aluminum fluoride has the advantages of preventing a variety of problems due to the improper control of the reaction parameters in the pre-reactor, improving the running rate of equipment, saving the equipment maintenance costs and investments, lowering the labor intensity for workers, as well as bettering the production capacity of the overall process to approximately 25 thousand tons due to the absence of restriction of the two steps obviated.
Owner:河南未来铝业(集团)有限公司

Chilling ring of gasification furnace

The invention discloses a chilling ring of a gasification furnace. The chilling ring comprises an outer lip ring, an inner lip ring, a nozzle ring, an inner ring of a water cavity, an outer ring of the water cavity, a bottom plate of the water cavity, a chilling water conveying pipe and a descending pipe, wherein the parts are connected by welding; the outer lip ring and the inner lip ring form a chilling water distribution chamber, the nozzle ring, the inner ring of the water cavity, the outer ring of the water cavity and the bottom plate of the water cavity form the water cavity, and the chilling water conveying pipe is communicated with the water cavity and the chilling water distribution chamber; a chilling water circular gap is formed between the outer lip ring and the descending pipe; preferably, the circular outer lip ring is a three-piece type, and is thickened in a jet direction of the nozzle ring. According to the chilling ring of the gasification furnace provided by the invention, the outer lip ring is in the three-piece type which replaces an integral circular structure, and the inner lip ring, the nozzle ring, the outer ring of the water cavity and the inner ring of the water cavity are changed to independent pieces; parts of assemblies can be directly changed in the furnace in the using process, vulnerable assemblies can be independently changed, and assemblies which are not easy to wear can be repeatedly used, so that the chilling ring is long in service life and convenient and economical to maintain.
Owner:NANJING CHENGZHI CLEAN ENERGY CO LTD

External type full-automatic biochemical analysizer for response disk signal sampling apparatus

The invention provides an external biochemical analyzer for a reaction disc signal sampling device, belonging to a medical apparatus; the invention comprises a reaction disc part arranged in a machine shell of the biochemical analyzer; the invention is characterized in that the reaction disc part comprises a bottom plate of the reaction disc(1), a reaction disc(2), a driving motor(3), a synchronous belt(4), a synchronous belt wheel(5), a shaft of the reaction disc(6), an insulation box of the reaction disc(7) and a reaction cup frame(8), wherein the reaction cup frame(8) is provided with a ring-shaped reaction cup groove(11), the outer side of which is provided with a light source entrance(12); eight optical fibers(17) matched with eight color filters have ends arranged in optical fiber mounting holes(13) and other ends penetrating the insulation box of the reaction disc(7) and fixed in eight corresponding optical fiber positioning sleeves(16) arranged on a signal plate fixing frame(15); the signal plate fixing frame(15) is fixed on the bottom plate of the reaction disc(1) and positioned on the outer side of the insulation box of the reaction disc(7). The external biochemical analyzer has the advantages of good pollution preventive effect and simple structure.
Owner:南京特康生化分析仪器有限公司

Ship docking device

The invention relates to the field of wharf docking devices, in particular to a ship docking device. The ship docking device comprises ship docking posts located on water of a wharf, rubber fenders and floating bodies floating on water close to the sides of the ship posts. The floating bodies can be connected with the ship docking posts in a vertically sliding mode, the rubber fenders are fixedly connected with the floating bodies, and the top faces of the rubber fenders are kept higher than the water level under the action of buoyancy of the floating bodies. Through buoyancy provided by floating boxes, the rubber fenders float at the position preset height above the water level through the floating boxes along with the change of the water level, the requirement of ships for docking under different water level conditions can be met through one set of rubber fenders, and engineering manufacturing cost and maintenance cost are reduced.
Owner:JSTI GRP CO LTD

Ship-borne electronic equipment test diagnosis equipment

The invention discloses ship-borne electronic equipment test diagnosis equipment. The equipment mainly comprises a master control computer, a PXI test extension set, a frequency spectrum test extension set, a power test extension set, an impedance test extension set, a sonar simulation signal source, a radar simulation signal source and a swing signal source. In the invention, external testing is performed on ship-borne electronic equipment so that utilization rate of an on-site grade test resource is increased and maintenance guarantee cost of the equipment is effectively saved.
Owner:CSSC SYST ENG RES INST +1

Bluetooth intelligent lamp precise positioning method and system

InactiveCN106604393AExtensive shopping mallsWide distribution of squaresNear-field transmissionWireless communicationBluetoothPositioning system
The invention discloses a Bluetooth intelligent lamp precise positioning method and system, relating to the technical field of Bluetooth. The technical problems of space occupation and cost increase in independently deploying a Bluetooth Beacon positioning device in the prior art are solved. The method comprises the steps that: a Bluetooth protocol is written into a Bluetooth chip of a Bluetooth intelligent lamp; the Bluetooth intelligent lamp sends a message comprising positioning content outward according to the Bluetooth protocol, and a positioning information transmitting station is formed; an intelligent mobile terminal receives the message comprising the positioning content published by Bluetooth intelligent lamp and determines and displays the accurate position of the intelligent mobile terminal. The Bluetooth intelligent lamp precise positioning system comprises a writing module, the Bluetooth intelligent lamp and the intelligent mobile terminal, the writing module is used for writing the Bluetooth protocol into the Bluetooth chip of the Bluetooth intelligent lamp. The method and the system are used for the precise positioning of the intelligent mobile terminal by using the Bluetooth intelligent lamp.
Owner:QINGDAO YEELINK INFORMATION TECH

Measuring device and method for rotor axial force of double-screw compressor

ActiveCN108534940AStable and real-time measurementStable and real-time monitoringApparatus for force/torque/work measurementGas compressorThrust bearing
The invention discloses a measuring device and method for rotor axial force of a double-screw compressor. The measuring device mainly comprises two groups of stress sensors arranged on two sides of athrust bearing at an exhaust end of the double-screw compressor, each group of stress sensor assembly comprises three standard stress sensors, stress is uniform, stable measurement and real-time monitoring can be realized, and the three standard stress sensors are fixed on a corresponding bracket and are mounted and positioned by through holes. The measuring device adopts two-way force measurementdesign, can accurately measure the direction and magnitude of axial force without interference to operation of a rotor.
Owner:XI AN JIAOTONG UNIV

Explosion-proof solar LED apparatus lamp

The invention relates to an explosion-proof solar energy LED equipment lamp which belongs to a novel explosion-proof lighting product which is safe and environment-friendly, and can increase income and decrease expenditure, mainly solves the problem of energy conservation of petroleum petrochemical illumination and comprises a solar module, a storage battery, a safety fence, a controller and an LED lamp; as the solar module adopts an intrinsic safety design, a circuit board is arranged in an explosion-proof box, the circuit board, the explosion-proof box and the intrinsic safety type or safety-increased storage battery are arranged in a control box, a 220VAC emergency power supply can be switched in, the lamp part is in the intrinsic safety type, the exteriors of all the parts are connected by cable, therefore, the equipment lamp explosion-proof technology not only causes the safe and reliable application of solar energy in the petroleum chemical industry to be possible, but also can fully utilize the renewable energy source to realize illumination and energy conservation; the LED with high quality has little attenuation and long service life, the direct-current constant flow actuation in the lamp leads the LED to maintain constant brightness; a singlechip and a special computer chip are used, thus having the function of emergency lamp; the lamp is dual-purpose, independent and safe, can form a system independently, and can operate independently and normally under unmanned operation, thus being convenient for use; and the equipment lamp can be widely applied in the petroleum chemical industry and other flammable and explosive hazardous fields.
Owner:北京瑞阳安科技术有限公司

Apparatus and method for analyzing dynamic torsional stiffness of harmonic reducer

The invention discloses an apparatus and method for analyzing dynamic torsional stiffness of a harmonic reducer. The apparatus comprises an AC servo motor with a coding disc. An output shaft of the AC servo motor is connected with an input shaft of a harmonic gear reducer through a coupling. An output shaft of the harmonic gear reducer is connected with one end of a torsion sensor, and the other end of the torsion sensor is separately connected with a torsion spring and a rotary coding disc. The apparatus further includes an AC motor servo amplifier, a signal generator, an A / D conversion data acquisition card, a computer and a code disc counting solution card. The output torsional stiffness of the harmonic gear reducer can be solved by measuring angular displacement signals at input and output ends of the harmonic gear reducer and a load torque signal at the output end and by running a corresponding algorithm.
Owner:SOUTH CHINA UNIV OF TECH

Intensive undersea optical cable applicable to remote intelligent monitoring system

An intensive undersea optical cable applicable to a remote intelligent monitoring system provided by the invention relates to an optical cable used in the undersea environment, pertaining to a field of monitoring and control technology. The intensive undersea optical cable combines application of an undersea high-low voltage power cable, an undersea communication cable and a remote intelligent monitoring system fiber sensing cable, and comprises undersea power transmission insulated cables, undersea communication cables and multi-layer metal protection sensing optic cables. A center gap and an external gap are formed after stranding of a plurality of the undersea power transmission insulated cables. The center gap has internal structure filling. The external gap is provided with the undersea communication cables and the multi-layer metal protection sensing optic cables. The external gap is further provided with cable core external structure filling. The common part is provided with an inner cladding layer. An inner buffer layer is provided outside the inner cladding layer. Outside the inner buffer layer are provided an anticorrosive metal singlet armored layer and an asphalt waterproof anti-corrosion layer. Outside the anticorrosive metal singlet armored layer is provided an external wrapping layer.
Owner:ZHONGTIAN TECH SUBMARINE CABLE CO LTD

Anti-rut pavement paving method capable of continuously paving base layer and surface layer

PendingCN111549608ASolve temperature problemsSolving Difficult to Compact ProblemsIn situ pavingsRoad engineeringStructural engineering
The invention discloses an anti-rut pavement paving method capable of continuously paving a base layer and a surface layer, and belongs to the field of road engineering. The method is characterized inthat a super-early-strength anti-cracking cement stabilized macadam base layer is paved firstly, and after the base layer is rolled, a cold-mixed cold-paved rigid-flexible composite surface layer ispaved under the condition that the surface is still in a wet state. Compared with the prior art, according to the anti-rut pavement paving method capable of continuously paving the base layer and thesurface layer, continuous paving of the cement stabilized macadam base layer and the surface layer can be realized; maintenance time for 7 days of the cement stabilized macadam base layer can be omitted, meanwhile, the continuity of the base layer and the surface layer is improved, the overall cooperative stress of the pavement structure is guaranteed, a permeable layer and a macadam sealing layerdo not need to be sprayed on the surface of the cement stabilized macadam base layer, and the construction cost is reduced. Meanwhile, the cold-mixed and cold-paved rigid-flexible composite surface layer does not need centralized hot mixing, so that construction is convenient, resources are saved, and the environment is protected. The anti-rutt pavement structure with the base layer and the surface layer capable of being continuously paved has high high-temperature anti-rutting performance, anti-cracking performance, water stability and durability, and has high popularization and applicationvalues.
Owner:SHANDONG TRANSPORTATION INST +2
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