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71results about How to "Improve safety benefits" patented technology

Train satellite positioning method and train satellite positioning system based on collaborative integrity monitoring

The invention discloses a train satellite positioning method and a train satellite positioning system based on collaborative integrity monitoring. The method comprises the steps of acquiring offline basic data, predicting feature point positioning error offline protection limits distributed in a time-space range to be positioned to form a time-space distribution feature library, extracting observation information of a navigation satellite to a target train in real time and calculating the target train positioning error online protection limit in real time according to the observation information, calculating the feature point positioning error offline protection limit corresponding to the running time and mileage value of the target train positioning error online protection limit in the time-space distribution feature library, respectively comparing the target train positioning error online protection limit and the feature point positioning error offline protection limit corresponding to the running time and mileage value of the target train positioning error online protection limit with an alarm threshold, and adjusting the target train positioning decision scheme in real time according to the result of comparison. By adopting the technical scheme of the invention, the function of train positioning integrity monitoring can be improved effectively.
Owner:BEIJING JIAOTONG UNIV

Lifting double-locking hook rotation type mounting mechanism for electromechanical equipment in substation

The invention discloses a lifting double-locking hook rotation type mounting mechanism for electromechanical equipment in a substation. The mounting mechanism comprises a stud base joint and a telescopic joint, which can rotate around a rotating column of a base of the mechanism, wherein a fixed arm is hung and connected at the upper part of the telescopic joint, a telescopic arm which can be locked is arranged in the fixed arm, and a hook for lifting the equipment is arranged at the front end of the telescopic arm through a pulley block and a sling; a counterweight trolley is arranged at the lower part of the stud base joint, the counterweight trolley can rotate along with the stud base joint and the telescopic joint around an annular track of the base of the mechanism and realize 360-degree revolution, thereby being applicable to a wide range of work surfaces and being flexible and easy in rotation; the telescopic joint has a self-locking function in the stud base joint, thereby ensuring that the telescopic joint can not fall down naturally; and a lifting mechanism of the telescopic joint has the functions of locking and braking, can be stayed at any height, changes the operation form of manually mounting the equipment in a power transmission region in the past and eliminates the potential safety problems in the mounting operation process, thereby not only improving economic benefits, but also upgrading safety benefits.
Owner:STATE GRID CORP OF CHINA +1

Coal underground gasifier air pouring and discharging drilling channel heat insulating hermetic stemming method

The invention discloses a coal underground gasifier air pouring and discharging drilling channel heat insulating hermetic stemming method. The coal underground gasifier air pouring and discharging drilling channel heat insulating hermetic stemming method includes the following steps that a [phi] I section and a [phi] II section of a hermetic drilling channel is constituted on one side, close to abottom plate rock lane, of an in situ gasification reacting furnace air pouring and discharging drilling channel in a segmented and bearizing mode, a [phi] I section drilling channel separation casingis installed, and the interval between a [phi] I section drilling channel wall and a separation casing I external wall is filled with high intensity and high temperature resistant materials for the first time; a [phi] II section drilling channel separation casing is installed, the interval between a [phi] II section drilling channel wall and a separation casing II external wall is filled with thehigh intensity and high temperature resistant materials for the second time, and solid bodies are arranged to block off building blocks; the front and tail end positions of the bottoms of the separation casing I and the separation casing II are correspondingly provided with temperature thermocouples, and leads of the temperature thermocouples are led to a temperature monitoring system in the bottom plate rock lane; and filling for the third time, an end blocking plate of the [phi] II section drilling channel separation casing II is installed and filled, the [phi] I section drilling channel and the inner part of the separation casing I and the separation casing II of the [phi] II section drilling channel are filled through a filling opening, and high temperature resistance cement is filleduntil filling compaction. The coal underground gasifier air pouring and discharging drilling channel heat insulating hermetic stemming method has the beneficial effects that good heat-insulation is conducted on parts of air pouring and discharging pipelines of a lane, and leakages of high temperature gases are prevented.
Owner:SHANDONG UNIV OF SCI & TECH

A D2D content secure distribution method and system based on a Stackelberg game

ActiveCN109729510ALess interestGood content sharingDigital data protectionTransmissionDistribution systemContent sharing
The invention relates to a D2D content secure distribution method and system based on a Stackelberg game. According to the method and the system, in the cellular network, on the basis of ensuring theeffectiveness and the safety of user content sharing, the content safety distribution method and the content safety distribution system are designed and realized by utilizing the fusion effect of physical and social information of a user and based on the Sartan Korberg game. Wherein in an actual content distribution stage, a content requester needs to select one or more proper contents required bythe content requester from a plurality of content providers, so that a better content sharing service is obtained with less cost; And the content provider also needs to determine the distribution scheme according to the revenue and cost of the content provider, so that the content sharing service is provided for the content requester with less consumption and security risk, and more benefits areobtained at the same time. Establishment of a leader- follower model by using a Stemberberg game andcarries out simulation to optimize the unit content price and proportion (shown in the specification), and an optimal D2D content security distribution mode is obtained.
Owner:ARMY ENG UNIV OF PLA

Modular inflatable buffer module rescue flood prevention plate

The invention discloses a modular inflatable buffer module rescue flood prevention plate which comprises a main flood prevention plate body and a bottom flood prevention plate body. An arc-shaped connecting corner is arranged between the main flood prevention plate body and the bottom flood prevention plate body; the bottom of the bottom flood prevention plate body can press a whole flood prevention member through the gravity of water flow when a flood comes; inflatable buffer columns are arranged on the front side of the main flood prevention plate body; inner flood flow grooves are formed inthe inner side of the bottom flood prevention plate body, and the multiple inner flood flow grooves and the arc-shaped connecting corner can greatly buffer impacting flood flow; and trapezoidal supporting bases are arranged on the rear side of the main flood prevention plate body. The invention relates to the technical field of flood prevention rescue. By means of the modular inflatable buffer module rescue flood prevention plate, the problems that the buffer effect is poor under the impact of water flow, residents are isolated by the flood and cannot escape when the water flow is too high, and help cannot be provided for emergency rescue are solved; and after rescue inflatable floating blocks are inflated, the rescue inflatable floating blocks float on the water surface to allow the flood victims to escape in emergency.
Owner:童宗明

A satellite positioning method and system for trains based on collaborative integrity monitoring

The invention discloses a train satellite positioning method and a train satellite positioning system based on collaborative integrity monitoring. The method comprises the steps of acquiring offline basic data, predicting feature point positioning error offline protection limits distributed in a time-space range to be positioned to form a time-space distribution feature library, extracting observation information of a navigation satellite to a target train in real time and calculating the target train positioning error online protection limit in real time according to the observation information, calculating the feature point positioning error offline protection limit corresponding to the running time and mileage value of the target train positioning error online protection limit in the time-space distribution feature library, respectively comparing the target train positioning error online protection limit and the feature point positioning error offline protection limit corresponding to the running time and mileage value of the target train positioning error online protection limit with an alarm threshold, and adjusting the target train positioning decision scheme in real time according to the result of comparison. By adopting the technical scheme of the invention, the function of train positioning integrity monitoring can be improved effectively.
Owner:BEIJING JIAOTONG UNIV

Hydropower station centralized control center operation execution and maintenance flow anti-misoperation locking method

ActiveCN113675945AImprove safety benefitsRealize closed-loop interlock controlCircuit arrangementsError checkingIntrinsic safety
The invention provides a hydropower station centralized control center operation execution and maintenance flow anti-misoperation locking method, which is characterized in that double confirmation is conducted on instructions of a centralized control center end and a power grid dispatching end when the instructions are executed, if the instructions of the two ends are inconsistent, instruction issuing is pausedor flow locking is performed, and if the instructions of the two ends are consistent, a normal instruction execution link is conducted, wherein a power plant end execution instruction comprises a maintenance flow instruction and a network operation command process, double confirmation is carried out on the centralized control center end and power grid dispatching end instructions, anti-error checking locking is carried out in the whole process of the maintenance flow management function, and even misoperation anti-error locking is completed through transformation on an electronic speed controller monitoring system, so that regulation and control whole-process closed-loop interlocking control is realized, and the method can effectively control major risks of mistaken order issuing and misoperation, creates a 'soaking' type anti-misoperation safe dispatching environment for dispatching operation, greatly improves safety benefits of cascade power stations, and is a major breakthrough for construction of intrinsically safe enterprises.
Owner:CHINA YANGTZE POWER

Mechanical and electrical equipment installation mechanism for lifting single-lock bucket basket type rotary substation

The invention discloses a mechanical and electrical equipment installation mechanism for a lifting single-lock bucket basket type rotary substation. The mechanical and electrical equipment installation mechanism comprises an upright base joint and a telescopic joint which can rotate along a rotary column of a mechanism base, wherein a bucket basket used as an operating platform for loading is suspended on the upper part of the telescopic joint, a counterweight trolley is arranged on the lower part of the upright base joint, a tilting prevention rope for preventing the mechanism from overturning is arranged between the counterweight trolley and the telescopic joint, and the counterweight trolley can rotate along a circular track of the mechanism base along with the upright base joint and the telescopic joint, so that rotation at 360 degrees is implemented, the adaptive working face is wide and rotation is flexible and light; a hoisting mechanism of the telescopic joint has locking and braking functions, so that the hoisting mechanism can rest on any height, the previous work form for human installation of power transformation section equipment is changed, the potential safety hazard in an installation operation process is eliminated, the economic benefit is improved and the safety benefit is improved.
Owner:STATE GRID CORP OF CHINA +1

Suspension bridge-type insulation horizontal ladder

The invention discloses a suspension bridge-type insulation horizontal ladder. The suspension bridge-type insulation horizontal ladder comprises a horizontal ladder body and a rotation fixing body, wherein the rotation fixing body is arranged on a repair tower and comprises an upper horizontal plate and a lower horizontal plate, two fixed posts are arranged between the upper horizontal plate and the lower horizontal plate, fixed parts are arranged at left sides and right sides of the upper horizontal plate and the lower horizontal plate and are fixed on a vertical beam of the repair tower, thehorizontal ladder body comprises a first vertical rod, a second vertical rod and a plurality of horizontal rods, the plurality of horizontal rods are arranged between the first vertical rod and the second vertical rod, one end of each horizontal rod is fixedly connected with the first vertical rod, the other end of each horizontal rod is connected with the second vertical rod in a sliding way, chain hoops are fixedly connected with bottom ends of the first vertical rod and the second vertical rod and can be bonded with the fixed posts, fastening blocks are arranged at two ends of the chain hoops, and fastening holes are formed in the fastening blocks. The safety benefit is provided, the working difficulty is reduced, the working time is saved, and the working efficiency is improved.
Owner:BINZHOU POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +1

A method for carrying out dielectric loss and capacitance measurement on a transformer without detaching incoming cables

The invention relates to a method for carrying out dielectric loss and capacitance measurement on a transformer without detaching incoming cables. The method is characterized in that the method comprises the following steps: a dielectric loss tester, a testing transformer and a tested transformer are connected together; during testing, the cables are connected in series with a dielectric loss tester standard capacitor to serve as a test loop standard capacitor, the transformers form a test loop, the transformer dielectric loss value is obtained by comparing phase relation of standard loop and test loop signals, and the transformer capacitance can be obtained through calculating; and the transformer, of which the dielectric loss and the capacitance are determined, is used as a standard capacitor to form a standard loop, the cables serve as the test loop, and the dielectric loss and the capacitance of the cables can be calculated according to the dielectric loss and the capacitance of the transformer. According to the method, the dielectric loss and the capacitance of the transformer and the cables can be obtained simultaneously without detaching the high-voltage lead wires, so that the purposes of safe operation, normal maintenance and manpower and material resources saving are achieved; and the method has the advantages of being high in test work efficiency, safe and reliable and convenient to use and the like.
Owner:STATE GRID CORP OF CHINA +1

Tunnel vertical curve sight line induction system

ActiveCN112878232AImprove the sense of accuracy of judgmentImprove the judgment of the overall line shapeTraffic signalsRoad signsRoad traffic safetyInduction system
The invention relates to the technical field of tunnel traffic safety, and in particular relates to a tunnel vertical curve sight line induction system which is suitable for an expressway tunnel with the speed limit of 60 to 100 km/h and comprises a tunnel vertical curve road section composed of an uphill section, a variable slope section and a downhill section. The induction system for the vertical curve road section of the tunnel comprises a first high beam turning-on mark arranged 200 m in front of the starting point of the uphill section, a second high beam turning-on mark arranged at the starting point of the uphill section, belt lines and reflectors arranged on the tunnel side walls of the uphill section and the downhill section, flexible sight line induction columns which are arranged on the two sides of the uphill section road section and the two sides of the downhill section road section, and the height of the flexible sight line induction columns is gradually changed; the system further comprises a U-shaped LED self-luminous contour belt which is arranged on the whole vertical curve road section, fan-shaped reflective strip sets which are arranged on the side walls of the tunnel of the variable slope section, and variable slope point marks which are arranged at variable slope points. The segmented arrangement is adopted, and is easier to understand and execute by a driver according to a driving task and a driver factor theory.
Owner:WUHAN UNIV OF TECH

Convenient Sectional Support Method for Inclined Shaft in Mine

The invention relates to a convenient segmented support method for a mine slant chute comprising following steps: (1) the stability of a wall of the slant chute is calculated and analyzed to determine a support form according to the actual construction situation; (2) a chute link lane is dug every 15 meters downwards from the mouth of the well in the slant chute; (3) the slant chute is filled with backfill slag until the distance between the surface of the backfill slag and the well mouth is 2 meters, then wood boards are laid on the upper surface of the backfill slag inside the well and construction workers perform support construction operation sanding on the wood boards; (4) slag removal is performed in a next segmented chute link lane until the slag level inside the chute decreases by 2 meters; (5) construction workers perform the next support construction operation; (6) step (4) and (5) are repeated until the construction work is completed. The support method of the invention has the following beneficial effects: (1) the slant chute is filled with slag, slag is discharged by several times, support is performed by several times and the support circulation are continued until the slag surface level decreases to the completion of the slant chute support; (2) the safety factor is high.
Owner:CHINA HUAYE GROUP
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