548results about How to "Ensure safety and stability" patented technology

An EUV pod with fastening structure comprises an outer pod and an inner pod, wherein the upper cover of the inner pod is disposed with a plurality of retainers, and a plurality of supporters disposed on the outer pod of the EUV pod are used to press the plurality of retainers for the plurality of retainers to fasten and stabilize the reticle in the inner pod and thus ensure safety and stability of the reticle in the pod; by utilizing such design, risks of collisions of reticle in the pod due to vacillation of EUV pod during transportation can be reduced, and cost incurred by cracks and damages of reticles can also be greatly decreased.

An operation control method of a synchronization variable speed constant frequency wind generating set includes the strategies of AYC, synchronization control, low wind speed ceiling capacity follow control and high wind speed constant power control which includes the AYC, the synchronization control, the low wind speed ceiling capacity follow control and the high wind speed constant power control. An anemoscope and a wind vane measure the wind speed and wind direction information to generate a yaw deviation signal; a yaw motor is driven to execute left and right yaw according to the yaw direction and angle and limit the yaw velocity and meanwhile, the steering turns of the engine room are measured with the help of cables winding around a sensor, so as to execute safe untwist action, thus ensuring that the wind generating set realizes quick, accurate and safe effect of the wind wheel against wind. All the control strategies cooperate in work from the start to synchronization power generation according to the requirement of the set and external conditions, so as to ensure the safe and efficient operation of the wind generating set.

The invention discloses a copula-function-based method for acquiring relevant characteristics of wind power plant capacities. The method comprising the following steps: acquiring M cumulative distribution functions and cumulative distribution function values of the wind power plant capacity according to a wind power plant capacity sample; acquiring parameters of copula functions by using a maximum likelihood method; determining each copular function according to the parameters; acquiring experience copula function values according to the cumulative distribution functions and the cumulative distribution function values; calculating copula function values corresponding to the cumulative distribution function values according to each copula function; acquiring the Euclidean distances between the copula function values and the experience copula function values according to the copula function values and the experience copula function values; determining a copula function corresponding to the smallest Euclidean distance so as to describe the relevance of the wind power plant capacities; and calculating four relevance coefficients among the wind power plant capacities according to the copula functions and subsequently acquiring the relevance characteristics among the wind power plant capacities.

The invention relates to a power transmission line icing prediction method based on a quantum particle swarm and a wavelet nerve network. The power transmission line icing prediction method based on the quantum particle swarm and a wavelet nerve network comprises the following steps of acquiring historical icing meteorological data, namely an ambient temperature, a humidity, a wind speed, a wind direction, an air pressure, a lead temperature and an icing thickness; establishing an icing thickness prediction model by means of the wavelet nerve network; performing initial parameter optimization on the model through adding a quantum particle swarm algorithm of interference factors; and inputting the historical icing data for obtaining a predicated power transmission line icing thickness. The power transmission line icing prediction method has advantages of high prediction precision, high convergence speed, etc. The power transmission line icing prediction method can effectively predicate a line icing change rule and can be applied for power transmission line icing disaster early warning and treatment.

The invention relates to an assembly type ribbed steel plate shear wall with a frame, and belongs to the technical field of structural engineering. The assembly type ribbed steel plate shear wall with the frame comprises an embedded steel plate, frame columns, frame column partition plates, frame column connecting plates, connecting plates, transverse rib plates, vertical rib plates, frame beams, frame columns and frame column partition plates. In the assembly type ribbed steel plate shear wall with the frame, the embedded steel plate, the frame columns, the frame column partition plates, the frame column connecting plates, the transverse rib plates and the vertical rib plates are welded into a whole shear wall module in a factory; the connecting plates and the frame beams are welded integrally in the factory; the connecting plates are connected with the whole shear wall module through high-strength bolts and are not connected with the frame columns; the frame columns and the frame column partition plates are welded, and the frame beams and the frame columns are welded or connected through bolts or connected in a bolt-welding mixed mode. The assembly type ribbed steel plate shear wall has the advantages of being high in lateral stiffness, bearing capacity and ductility, good in anti-seismic property and easy to construct, holes can be formed flexibly, the construction period is shortened, and construction cost is reduced.

The invention discloses an automatic generation control (AGC) method for generating sets of a hydropower station. The AGC method is used for controlling the active power output of a plurality of generating sets according to an active power set value of a scheduling instruction, and is characterized by comprising the following steps of: 1) determining the active power adjustable range of the hydropower station when all the generating sets run in a non-oscillation area; 2) if the active power set value is within the active power adjustable range of the hydropower station, allocating the active power output of each generating set on the basis of ensuring that all the generating sets run in the non-oscillation area; and 3) if the active power set value is beyond the active power adjustable range of the hydropower station, enabling the generating sets which run in the non-oscillation area and have the highest priorities to enter an oscillation area for running in turn according to a pre-designed priority strategy. According to the AGC method for the generating sets of the hydropower station, the safety and stability of the generating sets of the hydropower station are ensured, and the safety and stability of a power grid are combined.

The invention discloses a non-contact ultraviolet pulse discharge monitoring device which comprises a sensor group, a signal conditioning unit connected with the sensor group and a microprocessor connected with the signal conditioning unit, wherein a power supply unit, a memory unit, a display unit, a control unit, a communication unit and a GPS (global positioning system) positioning unit are further connected onto the microprocessor, and the sensor group comprises an ultraviolet sensor. The non-contact ultraviolet pulse discharge monitoring device monitors the discharge conditions by the ultraviolet sensor, performs telecommunication through a communication unit, performs positioning through the GPS positioning unit, and cannot be interfered by high frequency; an further, the discharge can be found out before partial discharge breaks through insulation and damages power equipment, so that alarm can be given in time, measures can be taken, the stability and the safety of a power system are guaranteed, and the non-contact ultraviolet pulse discharge monitoring device has the advantages of high sensitivity, small size, portability and the like.

The invention discloses an excavation and preliminary bracing method for a soft rock tunnel. The excavation and preliminary bracing construction for the soft rock tunnel are performed in sections from back to front. When any section is subjected to excavation and preliminary bracing construction, the method comprises the following steps: 1) confirming basic mechanical parameters of the surrounding rock; 2) confirming the reserved excavated volume of the tunnel: confirming the reserved excavated volume of the currently constructed section according to a theoretical value of inward displacement of the surrounding rock of the soft rock tunnel after being braced; 3) excavating the tunnel; 4) confirming a preliminary bracing structure of the tunnel; 5) constructing the preliminary bracing of the tunnel; 6) performing the excavation and preliminary bracing construction of the next section; and 7) repeating the step 6) till all the processes of the excavation and preliminary bracing construction of the soft rock tunnel are completed. The method disclosed by the invention has the advantages of simple steps, reasonable design, convenience in realization and good use effect; the reserved excavated volume is confirmed according to the surrounding rock deformation condition of the soft rock tunnel; and the steel bracket and the anchoring net sprayed preliminary bracing structure are coordinated for performing all-section preliminary bracing on the tunnel.

The offshore operation sinker wheel machine comprises the main floating box, stable floating box, leg well, lift hydraulic jack, push hydraulic jack, crane, with each part detachable. The main floating box is in enclosed boat structure, with the middle installed with crane, fore and back installed with linking beam, with the end installed with stabilizing floating box that installs with leg well and lift hydraulic jack and push hydraulic jack at the rear of the main floating box. Due to the tow jacks, it can solve the displacement of the sinker wheel machine. The crane can meet the needs for construction and goods unloading. It mainly applies to offshore hoisting operation or loading alike jobs.

The invention discloses a large data intelligent analysis platform oriented to the field of social security, comprises a relational network analysis module, which is used for constructing one or morethematic databases according to multi-source data, constructing a network topology structure based on the thematic databases, obtaining labels of each node in the network topology structure, and mining key nodes and / or community structures in the network topology structure according to a set scene task; The trajectory behavior analysis module is used for acquiring different types of trajectory data, generating different types of trajectory models according to the trajectory data, and performing trajectory analysis based on various trajectory models; The video intelligent analysis module is used for obtaining the multi-scale features of pedestrians according to the set pedestrian detection and tracking algorithm, extracting the semantic features, gait features and visual features of pedestrians according to the multi-scale features, so as to identify and search the pedestrians. The invention can effectively improve the pre-warning capability and the pre-warning level, and provides powerful technical support for the emergency response.

The invention discloses a roof-cutting and pressure relief roadway-protecting method for an end-mining equipment remove gateway of a coal face, and belongs to the technical field of mining engineeringmine pressure control and roadway maintenance. The problem that the mining rate of a mining area is low due to the large size of a protection coal pillar between an existing working face stop line and a mining area main roadway is solved. According to the roof-cutting and pressure relief roadway-protecting method for the end-mining equipment remove gateway of the coal face, the working face support equipment remove gateway is excavated in advance along the stop line position and a propagation path of the working face mining advanced supporting pressure is cut off through deep hole pre-cracking of a coal seam roof. The mining area main roadway is protected from the mining action of the mining face on both sides and the width of the protection coal pillar between the working face stop lineand the mining area main roadway is reduced, so that the mining rate of the mining area is improved. The mining rate of the mining area of non-renewable coal resources is improved under the premise ofensuring the safety and stability of the mining area main roadway.

The invention discloses a semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt. The anchor bolt consists of a controller (1), a communicating line (2), a sensor (3), a variable-stiffness control device (12), a sleeve (20), a hollow anchor pipe (5), an anchor gear (10), an anchoring spring (11) and a support structure (4), wherein the variable-stiffness control device (12) consists of a hydraulic cylinder (13), a dual-striking piston (14), oil (16), a bypass pipeline (17), an electro-hydraulic servo valve (18), a stiffness spring (19a), a stiffness spring (19b), and a support box (21) and a base plate (22) connected through a bolt (23). According to the semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt, the unrecoverable problems of excessive deformation of an anchoring and shotcreting support structure, unavailable self-adjustment of the support structure, even damages and the like caused by seismic actions are solved, and the seismic resistance of the anchoring and shotcreting support structure and the safety stability of a support body are improved.

The invention discloses a three-dimensional numerical control method for a bridge section precasting technology, which comprises the following steps: dividing the bridge into sections; calculating the global coordinates of the section boundary control point and the geometric dimensions of each section; inputting the axial compression value and camber of the sections, correcting the global coordinates of the section boundary control point, and calculating new coordinates; calculating the three-dimensional coordinate transition matrix of any point of the adjacent sections; calculating manufacturing errors of the sections and adjustment quantities of the adjacent sections in six directions; calculating the three-dimensional coordinate transition matrix of any point of the adjacent sections after considering the section manufacturing errors; judging whether the beam surface is twisted according to the manufacturing errors of the sections; and according to the three-dimensional coordinate transition matrix of any point of the adjacent sections after considering the section manufacturing errors, outputting the theoretical calculation values of the matching coordinates of the initial section locating point, and the theoretical calculation values of the section dimensions. The invention realizes three-dimensional control on the geometric line shapes of the bridge sections, and reduces the manufacturing errors caused by the separate control on plane and facade line shapes.

The invention discloses a method for wind speed prediction based on an experience Copula function. According to the method, no limits exist on marginal distribution and joint distribution, the difficulty of direct construction of a multi-element random variable joint distribution function is avoided, and the statistical situations at various wind speeds can be obtained flexibly according to the constructed experience Copula function, so that the wind speed with the maximum probability value is obtained and used as the predicted wind speed of the next moment. Due to interval division, the wind speeds within a certain range have the same characteristics, and finally wind speed sample data are divided into data sets with different characteristics. Under the conditions that the probability corresponding to the wind speed of the previous moment and different probabilities of the wind speed of the next moment are known, finally, the wind speed corresponding to the probability of the wind speed, with the maximum probability value, of the next moment is selected as the predicted wind speed, and a confidence interval with the confidence coefficient being 1-alpha can be obtained. According to the method for wind speed prediction based on the experience Copula function, it is of great significance in improving the level of power grid running, ensuring safety and stability of an electric power system, improving economy of the electric power system, and reducing greenhouse gas emission.

The invention relates to a method for detecting the prestress construction quality of anchoring engineering. The method comprises the following steps of: installing a traditional anchor rod (cable) tension tester to conduct a pull experiment; obtaining a pull force value of a current anchor cable, i.e. a prestress load value applied by anchoring engineering construction through mechanical analysis; comparing the prestress load value with an anchoring engineering prestress load value required by design, and calculating a difference thereof; and judging whether the prestress construction quality of the anchoring engineering accords with design specification requirements. Therefore, the invention solves the quality detection problem of the prestress construction of the anchoring engineering and provides an effective solution for detecting quality hidden troubles, such as insufficient prestress load or overstressing load and the like and ensuring the construction quality of the anchoring engineering and the safety of engineering structures.

The invention relates to a remote detector of grouped data transmission water tube network pump station, wherein it provides one GPRS detecting station which can be increased via need; the GPRS detecting station has simple address selection, simple installment and low cost, to realize online detected grouped data transmission water tube network pump station. The invention comprises water tube network remote detection distributor and area pump station detector, while the first one has tube network remote terminal, tube network wireless GPRS network, and APN special-wire network, and distributor, and the area pump station detector has pump station terminal, pump station detecting center and pump station wireless GPRS network.

The invention provides a flat wheel detection data acquisition and signal processing system, which consists of seven parts, namely a power module, an AD sampling input front end conditioning module, an AD sampling conversion module, a data program memory module, an interruption management module, a high speed communication module and a reset module. The invention applies a high speed floating point DSP chip, a high speed low consumption double 12-bit parallel A / D converter, a dual-ported RAM chip and a complicated programmable logic device to the flat wheel detection data acquisition and signal processing system, develops a data acquisition and processing system taking the high speed floating point DSP as a core processor, and improves the speed, accuracy and stability of flat wheel detection data acquisition and processing (in addition, the system control, communication and monitoring is handled by ARM-VxWORK, and communication takes a form of network card.), thereby improving the performance index of the whole flat wheel detection system.

The invention discloses a heat absorption core of a collector used for a solar heat pump water heating system, a naked plate type collector, a collector with a glass cover plate as well as a direct-expansion solar heat pump water heating system. The naked plate type collector and collector with the glass cover plate are connected through an electromagnetic valve and a refrigerant copper pipe and, a PLC (Programmable Logic Controller) controls the open and close of the electromagnetic valve according to different external conditions so as to realize the separated operation and series operation of the naked plate type collector and the collector with the glass cover plate. Refrigerant gas through evaporation and compression enters a plate-type heat exchanger so as to carry out countercurrent flow heat exchange with circulating water, hot water temperature is fed back to a controller through a temperature sensor, and the controller controls the open and stop of a compressor. With the structure, the system has the advantages of high energy efficiency ratio, good environmental adaptation, simple structure and the like and is environment-friendly and energy-saving.

The invention relates to the technical field of municipal lighting equipment, and particularly relates to a quakeproof steel pole tower. The quakeproof steel pole tower comprises a pole body and a base, wherein the pole body is a hollow pipe, the bottom of the pole body is connected to the base, the base is fixed on the ground, and the base is an elastic device and comprises a base body, a bracket, an anti-off spring, a longitudinal shock absorber and a transverse shock absorber. The base is of an omnibearing elastic buffering structure, so that when an earthquake occurs, the base can eliminate or obviously reduce an acting force exerted on the pole body to improve the quakeproof capacity of the pole body, thereby improving the reliability of the steel pole tower and ensuring the safety and stability of transmission lines.

The invention discloses a dispatching method for overcoming current unbalance of a wind power grid-connected system. A TCSC is considered in electric power system dispatching, a bi-layer planning theory is introduced, the full-grid current balance degree in a dispatching period serves as an optimization objective of an upper-layer model, contributions of a conventional unit serve as a control measure, and the balance, the safety and the stability of current distribution of an overall grid are guaranteed; the key cross section current balance degree in the dispatching period serves as an optimization objective of a lower-layer model, and the ESS charging-discharging power and the TCSC serve as control measures so that the balance of current distribution of key cross sections can be guaranteed. The balance of the current is overall and locally guaranteed through coordinated control of the contributions of the conventional unit, the ESS charging-discharging power and the TCSC, the current disturbance problem caused by wind power fluctuation is well solved, the safety of the system can be improved, current distribution of the system can be optimized, current fluctuation of a line can be reduced, a safe and stable state of the overall grid is strengthened, and the requirements of system operation dispatching are met.

The invention provides a method and a system for information interaction and relates to the technical field of computers. The method comprises the steps: an application programming interface (API) abstraction layer is established and the API abstraction layer is respectively communicated with a Web side and a client side; and information interaction of the Web side and the client side can be achieved through the API abstraction layer. The system comprises the Web side, the client side and the API abstraction layer. The API abstraction layer is used for being respectively communicated with the Web side and the client side. The Web side and the client side are respectively used for conducting the information interaction through the API abstraction layer. According to the technical scheme, a port of the client side can not be directly called by the Web side so that safety and reliability of the client side are guaranteed; and due to existence of the API abstraction layer, change of any one of the Web side and the client side can not directly influence the other side, a plurality of environments or platforms such as Windows, Mac and Linux or a mobile terminal are synchronously compatible under the condition that the same set of API is changed a little so that flexibility, compatibility and expandability are good. In addition, the API abstraction layer can be released directly without the requirement for upgrading an application program by a user so that operation and maintenance are easy.

The invention discloses a collapsible loess tunnel construction method. Before tunneling, a waterproof layer and a sandstone layer are arranged below a road surface right above a tunnel; the tunnel is excavated by a double guide tunnel method, side guide tunnels on the left and the right of the tunnel are firstly excavated, and temporary steel arch supports are constructed; concrete piles are respectively arranged in a lower soil layer along the bottoms of the two side guide tunnels, and the bottoms of the concrete piles penetrate into a non-collapsible soil layer; emulsified asphalt is filled into the soil layer between the two adjacent concrete piles, and a seepage isolation barrier is formed; an initial arch wall liner is formed; soil between the two side guide tunnels is excavated by a benching tunneling construction method, and a middle tunnel is formed; and the two temporary supports are detached, and a secondary tunnel liner is cast. By the aid of the collapsible loess tunnel construction method, an overlying stratum on the collapsible loess tunnel can be prevented from collapsible settlement, and the tunnel liner is safe and stable.

The invention relates to the field of pipeline laying on land or underground, in particular to an externally arranged, compacted and grouted Larsen steel sheet pile composite retaining structure and a use method thereof. The externally arranged, compacted and grouted Larsen steel sheet pile composite retaining structure comprises a top pipe (1) arranged in a foundation pit (10), and is characterized by further comprising Larsen piles (2), circuit purlins (3), connectors (4) and inner supporting pipes (5); all the Larsen piles (2) are vertically arranged in the foundation pit (10); and the circuit purlins (3) are horizontally arranged in the foundation pit (10). The use method of the externally arranged, compacted and grouted Larsen steel sheet pile composite retaining structure is characterized by comprising the following steps of inserting of the Larsen piles (2), compacting and grouting, soil blocked excavation, construction of the top pipe (1) and soil backfilling. The externally arranged, compacted and grouted Larsen steel sheet pile composite retaining structure is high in tensile strength, bending resistance, and environment adaptability.

The invention discloses a special manipulator clamping device for packaging boxes, which includes a clamping mechanism, an inclination adjustment mechanism, a horizontal adjustment mechanism and a vertical adjustment mechanism. The output shaft is provided with a driving gear, one side of the driving gear is a first driven gear, the other side of the first driven gear is provided with a second driven gear, and the first driven gear and the second driven gear are provided with grabbing gears. Assemblies, the grasping assembly includes a first connecting rod assembly, one end of the first connecting rod assembly is connected to the driven gear, the other end of the first connecting rod assembly is hinged with a second connecting rod, and the other end of the second connecting rod is provided with a clamping The middle part of the second connecting rod is hinged with a limit rod, and the other end of the limit rod is hinged on the frame, and one end of the frame is provided with a connecting part; the present invention can control the size of the grasping force, avoiding the The potential safety hazard caused by uncontrollable size improves the reliability and stability of the overall device.

The invention discloses an identity identification system and a method based on image and somatosensory analysis. The system comprises a data acquisition module, a data analysis center and a security dispatching center connected in sequence, wherein the data acquisition module is used for acquiring face images and body actions in a security area; the data analysis center is used for analyzing the face images, expressions and the body actions; and the security dispatching center is used for carrying out security dispatching according to a result obtained through analysis of the data analysis center. According to the identity identification system and the method based on image and somatosensory analysis, whether a person in the security area enters illegally is judged through the face image, and security dispatching measures are taken; expression analysis is carried out on a legally-entering person; and when an abnormal expression is analyzed and obtained, a body action is further analyzed, and a more accurate basis is provided for judgment of hidden safety dangers.

The invention relates to a hole plate mixed spiral flow pipeline energy dissipating device which belongs to the technical field of pipeline water transmission and is characterized in that the hole plate mixed spiral flow pipeline energy dissipating device is in a screen mesh type. The hole plate mixed spiral flow pipeline energy dissipating device consists of an outer pipe 1, an inner pipe 2, a flange 3, a hole plate 4, inclined holes 5, non-inclined holes 6 and a rotating shaft 7, wherein the outer pipe 1 is concentrically connected with the inner pipe 2 through the flange 3, the inclined holes 5 are symmetrically and uniformly formed around the inner pipe 2 in accordance with inclination angles, the inner pipe 2 is connected with the first hole plate 4, the hole plates 4 are connected through the rotating shaft 7 which coincides with the central axis of the outer pipe 1, and each non-inclined hole 6 is formed on each hole plate 4 in the axis direction. According to the hole plate mixed spiral flow pipeline energy dissipating device, the adjusting range of pipeline energy dissipation is greatly increased in a condition that the water transmission flow is not affected, so that the axial and circumferential force balance of the energy dissipating device is realized, the defect of pipe vibration in the process of energy dissipation is completely overcome, the safety and stability of a water transmission system are guaranteed, and the service life is prolonged.

The invention discloses a compressed air energy storage system which comprises a motor, an air compression unit connected with the motor, an air storage chamber storing compressed air and a temperature controller controlling the temperature inside the air storage chamber. A water atomizing and spraying mechanism used for keeping the temperature inside the air storage chamber stable and a temperature sensor used for measuring the temperature inside the air storage chamber. The air compression unit is used for sucking in air, and after the air is compressed, the air compression unit delivers the compressed air to the air storage chamber through an air channel to be stored. The temperature controller is connected with the temperature sensor so as to receive signals of the temperature sensor. The temperature controller is arranged in a pipeline connected with the water atomizing and spraying mechanism so as to control the work state of the water atomizing and spraying mechanism according to the signals, guarantee that the temperature of the air inside the air storage chamber is kept in a relatively stable temperature interval all the time, prevent frequent alternation of heat and cold of the inner wall of the air storage chamber and guarantee that the air storage chamber is safe and stable.

The invention relates to a large-diameter cylinder body outer wall climbing device, in particular to a lifting device. The device solves the problems of the existing large-diameter cylinder body outer wall climbing device using a steel wire rope reel mechanism: a steel wire rope is easily polluted, a cylinder body is damaged, the steel wire rope is hard to fix, and a platform is unstable when being lifted. The device comprises a motor installed on the platform, a speed reducer and roller wheels installed on the platform closely to the outer wall of the cylinder body, wherein the two roller wheels are symmetrically arranged on the platform by movable brackets; a support oil cylinder is installed between the two movable brackets; the motor drives the speed reducer to lead the roller wheels to roll up and down along the cylinder wall by chains; a brake skid shoe is arranged under the platform by a skid shoe bracket, and a brake oil cylinder is positioned between the skid shoe bracket and the platform; and the platform is also provided with a hydraulic station, an electrical system, an electrical cabinet and a cable drum device. The device is applicable to overhauling, maintaining, washing and the like of a large-diameter cylinder body outer wall.