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 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 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 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 provides a true triaxial seepage test device under the action of surrounding rock or soil. The test device comprises: a frame, pressure-bearing end plates, a servo temperature control system, a stress deformation data acquisition and processing system, a servo control loading system, a servo hydraulic system, a servo seepage loading system and a wireless acoustic emission data acquisition and processing system. A test method of the test device comprises: model preparation, preparation before loading of a test piece to be detected, true triaxial seepage test under the action of surrounding rock (soil), and true triaxial seepage test stopping. The device simulates the true stress on the underground structure by a surrounding rock (soil) structure on the outer side of the underground structure, applies different stresses to the six pressure-bearing end plates, controls the flows and pressure of pressurized seepage water in different directions, acquires the real stress dataof the underground structure under combined action of surrounding rock (soil) through combination of multiple control systems and provides the scientific basis for the design and construction of the underground structure.

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 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 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.