17results about How to "Reduce running loss" patented technology

The invention belongs to the technical field of oil and gas leakage detection and alarm, and particularly relates to a safety valve inner leakage detection prompt sealing gasket and a use method.The safety valve inner leakage detection prompt sealing gasket comprises a sealing washer, a reinforcing ring is embedded in the inner ring of the sealing washer, and a diaphragm piece is fixedly connected to the inner side of the reinforcing ring; the blowing end of the sound production part faces the inner cavity of the safety valve and is used for ensuring that gas from the inner cavity of the safety valve blows the sound production part, and a plurality of cracking grooves are uniformly formed in the diaphragm piece in the radial direction; the safety valve can give a sound alarm when small flow passes through and give a fracture alarm when large flow passes through, can timely discover internal sealing leakage caused by environmental temperature, valve body quality, spring failure, unreasonable adjustment and the like in the production process of the safety valve, especially can timely discover small leakage, provides timely discrimination capability for production abnormity, and improves production efficiency. Production operation and maintenance activities are greatly facilitated, material loss is reduced, production is stable, and the operation and maintenance cost is reduced.

The invention relates to the technical field of rana nigromaculata slaughtering, in particular to a rana nigromaculata slaughtering machine. Comprising a rack, and a supporting plate, a rolling belt, a blade, a viscera removing piece, a conveying belt, a push rod, a pneumatic clamping jaw, a head removing blade and the like are arranged above the rack; the lower portion of the supporting plate is driven by a rolling motor, so that the rolling belts on the two sides rotate at the same rotating speed. The rana nigromaculata is clamped by the rolling belts on the two sides and conveyed along a straight line, belly opening and viscera removing operation is sequentially completed, then the rana nigromaculata is conveyed to the baffle through the conveying belt to be subjected to peeling and head removing, the rana nigromaculata is pushed out through the push rod after peeling and head removing are completed, and continuous slaughtering of the next rana nigromaculata is achieved circularly. The device has the advantages of short time consumption, high efficiency, low labor cost, small operation difficulty, small occupied area, simple structure, high automation degree and the like, can meet the large-scale slaughtering requirements of rana nigromaculata, and has a good application prospect.

The invention relates to the technical field of electric energy routers, in particular to a power distribution area flexible mutual aid system based on an electric energy router, and the system is characterized in that a DC bus in a flexible mutual aid device is connected with an external power distribution area through a plurality of bidirectional DC / AC ports, and is used for completing electrical coupling and power intercommunication; the plurality of bidirectional DC / AC ports are connected with the direct current bus in parallel, the direct current bus is connected with an energy storage port and a photovoltaic port, the energy storage port is communicated with an external energy storage device, the photovoltaic port is communicated with an external photovoltaic device, and the flexible mutual aid device is communicated with an external power grid dispatching through a controller. According to the invention, normalized flexible interconnection between feeder lines is realized through the flexible mutual aid device, potential safety hazards caused by frequent displacement of a conventional switch based on an interconnection switch are avoided, the control flexibility and rapidity of the power distribution network are improved, and the power distribution network has the advantages of open-loop operation and closed-loop operation at the same time.

The invention discloses an air supply device and method for automatically adjusting the air supply amount and the oxygen content based on the boiler temperature. The device comprises a draught fan, an air supply pipeline, an auxiliary oxygen pipeline, an adjusting mechanism, an air storage part, a heating part and a thermal expansion and cold contraction part. One end of the air supply pipeline is communicated with the fan, and the other end is butted with a boiler air inlet; two ends of the auxiliary oxygen pipeline are respectively communicated with the air storage cavity of the air storage part and the air supply pipeline; the heating piece is assembled on the gas storage piece and is used for heating oxygen in the gas storage cavity and the thermal expansion and cold contraction piece; the heat expansion and cold contraction piece is fixedly connected with the sealing plate, the sealing plate can be driven to move in a reciprocating mode through the heat expansion and cold contraction effect so as to adjust the through-flow area of a communication channel between the gas storage cavity and the auxiliary oxygen pipeline, the heat expansion and cold contraction piece and the draught fan cooperate to achieve automatic adjustment of the air supply amount and the oxygen content based on the boiler temperature, manual intervention is reduced, and the efficiency is improved. The service life of equipment is prolonged, and stable and efficient operation of the boiler is guaranteed.

The utility model relates to the technical field of feeders, and discloses a vibration feeder convenient to adjust, which comprises a vibration assembly and a screening assembly, the screening assembly is arranged on the inner walls of the two sides of the vibration assembly, the vibration assembly comprises a side plate, and a feeding notch is welded at the tail end of the top of the side plate. A slope sliding plate is welded to the feeding notch and the inner wall of one side of the side plate, a sieve plate is fixedly installed on the inner walls of the two sides of the top of the side plate, a row of classification blocks are evenly arranged on the outer wall of the bottom of the sieve plate, an upper-layer inclined plate and a bottom-layer inclined plate are arranged on the inner walls of the two sides of the bottom of the side plate, and a certain gap exists between the upper-layer inclined plate and the slope sliding plate. The large materials move backwards under the vibration effect and slide downwards to the bottom layer inclined plate along the inclined plane sliding plate, the small particle materials screened by the screen plate fall to the upper layer inclined plate, preliminary classification is achieved, through vibration of the screen plate, the large materials move backwards and slide to the bottom layer inclined plate through the inclined plane sliding plate, and the small particle materials fall to the upper layer inclined plate. And automatic classification is realized.

The application discloses a trigger optimization operation method suitable for a hybrid power grid commutation converter. When detecting that a fault occurs in an inverter-side alternating current system, a synchronous commutation voltage phase value corresponding to a current to-be-conducted bridge arm is assumed as a trigger angle to trigger, then a prediction means is used to obtain specific conditions of a supplied commutation area and a demanded commutation area in a next commutation process after triggering, and whether triggering is executed at present is judged based on the specific conditions. If the specific conditions do not satisfy preset optimal trigger conditions, a pulse signal is blocked, phase value updating is waited for, and the same operation of the new trigger angle corresponding to the phase value is executed until the preset conditions are satisfied. When the conditions are satisfied, a trigger pulse signal is directly sent to perform actual triggering, so that an optimal trigger time is found. The application can significantly improve the power transmission capacity of a direct current power transmission system during a fault in the inverter-side alternating current system, and improve the ability of the hybrid power grid commutation converter to resist commutation failure.

The invention discloses a power distribution network flexible networking method based on a decision converter model, and the method comprises the steps: obtaining historical operation data of a power distribution network in a normal operation state and a fault operation state, and constructing an expert data set based on the historical operation data; dividing the expert data set into discrete data and continuous data, performing marking processing, and uniformly converting the discrete data and the continuous data into a discrete integer marking sequence to construct a training sample set; constructing a decision converter model comprising an encoder, a converter and a decoder; extracting training samples from the training sample set in batches to train a decision converter model; and performing recursive solution on a flexible networking problem in a real-time operation scene of the power distribution network by using the trained decision converter model, and outputting an approximate optimal decision scheme for flexible networking of the power distribution network. According to the method, the flexible networking decision scheme of the power distribution network can be quickly generated under different operation conditions such as a normal operation state and a fault operation state of the power distribution network, and the operation economy and the operation reliability of the power distribution network are improved.

The application discloses a heat management system, an energy storage system and a heat management method thereof, and belongs to the technical field of heat management. The heat management system comprises a compressor, a first heat exchanger, a power module, a second heat exchanger and a battery cooling module which are connected in series into a circulating loop. In the first working mode, the heat management system exchanges heat between the battery and the power module by using compression refrigeration. In the second working mode, the battery and the power module exchange heat by using liquid cooling heat exchange respectively. In the third working mode, the heat management system exchanges heat between the power module by using compression refrigeration and exchanges heat between the battery by using liquid cooling heat exchange. The integration of the power module and the battery cooling module can reduce the number of components, and the liquid cooling loop of the power module does not need to be arranged separately, so that the layout of the heat management system is more compact, the occupied space is reduced, and thus the cost, the operation loss and the refrigerant leakage risk can be reduced, and the stability and reliability of the heat management system are improved.

The application relates to the technical field of power distribution equipment, and discloses a high-energy-efficiency intelligent hybrid type terminal voltage management device for distribution areas, which comprises a current and voltage sampling module, an intelligent voltage regulating controller module, a voltage regulating transformer module and an intelligent capacitor bank connected to a terminal line of a distribution area; further comprises an environment regulation unit, a safety protection unit, a seamless bypass unit and an Internet of Things remote control device; the current and voltage sampling module is used for collecting electrical parameters of the distribution line, and the intelligent voltage regulating controller module is used for overall planning and control of the voltage regulating transformer module and the intelligent capacitor; the terminal voltage regulation and dynamic reactive power compensation are realized; the device is combined with hierarchical temperature control, low-temperature anti-freezing, multi-stage safety protection and Internet of Things remote control; the device has local man-machine interaction and fault bypass switching functions, is reliable in operation, high in integration, strong in intelligence and wide in adaptability, and is suitable for terminal voltage management and power quality optimization of various urban and rural low-voltage distribution areas.

This invention belongs to the field of power technology, specifically relating to a method, system, equipment, and medium for regulating the power of electric vehicle charging piles. The method includes the following steps: acquiring historical power grid operation data for each distribution area and establishing an objective function; obtaining a Pareto optimal solution set using a multi-objective optimization method based on particle swarm optimization algorithm according to the objective function; calculating the per-unit voltage values ​​of all distribution network nodes in each time period based on the Pareto optimal solution set; selecting solutions where no voltage crossover occurs at the per-unit voltage values ​​of the distribution network nodes, calculating the corresponding total voltage deviation; selecting the solution with the smallest total voltage deviation as the optimal solution for day-ahead optimization; and controlling the charging and discharging of the charging piles according to the optimal solution for day-ahead optimization. Accuracy is improved by filtering the Pareto solution set obtained from the multi-objective optimization results.

The lifting packaging machine comprises a machine frame, a lifting device, a film feeding device and a heat sealing device, the lifting device, the film feeding device and the heat sealing device are installed on the machine frame, the lifting device comprises a lifting frame arranged on the machine frame in a lifting and sliding mode, and a material storage mechanism is arranged in the lifting frame; the material storage mechanism comprises a plurality of material storage cavities used for independently storing packaging materials, a feeding assembly allowing the packaging materials to enter each material storage cavity and a plurality of discharging assemblies communicating with the material storage cavities, and the multiple discharging assemblies and the multiple material storage cavities are arranged in a one-to-one correspondence mode. The lifting frame is provided with a control assembly which is matched with the discharging assembly and controls the discharging assembly to be switched between the opening state and the closing state. The packaging machine has the following advantages and effects that the output efficiency of single lifting can be improved, so that the overall processing efficiency of the packaging machine is improved, and the operation loss of equipment is reduced.

The invention discloses a multivariable cooperative control method and system for a wind generating set, and relates to the field of wind generating sets, and the system comprises a fusion module which is used for collecting the wind speed, rotating speed, pitch angle, cabin vibration and power grid voltage signals of the wind generating set, and carrying out the normalization processing of each signal, so as to construct a multi-dimensional data matrix; the analysis module is used for receiving the multi-dimensional data matrix, mining a nonlinear association relationship among variables in the multi-dimensional data matrix and outputting a quantized coupling coefficient table and an association direction identifier; according to the multi-variable cooperative control method, the nonlinear incidence relation between the variables is deeply mined by accurately collecting and optimizing the multiple types of operation signals, scientific disassembly of the total power adjustment target is achieved, the accuracy of multi-variable cooperative control is effectively improved, and the influence of variable coupling interference on the adjustment effect is greatly reduced.

The invention relates to the technical field of electric power systems, in particular to a capacity optimization configuration method, device and equipment for a DRU-MMC series hybrid converter and a medium, and the method comprises the steps: building a topological structure of an offshore wind power delivery system, configuring a reactive power support function of a wind turbine generator, and adopting a constant power factor to control a dynamic compensation reactive power demand; configuring an auxiliary MMC to execute active filtering and dynamic compensation functions, absorbing harmonic current generated by the DRU, and compensating incompletely compensated reactive power of the wind turbine generator; the rated capacity of the auxiliary MMC is optimally calculated according to the residual reactive power demand after compensation of the wind turbine generator and the filtering demand of the auxiliary MMC; by utilizing the reactive power regulation capability of the wind turbine generator, the auxiliary MMC only needs to process a small amount of dynamic reactive power and reduce the capacity demand and the direct current voltage distribution proportion, so that on the premise of ensuring reactive power balance and electric energy quality, the equipment investment, the operation loss and the occupied area of an offshore platform are reduced, and the economical efficiency and the applicability of the system are improved.

The utility model discloses a microwave treatment device for processing modified bentonite, which belongs to the field of bentonite processing and comprises a microwave component, a supporting component is arranged in the microwave component, a placing box is arranged at the top end of the supporting component, and a vibration component is arranged below the placing box and positioned in the supporting component; the vibration assembly comprises a fixed bottom plate, a support is fixedly connected to the top end of the fixed bottom plate, a transverse strip is fixedly connected to the interior of the support, a sliding rod is slidably connected to the middle of the transverse strip, and a limiting block is fixedly connected to the upper end of the sliding rod. The rotary motion is converted into the vertical motion of the beating head, and the beating head continuously impacts the placing box to uniformly disperse bentonite particles, so that the problem of local overheating or insufficient heating caused by accumulation during microwave treatment is avoided, the heating uniformity and reaction efficiency of the modified bentonite are remarkably improved, and the quality stability of a product is guaranteed.

The invention discloses a fixed-frequency impeller inner cylinder eccentricity detection method and a washing machine thereof, and relates to the field of washing machine eccentricity detection. The fixed-frequency impeller inner cylinder eccentricity detection method comprises the following steps: a starting step: starting a forward winding of a motor to drive an inner cylinder to rotate forward, or starting a reverse winding of the motor to drive the inner cylinder to rotate reversely; an acquisition step: acquiring a back electromotive force signal of the reverse winding in the forward rotation process of the inner cylinder, or acquiring a back electromotive force signal of the forward winding in the reverse rotation process of the inner cylinder; and a processing step: calculating a rising slope or a first voltage difference or a voltage fluctuation value of the counter electromotive force signal in the time period T, and judging the eccentricity of the inner cylinder according to the rising slope or the first voltage difference or the voltage fluctuation value, and the eccentricity of the output inner cylinder is larger when the rising slope is smaller or the first voltage difference is smaller or the voltage fluctuation value is larger. The eccentricity detection method and the washing machine are high in detection accuracy, low in cost, short in consumed time, low in noise and low in running loss of the washing machine.

The application relates to a driving task allocation method and device based on data-driven heavy-load combined train driving hierarchical evaluation and a computer device. The method comprises the following steps: acquiring train running state data of a heavy-load combined train driven by a to-be-analyzed driver in multiple driving sections; from each driving section, a target driving section meeting a preset static geographic condition is screened out, and target train running state data in the target driving section is screened out from the train running state data; according to the target train running state data and the train running state data, a target driving evaluation result of the to-be-analyzed driver is determined; from the to-be-analyzed drivers, a target driver whose target driving evaluation result matches a task type of a to-be-analyzed driving task is screened out, and the to-be-analyzed driving task is allocated to the target driver. By using the method, the running efficiency of the heavy-load combined train can be improved.

Embodiments of the present application provide a control method and control circuit of a hybrid device, and relate to the technical field of electronics. The hybrid device comprises a first switch tube and a second switch tube connected in parallel. The control method comprises: obtaining a load current; the load current is a current flowing through a load. If the load current is less than a first current, the first switch tube is controlled to be turned on, and the second switch tube is controlled to be turned off; the first current is a turning point current of the first switch tube. If the load current is greater than the first current and less than a second current, the first switch tube is controlled to be turned on, and then the second switch tube is controlled to be turned on; the second current is a maximum pulse current of the first switch tube. If the load current is greater than the second current, the second switch tube is controlled to be turned on, and then the first switch tube is controlled to be turned on; after the first switch tube is controlled to be turned off, the second switch tube is controlled to be turned off. The control method can reduce the operating loss of the hybrid device.