40results about How to "Economical and reliable operation" patented technology

The invention discloses a front-end combined purification process used to produce liquefied natural gas from mixed gas richly containing methane, which comprises four unit parts: acid gas removal, drying and dehydration, heavy hydrocarbon removal and demercuration. The mixed gas firstly undergoes a purification treatment through composite amine solution, CO2, H2S and HCN acid gases in the mixed gas are removed to the concentration less than or equal to 20ppm; the moisture in the gas is removed to a dew point at normal pressure less than or equal to minus 70 DEG C through isopiestic drying and dehydration treatment, then heavy hydrocarbon components above C5 are removed to the concentration less than or equal to 10ppm through temperature-changing pressure-changing absorption and purification treatment; finally the mercury content is removed to the value less than or equal to 0.001mu g/Nm<3> through the demercuration of demercuration adsorbent. The process has better purification effect than the conventional process route, improves the utilization rate of the raw materials and decreases the energy consumption during the purification; and the operation indexes of the units are easier to control.

The invention discloses a method for calculating bearing capacity of node ring plates of circumferential stiffeners in a steel tube tower by using true-type experimental data, which comprises the following steps of carrying out a node plate flexural bearing capacity test on a test component of a steel tube insertion plate, and determining main factors influencing K-type node bearing capacity; establishing an influence model of each factor on the bearing capacity of each K-shaped node; fitting finite element results in each influence model, and establishing a suggestion model for calculating the bearing capacity of each K-type node; substituting each factor parameter of the K-shaped node connected with a steel pipe plugboard to be evaluated into a suggestion model to obtain the ultimate main pipe bearing capacity value of the K-shaped node connected with the steel pipe plugboard. The bearing capacity calculation model of each K-shaped node connected with the annular reinforcing plate steel pipe inserting plate is obtained through the energy principle, the mutual relationship among the main pipe axial force, the main pipe wall bending moment and the shearing force is reflected, the ultimate bearing capacity of each K-shaped node can be accurately evaluated, and the deviation between the ultimate bearing capacity and the test result is small.

The invention provides an energy management method considering a random forecast error of an independent microgrid. The independent microgrid comprises a wind power-photovoltaic-micro gas turbine-energy storage battery and an energy management system (EMS), wherein the EMS is used for monitoring a state-of-charge (SOC) state of the energy storage battery in real time, monitoring wind power and photovoltaic actual generation power and measuring actual powers of the micro gas turbine and the energy storage battery, a random forecast error of a net load is obtained according to powers which are forecasted and actually monitored, the contribution of the controllable micro gas turbine and the energy storage battery are arranged and adjusted by a multi-variable and multi-constraint mathematicaloptimization method and a set process according to the size of the random forecast error of the net load, so that the energy storage battery normally runs. According to the method provided by the technical scheme, the unfavorable influence brought by the forecast error of the load and a regenerative energy power is overcome, the contribution of the controllable micro source and energy storage arearranged and adjusted by the mathematical optimization method according to the size of the random forecast error of the net load, and stable, reliable and economic running of the microgrid is achieved.

An acknowledgement cabinet able to be arranged in a wall between customer and bank clerk for exchanging the acknowledgement bill between customer and bank clerk is composed of at least one drawer in the drawer box, drawer pushing unit, driver unit, and guide tracks for said drawer and controller. It can also be used for other purposes.

The invention discloses a real-time scheduling method for a hybrid energy system accessing large-scale renewable energy. According to real-time running scheduling requirements of the hybrid energy system, a real-time running correction model of the cooling heating and power hybrid energy system is built on the basis of analyzing output characteristics of the renewable energy; a running scheme, established a few days ago, of the cooling heating and power hybrid energy system is corrected in real time through the real-time correction model to counteract the influence of a prediction error so asto ensure that the cooling heating and power hybrid energy system can run safely, stably, reliably and economically; based on this, a real-time running rolling optimization model of the cooling heating and power hybrid energy system is built to update planned running points of various energy supply devices at the next moment; and by executing a scheduling result of the real-time running correctionmodel and the real-time running rolling optimization model, the system can realize real-time supply and demand balance of the energy under the condition of considering a day-ahead scheduling plan.

The invention relates to a method for operating at least one precombustion chamber-fired internal combustion engine (1), in particular a stationary gas Otto cycle engine, having a pilot chamber (2) and a main combustion chamber (3) associated with the precombustion chamber (2), wherein a gas mixture is fed to the precombustion chamber (2) as flushing gas (S), wherein a synthesis gas (R) generated in a fuel reformer (4) and a fuel (B2) from a fuel source are fed to the flushing gas (S) and wherein a fuel (B1) and at least one further substance stream (D, L, A) are fed to the fuel reformer (4) for the reforming process, wherein at least one operating parameter of the at least one internal combustion engine is monitored, wherein in accordance with a change in the at least one operating parameter the chemical composition of the flushing gas (S); is modified by changing the mass stream of the at least one further substance stream (D, L, A).

The invention belongs to the new area of electric magnetic application. The motor consists of the abnormal shape stator and rotator, the transducer/ controller and the magnetic short path system with large and small teeth. The stator and the rotator under the electrified phase possesses equal tooth space while under the non-electrified phase possesses unequal tooth space. Controlling timely the electrifying time of the electrified phase or the current magnitude produces the magnetic resistance rotary moment. Thus, the motor will rotate under the defined speed, rotary moment and various running states of direction changing, braking, and electrical motioning or generating. The motor possesses the advantages of simple structure, easy to control and saving consumption greatly. The invention suits to use in the oil-field tube-type pump mechanical oil drawing, the water wheel generator and other technique area with low speed and large rotary moment.

The invention discloses a smoke processing device matched with a household garbage incinerator, and the device comprises a residual heat boiler heat energy recycling and temperature reducing device, a smoke desulfuration device, an active carbon adsorption device and a high-temperature cloth bag dust-removing device which are arranged sequentially from left to right, wherein the residual heat boiler heat energy recycling and temperature reducing device comprises a residual heat boiler and a deacidification tower; the residual boiler is provided with a smoke inlet and a smoke outlet; the smoke outlet is connected with a deacidification tower smoke inlet through a first smoke pipeline; the deacidification tower is provided with a deacidification tower smoke outlet; the high-temperature cloth bag dust-removing device is a cloth bag dust-removing device; the cloth bag dust-removing device is connected with the deacidification tower smoke outlet through a second flue; a pipeline connected with the deacidification tower smoke outlet is provided with an active carbon feeding device; the cloth bag dust-removing device comprises a plurality of dust-removing chambers which are connected in series; ash discharging buckets are arranged at the lower parts of the dust-removing chambers; ash discharging spiral machines are arranged at the lower parts of the ash discharging buckets; an evacuation flue is arranged at the upper part of the dust-removing device; and the cloth bag dust-removing device is provided with a cloth bag dust-removing device smoke discharging pipe.

The invention discloses a full-sealed insulation chain plate conveyor used in a high-temperature environment. The conveyor comprises insulation doors 1, a support frame 2, extension rails 3, driving chains 4, an outer-layer insulation shell 5, an inner-layer insulation shell 6 and conveying chain plates 7, wherein the insulation doors 1 and the outer-layer insulation shell 5 form a full-sealed outer-layer protection shell; openings are formed in the inner-layer insulation shell 6; the conveying chain plates 7 are positioned in the inner-layer insulation shell 6; the conveying chains 4 are positioned between the inner-layer insulation shell 6 and the outer-layer insulation shell 5, and are connected with the conveying chain plates 7 through the openings in the inner-layer insulation shell 6; the conveying chains 4 are limited in groove bodies of the extension rails 3, and roll to advance in the groove bodies of the extension rails 3 in the groove direction; and the extension rails 3 are supported on the support frame 2. The full-sealed insulation chain plate conveyor is unique in structure, reasonable in layout, convenient for use, easy to operate, low in investment cost, reliable in operation, high in conveying efficiency and capable of continuously working under high temperature of 850 DEG C.

The invention relates to the technical field of household appliances, in particular to a dish-washing machine slag-water separation device and a dish-washing machine. The slag-water separation deviceof the dish-washing machine comprises a pipe body, wherein the pipe body is provided with a feed port connected with a discharge port, a waste liquid port for discharging waste liquid and a waste residue channel for discharging waste residues; a filter screen cylinder installed in the pipe body and communicated with the feeding port of the pipe body and forming a gap channel allowing waste liquidto pass through between the filter screen cylinder and the inner wall of the pipe body, wherein a plurality of filter screen openings communicated with the gap channel and the interior of the filter screen cylinder are formed in the filter screen cylinder, and the gap channel is communicated with the waste liquid opening; and a waste residue conveying member and a driving device, wherein the wasteresidue conveying piece is movably arranged in the filter screen cylinder, under driving of a driving device, the slag is conveyed to the waste residue channel, waste liquid and waste residues are separated and discharged, convenience is brought to cleaning and subsequent use of the dish-washing machine, meanwhile, the separated waste liquid and waste residues are directly discharged through thewaste liquid opening in the pipe body and the waste residue channel, and the problem of waste residue scattering and leaking is avoided.

The invention relates to an automatic dust removing control method for a variable frequency multi-connected outdoor unit. The automatic dust removing control method comprises the following steps that(1) when an outdoor fan operates, changes of the rotating speed Fr and current Fi and cumulative running time Ft of the fan are detected; (2) when any one of the following three conditions is met, thestep (4) is executed, and the outdoor fan starts to be put into dust removing operation: (a) the fan current Fi is greater than a first set current value I1 of the fan current, and the cumulative running time Ft of the fan is greater than X hours; (b) the fan current Fi is greater than a second set current value I2, smaller than I1, of the fan current, and the cumulative running time Ft of the fan is greater than Y hours, wherein Y is greater than X; (c) the fan current Fi is greater than a third set current value I3, smaller than I2, of the fan current, and the cumulative running time Ft ofthe fan is greater than Z hours, wherein Z is greater than Y; (3) if the conditions of the step (2) are not satisfied, the dust removing operation is not performed and the step (2) is execute again; and (4) dust removing operation is performed, and is exited after 3 minutes. According to the automatic dust removing control method for the variable frequency multi-connected outdoor unit, the automatic dust removing is realized through the detection of parameters such as the running current of the outdoor fan, and the stable operation of the outdoor machine system is ensured.

The invention discloses a method for calculating the bearing capacity of a main pipe of a data node of an ultra-high voltage transmission tower true-type test, and the method comprises the following steps: carrying out the K-type node bearing capacity test of a test component of a steel pipe plugboard, and determining main factors affecting the bearing capacity of a K-type node; establishing an influence model of each factor on the bearing capacity of the K-shaped node; fitting finite element results in each influence model, and establishing a suggestion model for calculating the bearing capacity of the K-type node; substituting each factor parameter of the K-shaped node connected with the steel pipe plugboard to be evaluated into the suggestion model to obtain the ultimate main pipe bearing capacity value of the K-shaped node connected with the steel pipe plugboard. According to the method, the bearing capacity calculation model of the K-shaped node connected with the annular reinforcing plate steel pipe inserting plate is obtained through the energy principle, the mutual relation among the main pipe axial force, the main pipe wall bending moment and the shearing force is reflected, the ultimate bearing capacity of the K-shaped node can be accurately evaluated, and the deviation between the ultimate bearing capacity and the test result is small.

The invention relates to a method and a system for correcting an SVG control strategy based on a BP neural network. The method comprises the following steps: collecting active and reactive values of anew energy power station grid-connected point and active and reactive values of a new energy power station assessment point; training a BP neural network model by taking the active value and the reactive value of the new energy power station grid-connected point as input and taking the active value and the reactive value of the new energy power station assessment point as output; collecting the active real-time value and the reactive real-time value of the current grid-connected point, and calculating the active value and the reactive value of the assessment point through the final BP neuralnetwork model; and taking the obtained active value and reactive value of the assessment point as control parameters of SVG to realize optimization of reactive control and power factor control. According to the method and the system, the reasonable utilization rate of the SVG by the new energy power station can be improved, the off-grid reactive assessment rate of the new energy power station canbe reduced, and the method and the system are of great significance to safe, stable, economical and reliable operation of the new energy power station and the power grid.

The invention discloses a multi-target unit maintenance double-layer optimization method and system considering unit combination, and belongs to the technical field of power system optimization. Comprising the following steps: acquiring unit power generation cost data, unit maintenance data and daily power utilization load data in a to-be-optimized power system; substituting the data into the multi-target unit maintenance double-layer optimization model considering the unit combination to obtain a multi-target unit maintenance double-layer optimization model considering the unit combination corresponding to the to-be-optimized power system; and solving the multi-target unit maintenance double-layer optimization model to obtain the optimal unit combination, unit maintenance variable, unit output and node electricity price of the to-be-optimized power system. According to the method, the multi-target unit maintenance double-layer optimization model considering the unit combination is established, the total cost of the electric power system, the reliability of the electric power system and the node electricity price fluctuation are comprehensively considered, economical and reliable operation of the electric power system is achieved, and meanwhile the risk brought by the node electricity price fluctuation to the electric power market is reduced.

The invention belongs to the technical field of water treatment, and particularly relates to a high-power coupling concentration device. The high-power coupling concentration device comprises a forward osmosis component, a homogeneous membrane electrodialysis component and a reverse osmosis component, and is characterized in that an inlet of the forward osmosis component is connected with a stocksolution output port divided into two outlets through the forward osmosis component, and a first-path concentrated solution discharge system and a second-path dilute brine outlet are connected with aninlet of the homogeneous membrane electrodialysis component; an outlet of the homogeneous membrane electrodialysis component is divided into two paths, a first-path strong brine outlet is connected with the inlet of the forward osmosis component, and a second-path light brine outlet is connected with an inlet of the reverse osmosis component; and the reverse osmosis outlet is divided into two paths, a first-path concentrated solution outlet is connected with the inlet of the homogeneous membrane electrodialysis component, and a second-path fresh water outlet is discharged out of the system and recycled. The device has the advantages that the risks of scaling, deterioration and the like caused by high temperature, high pressure, electric field and the like in the concentration process aresolved, and long-term stable, economical and reliable operation can be realized.

The invention relates to a method and device for measuring and calculating the heat leakage of the intermediate joint of a superconducting cable.Surface heat flux of an outer container is collected from the left side face to the right side face of the outer container in a low-temperature constant-temperature container along the outer circumference of the outer container in the axis direction of the outer container, and surface heat flux of the left side face and the right side face of the outer container is collected; from one end of a flexible heat insulation pipe to the other end of the flexible heat insulation pipe, the surface heat flux of the flexible heat insulation pipe is collected along the outer circumference of the flexible heat insulation pipe in the axis direction of the flexible heat insulation pipe; based on an outer container heat leakage calculation model, the total heat leakage of the intermediate joint of the superconducting cable is obtained; and the heat leakage amount of the heat insulation pipe is obtained based on a heat insulation pipe heat leakage amount calculation model. Measurement and calculation of the heat leakage of the outer container and the heat insulation pipe of the intermediate joint of the superconducting cable are achieved, the total heat leakage of the intermediate joint and the heat leakage of the heat insulation pipe of the superconducting cable are obtained, and data support is provided for manufacturing of the intermediate joint of the superconducting cable and the heat insulation pipe based on heat leakage data.

The invention provides a river channel type automatic water temperature monitoring device and method suitable for complex water flow conditions, the device comprises a floral tube with the upper end and the lower end closed, the floral tube is fixed on a river channel bank slope through a fixing frame, a buoy body is arranged in the floral tube, a temperature probe is arranged at the bottom of the buoy body, and a temperature acquisition instrument is arranged at the upper end of the floral tube. The temperature probe is connected with a temperature acquisition instrument through a cable, the lower end of the floral tube is provided with a through hole for the temperature probe to penetrate out, and the upper end of the floral tube is provided with a wire hole for the cable to penetrate out. The device and the method can be suitable for water temperature monitoring of seasonal rivers or water areas with large water level amplitude variation and high water flow velocity at tail water outlets of power stations, can be installed and overhauled at any time, and are wide in application range.

The hydraulic system generating electricity by comprehensively utilizing bioenergy and wind energy is a closed hydraulic system and comprises a large windmill F, a speed increasing gearbox CI, a speedreduction gearbox CII, a first hydraulic pump PI, a second hydraulic pump PII, a biomass turbine G, a third hydraulic pump PIII, a fourth hydraulic pump PIV, a hydraulic motor MI, a generator DI, a fifth hydraulic pump PV, an incremental encoder, a PLC controller, a hydraulic oil tank, a filter, an energy accumulator and corresponding connectors. The first hydraulic pump PI and the third hydraulic pump PIII together supply oil to the hydraulic motor MI so as to drive the hydraulic motor MI to drive the generator set DI to generate electricity. During operation, the rotational speed of the generator DI is detected by the PLC controller in real time through the incremental encoder, and the displacement of the third hydraulic pump PIII is adjusted by the PLC controller in real time accordingto the detected rotational speed of the generator DI, so that the randomness and uncertainty when the large windmill F drives the first hydraulic pump PI to provide flow are offset.