1048results about How to "Improve delivery capacity" patented technology

The invention provides a dynamic reactive power reserve optimization method for improving transient voltage stability of an alternating-current and direct-current power grid. The method comprises the steps of determining a key fault set and a key node set which influence the transient voltage stability of a power system, and sequentially ranking nodes; adjusting reactive power output of dynamic reactive power compensation equipment and calculating the trajectory sensitivity of the dynamic reactive power compensation equipment; ranking m dynamic reactive power compensation equipment and calculating the weight coefficients of the nodes in the dynamic reactive power compensation equipment; calculating the capacities of the dynamic reactive power compensation equipment, establishing a dynamic reactive power reserve optimization model and solving the dynamic reactive power reserve optimization model. The dynamic reactive power reserve optimization method for improving the transient voltage stability of the alternating-current and direct-current power grid provides auxiliary decision-making support for improving the transient voltage stability of the multi-direct-current-drop-point power grid, and has great importance in improving the allowance of the transient voltage stability of the large-scale alternating-current and direct-current power grid, establishing a smooth power transmission passage between a transmitting end and a receiving end, improving the transmission capacity of the alternating-current and direct-current power transmission passage and improving the operation economy and the power quality of the power grid.

The object of the present invention is to provide a method for producing a toner which includes ejecting a toner composition fluid containing a toner composition which contains a toner and a colorant, from a nozzle vibrated at a constant frequency to make the toner composition fluid into droplets, and solidifying the droplets to be made into particles, in which the toner composition fluid comprises a toner composition, and the toner composition contains a resin, and a colorant.

The invention belongs to the field of oil transportation, and particularly relates to a crude oil viscosity-breaking pour-point depressant composition, and a preparation method and application thereof. At the temperature of higher than plasticizing temperature of organic pour-point depressant, 0-3% by mass of coupling agent, 0-10% by mass of high-molecular processing assistant, and the balance ofinorganic pour-point depressant and organic pour-point depressant are melted, uniformly mixed and granulated to obtain the crude oil viscosity-breaking pour-point depressant composition. The crude oil viscosity-breaking pour-point depressant composition is uniformly dispersed in a liquid dispersion medium, and proportionally injected into crude oil, so that the crude oil can be transported. The inorganic pour-point depressant and organic pour-point depressant in the crude oil viscosity-breaking pour-point depressant composition have a synergetic effect, and can effectively lower the solidifying point and viscosity of the waxy crude oil, so that the crude oil has favorable fluidity at low temperature and favorable rheologic timeliness, thereby enhancing the crude oil transportation efficiency and safety level and lowering the transportation cost.

The invention relates to a combined type heat exchange unit. The combined type heat exchange unit is characterized in that a compression heat pump, an absorption heat pump, more than one water-water heat exchanger and connecting pipelines are included; the connecting pipelines are divided into the primary side pipeline and the secondary side pipeline; the primary side pipeline is in a step-by-step series connection, namely the primary side pipeline is sequentially communicated with a generator of the absorption heat pump, the water-water heat exchanger, an evaporator of the absorption heat pump and an evaporator of the compression heat pump; the secondary side pipeline is communicated to a heat consumer in the mode of first parallel connection and then series connection or step-by-step series connection or independent separating connection. According to the combined type heat exchange unit, the heat of primary network hot water can be utilized in a gradient mode, so that the temperature difference of water supply and water return of primary network hot water of a centralized heating system is greatly increased. Accordingly, the initial investment of a pipeline system and the power consumption of water pump operation can be greatly reduced, conditions are created for utilizing low-grade heat energy and even waste heat and the like of a power source, the comprehensive energy utilization efficiency of the system is improved, and the heat supply cost is lowered.

The invention provides a dynamic reactive standby optimization method for increasing the safety level of direct current commutation. The method includes the following steps that a key fault set and a key direct current inversion side converter station node set affecting the safety level of direct current commutation are determined, and all key direct current inversion side converter station nodes are sequenced; reactive output of generators is adjusted, and the reactive voltage control sensitivity of the generators is calculated; the m generators are sequenced, and the weight coefficient of the generators is calculated; reactive standby capacities of the generators are calculated, and a dynamic reactive standby optimization model is established and solved. The dynamic reactive equipment standby capacities are reasonably set, and the safety level of direct current commutation can be effectively increased; the dynamic characteristic of a system is considered in detail, the dynamic reactive compensation equipment standby capacities can be determined more accurately, and a basis is provided for optimization operation of a power grid.

The invention discloses a direct-current power flow controller for a multiport flexible direct-current power transmission system and a control method. The direct-current power flow controller comprises two adjustable voltage sources which are respectively connected in two adjacent power transmission lines in series, wherein two by-pass switches are respectively in parallel connection with the two adjustable voltage sources, and four switch tubes and four diodes are distributed on two sides of an inductor after being connected in series. Current of the power transmission line where a certain adjustable voltage source is located is acquired and subtracted from a given current reference value and then is subtracted from acquired voltage of the adjustable voltage source after a PI link and a delay link, PWM drive signals of the switch tubes are obtained by performing the PI link on a difference value, and turning-on and turning-off of the switch tubes are controlled to enable the current of the power transmission line where the adjustable voltage source to serve as a given reference value. The direct-current power flow controller is simple in circuit structure, is provided with few switch devices and does not need an isolation transformer and an external power supply.

The invention relates to a preparation method of multi-element slurry used for producing synthesis gas and also relates to the multi-element slurry by adopting the method. The method comprises the steps as follows: material containing carbon and hydrogen, additive, pH regulator and fluxing agent are adjusted by given values; all material feeding lines are provided with a detecting and measuring device respectively so as to carry out the online detection of the material feeding quantity, send the detected signals to a control system and reset all material feeding quantities in combination with characteristics such as consistency, composition and the like of the grinder slurry till the prepared slurry meets the requirement of a synthesis gas production system. The multi-element slurry prepared by the method achieves the conditions of 58-70wt% of consistency of fixed matter, less than 1500mPa.s of viscosity, less than 200 mesh of granularity and 30-60wt% of grains, the quality is stable, the conveying and gasifying are easy to be carried out and the method has obvious economical benefits.

The invention relates to the technical field of wire processing, and in particular to a fine wire guiding device. The fine wire guiding device can realize guided conveyance of a fine wire, enlarge the conveying fore of the wire, and ensure sequential and stable conveyance. A slot space is formed in a base, vertical guide rods are mounted on two sides of the upper end in the slot space, an upper plate, a lower plate and intermediate connecting rods which connect the upper plate with the lower plate sleeve the vertical guide rods, a spring sleeves each intermediate connecting rod, a threaded hole is formed in the middle of the upper plate, a screw is mounted in the threaded hole, an upper guiding base is mounted at the lower end of the lower plate, an upper motor is mounted on the upper guiding base, and an upper guiding wheel is mounted on an output shaft of the upper motor; at the lower end of the upper guiding base, a lower guiding base is mounted on the base, a lower motor is mounted on the lower guiding base, a lower guiding wheel corresponding to the upper guiding wheel is mounted on an output shaft of the lower motor, the upper motor and the lower motor are synchronously driven, and the upper guiding wheel and the lower guiding wheel are each sleeved with an annular belt.

The invention discloses a material flow device for a cane harvesting machine. The material flow device comprises an upper layer feed roller, an upper layer front conveying roller, an upper layer leaf peeling roller, an upper layer cross flow fan roller, an upper layer impurity separation roller and an upper layer rear conveying roller, which are arranged above a cane material flow channel sequentially, and a lower layer feed roller, a lower layer front conveying roller, a lower layer leaf peeling roller, a lower layer cross flow fan roller, a lower layer impurity separation roller and a lowerlayer rear conveying roller, which are arranged below the cane material flow channel sequentially. In the material flow device, the functions of feeding, conveying, leaf peeling and impurity removal are integrated to a channel device. The material flow device has the advantages of low cost, compact structure, moderate machine type, high processing efficiency, small power consumption and the like.

A complex screw-bolt extruder for dual-layer coextruding out is composed of a feeding unit able to feed different two materials, a barrel with the first feeding inlet and the second feeding inlet, the nested internal and external screw bolts in said barrel and with different rotational directions, and a common extruding head. Said two feeding inlets on said barrel are used respectively for said internal and external screw bolts.

The invention relates to an axial-feeding type rice and wheat threshing and separating integrated device which comprises a feed head (1), a longitudinal axial-flow threshing and separating drum (2), a threshing gridded cover plate (3) and a separating concave grate (4). The feed head (1) is arranged at the front end of the longitudinal axial-flow threshing and separating drum (2), the threshing gridded cover plate (3) is arranged on the upper side of the longitudinal axial-flow threshing and separating drum (2), the separating concave grate (4) is arranged on the lower side of the longitudinal axial-flow threshing and separating drum (2), and the threshing gridded cover plate (3) and the separating concave grate (4) encircle to form a barrel capable of accommodating the longitudinal axial-flow threshing and separating drum (2). The axial-feeding type rice and wheat threshing and separating integrated device can realize high-feed harvesting of rice or wheat, and is high in harvesting efficiency and high in threshing capacity. As the length of the longitudinal axial-flow drum is reduced effectively, straws smashed by smashing and throwing mechanism are smashed effectively and thrown uniformly, and then can be returned to fields directly after harvesting.

The invention discloses an organic water-soluble fertilizer containing alginic acid and a production method thereof. Each component in the fertilizer is in the following content: 60 g/L>= alginic acid>=20 g/L, 200 g / L>=NK2O>=100 g/L, 150 g/L>=organic>=75 g/L, 15 g/L>=B>=5 g/L, 1-5 g/L of mannitol and 1-5 g/L of betaine. The production method is as below: carrying out soaking cleaning, ultrasonic wall breaking and cutting on seaweeds; adding papain for reaction; separating and purifying seaweeds in an electric flocculation mode; and metering and packaging to obtain the finished product of the organic water-soluble fertilizer containing alginic acid. The production method provided by the invention has the advantages of simple manufacture, easy operation and high practicability. The produced alginic water-soluble fertilizer containing alginic acid has remarkable effect, especially realizes high flowering rate and fruit rate, good color, bright fruit color, good taste, drought resistance, early maturing early listing and strong immunity of fruits and vegetables, and is a pure natural green fertilizer uniting nutrition, yield increase and disease resistance in one.

The invention relates to a reactive power compensation method and a reactive power compensation system for a micro power grid. The system comprises a distributed measuring unit, a reactive power compensation control unit, a reactive power compensation unit and a communication unit. The micro power grid comprises a distributed power supply with reactive regulation output. For the micro power grid operated in an isolated network mode, the overall reactive power balance condition of the micro power grid is obtained by measuring the active and reactive power distribution conditions of each branchcircuit of the micro power grid, and a reactive power compensation device or the reactive power compensation device and the distributed power supply are subjected to reactive regulation in the micro power grid according to a specific isolated network reactive control strategy to realize the reactive power compensation of the micro power grid. The power factor of the micro power grid can be measured and corresponding reactive power compensation is performed according to the power factor when the micro power grid is operated in a grid-connected mode and in the isolated network mode.

The invention relates to a multi-shaft extruder for the continuous treatment and/or processing of bulk material, especially a powdery, granular or flocculent product, comprising a plurality of shafts (3) which are arranged in a crown-like manner in a cavity (1) of an extruder housing (2), said shafts extending parallel to the axial direction (A) of the extruder and forming an inner processing chamber (1a) inside the crown, and an outer processing chamber (1b) outside the crown. Each shaft carries a number of axially successive processing elements (4), at least part of the same being elements (4a; 4c; 4e) having a transporting effect, and with which adjacent shafts engage in a sealed manner at least in partial regions. At least one transporting endless screw element (4b; 4d; 4f) comprising at least one transporting screw thread (9, 10; 14, 15, 16; 19, 20) is placed in the region of the supply opening (21) in the extruder housing (2), and does not engage in a sealing manner in at least one partial region along the axial direction (A).

The invention discloses a flat heat radiating pipe which comprises a pipe cavity with two closed ends and a pipe wall enclosing the pipe cavity along the axial direction, wherein the pipe wall comprises arc walls positioned at two sides and a flat wall for connecting the arc walls, the pipe cavity and the pipe wall are sequentially defined as an evaporation section, a heat insulation section and a condensation section along the axial direction; the pipe cavity is internally provided with a main capillary structure and an auxiliary capillary structure, wherein the main capillary structure is in contact with the flat wall of the evaporation section or in contact with the flat walls of the evaporation section and the heat insulation section; the auxiliary capillary structure is in contact with the arc wall positioned at least one side, the pipe cavity between the main capillary structure and the auxiliary capillary structure is filled with a working medium; and a main gas channel of a heat radiating pipe has enough space so that capillary force of the flat heat radiating pipe is improved and conveying capacity of the working medium is increased, and thus heat transfer efficiency of the flat heat radiating pipe is increased. The invention also provides a manufacturing method of the flat heat radiating pipe.

The invention provides a positive pressure pneumatic conveying system and method. The positive pressure pneumatic conveying system disclosed by the invention also comprises an air flow adjusting device. The air flow adjusting device comprises an adjusting valve, an air flow adjusting element and a pipeline air supplementing device, wherein the adjusting valve is arranged on a main air inlet pipeline; the air flow adjusting element is arranged on the downstream of the adjusting valve on the main air inlet pipeline and is used for adjusting air flow passing through the air flow adjusting element according to a downstream pressure value of the adjusting valve; and the pipeline air supplementing device is matched with the air flow adjusting device to adjust the final air flow of the pipeline.The positive pressure pneumatic conveying method disclosed by the invention comprises the following steps of: charging a plurality of bin pumps; charging compressed air into an air inlet pipeline; adjusting the pipeline pressure in the air inlet pipeline by adjusting a pressure adjusting valve arranged on the air inlet pipeline; adjusting air flow passing through the air flow adjusting element bythe air flow adjusting element arranged on the air inlet pipeline according to the downstream pressure value of the adjusting valve arranged upstream; and supplementing compressed air into the conveying pipeline.

The invention relates to a novel low-temperature combined cooling, heating and power (CCHP) system based on a heat pump. Currently, no novel low-temperature CCHP system based on the heat pump with a simple structure and a reasonable design exists. The novel low-temperature CCHP system based on the heat pump comprises a high-pressure steam pipe, a steam turbine, a power generator, a condenser and a boiler connecting pipe, and is characterized by also consisting of a heating low-pressure steam pipe, a heating condensate pipe, a power plant after-heat single-effect heat pump unit, a refrigeration single-effect absorbing heat pump unit, a heat pump unit loop pipe, a loop circulating pump, a user refrigeration pipe, a cooling tower, a cooling tower water inlet pipe, a cooling tower water outlet pipe, a cooling water circulating pump, a power plant circulating cooling water pipe, a heat pump cooling tower, a cooling tower circulating pipe, a heating single-effect absorbing heat pump unit, a heating heating pipe, a heat pump circulating pipe and a user heating pipe; the heating low-pressure steam pipe is connected with the refrigeration single-effect absorbing heat pump unit; and the heating condensate pipe is connected with the power plant after-heat single-effect heat pump unit. The novel low-temperature CCHP system based on the heat pump has the advantages of reasonable structural design, energy saving, environmental friendliness and high heat utilization rate.

An article transport apparatus has a path (2) that has a first end and a second end and that extends along a plurality of article transferring locations; a plurality of article transporting vehicles (3a, 3b) that run on the path; and control means for controlling the plurality of article transporting vehicles, wherein the control means selects an article transporting vehicle (3a, 3b) for a transport operation from among the plurality of the article transporting vehicles based on transport request data which specifies an article transferring location for collecting and an article transferring location for delivering from among the plurality of article transferring locations (1a-1e), and runs the selected article transporting vehicle for the transport operation to the article transferring location for collecting and to the article transferring location for delivering and wherein when the transport request data currently processed and the transport request data previously processed specify a same article transferring location for collecting, and the article transporting vehicle (3a, 3b) that was selected based on the transport request data previously processed is currently performing a transport operation, then the control means selects an article transporting vehicle that is not currently performing a transport operation as the article transporting vehicle for a transport operation.

The present invention is one kind of excavator and one kind of sand dredging boat, and relates to underwater sand excavation. The excavator is one sand dredging balance wheel with oscillating hydraulic cylinder to drive one balance wheel and the sand dredging board on the balance wheel to rotate reciprocally and periodically for cutting sand. The sand dredging boat includes one mechanical and hydraulic driving system and one conveying chain belt on the boat, and one sand dredging balance wheel in water. The present invention is superior to available chain-bucket sand dredging boat, and has separated excavating assembly and conveying assembly, hydraulic driving, 5-10 times raised production efficiency and easy control.