37results about How to "Mentioned stability" patented technology

The invention discloses a small ball head tool single-turntable polishing machining device and tool setting method and relates to a small ball head tool single-turntable polishing machining device, centering adjustment and tool setting method for a tool relative to a turntable and a tool setting method for the tool relative to a workpiece. The problems that high-precision tool setting is difficult for machining a small-sized part through a machine tool in the prior art, the tool setting time is very long to adjust the position of a polishing tool head through a mechanical method and the tool setting efficiency is low are solved. The small ball head tool single-turntable polishing machining device comprises a horizontal table, a workpiece spindle, a first charge coupled device (CCD) camera, a small ball head polishing tool, a polishing tool spindle, a spindle clamping member, a bevel angle fixing base, a centering adjustment displacement table, the turntable, a connecting plate, a V-direction pin roller guiding rail, a U-direction pin roller guiding rail, a U-direction adjusting micrometer head, a V-direction adjusting micrometer head, a second CCD camera and two enlarging lenses. The small ball head tool single-turntable polishing machining device is used for setting the tool of the machine tool for the small-sized part.

The invention provides a selective hydrogenation method for pyrolysis gasoline. A single-stage adiabatic fixed-bed reactor is adopted, and the reactor is provided with a Pd-Mo-based hydrogenation catalyst. The hydrogenation process conditions are as follows: reaction temperature 30-120 DEG C, reaction pressure 2-6 MPa, airspeed 0.5-4h-1, hydrogen-to-oil volume ratio (100-600):1. One part of the hydrogenation product is used as the inner cycle of a one-stage hydrogenation reaction, and the other part is sent to a second-stage hydrogenation reactor for hydrorefining. The catalyst having a specific crystal form prepared by using a nickel-containing alumina carrier in the invention can greatly improve the dispersion and utilization rate of active metals, and the addition of selected auxiliaryactive components which are added plays a synergistic role to improve the hydrogenation activity and stability of the catalyst.

The invention provides a bonsai of trees and rocks as well as manufacturing and cultivation methods of the bonsai of trees and rocks. The bonsai is characterized in that a rock gap is formed through splicing a long-sheet rock and a short-sheet rock, or a rock groove is formed in the side face of long-sheet rock by adopting a cutting manner of a chiseling manner and is used as a growth gap of a root system of a bonsai tree; culture soil fills the gap; the technical difficulty that the bonsai tree cannot be planted on hard rocks without holes all the time is effectively solved; the culture soil fills the rock gap or the rock groove and a pot body, and a cement gum layer is formed on the outer side of the rock gap or the rock groove; the cement gum layer can be used for protecting the soil and also has very good water permeability and air permeability performances and water accumulation performance; and furthermore, moss plants are laid and planted on the outer surface of the cement gum layer and the outer surface of the culture soil in the pot body respectively, so that the water loss and soil erosion problem caused by the fact that the bonsai cannot resist drought and is watered is effectively solved and the survival rate of the bonsai tree is extremely improved.

The invention provides a solid oxide fuel battery, comprising a cathode layer, an electrolyte layer, an inner anode layer and an outer anode layer, wherein the electrolyte layer is compounded on the cathode layer; the inner anode layer is compounded on the electrolyte layer; the outer anode layer is compounded on the inner anode layer; and the oxygen ion conductor material content of the inner anode layer is higher than that of the outer anode layer. The internal strength of the electrode is lower than the interface bonding strength of electrodes and electrolyte, and the outer anode layer generates cracks preferentially under the action of stress and releases stress, so that the effects of stress buffering and protecting interface bonding of the electrodes and the electrolyte are achieved. The electrode is of a three-dimensional porous structure, and the influence of the cracks in the electrode on the performance of the battery is obviously weaker than that of interface cracks, so that the stability of the battery is improved. In addition, the inner anode layer and the outer anode layer provided by the invention can be sintered together, so that the preparation process is simpler.

The invention discloses toltrazuril inclusion compound lyophilized powder. The toltrazuril inclusion compound lyophilized powder is obtained by adopting sulfobutyl ether-beta-cyclodextrin to perform inclusion on toltrazuril and then carrying out a lyophilization process. A preparation method of the toltrazuril inclusion compound lyophilized powder concretely comprises the following steps: dissolving the toltrazuril by an organic solvent to obtain an organic solution of the toltrazuril; adding the organic solution of the toltrazuril into an aqueous solution of the sulfobutyl ether-beta-cyclodextrin, and magnetically stirring for carrying out a reaction; carrying out rotary evaporation on the materials obtained after the reaction so as to remove the organic solvent, then filtering by using amicrofiltration membrane and drying to obtain a toltrazuril inclusion compound; carrying out the lyophilization process to obtain the toltrazuril inclusion compound lyophilized powder. According to the preparation method, the sulfobutyl ether-beta-cyclodextrin is adopted to perform inclusion on the toltrazuril, so that the solubility of the indissolvable drug-the toltrazuril is improved; by adopting the lyophilization process, the stability and bioavailability of the toltrazuril are improved; the toltrazuril inclusion compound lyophilized powder enriches the preparations of antiparasitic drugs.

The invention relates to an insert bolt using a bushing and a manufacturing method of the bushing. In order to stably assemble the bolt, the bushing is clamped in a groove where the base metal bolt is connected, and the embedded bushing can play a role in guiding the connection position of the bolt, thus improving accuracy and stability. Besides, the bushing can be fixed on the base metal by using an outer side projection arranged on the outer side face of the bushing, and the bolt can be prevented from separating from the bushing by using an inner side projection arranged on the inner side face of the bushing.

The invention relates to the active power control field for a flexible load control system in regional energy Internet and discloses an active power unbalance adjustment method in a flexible load control system. The method comprises steps: when the total active power shortage of a regional power grid is larger than zero, the power generation power of the regional power grid is added; the power consumption power of a flexible load in the regional power grid is reduced, if the active power is still unbalanced, a switchable load can be cut off; when the total active power shortage of the regional power grid is smaller than zero, the power consumption power of the switchable load is added, if the active power is still unbalanced, the power consumption power of the flexible load in the regional power grid can be added; and the power generation power of the regional power grid is reduced, wherein the total active power shortage is the difference between the total active load sum of the regional power grid and planned power consumption of the regional power grid. The method solves problems of poor user experience for the regional power grid and the system stability.

The invention provides a selective hydrogenation method. According to the selective hydrogenation method, a fixed bed reactor is utilized, a Pd-Ag series hydrogenation catalyst is put into the reactor, and pyrolysis gasoline and hydrogen enter the reactor after being mixed and preheated; the hydrogenation technological conditions are that a reaction temperature is 30 to 120 DEG C, reaction pressure is 2 to 6MPa, a space velocity is 0.5 to 4h<-1>, and a volume ration of hydrogen to oil is (100 to 600) to 1; one part of a hydrogenated product serve as internal circulation of a one-stage hydrogenation reaction, and the other part of the hydrogenated product is sent into a two-stage hydrogenation reactor to be hydrogenated and refined. By means of the catalyst which is prepared from the specific crystal form nickel-containing aluminum oxide carrier prepared by the selective hydrogenation method disclosed by the invention, dispersity and a utilization rate of reactive metal are greatly improved; meanwhile, selected activity assisting ingredients are added to achieve a synergistic effect, and hydrogenation performance and selectivity of the catalyst are improved.

The invention discloses a marking machine sliding positioning marking device for gas discharge tube machining, and relates to the field of marking devices. The marking machine sliding positioning marking device comprises a device main body, and two first motors are arranged on the outer surface of the device main body. According to the marking machine sliding positioning marking device, by arranging the first motors, rotating shafts, gears, sliding blocks, sliding grooves and a rack, due to the fact that a user puts three gas discharge tubes into three placement cylinders, after marking is carried out on the gas discharge tube in one placement cylinder, the user starts the first motors through an operation table, the first motors work to drive the rotating shafts to rotate, the rotating shafts rotate to drive the gears to rotate, due to the fact that the gears mesh with the rack, the gear can drive the rack to move in the rotating process and drive supporting rods to move at the same time, the supporting rods move to drive the sliding blocks to slide in the sliding grooves, then the corresponding placement cylinder is driven to move, another placement cylinder with one gas discharge tube can conveniently and rapidly move to the position under a marking carbon head, and then the marking carbon head can extend into the corresponding gas discharge tube and carry out marking on theinner wall of the corresponding gas discharge tube.

The invention provides a folding car cover, which relates to the technical field of car covers. The folding car cover comprises a winding mechanism, a lantern ring and a cover cloth, wherein the winding mechanism comprises a support, a winding shaft, a guide strip and a coil spring; the lantern ring is fixed on the bottom surface of the cover cloth; the winding shaft is rotationally supported on the support; the guide strip is wound on the external side of the winding shaft in a circumferential direction of the winding shaft; the guide strip is threaded in the lantern ring; one end of the guide strip is connected with the winding shaft or the coil spring; the other end of the guide strip is connected with the cover cloth; the coil spring sleeves the winding shaft and is used for driving the winding shaft to rotate so that the guide strip is rewound; the inner end of the coil spring is connected with the winding shaft; and the outer end of the coil spring is connected with the support. The folding car cover provided by the invention is advantaged in that the folding car cover is convenient in use and simply structured, the cover cloth can be rapidly wound, the folding car cover is convenient to fold, and the folding car cover is practical.

The invention discloses a positioning device for box body limiting hole machining. The positioning device comprises a positioning placement base; a positioning support base is connected to the positioning placement base; the bottom end of a positioning linkage base is provided with two linkage base abutting columns which are symmetrically arranged; a positioning downward-pressing base is further arranged in an area between the positioning support base and the positioning linkage base; a downward-pressing base arc-shaped opening used for receding a support base connecting rod is arranged on thepositioning downward-pressing base; and a downward-pressing base abutting groove is provided with an abutting groove deep position part and an abutting groove shallow position part; the groove depthfrom the abutting groove shallow position part to the abutting groove deep position part is gradually deepened in the circumferential direction of the positioning down-pressing base; and a positioningdriving assembly for driving the positioning down-pressing base to rotate is further mounted on the positioning placement base. Through the arrangement of the positioning support base and the positioning down-pressing base and the cooperation of the down-pressing base abutting groove and the linkage base abutting column, stable positioning work can be conducted on the circumferential position ofa to-be-machined workpiece, and subsequent precise punching operation can be conducted.

The invention discloses a preparation method and application of cubic FeOOH or Fe4(Fe(CN)6)3 loaded on a nanocarbon ribbon. The preparation method comprises the following steps: selecting ion exchangeresin as a carbon source, and mixing with ferrous chloride; adding deionized water, then stirring at room temperature, filtering and performing vacuum drying to remove moisture, so that ion exchangeresin after Fe is exchanged is obtained; smashing the ion exchange resin and putting the smashed ion exchange resin into a quartz boat, mixing with sodium carbonate in a certain proportion, then putting into a tubular furnace, in a N2 atmosphere, firstly performing preheating on the tubular furnace, and then pushing the quartz boat to a heating central position to be heated, so that a carbon ribbon loaded with the cubic FeOOH or Fe4(Fe(CN)6)3 is obtained; and finally performing grinding, acid pickling, washing, ethanol centrifugal washing and vacuum drying, so that impurities of the carbon ribbon are removed. The preparation method disclosed by the invention is green and simple, and the prepared carbon ribbon can improve performance of a lithium-air battery.