59results about How to "Change load" patented technology

The invention relates to a preparing method of a metal carrier catalyst coating, wherein, the metal carrier catalyst coating which has an alloy metal high temperature treated as a substrate firstly loads a first layer alumina sol AlOOH, after drying loads a second layer Al2O3 paste, then drying and calcining to obtain a firmly coating; or loads mixed paste comprised by Al2O3 and the other metal oxide required by reaction on the dried AlOOH coat to obtain a catalyst active coat after drying and calcining; or an active coating for especial reaction is obtained by further loading paste which is the other metal oxide required by reaction on the second Al2O3 paste coat, and then drying and calcining. Then the active components are loaded on the obtained catalyst coating, after drying and calcining to prepare the metal carrier catalyst. The coating and the metal carrier of the invention are combined firmly. The invention can prepare the composite coating metal carrier catalyst based on different reaction requirement and the process and device for preparing is simple.

The invention relates to a preparation method of a visible light catalyst with a surface plasmon effect and application thereof. The active component of the visible light catalyst is a precious metal Au, and the carrier is one of TiO2, CeO2, Nb2O5, SiO2, Ta2O5, Al2O3 and ZrO2, wherein, Au accounts for 0.2-5% in mass content, and the particle size of Au particle is 2-20nm. Preparation of the catalyst consists of two steps: the first step is to prepare a carrier; the second step is to prepare an Au/TiO2 (CeO2, SiO2, Al2O3, Nb2O5, Ta2O5, ZrO2) visible light catalyst with a plasmon effect througha sol precipitation method. Au nanoparticles prepared by the method of the invention have good dispersibility, easily controllable size, high active component utilization rate, as well as the effect of high efficiency photocatalytic degradation of organic pollutants by visible light.

The invention discloses a Pd/metal-organic framework compound catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: dispersing MIL-100(Fe) in an ethanol-water mixed solution, adding polyvinylpyrrolidone and H2PdCl4 under continuous stirring, and performing reflux with an oil bath for 3 h at 90 DEG C so as to obtain the Pd/MIL-100(Fe) composite material, wherein during the process, Pd(2+) can be reduced by ethanol gradually. According to the invention, a simple and mild method for reducing precious metal by ethanol is adopted, high-dispersity precious metal Pd nano-particles grow on MIL-100(Fe) with a super-large specific area, and in the whole process, inert atmosphere, a strong reducing agent and heat treatment process are not required. The prepared Pd nano-particles are good in dispersity, and high in utilization ratio, and have the property of efficiently degrading medicines, personal care products or dyes in the water environment through photocatalysis at the room temperature.

The invention discloses a control method and system for primary frequency modulation of a thermal power generation unit. The method comprises steps as follows: frequency modulation capability parameters of a steam turbine control valve are acquired; according to the frequency modulation capability parameters of the steam turbine control valve, a control valve frequency modulation threshold value of the power generation unit in a frequency modulation range of plus-minus 11 r/min is acquired; whether grid frequency exceeds the control valve frequency modulation threshold value under current working conditions is judged; if the grid frequency exceeds the control valve frequency modulation threshold value, primary frequency modulation is performed in a mixed frequency modulation manner for controlling the opening degree of the steam turbine control valve and controlling the opening degree of a feed-water bypass; and if the grid frequency does not exceed the control valve frequency modulation threshold value, primary frequency modulation is performed in a control valve frequency modulation manner for controlling the opening degree of the steam turbine control valve. The opening degree of the feed-water bypass and the opening degree of the steam turbine control valve are controlled for simultaneous operation, the requirement for primary frequency modulation of the unit is met, the frequency modulation manners are selected according to actual conditions, the opening degree of the steam turbine control valve is involved in both manners, the requirement for the rapid response to primary frequency modulation can be met, and the problem that primary frequency modulation responding capability is reduced due to restrictions of boundary conditions in the condensation water throttling frequency modulation process is solved.

The invention discloses a preparation method for synthesizing an aniline catalyst by undergoing a hydrogenation reaction on nitrobenzene. The method comprises the following steps of: reducing a PdCl2 aqueous solution under the protection of sodium citrate by taking a NaBH4 aqueous solution as a reducing agent to obtain Pd nanoparticle sol; and mixing and stirring an ultrasonically-treated carbon nanotube in the aqueous solution with the Pd nanoparticle sol to form a Pd-carbon nanotube catalyst. The aniline catalyst shows very high activity in a reaction for synthesizing aniline through hydrogenation of nitrobenzene, and has long cycle life.

The invention provides an axle and relates to the field of automobile parts. The axle comprises a hollow column, wherein two sides of the hollow column are provided with two connecting rods in a penetrating manner; a fixed plate is fixedly arranged in the hollow column; two sides of the fixed plate are fixedly provided with reset springs; certain ends, which are far away from the fixed plate, of the reset springs are fixedly connected with connecting blocks; two sides of each connecting block are fixedly provided with pulleys; two sides of the inner wall of the hollow column are fixedly provided with a sliding rail matched with the pulleys for use; one ends, which are far away from the reset springs, of the connecting blocks are fixedly connected with the connecting rods; one ends, which are far away from the connecting block, of the connecting rods penetrate through the hollow column and extend into a hub. According to the axle, the distance between the hubs can be freely adjusted, and the load applied to the ground by an automobile body is changed, so that a phenomenon that slip happens in certain special districts is avoided, normal use of automobiles is ensured, the use limitation of the automobiles is reduced, the axle applicability is improved, and the use cost of the automobiles is saved.

The invention provides a method and a device for continuously and automatically metering irregular cans of canned goods and filling lobster sauces. The method comprises the following steps: arranging the irregular cans on an oscillating single-channel conveying belt; sending the irregular cans to the below of a feeder by a multi-channel conveying belt; fixing the irregular cans at corresponding positions thereof by a can-pressing mechanism and a can-blocking cam; filling materials by the feeder assisted by a distributing device; and conveying out the irregular cans filled with the materials by conveying belts. The device comprises a conveying device, a pressing device and a charging device, wherein the conveying device comprises the multi-channel conveying belt, the oscillating single-channel conveying belt arranged on the multi-channel conveying belt, and a separation baffle plate; the pressing device comprises the can-pressing mechanism and the can-blocking cam arranged at two ends of the charging device; and the charging device comprises a hopper, the distributing device and the feeder which are arranged from top to bottom, wherein a distributing device cylinder is arranged above the distributing device, and a plurality of measuring cups provided with bottom valves are distributed on the feeder. The method and the device achieve mechanical charging of the irregular cans, increase the labour productivity, improve the labour condition and lighten the labour intensity for workers.

The invention discloses a mining similar simulation experimental frame realizing adjustable stratum dip angle and multi-directional loading. The simulation experimental frame comprises an experimentalmaterial mounting frame, a counterforce frame and a jack, wherein the counterforce frame is mounted on the periphery of the experimental material mounting frame, and the jack is mounted on the counterforce frame to act on the experimental material mounting frame. According to the mining similar simulation experimental frame realizing adjustable stratum dip angle and multi-directional loading, with the technical scheme of the first combination of multi-directional stress and variable dip angles, moving variation of overlying rock strata in different stress states at each angle of coal seams can be simulated, experiments can be completed only by changing parameters for the coal seams under different geological conditions, movement deformation characteristics of the overlying rock strata indifferent stress environments at any angle after coal seam mining can be obtained, and experiments in various complex environments can be conducted according to working conditions, so that the simulation experimental frame is of great significance for guiding actual production.

Method for operating a drive unit for a hybrid vehicle, wherein the drive unit comprises a drive assembly (3) with an internal combustion engine (1) and an electrical machine (2) and a transmission (5) having a plurality of gearboxes (6, 7) connected between the drive assembly (3) and an output (4). The electrical machine (2) is coupled via a planetary gear unit (10) to an input shaft (8) of a first gearbox (6) and an input shaft (9) of a second gearbox (7) connected in parallel with said first gearbox (6). Therein the internal combustion engine (1) can be coupled by means of a friction-fitting decoupler (11) to the input shaft (8) of the first gearbox (6) and when the decoupler (11) is closed is coupled together with the input shaft (8) of the first gearbox (6) to the same element (15) of the planetary gear unit (10) A friction-fitting or form-fitting bypass shifting element (12) interacts with the planetary gearbox (10) in such a manner that, when the bypass shifting element (12) is engaged, a rotationally fixed connection exists between the electrical machine (2), the input shaft (8) of the first gearbox (6) and the input shaft (9) of the second gearbox (7) and thereby there is necessarily equality of rotational speed between the same, whereas when the bypass shifting element (12) is disengaged said rotationally fixed connection and said necessarily equal rotational speed for not exist. On execution of a shift under load, shortly before the engagement of an interlocking shifting element to be closed for the shift under load, the friction decoupler (11) is shifted to slipping mode in order to decouple the inertial mass of the internal combustion engine (1).

The invention relates to a method for limiting structural loads in a wind turbine in situations where the power produced by the wind turbine is increased or decreased. The limitation of structural loads is achieved by restricting the power ramp rate, i.e. the rate of change of increases or decreases in produced power. The restriction is only invoked if a maximum change of the produced power or the corresponding internal power reference within a time window exceeds a given threshold.

The invention relates to the technical field of manufacturing of turbine blades, particularly to a blade with a small wing rib blade tip and a turbine utilizing the blade. The blade is characterized in that the blade tip of the blade is provided with a pressure side small wing and/or a suction force side small wing, wherein the pressure side small wing is positioned on the pressure side surface of the blade; and the suction force side small wing is positioned on the suction force side surface of the blade. The turbine comprises a hub and the blade with the small wing rib blade tip, wherein the blade with the small wing rib blade tip is fixed to the hub. The blade has the characteristics that leakage flow of the blade tip is reduced, loss, caused by a leakage vortex and an upper channel vortex, in a blade grid is reduced, and finally, the efficiency of an impeller mechanism is improved.

The invention discloses a trackless highway train structure. The trackless highway train structure comprises two end train pairs and several middle train pairs, wherein the end train pairs are symmetrically arranged at the two ends of a train, each end train pair is constituted by a head train carriage and a middle train carriage, each head train carriage is connected with the corresponding middletrain carriage through an upper capstan and a lower capstan, and a forward locking structure is arranged at the junction of each head train carriage and the corresponding middle train carriage, eachmiddle train pair is composed of two middle train carriages, every two middle train carriages are connected through upper capstans and lower capstans, and the middle train pairs are located between the end train pairs; the head train carriages and the middle train carriages are all of a single axle structure, the axle of each head train carriage is a steering axle and is provided with a forward locking mechanism, and the axle of each middle train axle is a driving axle or a supporting axle; the end train pairs and the middle train pairs and every adjacent middle train pairs are connected through single capstans. By means of the trackless highway train structure, the defects that an existing highway train structure has a complicated steering process, and the driving difficulty is large areovercome.

The invention provides a solid material thermal diffusion coefficient measuring device and a measuring method thereof, and relates to the technical field of measurement of thermal physical property of solid materials. The solid material thermal diffusion coefficient measuring device comprises a heating device, a loading device, an infrared detector, a computer control and collecting system, a stepped motor control system and a pressure display device, wherein the loading device is arranged just above the heating device, and is provided with a support plate, a force applying plate, connecting pieces, testing holes and pressure sensors; the loading device is provided with at least three connecting pieces which are symmetrically distributed, the upper end of each connecting piece is fixedly connected with the force applying plate, and the lower end of each connecting piece is fixedly connected with the support plate; each pressure sensor is arranged at the bottom part of the corresponding connecting piece, and the testing holes are respectively formed in the centers of the force applying plate and the support plate; the infrared detector is arranged just above the loading device; the signal input end of the computer control and collecting system is connected with the signal output end of the infrared detector; the signal input end of the pressure display device is electrically connected with the signal output end of each pressure sensor.

The invention discloses a telescopically adjustable cargo tray, and belongs to the technical field of cargo trays. The telescopically adjustable cargo tray comprises a tray body and a plurality of support plates supported at the bottom of the tray body, wherein the tray body comprises a front tray body and a rear tray body, and the front tray body and the rear tray body are connected through a telescopic connecting piece; the supporting plate comprises a front supporting plate and a rear supporting plate, a cavity with an opening in one side is formed in the front supporting plate, sliding chutes are formed in upper ends and lower ends of two side walls of the cavity, one end of the rear supporting plate is connected to the sliding chutes in the cavity, the other end of the rear supportingplate is provided with a supporting leg, and clamping blocks for clamping the rear supporting plate are arranged on two ends of the sliding chutes; and the front tray body is fixed on the front supporting plate, and the rear tray body is fixed on the rear supporting plate. In the telescopically adjustable cargo tray disclosed by the invention, the rear supporting plate is connected to the slidingchutes in the cavity with the opening in one side of the front supporting plate in a sliding mode and matched with the telescopic connecting piece, and therefore the size of the tray can be changed.

The invention provides an operational control method of air conditioning equipment, air conditioning equipment and a storage medium. The operational control method of the air conditioning equipment comprises the steps that target air supply temperature of the air conditioning equipment is obtained; a target opening corresponding to a water valve is determined according to the target air supply temperature, and an opening of the water valve is controlled to be adjusted to the target opening; and the operational frequency of a chilled water pump is adjusted according to the target opening. The communication connection between a tail end control cabinet and a machine room main control cabinet is built, the target opening started at present of the water valve is sent to the machine room main control cabinet in real time, so that the main control cabinet correspondingly adjusts the operational frequency of the chilled water pump according to the current target opening of the water valve, sothat the water pump frequency of ''an upstream'' is adaptive to the water valve opening of ''a downstream'', the feedwater quantity adapts to the actual water quantity demand, the water pump iscontrolled more reasonably, and the integral operational energy efficiency of the air conditioning equipment is effectively improved.

The invention discloses a preparation method of a covalent organic framework compound and open-cage fullerene composite material. The method comprises the following steps of: performing chemical cage opening on fullerene, mixing the fullerene with a covalent organic framework, and performing ultrasonic treatment, stirring, washing, soaking and drying to obtain the covalent organic framework compound and open-cage fullerene composite material. The invention further provides application of the composite material, wherein the composite material can be used as an electrocatalyst for efficient hydrogen evolution, can solve the problem that the cost is too high due to the fact that a traditional electrocatalyst depends on precious metal, improves the catalytic activity of the electrocatalyst, can also be applied to adsorption of carbon dioxide, and has higher nitrogen doping rate and larger specific surface area and pore volume compared with traditional adsorbents, so that the material has better adsorbability, selectivity and repeatability. The method is suitable for preparing the covalent organic framework compound and open-cage fullerene composite material, and the prepared composite material can be further applied to carbon dioxide adsorption and can also be used as an electrocatalyst for efficient hydrogen evolution.