18results about How to "Simple technical solution" patented technology

This application provides an aluminum film sputtering method and an aluminum film. The aluminum film sputtering method includes a substrate cooling process, which includes the following steps: a first cooling process, in which the temperature of the substrate is cooled to 25 degrees Celsius at a first average cooling rate; and a second cooling process, in which the temperature of the substrate is cooled to a target cooling temperature at a second average cooling rate. The first average cooling rate is higher than the second average cooling rate. This application adds a programmed cooling step to the substrate, dividing the cooling into two stages by controlling the cooling rate and time. Through the two-stage aluminum film sputtering process, the aluminum film growth process is controlled. Only a single target sputtering is required to achieve the dual technical effects of reducing aluminum film roughness and controllable dielectric constant. The technical solution of this application is simple and has good technical effects.

The invention discloses a temperature control method and device, equipment and a medium, and belongs to the technical field of heat dissipation, and the method comprises the steps: obtaining the temperature of each part of a server; calculating a component temperature average value according to the temperature weighting of each component of the server; when the server temperature value is larger than a first preset value in response, a server temperature calculation control process is started; calculating the server temperature change rate according to the time and the server temperature change; calculating a linear regression slope through multiple times of time point temperature monitoring; and in response to the condition that the linear regression slope is greater than a second preset value, calculating a flow limit percentage according to the server temperature change rate, and controlling the server temperature through the flow limit percentage until the server temperature value is less than a first preset value. According to the method and the device, the flow limiting points meeting the requirements are determined, so that a complicated scheduling algorithm is avoided, the implementation difficulty of server temperature control is reduced, and meanwhile, the temperature control cost is reduced.

The utility model discloses a pressure cooker capable of assisting a floater to fall, which comprises a fixed cover, a lock cover rotationally mounted on the fixed cover, and the floater which is arranged on the lock cover in a floating manner and has an opening position and a closing position, and further comprises an assisting part mounted on the fixed cover, and the assisting part is provided with an elastic arm; the elastic arm comprises an abutting action part and an obliquely-arranged extending arm, the floater abuts against the abutting action part of the elastic arm along with rotation of the lock cover, and the extending arm is stressed to move downwards so that the abutting action part can drive the floater to be switched to the opening position. According to the pressure cooker, due to the arrangement of the power assisting part, the floater can be driven by the friction force between the floater and the elastic arm to move downwards, so that switching from the closed position to the open position is achieved, and the technical problem that the cover of the pressure cooker cannot be opened due to the fact that the floater cannot fall down is solved.

The invention provides a method for preparing ammonium phosphomolybdate from a sulfuric acid system phosphorus-containing molybdenum-vanadium mixed solution, and relates to the technical field of ammonium phosphomolybdate production. S2, adjusting pH and supplementing an ammonium source; step S3, precipitating ammonium phosphomolybdate; and S4, recovering and reusing the molybdenum and vanadium-containing solution resin. The process flow is short, the whole process is simple and easy to industrialize, three wastes are basically avoided, and the method is an efficient, green, environment-friendly and low-carbon process route.

The application relates to a preparation method of an entropy-based oxide catalyst with high metallic property and application of the entropy-based oxide catalyst in hydrogen production by acidic electrolytic water, and belongs to the field of catalysis. A water-soluble salt containing at least Ru, Ir and A is uniformly mixed, hydrolyzed and reduced under water bath stirring condition by taking zinc oxide as a carrier and a sodium borohydride solution as a reducing agent, then the black powder of the medium-entropy alloy is formed through filtration, washing and drying, and finally the black powder is subjected to rapid incomplete oxidation under the condition of 300-500 DEG C and air atmosphere, and then is subjected to acid pickling, filtration, washing and drying to prepare the entropy-based oxide catalyst with high metallic property. The catalyst contains a large amount of Ir-Ir metal bonds and / or Ir-Ru metal bonds, and the proportion can reach 30%-40%. The mismatch between the metal atom fingerprint structure and the metal-oxygen atom coordination structure causes serious lattice distortion, induces unbalanced distribution of stress and strain, and promotes the kinetics of the acidic oxygen evolution reaction.

The invention provides a seawater-corrosion-resistant cement adhesive for an extra-high voltage porcelain insulator and a preparation method of the seawater-corrosion-resistant cement adhesive. The cement adhesive comprises the following components in percentage by weight: 40-60wt% of aluminoferrite cement, 30-50wt% of artificial porcelain sand, 3-5wt% of a cement expanding agent, 0.5-5wt% of silica powder and 0.5-5wt% of silicon carbide whiskers, the sum of the components is 100%, and the cement adhesive further comprises an externally doped anti-cracking agent, a water reducing agent and a defoaming agent, the external mixing amounts of the anti-cracking agent, the water reducing agent and the defoaming agent are respectively 0.1 to 0.3 weight percent, 0.1 to 0.3 weight percent and 0.1 to 0.5 weight percent. The cement adhesive is reasonable in material selection, high in early strength and continuously increased in later strength, the prepared porcelain insulator has excellent seawater erosion resistance, and the cement adhesive has a good application prospect when being applied to the porcelain insulator with high requirements on seawater erosion resistance and seawater erosion resistance.

The portable pipeline positioning device and pipeline positioning method of the present invention, wherein the positioning device includes a main body and a circular arc steel pipe, the upper end surface of the main body is provided with a marking point and a compass, and the front end surface of the main body is provided with a bubble level. The pipeline positioning method of the present invention comprises: rotating the selected circular arc steel pipe and fitting it with the pipeline, moving the main body along the circumferential direction of the pipeline, so that the bubble of the bubble level is located directly below the marking point, and the position of the main body on the pipeline is the reference 0 point of the pipeline at this time; measuring the reference 0 point of the vertical pipeline, fitting the main body of the device with the drum front barrel, recording the direction indicated by the compass, and then rotating the selected circular arc steel pipe and fitting it with the pipeline to be inspected, moving the main body along the circumferential direction of the pipeline, so that the compass indicates the previously recorded position, and setting this position as the reference 0 point of the pipeline. The technical solution of the present invention is simple, and can quickly and accurately confirm the reference 0 point of the horizontally arranged and vertically arranged pipelines.

The utility model discloses a citrus fiber powder preparation device, and belongs to the field of natural fiber manufacturing. The device comprises a cooking and soaking barrel and a combustion assembly, a stirring motor is arranged at the top of the cooking and soaking barrel, the output end of the stirring motor is connected with stirring blades through a transmission rod, a water injection pipe and a feeding port are arranged on the side portion of the cooking and soaking barrel, the bottom of the cooking and soaking barrel is of an inverted-circular-truncated-cone-shaped structure, and a first discharging port is formed in the bottom of the cooking and soaking barrel; the combustion assembly comprises a combustion chamber, a high-temperature flue gas pipe and a discharge chamber, a flue gas inlet of the high-temperature flue gas pipe is communicated with the combustion chamber, a flue gas outlet of the high-temperature flue gas pipe is communicated with the discharge chamber, and the high-temperature flue gas pipe is wound at the lower end of the cooking and soaking barrel. The three functions of stirring and mixing, cooking and soaking can be achieved in the cooking and soaking barrel at the same time, the technical scheme is simpler, and use is more convenient.

The present invention discloses an asymmetric half-bridge flyback converter and an input voltage detection method thereof, the detection method comprising: sampling a predetermined parameter of the asymmetric half-bridge flyback converter during the conduction period of a first switch tube and performing sampling and holding to obtain a first sampling signal; sampling a predetermined parameter of the asymmetric half-bridge flyback converter during the conduction period of a second switch tube to obtain a second sampling signal; and obtaining a voltage detection signal representing input voltage information according to the first sampling signal and the second sampling signal. The present invention can realize functions such as input voltage protection or input voltage compensation without adding additional peripheral devices and control chip pins, and the technical solution is simple and the operation is convenient and flexible.

The utility model relates to an intelligent solar light following street lamp system. The system comprises a light following module, a motor, a photovoltaic panel, an energy storage unit, a second supporting rod and an LED lamp. The photovoltaic panel is used for collecting solar energy, converting the solar energy into electric energy and storing the electric energy in the energy storage unit; the light following module comprises a photoresistor, an LM358 voltage comparator and an AT89S51 single-chip microcomputer, the photoresistor can detect light of a vehicle, light signals are converted into electric signals through the LM358 voltage comparator and the AT89S51 single-chip microcomputer, the AT89S51 single-chip microcomputer enables a street lamp to be lightened and drives a motor to drive the street lamp to rotate by 0-180 degrees on a plane perpendicular to a motor shaft, and the street lamp is driven by the motor to rotate by 0-180 degrees. And when the vehicle leaves the detection area of the photoresistor, the street lamp is powered off and is reset. According to the street lamp system, green energy and an intelligent control technology are integrated, energy can be effectively saved, it is guaranteed that the vehicle can obtain effective illumination in the driving process, and the flexibility of light following detection is enhanced.

A three-axle bogie for a track engineering tractor is provided, wherein the frame is composed of two side beams, two middle beams and end beams, and multiple groups of spring slider type support devices for supporting the vehicle body are symmetrically arranged on the two side beams, and the spring slider type support device and the side block and traction rod device arranged at the bottom of the side beam form a suspension elastic support structure for the vehicle body; the axle gearboxes on the axles in the two adjacent wheel set assemblies are connected through a transmission shaft to realize the synchronous rotation of the three axle gearboxes driven by the power drive system. The present invention improves the support structure for supporting the vehicle body, and has the characteristics of high power, large adhesion weight, and large traction capacity while ensuring the low cost and safety performance of the engineering tractor. The spring slider type support device is simply and effectively combined with the side block and traction rod device, so that the tractor has good running stability and is easy to manufacture, and can be used for a liquid-transmitted rail vehicle tractor or a traction electric body suspended electric rail vehicle.

The invention discloses a preparation method of a high-metallicity entropy-based oxide catalyst and application of the high-metallicity entropy-based oxide catalyst in hydrogen production by acidic electrolyzed water, and belongs to the field of catalysis. Zinc oxide serves as a carrier, a sodium borohydride solution serves as a reducing agent, water-soluble salt at least containing Ru, Ir and A is evenly mixed under the water bath stirring condition, hydrolysis and reduction are conducted, then medium-entropy alloy black powder is formed through suction filtration, washing and drying, finally, rapid incomplete oxidation is conducted in the air atmosphere of 300-500 DEG C, then acid pickling, suction filtration, washing and drying are conducted, and the medium-entropy alloy black powder is obtained. And the entropy-based oxide catalyst with high metallicity is prepared. The catalyst contains a large number of Ir-Ir metallic bonds or / and Ir-Ru metallic bonds, and the proportion of the Ir-Ir metallic bonds or / and the Ir-Ru metallic bonds can reach 30%-40%. Serious lattice distortion is caused by mismatching of a metal atom fingerprint structure and a metal-oxygen atom coordination structure, stress-strain imbalance distribution is induced, and acidic oxygen evolution reaction kinetics is promoted.

The present invention relates to a La Nina event prediction method based on the abnormal sea level height in the East Indian Ocean, using the marker parameters of the abnormal rising Kelvin wave in the East Indian Ocean during the dipole event, such as the abnormal sea level height or the abnormal subsurface sea temperature, including using the near-equatorial sea level height or the abnormal subsurface sea temperature in the Indonesian Sea or the Western Pacific Ocean, or the East Indian Ocean Kelvin wave obtained by the Indian Ocean wind field, and using a regression prediction model to predict the start-up process and outbreak intensity of the La Nina event. The present invention can break through the spring barrier and successfully predict the outbreak of the La Nina event one year in advance.

The invention relates to an electric connector rocket-ground separating and disengaging device, the tail end of the disengaging device is provided with a first electric connector plug and a second electric connector plug, and the first electric connector plug and the second electric connector plug are respectively in adaptive connection with a first socket and a second socket which are fixedly connected with the tail end of a rocket body; the first electric connector plug and the second electric connector plug are connected to a load distribution frame through corresponding pulling-out steel cables, the load distribution frame is connected with a recovery steel cable, and the recovery steel cable penetrates through a recovery power mechanism in the ground service arm; and the recovery power mechanism executes a remote control instruction to trigger a separation and falling action, and provides enough pulling force to enable the first electric connector plug and the second electric connector plug to be pulled and separated from the first socket and the second socket at the same time. According to the separating and falling-off device, a transverse hydraulic swing rod system or an electromechanical actuation system is replaced with the scheme that a single electric bolt lock is matched with a set of pulley heavy hammer mechanism without main power, the scheme complexity is reduced, the reliability is improved, and the manufacturing cost is reduced.

The invention provides a large-length-diameter-ratio main road type sintered wick high-temperature heat pipe and a preparation method thereof, and belongs to the technical field of high-temperature heat pipes. The high-temperature heat pipe comprises a pipe shell, an end cover, a porous wick, a wire mesh trunk and a liquid metal working medium, and the porous wick, the tube shell and the wire mesh trunk are integrally sintered and molded. According to the high-temperature heat pipe, the porous wick, the pipe shell and the silk screen main road are integrally sintered and formed, the contact thermal resistance can be reduced, the porous wick has high capillary force and large heat exchange area, the silk screen main road has high permeability, the heat transfer efficiency of the high-temperature heat pipe can be remarkably improved, and the heat transfer distance of the high-temperature heat pipe can be remarkably increased. When the preparation method is adopted to prepare the large-length-diameter-ratio trunk line type sintered wick high-temperature heat pipe, the middle core rod is easy to draft, impurities such as a release agent which pollutes the wick are not introduced, the problem that the high-temperature heat pipe is difficult to draft is solved, and the preparation method can be used for standardized and batch production of the large-length-diameter-ratio trunk line type wick high-temperature heat pipe.

The utility model discloses an improved oil cylinder mounting structure, and relates to the technical field of mechanical equipment. An improved oil cylinder installation structure comprises an oil cylinder and further comprises a middle pin shaft plate, the cross section of the middle pin shaft plate is square, a center round hole is formed in the center of the middle pin shaft plate, threaded through holes are formed in the periphery of the center round hole of the middle pin shaft plate, and the axis of the center round hole is parallel to the axis of the threaded through holes. Threaded through holes are formed in the middle pin shaft plate, a screw rod is screwed into the threaded through holes to be connected with an oil cylinder, pin shafts are arranged on the two sides of the middle pin shaft plate, threaded holes are formed in the centers of the pin shafts, the two pin shafts are located on the same axis, and four threaded holes are machined in each of the two side faces, without the pin shafts, of the middle pin shaft plate. The supporting assembly is used for reinforcing the middle pin shaft plate; the problem of shaft breakage can be quickly and effectively avoided on the premise that only one element of the middle pin shaft plate is changed, the technical scheme is simple, and the improvement cost is low.

The invention discloses a preparation method of a resveratrol-pectin compound with high stability and bioaccessibility, which comprises the following steps: step 1, dissolving high-ester pectin in water, adjusting the pH value to 11, reacting at 25 DEG C for 20-30 minutes, maintaining the pH value constant in the reaction process, adjusting the pH value to 2 after degreasing, adding absolute ethyl alcohol to generate precipitate, filtering, washing and drying to obtain a resveratrol-pectin solution; the esterification degree of the low-ester pectin is lower than 30%; 2, respectively dissolving the low-methoxyl pectin and resveratrol in a solvent, and stirring the low-methoxyl pectin solution and the resveratrol solution for 20-40 minutes at the temperature of 30 DEG C according to the volume ratio of 2: 1 to obtain a resveratrol-pectin mixed solution; and step 3, separating and purifying the resveratrol-pectin mixed solution by using a ceramic composite membrane, and freeze-drying to obtain the resveratrol-pectin compound. According to the invention, the stability and bio-accessibility of resveratrol can be effectively improved.

The invention belongs to the technical field of esophageal fistula plugging devices, and particularly relates to a form control circuit of a plugging device. The plugging device form control circuit comprises a master control single-chip microcomputer, a drive circuit and a power supply. The driving circuit is driven by an H bridge and comprises the H bridge, a follow current compensation circuit, a driving chip and a differential detection circuit. The plugging device has the advantages that the form control capacity of the plugging device is achieved, and the problems that due to the fact that the form of an existing plugging device cannot be controlled, the position of the plugging device is difficult to adjust, the plugging effect of the plugging device is uncontrollable, the plugging device cannot conduct plugging completely, and pressure distribution of the plugging device is uneven can be well solved. According to the plugging device form control circuit in the technical scheme, the system response time is short, due to the fact that variables involved in detection and execution are simple, complex operation is not needed, the software execution efficiency is high in the process, and the system response time is a few microseconds.