132results about How to "Guaranteed continuous stability" patented technology

The invention discloses a high-speed printing head of a 3D (three-dimensional) printer. The printing head comprises a rack, wherein a hydraulic cylinder is fixed above the rack; a piston of the hydraulic cylinder is fixed with a feeding device capable of sliding up and down along the rack; an outlet of the feeding device is communicated with a nozzle structure through a volumetric metering pump; a feeding pipe is longitudinally arranged on the rack; the feeding device comprises a drive device and a screw rod driven by the drive device to rotate; the feeding pipe encircles the screw rod; a feeding hole is formed above the feeding pipe; a feeding hot-melting cavity is formed below the feeding pipe; the end of the screw rod is sleeved with a one-way valve; the nozzle structure comprises a nozzle pipe communicated with the volumetric metering pump; a multi-nozzle head is rotationally arranged at an outlet end of the nozzle pipe and provided with at least two nozzles with different pore diameters; when an opening, rotated to any nozzle, of the multi-nozzle head points to a workpiece, only the nozzle is communicated with the nozzle pipe; the multi-nozzle head is driven by a rotary power device to rotate. The printing head has the advantages that the printing speed can be increased while a high-precision printing effect is guaranteed.

The invention discloses a method and a device for solving SDN (software defined networking) flow level configuration consistency updating. The method comprises allocating version numbers to different configurations to process a data packet in an SDN through the configuration with the version number identical to that of the data packet; when configuration updating occurs, installing new configurations for an internal network, adding an old version number to the data packet when the data packet passes by a boundary network and processing the data packet through an old configuration when the data packet enter the internal network, wherein the new configurations do not affect the data packet and guarantee continuous and stable processing of existing flows through the old configurations, and then deleting the version number when the data packet flows out of the SDN; after the internal network finishing the updating, installing temporary configurations for the boundary network at a high priority to transmit flows influenced by the updating to a controller and to still process the flows through the old configurations, and installing the new configurations carrying the new version numbers for the boundary network at a low priority; structuring minimum K-prefix cover set covering existing flow IP (Internet protocol) addresses, and based on K prefixes, structuring configuration shards; deleting overtime shards, and performing periodical updating until all the shards are deleted to complete boundary network updating.

The invention relates to a long-acting ELISA (Enzyme-linked Immunosorbent Assay) plate stabilizing agent for keeping protein activity in an ELISA plate. The agent comprises 0.1-5g protein, 1-15g sugar, 0.1-10g organic matter, 0.01-0.1%(V/V) of preservative, and 10-200mmol buffer solution salt per 100ml water, and a pH (Potential of Hydrogen) value is 7.2-7.4. The stabilizing agent adopts a technical route integrating a closing process and a stabilization process, and can effectively close excessive sites in the ELISA plate, and some active ingredients in the stabilizing agent can ensure continuous stabilization of the ELISA plate. The agent is simple in formula, can stabilize the ELISA plate, and does not produce any influence on a result simultaneously. The ingredients of the agent are easy to obtain, and the formula is simple, so that the cost of the stabilizing agent is lowered.

The invention discloses an online monitoring system for the current distribution of an aluminum electrolytic tank, belonging to the technical field of aluminum electrolysis. The online monitoring system for the current distribution of the aluminum electrolytic tank comprises at least one measuring device comprising an isometric pressure drop measurement fork or a magnetic field detection sensor, the isometric pressure drop measurement fork is used for measuring the isometric pressure drop value of an anode guide rod or a cathode steel bar of the aluminum electrolytic tank to be tested, the magnetic field detection sensor converts the magnetic induction intensity around the anode guide rod or the cathode steel bar into a proportional voltage value according to a Hall principle, and the measuring device is sequentially connected with a data processing device, a wireless network and an upper computer. The invention satisfies the measurement requirements under high-temperature high-dust environment with high magnetic field intensity, has high system flexibility, is favorable to far-distance signal transmission and can simultaneously monitor a plurality of aluminum electrolytic tanks.

The invention discloses an online automatic control method for dual direction-changing side paddles of a lake and reservoir workboat. The workboat mainly comprises a boat body, side paddles, a propeller and a monitoring system. The monitoring system comprises a control unit, a navigation unit, an obstacle avoidance unit, a wind-wave monitoring unit, a wireless communication module and a power supply system. The method comprises the steps of setting a sailing path of the workboat; detecting the working state of the workboat; controlling the moving state of the workboat; performing adjustment on deviation of the workboat from the sailing path; performing adjustment on obstacle avoidance of the workboat; and keeping a stable state of the workboat at a target point. According to the invention, the propeller and dual side paddles capable of adjusting the speed in direction changing are used, and the control unit is utilized to control the direction and the rotating speed, so that efficient sailing of the workboat in various moving modes is realized. Meanwhile, the working state of the workboat is monitored by using a sensor, so that the flexibility of motion control for the workboat is enhanced, influences imposed on the workboat by wind and water flow are effectively resisted, and the workboat is enabled to keep stable at the target point under interference of wind and waves.

The invention discloses a laser additive manufacturing method for a multi-support surface structure of a cavity thin-wall structural part, and belongs to the technical field of laser additive manufacturing. The method adopts a laser additive manufacturing technology to form a high-temperature alloy cavity thin-wall structural part; the direction of maximum orthographic projection area of the structural part is selected as an additive manufacturing accumulation direction; in the additive manufacturing process, the lower part of the part structure cavity position is subjected to additive manufacturing; after the lower part of the cavity position is formed, a support structure with the same material is welded in the corresponding position of the formed part; and then, the support structure is used as support, and the additive manufacturing is continuously performed on the outer surface of the support structure until the whole structural part is formed. The method can realize stable and efficient formation of large cavity thin-wall structure.

The invention relates to a high-precision germanium tetrachloride (GeCl4) supplying method and high-precision germanium tetrachloride supplying equipment for manufacturing a core rod of an optical fiber preform rod. The equipment comprises a programmable logic controller (PLC) of evaporating equipment, a touch screen of the evaporating equipment, a PLC of VAD equipment, a heating tape I, a heating tape II, a heating tape III, a heating tape IV, a temperature sensor I, a temperature sensor II, a temperature sensor III, a temperature sensor IV, a pressure sensor, a liquid level sensor, a control valve I, a control valve II, a control valve III, a mass flow rate controller I, a mass flow rate controller II, an evaporating pot and a power supply, wherein the evaporating pot is provided with a liquid level sensor, the pressure sensor, the temperature sensor I and an electronic scale for monitoring the situation of the evaporating pot, the electronic scale is arranged at the bottom of the evaporating pot for monitoring weight in real time, the heating tape I is arranged outside the evaporating pot, a GeCl4 fluid delivery pipe is arranged on the evaporating pot, the control valve I is arranged on the GeCl4 fluid delivery pipe, an evaporating pot outlet pipeline is arranged on the evaporating pot, and the power supply supplies power to the evaporating equipment.

The invention discloses a detecting and controlling method for the liquid level of a high-temperature solution. The detecting and controlling method is characterized in that an electric conduction baseboard used for transmitting electric wave signals is arranged at the bottom of a high-temperature solution kiln; an exploring electrode used for sampling the electric wave signals is arranged above the high-temperature solution and controlled to move close to the surface of the high-temperature solution until the exploring electrode is in contact with the high-temperature solution, and the exploring electrode starts to sample to obtain contact signals; the exploring electrode is controlled to move far away from the surface of the high-temperature solution until the exploring electrode is separated from the high-temperature solution, and the exploring electrode starts to sample to obtain falling-off signals; a liquid level detector receives the contact signals and the falling-off signals generated from the above steps and transmits the signals to a PLC (Programmable Logic Controller); the liquid level height is obtained through PLC treatment; based on the liquid level height obtained from the above step, and the feeding frequency is obtained through the formula shown in the specification. According to the invention, the detecting and controlling method has the benefits that the liquid level can be kept stable continuously, the technical index in the kiln can be guaranteed to reach technological requirements, the yield and the qualified rate of products can be improved, and the rejection rate is low.

The invention discloses an automatic logistics production line for lengthening and prefabricating of a two-in-one pipeline. A first conveying roller way is arranged between two raw material shelf storage areas; the two raw material shelf storage areas are connected to a first butt welding station area through the first conveying roller way; the discharge opening of the first butt welding station area is connected to a buffer material shelf storage area through a second conveying roller way; a discharge opening in the other side of the buffer material shelf storage area is connected to a first finished product material shelf storage area; a third conveying roller way is arranged between the first finished product material shelf storage area and the buffer material shelf storage area; the first finished product material shelf storage area and the buffer material shelf storage area are connected to a second butt welding station area through the third conveying roller way; a fourth conveying roller way is arranged at a discharge opening in the other side of the second butt welding station area; one side of the fourth conveying roller way is connected to one raw material shelf storage area; a second finished product material shelf storage area is arranged on the other side of the fourth conveying roller way. By adopting the automatic logistics production line disclosed by the invention, the working efficiency is improved greatly and the labor intensity is reduced; similar production rhythms are generated among all stations, the logistics route is short, and buffer areas are arranged among the stations reasonably, so as to ensure continuity and stability of production.

The invention provides a measuring system for an electric wire structure. The measuring system comprises an object supporting table, a computer, an LED light source and a plurality of image obtaining units. The image obtaining units are located on the upper side of the object supporting table and have different pixels. The image obtaining units are connected with the computer, and a plurality of test piece carrying positions are arranged on the object supporting table. The test piece carrying positions correspond to the image obtaining units; a user primarily selects the corresponding image obtaining units according to the diameter of an electric wire, and test pieces are placed on the corresponding test piece carrying positions; the image obtaining units are used for obtaining the images of the test pieces and transmitting the images to the computer, and the computer conducts processing and calculating according to the images. The LED light source is installed facing the image obtaining units and provides the overall light sources for the test pieces. According to the measuring system, the computer is used for automatically conducting detection, a measuring result can be obtained only within a few seconds, and the measuring of electric wires with a large diameter range can be achieved with high precision, high efficiency and high stability.

The invention provides anti-acne cream based on high-purity herbal extract, and a preparation method of the anti-acne cream. The preparation method concretely comprises the following steps: (1) cleaning natural herbaceous plants, drying the cleaned herbaceous plants in the air, then cutting the dried herbaceous plants and grinding into powder, mixing the powder of the herbaceous plants according to proportion, adding an ethanol water solution into the mixture, carrying out ultrasonic dispersion, carrying out heat reflux extraction for twice, and carrying out rotary evaporation and concentration on filtrate until the filtrate is free from alcohol taste to obtain extract of the natural herbaceous plants; (2) centrifuging the extract of the natural herbaceous plants and taking supernatant of the extract, putting the supernatant into dry macroporous resin, standing still and carrying out suction filtration; after absorption, transferring the macroporous resin into a 80-90% of ethanol water solution, standing still and carrying out suction filtration; taking out the macroporous resin, carrying out rotary evaporation on filtrate until the filtrate is free from alcohol taste to obtain purified extract of the natural herbaceous plants; (3) mixing auxiliary agents, heating mixture up to 80-90 DEG C, stirring the heated mixture until the mixture is completely dissolved, cooling to 45-50 DEG C, adding the purified extract of the natural herbaceous plants into the mixture, evenly stirring, carrying out heat preservation, and then carrying out rotary evaporation until the mixture is in a cream state to obtain the anti-acne cream based on the high-purity herbal extract.

The invention discloses a water flux and retaining rate testing device of a hollow fiber membrane. The water flux and retaining rate testing device comprises a water storage device, a water replenishing device, a fixing frame, a packaging pipe used for packaging a stock solution and a membrane filament, membrane filament fastening end covers respectively sealed and connected with both ends of the packaging pipe, a metering pump, an outlet valve and a metering pump control panel, wherein both ends of the membrane filament respectively pass though filament passing holes of the two membrane filament fastening end covers and then enter the water storage device; the metering pump is connected with the water port of one membrane filament fastening end cover and communicated with the water replenishing device; the outlet valve is connected with the water port of the other membrane filament fastening end cover and communicated with the water replenishing device; the metering pump control panel is electrically connected with the metering pump. The testing device disclosed by the invention has the characteristics that the packaging pipe is used to package the stock solution and the membrane filament, and the pressure of the stock solution in the packaging pipe is controlled within a stable range by the cooperation among the metering pump control panel, the metering pump and the outlet valve. The testing device has the advantages of being simple in the pressure control system, controlling the pressure in the packaging pipe by liquid flow and thus ensuring the continuous stability in the pressure of the testing device.

The invention discloses a brine drilling and exploiting system and a method for dynamic cleaning and salt deposition resisting in a closed cycle mode. The drilling system comprises a brine exploiting well (1), a brine diving electromotor (2), a screening pipe (3), a brine diving pump (4), a well inner pipe (5), a well opening pipe fixing steel channel (6) and a well opening pipe (7). A salt resisting brine mud fixing well table (15) and a well lid steel plate (16) are arranged at a well opening, and a support lifting device (17) for overhauling a brine sucking device is arranged on the upper portion of the well lid steel plate (16). The screening pipe (3) is located on the inner side of the bottom well wall of the brine exploiting well (1). The well opening pipe (7) is located at the position, close to the inner side of the well wall, of the salt resisting brine mud fixing well table (15), and the #-shaped well opening pipe fixing steel channel (6) is welded to the position below the well opening pipe. The brine diving pump (4) is fixedly arranged at the position with a certain depth in a well, and a fresh water pipe (8) extends into the well from the ground. A closed cycle dynamic cleaning method is adopted, deposited salt at an impeller and a runner can be dissolved through passing fresh water or lose adhesive force and is finally discharged from a water outlet pipe (9) to be discharged together with collected brine, and therefore stable exploitation of high-concentration and supersaturation brine in the deep portion can be achieved.

The invention discloses die cutting equipment for carton processing and a working method thereof. The die cutting equipment comprises a conveying mechanism; a feeding mechanism, a die cutting mechanism and a collecting mechanism are sequentially arranged on the conveying path of the conveying mechanism; the feeding mechanism comprises an accommodating box for carrying out posture restraint on a paperboard and a feeding roller for carrying out feeding operation on the paperboard; the collecting mechanism comprises a separating mechanism and a material collecting piece; the separating mechanismis used for separating the board and waste after die cutting of the paperboard; and the material collecting piece is used for collecting the board and waste. According to the die cutting equipment forcarton processing and the working method thereof, the feeding process is continuous and stable to improve the automation rate of the overall machining process, and the board part and the waste part of the paperboard after die cutting are separated, so that the trouble of setting the separating procedures separately is avoided, and the producing and processing efficiency of a factory is improved.

The invention discloses an oxygen partial pressure supply system. The oxygen partial pressure supply system comprises an oxygen compressor set and a depressurization station; and the oxygen partial pressure supply system is characterized in that the oxygen compressor set comprises a first oxygen compressor, a second oxygen compressor, a third oxygen compressor and a fourth oxygen compressor. The four oxygen compressors are connected with a medium pressure oxygen pipe through pipes; an oxygen turbocompressor is further connected to the medium pressure oxygen pipe to press out supplied 2.0 MPa oxygen, the medium pressure oxygen pipe is then connected to the depressurization station for oxygen depressurization, and the depressurized oxygen is conveyed to be used for steelmaking; and meanwhile, the oxygen compressor set is further provided with a pipe to be connected to a low-pressure oxygen pipe to press out the oxygen which is 0.8-1.0 MPa and 10000 m<3>/h, and the oxygen is directly supplied to iron making and steel rolling. According to the oxygen partial pressure supply system, a special low-pressure oxygen pipe is arranged, depressurization supply after oxygen pressurization is not needed, the oxygen supply procedure is simplified, energy consumption is effectively reduced accordingly, the production cost is reduced, energy conservation and environment protection are achieved, the safety of the low-pressure oxygen pipe is higher, and the running period is longer.

The invention relates to a real-time on-off times recording device for a relay in a matrix switch module, and a method for realizing on-off times recording by employing same. The invention solves the problems that the probability of damage of the relay rises sharply along with the increase of service time, and the electrical life of the relay in the matrix switch is limited. The real-time on-off times recording device comprises a matrix switch switching command buffering unit, a matrix switch switching command decoding unit, an E2PROM reading-writing control unit, a counting buffering unit, a data verification unit and a serial E2PROM memory unit, wherein the matrix switch switching command buffering unit is a first-in-first-out memory. The serial number of the relay executing on-off actions is decoded by analyzing the switch switching command, and the on-off times of the relay is stored in the serial E2PROM memory unit. The device and the method are suitable for the filed of automatic testing.

The invention belongs to automobile parts, and particularly relates to a rear cover for enhancing the braking performance of a hydraulic retarder. An air inlet of an electromagnetic air proportional valve is formed in the left side of the upper portion of the rear cover, and a first air channel, a second air channel and a third air channel are formed in the right side of the air inlet. The included angle between the center line of a first oil channel section and the horizontal direction is beta, a second oil channel section is vertically upward, and the included angle between the center line of a third oil channel section and the vertical direction is alpha. An oil storage chamber is arranged at the top end of a lubricating oil channel and communicates with an oil suction port of a lubricating oil pump, and the lubricating oil channel and an oil inlet channel are surrounded by the lubricating oil channel and the oil inlet channel to form an oil outlet channel. A one-way valve is arranged in a one-way valve seat hole, the one-way valve seat hole is communicated with a middle cover oil outlet channel through the one-way valve, and a heat exchanger oil inlet hole is formed in the lower end of the oil outlet channel. The structure is compact, the function integration level is high, oil liquid entering a working cavity of the hydraulic retarder can be effectively prevented from containing a large amount of air, and the continuous stability of the braking performance of the hydraulic retarder is guaranteed.

The invention discloses an automatic correction device for a moving arm. The automatic correction device comprises a master control module, a laser distance measuring sensor, a battery valve module and a hydraulic cylinder assembly. The master control module is electrically connected with the laser distance measuring sensor and the battery valve module. The laser distance measuring sensor is aligned to all moving arm plates of the moving arm and obtains the positions of all the moving arm plates. A plurality of hydraulic cylinder sets are arranged according to the moving arm plates needing to the corrected. The battery valve module is connected with the hydraulic cylinder assembly. The laser distance measuring sensor detects the position information of all the moving arm plates. The master control module compares the position information with a preset standard position range value and transmits correction distance parameters to the battery valve module. The feeding strokes of hydraulic cylinders are controlled by the battery valve module, and therefore the positions of all the moving arm plates are corrected. According to the automatic correction device, the correction technology of the moving arm of a loader is intelligently controlled, and the problems that in original manual correction, the labor intensity is large, the manual cost is high, and the correction precision and the production efficiency are low are solved.

The invention discloses an anti-coal-interruption coal feeder for a thermal power plant. The anti-coal-interruption coal feeder for the thermal power plant comprises a shell and a coal bin. Base legs are arranged at the bottom of the shell. An iron removal conveying belt is arranged on the upper left of a weighing conveying belt in the shell. The iron removal conveying belt and the weighing conveying belt are closed loops. The top of the shell and the upper portion of the left side of the ion removal conveying belt are further provided with a coal inlet. The coal bin is arranged above the coal inlet. The coal bin is formed by connecting an upper conical bin body and a lower conical bin body. When coal powder is fed into the iron removal conveying belt from the coal inlet, scrap iron and screws in the coal powder are attracted by magnets on the iron removal conveying belt and will not fall onto the weighing conveying belt under the action of an electric vibrator. The quality of the coal powder is guaranteed. The coal bin is composed of two layers of bin bodies each of conical structures. When coal enters the lower conical bin body from the upper conical bin body, the section areas of the conical bodies suddenly become large, the pressure of the conical walls on the two sides on raw coal is correspondingly reduced, the descending speed of the raw coal is suddenly increased, a local vibration effect is formed, and material blockage is avoided.

The invention relates to a rapid and precise GPS signal correction and positioning method for a hot metal car. The method comprises the steps: performing the automatic calculation and judgment of thecollected GPS signal, RFID signal and vehicle direction signal through the GPS signal enhancement technology and the RFID positioning technology via a background computer automatic rectification method according to the GPS signal quality and a feedback position signal; automatically selecting a stable position signal; automatically performing the simulation tracing of a vehicle when the GPS signalis not stable; automatically switching to the GPS signal when the signal returns to a normal state, thereby achieving the precise positioning of the hot metal car. The method employs the technologiesof wireless network, RFID, GPS and computer, achieves the whole-process positioning and tracking of the hot metal car in a transportation process, provides a remote electronic eye for a production manager and a scheduling commander, achieves the complete mastering of the continuous track of the operation of the hot metal car, provides accurate and reliable data for the automatic scheduling of thevehicle for the background program, changes the blind adjustment of the hot metal car into the apparent adjustment, guarantees the safe outputting and safe delivery of iron to maximum degree, and improves the hot metal scheduling efficiency.

The invention discloses a catenary-chain type cross-linked cable production die and a production method, and belongs to the technical field of wire and cable manufacturing. The die comprises a basic die body, and the interior of the basic die body is provided with a wire-bearing circular hole and an incoming wire tapered hole. The die also comprises a first inner die body and a second inner die body, wherein the inner die bodies are in an integrated structure. The first inner die body is disposed in the basic die body in a sleeved manner, and the second inner die body is disposed in the first inner die body in a sleeve manner. One end of the first inner die body and one end of the second inner die body are respectively provided with a first incoming wire hole and a second incoming wire hole, and the other ends of the first and second inner die bodies are respectively provided with a first bushing and a second bushing. The conical degree of the first incoming wire hole is consistent with the conical degree of the incoming wire tapered hole. The conical degree of the second incoming wire hole is consistent with the conical degree of the first incoming wire hole. The production method needs to produce different types of cable conductors, and enables the corresponding first inner die body to be inserted into the basic die body or enables the second inner die body to be inserted into the first inner die body. The die and method are quick and convenient in die replacement, improve the production efficiency, and achieve the continuous production of adjacent types of conductors.

The invention discloses a horizontal draught type plunger piston type carburetor for a large-emission competitive scrambling motorcycle. The carburetor comprises a carburetor body assembly (1), and a floater chamber assembly (2) which is mounted on the lower surface of the carburetor body assembly (1); an oil feeding system, a starting system, an idling system, a main oil system and an acceleration system are arranged in the carburetor body assembly (1). The carburetor has the beneficial effects that the structure is compact, the scrambling motorcycle can be started and run at a constant speed in an environment under a low temperature less than -40 DEG C; an accelerator can be timely responded, the acceleration for overtaking can be timely responded, the oil returning during acceleration can be effectively avoided, and the safety and reliability can be ensured.