458results about How to "Reliable operation" patented technology

The present invention provides improved methods for forming and mounting a sleeve on a catheter shaft in order to form a distensible balloon catheter. The balloon is formed from a distensible sleeve that is treated to render one or both of its ends essentially non-distensible. The balloon is mounted on the catheter shaft by the non-distensible ends, without compromising the distensible operative portion of the balloon. The balloon may also be mounted using non-distensible tape or similar means to achieve a similar result.

The invention relates to high-salt complex wastewater reuse and zero discharge integrated equipment and a technology. The equipment provided by the invention comprises a pretreatment system, a reuse and reduction system and a zero discharge system. The technology comprises the following steps: carrying out homogenization and averaged quantity on high-salt complex wastewater, successively adding sodium hydroxide, sodium carbonate, PAC and PAM to carry out coagulation treatment, letting a mixed liquor which has undergone coagulation treatment enter a filter tank for sedimentation and filtration by the use of an immersed microfiltration membrane, letting a supernatant enter a reverse osmosis treatment process, letting pure water obtained by reverse osmosis treatment enter a reuse water tank for utilization, further condensing condensed brine, and crystallizing the condensed brine or putting the condensed brine into an evaporation pond for atomization and evaporation processing, wherein the reverse osmosis treatment adopts three-level RO: a medium-pressure membrane element is firstly used for desalination and condensation; a high-pressure membrane element is then used for further desalination and condensation; and a ultrahigh-pressure membrane element is finally used for further desalination and condensation. According to the invention, 95% of reverse osmosis concentrated water or analogous high-salt complex wastewater can be recovered for reutilization, only 5% of high strong brine is left to undergo evaporative crystallization or enter the natural evaporation pond. Water resources are fully recycled, and reuse and zero discharge costs of high-salt complex wastewater are reduced.

An energy mixed power system for the car with fuel accumulator set features that the output of electric stack is connected via anode of power diode to the input of monodirectional DC/DC converter, whose output is connected to the output of accumulator set and input of motor controller, and the inputs of auxiliary device of fuel accumulator set and 24V DC/DC converter are connected via a switch to the cathode of power diode and via another switch to the output of monodirectional DC/DC converter. The system is started by accumulator set and then is powered by fuel accumulator system.

The invention discloses a stator flux linkage set method of brushless DC motor direct torque control, a given rotor flux linkage psif* and a given stator armature reaction flux linkage psia* are respectively set, and a given stator flux linkage psiS* is obtained by performing resultant vector on the above two parts. In the invention, the stator flux linkage set coincides with the running track of the stator flux linkage with an ideal control system, and the brushless DC motor direct torque control system has stable running and good control performance; the flux linkage set value can be dynamically and automatically adjusted along with the change of the working condition of the control system, thus inhibiting motor torque pulsation and improving running efficiency of the system.

The invention relates to a method for continuously extracting functional components of chlorella vulgaris, which comprises the steps of enriching the chlorella vulgaris through the membrane separation technology, obtaining concentrated slurry of the chlorella vulgaris, adding a proper enzyme in a liquid phase system for wall-breaking, and using a solvent for extracting chlorophyll from chlorella vulgaris solution after wall-breaking, thereby being capable of obtaining a functional pigment product and reducing the color value of follow-up products; and firstly carrying out enzymatic hydrolysis on a water phase of the chlorella vulgaris after decoloring, then using the solvent for extracting functional grease, extracting active polysaccharides from the obtained degreased chlorella vulgaris by using the acid method, and then drying the other parts for obtaining crude proteins of the chlorella vulgaris. The main products comprise the chlorophyll, the active polysaccharides of the chlorella vulgaris, the functional grease of the chlorella vulgaris, the proteins of the chlorella vulgaris and the like, and the method optimizes the process on the basis of ensuring the activity of the functional components of the chlorella vulgaris, thereby obtaining high yield and reducing production cost.

The invention discloses a production method for seaweed beverage, belonging to the technical field of marine organism development and utilization. The production method for seaweed beverage comprises the steps of selecting seaweeds, pretreating, digesting, homogenizing, performing vacuum degassing, fermenting, filtering and blending; acid or alkaline soaking, vacuum degassing, secondary microorganism fermentation and simultaneous multistrain fermentation technologies are adopted to provide a reliable technical scheme for removing strange fishy smell. Compared with the prior art, the production method for seaweed beverage overcomes the defects of the prior art, not only does the production method for seaweed beverage have the characteristics of being more reliable and convenient to operate, but also the seaweed beverage produced by adopting the production method is unique in flavor, free from fishy smell, soft in mouth feeling, harmonious and mellow, thus having outstanding substantial characteristics and remarkable progress of the marine health-care beverage which is rich in nutrients, green and health-care and suitable for both the old and the children.

A bearing system for use in high speed rotating machinery, such as a turb ocharger (14), wherein a shaft (12) is rotatably supported by a floating bea ring cartridge ( 10) having axially spaced angular contact bearings (16, 18) each with a set of bearing balls (30) supported between inner and outer rac es (32, 34). The bearing cartridge includes an inner spacer sleeve (42) for axially spacing the inner bearing races, and a rotationally floating outer s leeve (46) having a pair of radially inwardly open grooves (52) for removabl y receiving snap-type retaining rings (54) which engage and axially space th e outer bearing races. The axial dimension of the inner spacer sleeve is elo ngated slightly relative to an axial dimension defined between outboard face s of the installed retaining rings, thereby slightly unloading the sets of b earing balls from their respective outer bearing races. Such slight axial un loading enhances smooth- running operation with minimal bearing wear, while accommodating transient loads during operation.

The invention relates to a sieve bend filtering device for aquaculture, which comprises a water tank, a sieve bend and an automatic cleaning device, wherein a clear water trough is formed at the bottom of the water tank, a water outlet pipe is arranged on one side of the clear water trough, an overflow trough is arranged at the upper end part on the front side of the water tank, and a water inlet pipe is arranged on the outer side wall of the overflow trough; the upper end of a net body of the sieve bend is connected to the upper edge on the inner side of the overflow trough, the lower end is connected to the upper edge on the inner side of a pollution collecting trough fixed at the bottom of the water tank, and a pollution discharge port is arranged at the bottom of the pollution collecting trough; and the automatic cleaning device comprises a cleaning brush and a driving device, the bottom surface of the cleaning brush and the inner surfaces of the sieve bend and the pollution collecting trough are in consistent shapes, the driving device comprises a motor, a reduction gearbox and a transmission mechanism, the transmission mechanism comprises a threaded lead screw and a movable nut, and travel switches are further respectively arranged at two ends of the threaded lead screw. The favorable point is that a programmable timer is further arranged in the driving device, so that dirt retention on the net surface of the sieve bend can be removed by driving the cleaning brush to reciprocate along the horizontal direction which is parallel to the sieve bend in a timing manner; and the sieve bend filtering device for the aquaculture is simple in structure, reliable for operation and obvious in energy-saving effect.

The invention relates to a replacement monitoring chip and a replacement monitoring method. When the system is normally electrified, an electrifying delay circuit controls and outputs an electrifying delay reset signal; the reset signal is sent out under the action of a watchdog when the operation exception occurs in the system; when the system trends to power down, a power-failing notifying signal is sent out to lead the power-down notifying signal to keep a certain time interval from completely power-failing, thereby ensuring the data memorizing time when powering down and no reset signal output during the process of powering down. In addition, the invention also provides coercing reset function; when the reference voltage of a working power supply is less than a certain voltage reference value which is set, the coercing reset signal is maintained to lead the system to run stably. In a word, the invention enables the system to run stably and reliably, and process the data in time without losing.

The invention discloses a system for testing the dynamic parameter of a high-speed electromagnetic valve for a knitting machine. The system comprises a testing table (1), a measurement and control circuit board (2), an upper computer (3) and an external power supply module (4), wherein the upper computer (3) comprises a data acquisition card and an image acquisition card; the data acquisition card is used for communicating with the measurement and control circuit board (2) and measuring a voltage signal to be tested, which is output by the measurement and control circuit board (2); and the image acquisition card is used for synchronously acquiring and storing output data of a high-speed line scanning camera (5) and has the function of synchronously triggering a measurement interface circuit board (12). In the system, by adopting a machine vision-based non-contact measurement method and a design method of a virtual instrument, using a general computer and the data acquisition card and combining a self-developed hardware testing platform, the dynamic response time of the electromagnetic valve is accurately measured, and necessary testing data is provided for the design and inspection of electromagnetic valve products.

The invention relates to a method for connecting a convertor station into a multiport flexible direct current transmission system in a live manner, and pertains to the technical field of power electronics. According to the method, with the help of the structure characteristics of the flexible direct current transmission system itself, and through the characteristic that a disconnecting switch can be used to open and close a small-load current or a capacitive current, by appropriately reducing the flexible direct current system direct-current voltage, positive and negative electrode direct-current disconnecting switches are closed successively to realize the multiport flexible direct current transmission system live connection function. According to the invention, through the structure of the flexible direct current transmission system itself and the simple successive operation of the disconnecting switches, the multiport flexible direct-current transmission system live connection problem in the condition that a direct-current circuit breaker cannot be popularize and applied can be solved, advantages of mature technology, reliable operation, easy implementation and excellent performance can be realized, and the method can be applied into actual multiport flexible direct-current transmission projects.

A compact fluid dispenser for use in controllably dispensing fluid medicaments, such as antibiotics, blood clotting agents, analgesics, and like medicinal agents from collapsible containers at a uniform rate. The dispenser includes a novel stored energy source that is provided in the form of a compressible-expandable member that functions to continuously and uniformly expel fluid from the device reservoir. The apparatus further includes a novel fluid flow control assembly that precisely controls the flow of the medicament solutions from the device reservoir to the patient.

The invention discloses an isolated power grid multi-unit parallel load distribution control system comprising a load distribution system and DEH (Digital Electro-Hydraulic) systems. A controller of each of the DEH systems is embedded with a DEH specific control program; state signals and parameters during the running of a steam turbine, and the state signals, running parameters and signaling modes of a DCS (Distributed Control System) system, an electrical system and a boiler FSSS (Furnace Safety Supervision System) are all received by a load distribution system, are judged and processed by a load distribution program and then control signals are sent to each DEH system, and the unit load is distributed by the embedded DEH control logic. The isolated power grid multi-unit parallel load distribution control system realizes the distribution and transfer of loads of an isolated power grid parallel multiunit, displays the running states of each unit, selects the appropriate running mode according to the running parameters of the units, and freely sets the load distribution proportions, thereby realizing the frequency control mode or load control mode of and the load planned scheduling of connected units and guaranteeing the simultaneous safe and reliable running of each steam turbine.

The invention discloses a self-adaptation method for remote equipment transmission rate comprising: receiving data from upper level primary device to acquire present rate of primary device; comparing maximum threshold of present rate and rate of slave device; if the two thresholds are equal, the slave device set self rate to be identical with that of primary device; if present rate is bigger than maximum threshold of slave device rate, the slave device request the primary device for reducing rate; if the present rate is less than maximum threshold of slave device rate, slave device request the primary device to promote rate. The invention can be agilely implemented and guarantee reliable operation for communication system. The invention also provides a self-adaptation device for rate of remote device and a device for controlling rate self-adaptation of remote device.

The invention discloses a horizontal sand mill which comprises a base, a motor, a main shaft and a grinding cylinder. The motor is fixed on the base, the main shaft is hollow and is connected with the motor through a belt pulley, cooling oil chambers are fixedly arranged around the main shaft, a cooling water flowing passage is intermediately formed, a plurality of grinding rods are fixedly arranged around the outer wall of a grinding inner sleeve, a cooling water pipe is arranged in the grinding inner sleeve, a U-shaped spiral water channel is fixedly arranged around the outer wall of the cooling water pipe, and a feeding hole and a discharging hole are arranged on a grinding outer sleeve. In the mill, both-end-surface mechanical sealing is adopted and a sealing ring is arranged at the joint of a bearing and a shaft. By adopting the technical scheme of the invention, the defects caused by overhigh temperature generated when a traditional horizontal sand mill runs are effectively overcome, the sand mill is stable and reliable to run, and the production quality and the operation efficiency are greatly improved.

A proportional pressure control valve includes a valve housing (38) with at least three fluid connections (1, 2, 3). The valve can be connected to a hydraulic drive system with a pre-determinable consumer pressure. The valve can perform reliable valve switching functions even for low-viscous fluid media, and can reduce its susceptibility to disturbance variables. A valve piston (56) actively connected to a pilot seat (5) by an energy accumulator (62) can be controlled by a control device (40). The consumer pressure on a fluid connection (1) acts on the valve piston (56) such that, according to the consumer pressure and the actuating force of the control device (40), a fluid can flow between the two other fluid connections (2 and 3) in both directions inside the valve housing (38).

The invention discloses a plastic bag in-half folding bagging machine used for folding a plastic bag in half and then placing the plastic bag into a package bag. The plastic bag in-half folding bagging machine comprises a machine frame provided with an in-half folding bagging device, an opening stretching device and a clamping output device. The bottom layer of the package bag is fixed to the lip portion by the opening stretching device through a package bag tray and a baffle block, the upper layer of the package bag is sucked up through a sucker mechanism to form an opening, two stretching boards are adducted through a stretching board swing mechanism and stretch into the package bag, then the stretching boards stretch towards two sides, so that the package bag is expanded to form a cavity corresponding to the package bag in shape, and the plastic bag is folded in half and placed in the package bag through the in-half folding bagging device; the plastic bag placed in the package bag is clamped through the clamping output device and placed on a preset position. The plastic bag in-half folding bagging machine is simple in structure and stable in work and improves work efficiency.

The invention relates to a welding tool with a cooling structure. The welding tool comprises a pedestal; a welding support column and a welding seat are installed on the pedestal. A side clamp plate is installed at the side of the welding seat; a first positioning plate and a second positioning plate are installed on the upper end surface; a horizontal transverse plate is clamped longitudinally between the first positioning plate and the side clamp plate; and the horizontal position of the horizontal transverse plate is limited by the second positioning plate. Besides, a placing groove for placing a lower folding part of a bending arc plate is formed in the pedestal; clamping space for clamping the upper folding part is formed between the welding seat and the side surface of the welding support column; and the welding part of the bending arc plate is placed on the upper end surface of the welding support column horizontally and is in contact with the horizontal transverse plate. An elastic positioning structure is installed between the side clamp plate and the welding seat and includes an abutting pressing plate; one end of the abutting pressing plate is abutted against the bending folding part of the bending arc plate; an end spring is installed between the other end of the abutting pressing plate and the welding seat; and the end portion of the end spring is abutted against a fixed shot column of the welding seat.

The invention discloses a motor driving system without an electrolytic capacitor and a control method and device of the motor driving system. The method comprises the following steps of detecting an input AC voltage of the motor driving system in real time; calculating a current highest running frequency of a compressor motor according to the input AC voltage; and controlling the compressor motor according to the current highest running frequency. By the method, the current highest running frequency of the compressor motor is calculated according to the input AC voltage, the highest rotational speed of the compressor motor can be timely limited when the input AC voltage abruptly changes, so that the compressor motor is effectively prevented from being out of control or the motor driving system is effectively prevented from being damaged, and the compressor motor and the motor driving system are enabled to stably and reliably run.

The invention relates to a device for the insertion of a cannula into a bone of a patient, which comprises: (a) an activator assembly for activating the device; (b) needle assembly which comprises a stylet and cannula; (c) barrel assembly for containing said stylet and cannula in a loaded state prior to the device activation; and (d) a setting assembly for adjusting the penetration depth of said cannula into the patient's bone.

The invention belongs to the technical field of marine corrosion and protection, and relates to a deep and shallow sea alternating corrosion environment simulator. Periodic changes of parameters such as pressure, temperature, dissolved oxygen and pH value are controlled to simulate alternating corrosion environment of sea water at different depths, and realize material performance test in the environment, so as to evaluate various performances of the material in deep and shallow sea alternating corrosion environment. The simulator comprises a pressure alternating system, a salinity regulating system, a pH value regulating system, a temperature control system, a dissolved oxygen regulating system, an auxiliary regulating system, a counterbalance valve, a central control board and a host computer. Medium temperature, medium dissolved oxygen and pH value are adjusted to simulate environmental parameters of deep sea or high pressure; and then a pressure alternating system is employed to conduct pressure change according to a set pressure curve, so as to simulate deep sea alternating environment and evaluate material properties. The simulator has simple structure principle, reliable usage and operation, real stimulating effects, good effects of deep and shallow sea alternating experiments, and strong practicability.

The invention discloses a cold test mis-centering device for a reactor control rod drive wire of a nuclear power plant. The cold test mis-centering device comprises a supporting ring and an adjustment piece, wherein the supporting ring is fixedly arranged on a test body, wherein an eccentric hole is formed in the supporting ring; the center axis of the eccentric hole shifts from the center axis of the supporting ring for a first eccentricity; the adjustment piece is cascaded on the supporting ring and is connected with a control rod drive mechanism; a center hole corresponding to the eccentric hole is formed in the adjustment piece; the eccentric hole and the center hole are used for jointly containing the control rod drive mechanism; the center axis of the control rod drive mechanism shifts from the center axis of the center hole for a second eccentricity; the adjustment piece can rotate or slide relative to the supporting ring to adjust the mis-centering value of the center axis of the control rod drive mechanism relative to the center axis of the supporting ring. The cold test mis-centering device for the reactor control rod drive wire of the nuclear power plant can precisely adjust the mis-centering value of the center axis of a control rod guide barrel relative to the center axis of the supporting ring through motion of the adjustment piece relative to the supporting ring.

The invention discloses an experimental table of a wind-driven generator pitching slewing support, comprising an axial loading frame, an axial force-loading cylinder, two same-specification pitching slewing supports to be experimented, a large gear, a left connecting board, a right connecting board, a slewing support-mounting base, an overturning moment loading arm, an overturning moment loading cylinder, a power-driving module and a radial force-loading cylinder. The invention can simulate the operation state of a wind-driven generator pitching slewing support under various complicated loads in a vertical mounting state, detect the starting moment of the pitching slewing support, monitor the resistance moment, roller abrasion amount, lubricant temperature and vibration signals in operation in real time and estimate the fatigue service life of the pitching slewing support.

The invention discloses an implementation method of an embedded type wireless projection access device based on OMAP (object module assembly program)3530 and provides a rational wireless expansion solution based on a screen transmission idea to solve the use inconvenience of the existing wired projector. The device adopts the OMAP 3530 of TI as a core, wherein a dual-core framework combining ARM and DSP (digital signal processor) meets the application requirement of user interaction and data processing. The implementation method provided by the invention employs different programming methods and ideas comprehesively, the whole application program is divided into four modules at an ARM end and a video decryption server end mould at a DSP end, thereby providing a guarantee for real time processing of streaming media data, wherein the four modules at the ARM end include a network reception module, a code stream conversion module, a video decryption client end module and a video rendering module.

The invention provides a multi-channel FES (Functional Electrical Stimulation) synchronous walking aid. The multi-channel FES synchronous walking aid comprises a hose, a trigger and an electrode; a stimulator connected to the electrode and a synchronous controller connected to the trigger are arranged in the host so as to form an electrical stimulation close-loop control circuit for tracking gait actions of the diseased limb. In the hose, a plurality of timing sequence operation control module arranged in the synchronous controller are nested in each other and inserted in two foot control trigger elements of the trigger by use of a wiring harness, and used for alternatively switching the operations of walking timing sequences and synchronously controlling stimulation pulse sequences output by the stimulator. The stimulator is provided with a low-frequency pulse circuit module and a stimulation pulse power-driven circuit module, the two of which are inserted in four groups of electrodes A, B, C and D by use of a wiring harness to stimulate the actions of the diseased limb. The main controller comprises an operating interface, a memory, a single chip and a control program thereof. The synchronous walking aid is capable of stimulating the diseased limb so that the diseased limb is off the ground to exercise gait actions, and also helping a patient with walking on the ground; the synchronous walking aid can be applied independently to stimulate the diseased limb of one single side, and two aids can be liked to stimulate the diseased limbs of two sides to act alternately and cooperatively.

The invention provides an exploitation method and a system of seabed methane hydrate. The method comprises the steps that two silos which are different in depth and not far in distance are drilled by a drilling platform to a methane hydrate layer; two communicated cavities are formed by an explosive at the bottoms of the silos; high-temperature seawater is continuously injected into the bottom of the deeper silo, so that methane is converted into a gaseous state from a solid state; gaseous methane is ejected from the other silo, pressed, cooled, subjected to moisture removal, refrigerated by a nitrogen compressor to -162 DEG C to form liquid methane or made into methane hydrate again for storage; and a part of exploited methane serves as a fuel for heating the seawater. The method and the system have the benefits that methane hydrate stops decomposition as long as the high-temperature seawater is not injected; pipelines and container tanks have heat preservation measures, so that no heat energy is wasted; a diesel generator supplies power, so that the cost is low and the operation is reliable; the method belongs to a gap permeation displacement method and cannot cause seabed landslide; emissions are only carbon dioxide; and other wastes are wholly backfilled into a seabed, and are recycled.

The invention discloses a comprehensive pipe gallery operation/maintenance management platform based on a BIM model. The platform includes a data collection layer, a data transmission layer, a data processing layer, a service logic layer and a data display layer. The data collection layer collects data and stores the data into the data processing layer through the data transmission layer. The service logic layer analyzes the data in the data processing layer on the basis of exchanging data with a BIM system and feeds back processing results through the data display layer. The data display layer is a software interface based on BIM + GIS. The software interface is provided with an operation/maintenance management unit. The data processing layer includes a monitoring system unit. The management platform is based on the BIM model, can visually display detailed structures of equipment and pipelines inside a pipe gallery, and integrates monitoring, control, operation/maintenance and management functions into one, and all subsystems are organically combined, work in a cooperation manner, and realize function linkage.

The invention provides an application priority management method, device and system, and storage medium. The application priority management method comprises the steps of loading a process priority configuration file; according to the process priority configuration file, establishing a process priority mapping table; when an application process is started, marking a priority of the process according to the process priority mapping table; according to the priority of each process, dynamically adjusting a priority threshold of the application process; and when a system resource recycling mechanism is triggered, preventing the application process with the high priority from being recycled by a system. Therefore, the application process of a core function in a vehicle-mounted navigation product can be ensured not to be recycled by the system in a long-time running process; and the core function of the vehicle-mounted navigation product is ensured to continuously and reliably run.

The invention relates to a laser discharge chamber device of a gas CO2 laser, comprising a vertical plate at the right side of the chamber, a support frame plate on the chamber, an upper insulating frame plate on the chamber, an upper electrode plate, a ceramic insulating strip, an upper preionization triggering needle, a vertical plate at the left side of the chamber, a lower discharge electrode, the air inlet of a gas circulating path, a lower electrode plate, a lower preionization triggering needle, the air outlet of the gas circulating path, an end plate at the right side of the chamber and an end plate at the left side of the chamber. The device is characterized in that the laser discharge chamber is fixedly arranged on a sealed circulating work gas passage; electrical energy is injected by an energy-storing charge-discharge circuit so that the upper discharge electrode and the lower discharge electrode realizes even glow discharge in large area; and a plurality of pairs of upper ultraviolet light preionization triggering needles and lower ultraviolet light preionization triggering needles realize spark discharge to form the laser discharge chamber of the laser. The invention has small volume and compact structure, is convenient for repairing and installing the discharge electrode and the preionization triggering needles, leads a CO2 laser system to stably work for a long time so as to extend service life, and is fit for high-power gas lasers and pulse gas lasers.

The embodiment of the invention provides a method and device for regulating the rotating speed of an outdoor fan, and relates to the technical field of air conditioners. The method and device are used for regulating the rotating speed of the outdoor fan in time to stabilize condensation pressure under the condition of low-temperature refrigeration of an air conditioner, so that the air conditioner is in a stable state. The method comprises the steps that whether the air conditioner is in a low-temperature refrigeration mode or not is determined; if it is determined that the air conditioner is in the low-temperature refrigeration mode, whether the temperature of an outdoor coil pipe is larger than first preset temperature and smaller than second preset temperature or not is detected; if the temperature of the outdoor coil pipe is larger than the first preset temperature and smaller than the second preset temperature, the current rotating speed of the outdoor fan is kept; if the temperature of the outdoor coil pipe is smaller than the first preset temperature, the current rotating speed of the outdoor fan is reduced to first rotating speed, and the first rotating speed is higher than or equal to the first preset rotating speed; and if the temperature of the outdoor coil pipe is larger than the second preset temperature, the current rotating speed of the outdoor fan is increased to the second rotating speed, and the second rotating speed is lower than or equal to the second preset rotating speed.