690results about How to "Guaranteed operational reliability" patented technology

The invention discloses a lifting-adjustable processing device with a movable processing head. The processing device is used for machining a workpiece (200), and comprises a rack (9), a movable frame (8) and a connecting part (89) which is fixed below the movable frame (8) and is used for connecting the processing head (890), wherein a screw (6) which is driven by a motor (2), is movably mounted on the rack (9), and extends to the left and right penetrates through the movable frame (8) through extension; the movable frame (8) is supported on a rail cross beam (5) which is fixedly connected with the rack (9) and extends to the left and right in a sliding manner; a left screw block group and a right thread block group are arranged in the movable frame (8); and the left thread block group comprises a left group front thread block (32) and a left group back thread block (31).

The invention discloses a method for realizing power-grid equipment failure prewarning through big data mining technology. The method includes the following steps: acquiring main factors causing a power-grid equipment failure through historical failure record and defect data analysis; performing correlation analysis on safety accident factors; building a risk evaluation model through correlation among historical experience, basic data and factors; performing model selection on application scenes of power-grid safety accidents, and performing data preparation, data screening and data mining according to the scenes; graphically displaying data after being analyzed through a decision making platform, and verifying the data. By performing big data analysis on the historical failure record and defect record, tendency that the power-grid equipment is in a failure is prejudged, and safety prewarning is sent out, so that probability that a power grid is in a safety accident is lowered, and running reliability of the power grid is guaranteed.

The invention provides a hybrid type rapid direct current breaker, comprising: a main flow branch, a current transferring branch and an energy consumption branch. All are connected in parallel. The main flow branch comprises a rapid mechanical switch unit and a main branch sub-module unit. The two units are in series connection. The current transferring branch comprises valve module units in successive cascade connection with each valve module unit comprising a plurality of semiconductor modules in series connection. The energy consumption branch comprises energy consumption components in successive cascade connection. According to the invention, the design of the breaker structure is such a design featuring the electrical topology corresponding to modularization. This means that for the application requirement of different voltage grades, the structure can be expanded to do so. As the breaker adopts a single platform supporting structure, all functional units can be integrated onto the platform, therefore, making the equipment highly integrated, small in size, and strongly resistant to earthquakes. Highly reliable and flexible in structure, better electric compatibility can be achieved. With the breaker, it is possible to rapidly cut off the current in fault when the direct current system meets a fault.

The invention provides a self-learning method and a self-learning device of a hybrid electric vehicle and a clutch of the hybrid electric vehicle, which can automatically finish self-learning of a key position of the clutch so as to simplify an adjusting process. The self-learning method comprises the following steps: judging whether a self-learning condition is met or not; if so, controlling the clutch to be separated and combined; recording positions where the clutch is completely separated, is completely combined and starts to slide and wear, and taking the positions as a complete separation point, a complete combination point and a sliding and wearing point. The self-learning device comprises a position sensor which is in signal connection with a controller, wherein the controller is provided with a judging module for judging whether the self-learning condition is met or not, and controlling the separation and combination of the clutch when the self-learning condition is met, so that the self-learning of the complete separation point, the complete combination point and the sliding and wearing point are realized; the position sensor is used for detecting the position of the clutch and transmitting position information to the controller; the controller is provided with a storage module for storing the position information.

The invention relates to a transformer short-circuit fault comprehensive diagnosis method. The method is technically characterized by including the steps of checking a device once after the short-circuit fault happens to a transformer, analyzing the running working conditions and the protection action conditions to obtain the fault current, the working time and short-circuit process parameters, conducting conventional electrical experimental analysis and oil chromatogram experimental analysis so that whether faults or defects already exist in the transformer or not can be analyzed and the corresponding degrees and positions can be analyzed, conducting the winding deformation test so that whether deformation or concave-convex deformation happens to windings or not can be judged, demonstrating the short-circuit resistant capacity, and comprehensively judging the short-circuit fault of the transformer. By combining technical means of multiple subjects and multiple majors, the purpose of accurately evaluating the state of the transformer after the transformer bears short-circuit impact is achieved, the analysis time of technicians is greatly shortened, the result analysis accuracy is improved, the safe and stable running of the transformer and a power grid is ensured, and the running reliability and effectiveness of the power grid are ensured.

The invention discloses a magnesium alloy plate rolling parameter monitoring and fault diagnosing system and method. The system is composed of a work roll monitoring module, a main motor monitoring module, a vibration and noise monitoring module, a rolling pressure monitoring module, a rolling temperature monitoring module, a roll gap interval monitoring module, a piece rolling speed monitoring module, a work roll way revolving speed monitoring module, a data processing module and a rolling mill, technological parameters such as rolling force and the rolling temperature and equipment parameters such as the motor current are monitored at the same time, the operating state of equipment is provided according to the parameters, and temperature prediction and fault diagnosis are conducted. Operating data of the equipment are recorded, a temperature monitoring model and a fault diagnosis model are completed, and an intelligent monitoring and diagnosing system with self-learning capacity is set up. A basis is provided for the design of the magnesium alloy rolling equipment, and the magnesium alloy plate rolling parameter monitoring and fault diagnosing system and method has guiding significance for the design of rolling equipment. The magnesium alloy plate rolling parameter monitoring and fault diagnosing system and method is strong in industrial applicability and has very good application prospects.

The invention provides a modularized box type charging and battery swapping station used for replacing a battery of an electric car. The charging and battery swapping station comprises a central monitoring room 1, a battery swapping robot 2 and a charging and battery swapping box 3, wherein the central monitoring room 1 is used for monitoring the charging and battery swapping station, the battery swapping robot 2 is located between the charging and battery swapping circuit 3 and the electric cars provided with batteries to be replaced, and the battery between the electric cars provided with batteries to be replaced can be replaced; and a battery storage rack 301, a battery charger cabinet 302, a monitoring cabinet 303, a distribution cabinet 304, a temperature control system 305 and an access path 306 are arranged in the charging and battery swapping box 3. The modularized box type charging and battery swapping station, provided by the invention, has the advantages of strong adaptability, flexible configuration and expansibility, small floor space, high working efficiency, short construction period, benefit for large-scale popularization and construction, high automation degree, smaller device maintenance amount, simple structure and low fault rate.

The invention discloses a method for achieving high reliability of key equipment. The method comprises the following steps: deploying a first server and a second server; appointing an IP address, namely a floating IP shared by the two servers; mutually monitoring states of the two servers through heartbeat, and performing real-time data synchronization; when the first server is abnormal, updating the floating IP to the second server from the first server, and taking over the service of the first server from the second server through the floating IP.

An initiator assembly capable of guaranteeing the assured operation of a gas generator by assuring the structure of connection between a metal collar and an electric initiator to prevent the entry of moisture into the gas generator, comprising the electric initiator and the metal collar surrounding at least a part of the electric initiator formed integrally with each other with resin, wherein at least either of an annular projected part and a tubular projected part provided in a direction that surrounds the electric initiator is formed on the metal collar, and the projected part is covered with the resin.

The invention discloses a system and a method for monitoring high-temperature corrosive atmosphere of a water cooling wall of a boiler.The system for monitoring the high-temperature corrosive atmosphere of the water cooling wall of the boiler comprises a primary flue gas dilution sampling unit, a secondary flue gas dilution sampling unit, a diluted flue gas analyzing unit, a system reverse blowing unit and a compressed air unit.The system and the method for monitoring the high-temperature corrosive atmosphere of the water cooling wall of the boiler have the advantages that components of flue gas can be monitored at the normal temperature, all valves are arranged on compressed air pipelines, accordingly, influence of high temperatures and dust can be ingeniously prevented, long-term continuous and reliable running of the system can be guaranteed, the system and the method have cost merits, and the running safety and economic efficiency of the boiler of a power station can be obviously improved.

The invention discloses an abrasive belt polishing finisher in the field of mechanical technology, which addresses inconvenient operation of the existing polishing finishers. The abrasive belt polishing finisher includes a motor and a connection support. The central section of the connection support is fixedly connected with the output shaft of the motor. Several self-rotable connection support finishing wheels are provided around the connection support. The curve surface of the rim of each of the support finishing wheels has a different curvature. Each connection support finishing wheel is distributed on the same circle centered on the output shaft of the motor. The connection support is driven by the motor into rotation to press and position one of the connection support finishing wheels against the back of the abrasive belt in the polishing finisher. The abrasive belt polishing finisher could satisfy continuous polishing treatment for different curved surfaces.

The invention discloses a system and method for evaluating reliability of a machine tool. The system comprises a terminal information processing module, a data acquisition module, a vibration monitoring module, a microscopic optical module and an image processing module. Based on the self-learning and self-adaptive functions of an artificial neural network, historical data are used as a fitting sample to monitor performance parameter indexes affecting the reliability of the tool during the machining process in real time, such as vibration signals, current signals, sound wave signals, the wearing capacity and the processing roughness. By monitoring the running state of the tool in real time, feeding back real-time reliability information of the tool, and estimating the residual service lifeof the tool, a processing enterprise can make preventive measures in advance, the loss is reduced, and the overall processing efficiency is improved.

A uniform feeding and single row sorting device for a multi-channel fruit and vegetable sorting machine, at least including a brush, a feeding conveying device, an anti-clogging push rod and a fruit and vegetable single row sorting device; the brush is installed above the feeding conveying device; the feeding conveying device It includes at least a speed-regulating motor and two or more feeding conveyor belts; the fruit and vegetable single-row sorting device is installed horizontally below the feeding conveyor device and is vertical to it, and each fruit and vegetable single-row sorting device is installed at the same height and equidistance, and its number is the same as The feeding conveyor belts are the same, and the fruit and vegetable single row sorting device at least includes a left conveyor belt and a right conveyor belt arranged in a V shape with different speeds; feed end. The invention has a compact structure, realizes uniform feeding of fruits and vegetables in the multi-channel sorting machine and rapid single-row sorting, can effectively prevent fruits and vegetables from being blocked at the feeding end of the single-row sorting device, and improves the efficiency of fruit and vegetable sorting.

The invention provides a diagnosis device for corrosion of an earth screen of a large-size transformer substation. The diagnosis device comprises a distribution type collection box, a signal collection device, a movable calculation PC (personal computer) and a 3G (3rd Generation) wireless communication terminal, wherein the distribution type collection box is formed by a box body, a protection cover, binding posts and a measuring lead wire, wherein the protection cover detachably covers the box body; a plurality of binding posts are vertical in a mutually-insulating manner and pass through a bottom plate of the box body; the measuring lead wire is a two-core flexible lead core; one end of the measuring lead wire is electrically with the lower ends of the binding posts; and the other end of the measuring lead wire is welded with a lead-up wire of a grid node of the earth screen. The diagnosis device and the diagnosis method for the corrosion of the earth screen of the large-size transformer substation can be widely applied to corrosion fault detection of the earth screen of the transformer substation which is put into operation and are particularly suitable for the large-size transformer substation which has a larger occupied area and higher safety requirements. Furthermore, the diagnosis device and the diagnosis method for the corrosion of the earth screen of the large-size transformer substation can also be widely applied to other systems with the earth screens, such as steel, chemical engineering, a power plant and the like and have extremely great required amount and an extremely wide application prospect.

The invention discloses a thin oil lubrication bearing device of a motor for a coal mine main ventilator. The thin oil lubrication bearing device comprises a rotating shaft. A bearing front cover, a first bearing, a second bearing and a bearing back cover are arranged on the rotating shaft in sequence. A bearing base is arranged between the bearing front cover and the bearing back cover in a clamping mode. The bearing front cover is arranged on the front side of the first bearing in a covering mode. A front cover cavity is formed in the bearing cover. An outer partitioning ring is clamped between an outer ring annular body of the first bearing and an outer ring annular body of the second bearing. An oil inlet channel and an oil returning channel communicated with the front cover cavity are arranged in the bearing front cover. The bearing base is provided with a middle oil inlet channel and a middle oil returning channel. The outer partitioning ring is provided with a radial oil inlet. The oil inlet channel, the middle oil inlet channel, the oil inlet, an oil returning opening, the middle oil returning channel, the front cover cavity and the oil returning channel are communicated in sequence. The thin oil lubrication bearing device of the motor for the coal mine main ventilator is good in sealing performance, high in operation reliability and capable of providing continuous and sufficient lubrication for a rolling bearing.

A power supply apparatus with stable power supply and a moving roller is disclosed. The power supply apparatus comprises a main body (9) and a plug (6) which is inserted into a jack of the main body (9). A locking and unlocking motor (91) is arranged in the main body (9). A rotor of the locking and unlocking motor (91) is connected with a screw (95) in a power connection mode. The screw (95) forms screw-thread fit with a screw hole of a movable component (8) in the main body (9). A stator of the locking and unlocking motor (91) is fixedly connected to a power supply guide rod (74) which forms sliding fit with and slidingly passes through a slide hole arranged in the movable component (8). The power supply guide rod (74) is used for jointing a power supply hole (61) in the plug (6) which is inserted into the jack of the main body (9) so as to carry out power supply.

The invention relates to a preparation and evaluation method of transformer characteristic gas standard oil samples. By preparation of standard gases with different concentrations, preparation of a blank oil sample, thorough mixing of the standard gases with the blank oil sample and other steps, the preparation method realizes preparation of the transformer characteristic gas standard oil samples. The evaluation method utilizes the standard oil samples with different concentrations prepared by the method, and evaluates the gas chromatography performance including the minimum detection concentration, data repeatability and accuracy, and evaluates a gas chromatograph, thus realizing comprehensive evaluation of the transformer characteristic gas standard oil samples. The method provided by the invention can prepare standard oil samples with set characteristic gas concentrations at one time, and also can improve the quality of the gas chromatograph so as to ensure the device operation reliability and data accuracy.

The invention relates to an oil-oil bushing cable outlet transformer test method without head removing. The method is characterized by comprising the following steps: high-voltage side direct-current resistance test: the high-voltage side direct-current resistance is tested at a grounding switch after the grounding switch is closed and a grounding connection piece is opened; test of the insulation resistance, the absorption ratio and the polarization index of a high-voltage side to a low-voltage side: the test is carried out at a transformer high-voltage neutral point bushing by a tramegger; test of the dielectric loss and the capacitance of the high-voltage side to the low-voltage side: the test is carried out by applying alternating-current high voltage to the transformer high-voltage neutral point bushing; and test of the dielectric loss and the capacitance of each bushing at the high-voltage side: a high-voltage dielectric loss meter and a forward connection method are adopted, alternating-current high voltage is applied to the transformer high-voltage neutral point bushing, and signals are extracted from the end screen of the bushing of each phase to carry out testing. The equipment power-off time is greatly reduced, the test efficiency is improved, safe and stable operation of transformers and a power grid are ensured, and the operation reliability of the power grid is ensured.

The invention discloses a production process of an insulation pull rod. The production process comprises an insulation pipe blank pipe curing and molding phase, an insulation pipe blank pipe machining phase and a connector bonding phase, wherein in the insulation pipe blank pipe curing and molding phase, fiber materials are dried in vacuum; resin is impregnated under a vacuum environment and the fiber materials are subjected to primary curing; after de-molding, the fiber materials are subjected to secondary curing to obtain an insulation pipe blank pipe; the insulation pipe blank pipe is machined; the insulation pipe blank pipe is bonded with a connector by adopting a heat-expansion and cold-contraction principle; and finally, the insulation pull rod is obtained. According to the production process of the insulation pull rod, the technical defects of a production process of the insulation pull rod that air gaps, micro-cracks, concentrated stress and layering are easy to generate, the connection of the connector is not reliable, the air gaps are easy to generate in a bonding layer of the connector and the insulation pipe and the like are overcome.

Based on traditional DC brushless motor, the disclosed structure integrates pressure compensation device with main body of electrical motor. The pressure compensation device is composed of up capping, spring, piston, contact switch, and body case of electrical motor. Being installed inside of the body case, the piston and the case form clearance fit. Spring is installed between the piston and the up capping. Being inside the motor, the contact switch is under the piston. The structure is capable of detecting and controlling running state of electrical motor, and ensuring sealing performance of electrical motor underwater operational environment. Advantages are: almost no limited depth of underwater operation, reliable performance of underwater electrical motor, compact structure, low failure rate, and good security. The invention is applicable to underwater robot, underwater operation tools and relevant industries of aquatic product.

The invention discloses a dynamically-adjusted module type multi-split air conditioner control method. The method comprises the following steps that S1, when a multi-split air conditioner is electrified and started, the indoor unit capacity requirements Q-indoor unit generated in the electrifying process are calculated and confirmed; S2, the operation states of all outdoor units are detected and judged, the output capacity capable of being provided by each outdoor unit in the normal state is calculated and confirmed, then all the outdoor unit combination modes capable of meeting the capacity requirements Q-indoor unit are obtained, wherein each combination mode comprises at least one outdoor unit; S3, all the combination modes meeting the requirements are classified on the basis of the number of the outdoor units needing to be started; S4, the combination mode with the optimal energy efficiency ratio and the minimum category is selected, and then the corresponding outdoor units are started to perform weighted average operation; and S5, in the operation process, the indoor unit capacity requirements Q-indoor unit are monitored and calculated in real time, the indoor unit capacity requirements are dynamically monitored, the proper combination mode is dynamically selected, and the corresponding outdoor units are started to perform weighted average operation according to the reselected combination mode.

The invention relates to a distance adjustment tool for assembly of a circuit breaker and an assembly for a crank arm box of the circuit breaker. The distance adjustment tool comprises a crank arm limitation structure which is detachably assembled on the corresponding crank arm box during use for limiting the swinging of an input crank arm, the distance adjustment tool also comprises an adjustment rod arranged on a corresponding switching brake bar in series, and an adjustment screw rod is arranged on the adjustment rod and is in threaded connection with the switching brake bar for adjusting the distance between a corresponding movable contact and a fixed contact. The distance adjustment tool for the assembly of the circuit breaker, provided by the invention, can be used for adjusting the distance between the movable contact and the fixed contact and ensuring that inclined angles of input crank arms of different phases are consistent.

The embodiment of the invention relates to a high-frequency induction wind tunnel flow field non-equilibrium diagnosis system. The system comprises a test device, a first diagnosis unit and a second diagnosis unit. A collimator of the first diagnosis unit emits a laser signal, and the laser signal passes through a flow field of the test device and then is transmitted by the test device, and the transmitted laser signal is received by a receiver of the first diagnosis unit so as to obtain a translational temperature in the flow field. The second diagnosis unit collects radiation luminescence inthe flow field to obtain an electronic temperature in the flow field in the test device. The system also comprises a signal trigger unit for controlling the first diagnosis unit and the second diagnosis unit. Therefore, synchronous measurement of the electronic temperature and the translational temperature in a high-frequency induction plasma heater and the high-temperature flow field after passing through a spray pipe can be realized, and quantitative evaluation of a non-equilibrium characteristic of a high-frequency induction plasma heating wind tunnel flow field can be further realized.

This invention provides a door lock device for the vehicle, which ensures the reliability of the action, reduces the numbers of the parts, and simples the assembly operation. One end of the metal hold part has a hold section holding the external cable, the other end of which has a bended section. There arranged a protruding section between the two ends of the hold part, which acts as a pivot whenan installation of resin case is going on. The case comprises: a locking hole locked with the protruding section; a locking groove, which rotates hold part toward one direction (clockwise : as shown in figure 4) pivoted the locking position where the protruding section is locked with the locking holes. Said locking groove is locked with the bended section, the location relationship among the holdsection, the bended section and the protruding section of the hold part is as followed: when the hold part operates the vehicle door handle unit and induces reverse force from the external cable, said reverse force acts on the direction that the bended section locks with the locking groove.

The invention discloses a real-time floor detection device for a vertical elevator. The real-time floor detection device comprises a main control module, an acceleration sensor module and an infraredsensor module, wherein the acceleration sensor module and the infrared sensor module are connected with the main control module correspondingly, the acceleration sensor module detects acceleration information of running of the elevator in real time through an acceleration sensor and sends the acceleration information to the main control module, the infrared sensor module detects elevator running state information in real time through an infrared sensor and sends the elevator running state information to the main control module, and the main control module calculates the elevator real-time running state according to the received acceleration information, performs correction by using the running state information detected by the infrared sensor module, and calculates the real-time floor of the elevator through the elevator running state information obtained after correction. The real-time floor detection device has the advantages that the structure is simple, the cost is low, the detection precision is high, moreover, elevator normal running is not affected and the like.

Embodiments of the invention provide a supplier financial risk prediction method and device. The method comprises the steps of obtaining financial risk index data of a target supplier; inputting the financial risk index data into a preset convolutional neural network model, and taking the output of the convolutional neural network model as a financial risk prediction result corresponding to the target supplier; and outputting a financial risk prediction result corresponding to the target supplier. According to the invention, the supplier financial risk can be predicted through the deep learning convolutional neural network with the self-learning capability, and the accuracy of supplier financial risk prediction can be effectively improved, so that the potential risk of the supplier can beeffectively avoided, and the operation reliability of the enterprise can be ensured.

The invention provides a method for determining the peaking demand of a large-scale wind power integration system. The method comprises the following steps: generating a year-round wind power output time sequence; generating a year-round load time sequence; and building a conventional generator set status transfer sequence considering planned generator shutdown, determining the peaking demand of a large-scale wind power integration system, drawing a peaking demand curve, and doing statistics of peaking demand indexes. The method presented by the invention is simple, practical and highly operable. The problem that there is a need for generator set combination in the traditional method of status transfer sampling only considering forced generator shutdown is avoided. An accurate and effective analysis method and evaluation indexes are provided for solving the problem that the peaking capacity of a large-scale wind power integration system is inadequate. The peaking demand of a wind power integration system can be reflected directly. The operation stability and reliability of a large-scale wind power integration system are guaranteed.

The invention discloses a maximum torque current ratio control method for a position-sensorless permanent magnet synchronous motor. Based on high frequency square wave voltage injection, a high frequency square wave voltage signal is injected, and the built-in permanent magnet synchronous motor position-sensorless control and maximum torque current ratio control are achieved simultaneously, including two aspects: using the corresponding relationship between the high frequency square wave voltage and the high frequency response current to detect the convex polarity of the built-in permanent magnet synchronous motor, thereby obtaining rotor position information; decomposing the high frequency response current into a component parallel to a current vector angle and a component perpendicular to the current vector angle; and eliminating the component parallel to the current vector angle in the high frequency response current, and using the torque ripple generated by the component perpendicular to the current vector angle to realize tracking of the maximum torque current ratio operating point.

The invention supplies a minitype energy saving adiabatic fuel gas absorption air conditioning, comprising high voltage generator, low voltage generator, high temperature heat exchanger, low temperature heat exchanger, condenser, evaporator, absorption machine, air cooling machine, liquid pump and recycling pump. Residual heat of saturated cryogen of heat exchanger outlet of low voltage generator is recovered in low temperature heat exchanger, cryogen condenser and absorber liquid cooler both use air patenting method, absorber without heat exchanger in it has packing within. The heat transfer and mass transfer course is strengthened by using air patenting adiabatic absorption to divide the course into steps, and surface square of absorber is reduced, solving the problem exist in falling film of air patenting pipe and ensuring the system operating reliable and energy-saving, in addition , it avoids potential danger of refrigerant in electricity driving air conditioning, reducing electric power hill and dale difference in summer, eliminates all disadvantages exist in water cooling fuel gas air conditioning, it is safe and healthy, easy to control and has a wide use.

The invention relates to an OPGW icing thickness measuring method and a measuring device thereof. The method comprises the following steps: (1) monitoring icing condition of OPGW ground lines in a real-time manner; (2) when the thickness of the ice on the OPGW ground lines is beyond the alert thickness, de-icing alert information is sent out; (3) establishing a de-icing circuit according to the de-icing alert information; (4) carrying out de-icing operation according to the de-icing circuit; (5) monitoring and collecting de-icing temperature and progress of the OPGW ground lines; and (6) when the icing fall-off degree of the OPGW ground lines meets the requirements, de-icing operation is stopped. The technical proposal of the method and the device provided by the invention enables icing continuous measurement of the OPGW.