20results about How to "Avoid irreversible damage" patented technology

The application discloses a dry-type transformer with high-temperature protection function, which comprises a base assembly and a regulation mechanism, a shell component is arranged on the top side of the base assembly through bolt assembly, an opening and closing assembly is arranged on one side of the shell component through plug-in connection, and a power transformation mechanism is arranged on the inner top side of the shell component through adhesion. The device is mainly characterized in that the regulation mechanism is arranged in the shell component, the temperature of the working state of the device is sensed by a temperature sensor of the device, a signal is transmitted to the regulation mechanism, power is output by an internal motor to drive the meshing transmission gear set, the screw rod set is driven to operate, the size of the opening is adjusted by changing the position of the adjusting plate and the sleeve cabin, under the action of the heat dissipation fan of the heat dissipation component, the high-temperature air in the device can be discharged from the device in time, so that the effect of slow cooling is achieved, and the irreversible damage of the power transformation mechanism caused by the too fast cooling range is avoided.

The utility model relates to the technical field of millet winnowing, in particular to winnowing and screening integrated sorghum rice deslagging equipment which comprises a machine body, a screening mechanism, an air supply mechanism and a collecting mechanism, and the screening mechanism comprises a screen, a moving block, a rotating wheel and a motor; the multiple screens are arranged in the machine body in the radial direction. The moving blocks are arranged at the two ends of the screen and are in rigid connection with the screen, and moving grooves are formed in the moving blocks. The rotating wheels are arranged at the two ends of the screen, inserting rods are arranged on the rotating wheels, the rotating wheels at the two ends of the screen are rigidly connected through the inserting rods, and the inserting rods are inserted into the moving grooves. When the rotating wheel rotates, the screen is in a vibration state, and at the moment, the screen can screen the sorghum rice; the motor is used for driving the rotating wheels to rotate and arranged on the outer wall of the machine body and drives other rotating wheels to rotate through a transmission belt. The device reduces the equipment maintenance cost and the shutdown frequency, prolongs the service life, provides stable equipment support for large-scale sorghum rice deslagging operation, and enhances the toughness of an industrial processing chain.

The invention relates to a multi-station welding center and method for valve faucet production and machining, and belongs to the technical field of welding equipment. Comprising two welding mechanisms which are arranged side by side, a first electric sliding rail is installed on the inner wall of the bottom of each welding mechanism, a laser welding machine is installed on the top of each first electric sliding rail, a first installation plate is installed on the top of one side of each welding mechanism, and a second installation plate is installed on the top of the other side of each welding mechanism. Double stations are arranged for parallel operation, welding wires are accurately guided through the 35-degree bending frame and the alignment port, and the welding wires are prevented from being damaged by being matched with a flexible wire pressing structure; the wire pressing and air injection linkage design is innovated, protective gas is automatically sprayed during wire pressing, sealing and leakage prevention are achieved during non-working, and the welding defects are reduced through heating wire preheating; a plurality of servo motors and a translation table precisely adjust workpieces, rotation is driven to achieve continuous precise welding of special-shaped welding seams, and the efficiency and quality are improved through full-process automation.

The utility model discloses a switch direct-current power supply with a filtering anti-burning circuit, which mainly solves the problem that the existing switch power supply is easy to short-circuit and cannot be used normally. The switch direct-current power supply comprises a full-bridge rectifier D connected in series with the input end of an alternating-current power supply, a power-on protection circuit connected with the input end of the alternating-current power supply, a surge protection circuit connected with the full-bridge rectifier D, a filtering anti-burning circuit connected with the surge protection circuit, and a short-circuit protection circuit connected with the filtering anti-burning circuit, and the direct-current output end is connected with the short-circuit protection circuit. Through the above design, the switch DC power supply effectively solves various unstable factors, such as voltage fluctuation, short circuit and surge, possibly encountered by a traditional DC power supply in a complex line and a severe environment through the accurately designed circuit assembly, thereby substantially improving the operation stability and safety of electronic equipment.

This invention discloses a photovoltaic connector terminal based on copper-aluminum friction welding and gradient plating, relating to the field of connector technology. It includes a male connector and a female connector. The male connector contains a copper-aluminum male terminal, and the female connector contains a copper-aluminum female terminal. The contact ends of the copper-aluminum male and female terminals are made of copper. A nut is installed at one end of both the male and female connectors. An overheat protection component is installed inside the nut. The overheat protection component includes: multiple sets of elastic clamping elements equidistantly distributed in a circumferential pattern within the nut; and a thermistoric plastic ring, which is annular and surrounds the outer side of the elastic clamping elements. When heated, the thermistoric plastic ring expands and can compress the elastic clamping elements. This invention automatically separates the male and female terminals at high temperatures, reducing the possibility of irreversible damage to the connector and photovoltaic lines due to overheating, reducing edge wear on the connecting wires, and extending the service life of the photovoltaic module.

The invention discloses a temperature and humidity regulation and control system and method for cigar tobacco alcoholization. The method comprises the following steps: collecting and storing temperature and humidity rhythm data corresponding to natural temperature and humidity fluctuation characteristics of cigar tobacco in a dry season and a rainy season; calling corresponding temperature and humidity rhythm data, calculating a bias coefficient, generating a corresponding coordinated regulation and control instruction sequence set to drive an execution unit to realize dynamic coordinated regulation of temperature and humidity, and generating a corresponding temperature and humidity joint control rule; the current season is compared and judged, temperature and humidity rhythm data are automatically loaded, a smooth transition regulation and control program is executed before season alternation, and meanwhile corresponding cigar tobacco alcoholization temperature and humidity regulation and control work is called and executed; real-time temperature and humidity parameters and a condensation state are monitored in real time, when the real-time temperature and humidity parameters are detected to exceed the limit or a condensation signal is detected, sound-light alarm, remote pushing and emergency regulation and control operations are triggered immediately, and meanwhile, whole-process data are recorded for backtracking the cigar tobacco alcoholization process. The cigar tobacco alcoholization temperature and humidity regulation and control efficiency can be improved.

The application discloses an abnormality monitoring method and system of a fuel cell stack. The operation process of the fuel cell stack is divided into an open circuit stage with no load connected, an activation polarization stage with low load started, and a normal operation stage with high load started. The abnormality monitoring method comprises the following steps: in the open circuit stage, the open circuit voltage of the battery is collected in real time, if the open circuit voltage is higher than a first set value for a continuous preset number of times, it is judged that the open circuit stage is abnormal, and a pre-warning prompt is triggered; in the activation polarization stage, the output power slope of the stack is calculated, if the power slope is less than a second set value within a specified time, it is judged that the activation polarization stage is abnormal, and a preset action is performed. The technical scheme of the application can monitor different stages of the fuel cell stack, improve the fault disposal efficiency, and increase the safety and stability of the stack operation.

The invention provides a multi-layer quantum dot film and a preparation method and application thereof.According to the preparation method of the multi-layer quantum dot film, layer-by-layer deposition and a light / heat double-trigger mild cross-linking strategy are combined, and rapid cross-linking curing is achieved through low-temperature (smaller than or equal to 100 DEG C) or low-dose light irradiation; irreversible damage of a quantum dot crystal structure or film deformation can be avoided, the method is suitable for ensuring flexible substrates and large-area preparation, and the thickness of the film is precisely controllable within the range of 50-500 nm; the thin film is uniform and compact, the AFM surface roughness is smaller than 3 nm, precise, high-quality and rapid preparation of the short wave infrared (SWIR) quantum dot thick film is achieved, and when the prepared thin film is applied to a photoelectric device, high detection rate (for example, the detection rate of a photoelectric detector reaches the 1012 Jones magnitude) and excellent long-term environment stability can be achieved.

The application discloses a kind of active short circuit control circuit and its device, control method, system and vehicle, circuit is powered by whole vehicle low-voltage power supply and whole vehicle bus, specifically includes: by controlling the state of own switching device, realize the control of motor, microcontroller, for output motor control signal;Driving module is electrically connected between power module and microcontroller, further include: microcontroller monitoring module, overvoltage monitoring module and active short circuit processing module.The application is improved by active short circuit control circuit, when either of microcontroller fault and bus voltage overvoltage occurs, active short circuit state can be triggered, and completely unnecessary to consider whether low-voltage side circuit is fault, when microcontroller itself appears fault and leads to motor control signal invalid, when microcontroller appears software failure, power failure and the like exception, send fault signal to active short circuit processing module, avoid irreversible damage of whole vehicle system caused by reverse electromotive force too high.

The application provides a kind of active penetration depth testing device and method of penetration crystalline waterproof material, belongs to penetration testing technical field, the active penetration depth testing device of penetration crystalline waterproof material, comprising: installation cabinet, driving part, water injection equipment, gas pressurizing device, placing piece and sealing cover, the raw material control sample and experimental test sample are placed in corresponding placing groove in the application respectively, the sealing cover is precisely attached with placing piece using driving part, and independent sealing environment of each station is constructed with sealing groove and sealing strip, then water or gas is injected into groove by water injection equipment or gas pressurizing device to implement pressurized penetration, so that the accurate quantification and nondestructive testing of waterproof material penetration depth are realized without destructive cutting sample, which fundamentally avoids irreversible damage to sample caused by traditional testing means.

This invention provides a hydrogen pipeline damage state detection system and method based on nonlinear ultrasound. The system's nonlinear ultrasonic detection device includes a signal excitation module and a waveform receiving module. The signal excitation module uses pulsed ultrasonic signals to ultrasonically excite the test sample, achieving non-contact ultrasonic propagation to acquire the vibration signal of the detection response. The waveform receiving module analyzes the nonlinear response waveform information. The feature parameter calculation module is configured to calculate state feature parameters based on the nonlinear response waveform information. The evaluation matrix formulation module establishes hydrogen damage identification criteria based on the correlation between state feature parameters and hydrogen damage status. Furthermore, the hydrogen damage assessment module comprehensively evaluates and provides early warning of the pipeline's hydrogen damage status based on the hydrogen damage identification matrix combined with the state feature parameters of the detection response. This approach overcomes the limitations of existing technologies in terms of application scenarios and accuracy, providing a comprehensive and reliable evaluation of hydrogen damage status.

The application discloses a power iron tower deicing device, relates to the technical field of power iron towers, and comprises a guide rail and a tower body, a breaking hammer is arranged on the guide rail, and a mounting assembly is arranged on one side of the guide rail close to the tower body; a propelling assembly is arranged in the guide rail; a reciprocating assembly is arranged in the guide rail; an adjusting assembly is arranged in the guide rail; a connecting assembly is arranged on the outer wall of the guide rail; the propelling assembly comprises a rack, the outer wall of the rack is fixedly connected with the inner wall of the guide rail, and a sliding bar is slidably connected with the outer wall of the guide rail. Through the arrangement of the propelling assembly and the reciprocating assembly, the power iron tower is rapidly deiced, the propelling assembly can drive the reciprocating assembly to move at a constant speed along the iron tower component, and in cooperation with high-frequency reciprocating hammering, the continuous removal of long strip-shaped ice cover can be completed at one time, so that the cleaning efficiency of the power iron tower is improved; meanwhile, the linkage of the propelling assembly and the reciprocating assembly can reduce manual intervention, and the operation complexity and physical consumption are reduced.

The present application relates to the technical field of surgical knives, and discloses a trabeculectomy knife with adjustable knife distance, which comprises a knife handle, a knife rod connected with the knife handle, and a knife head connected at the end of the knife rod, wherein the knife head is boat-shaped, has a knife tip and two side edges, the rear sections of the two side edges are connected and the front ends thereof meet at the knife tip, the knife head has a concave cavity, the concave cavity is provided with a chevron-shaped gap for separating the knife tip, a pair of parallel first sliding grooves are arranged in the side wall of the concave cavity, an arc-shaped plate is slidably arranged in the first sliding grooves, and the two parallel edges of the arc-shaped plate are respectively clamped in the two first sliding grooves. The trabeculectomy knife can realize mode switching of the knife head and width adjustment of the side edges by single-handed holding, the big thumb can accurately control power transmission by rotating the knob, the friction fit of the threaded transmission and the wedge structure ensures smooth movement without slipping, and the operation difficulty is reduced without the need for additional instrument assistance or double-handed operation.

The application provides a distributed control system and method of an ion cyclotron wave source transmitter, which comprises a master control unit, a plurality of power supply interface units and a quick interlock protection unit independent of the master control unit. Each power supply interface unit adopts a unified hardware template, integrates a voltage / frequency conversion circuit, a frequency / voltage conversion circuit and an optical fiber transceiver to realize signal isolation transmission in a strong electromagnetic environment; the quick interlock protection unit comprises a hardware comparator network, a complex programmable logic device and a solid-state controller, the protection response time is not more than 20 microseconds, and hierarchical shutdown logic is configured to perform differentiated shutdown combination according to the fault type of a filament, a grid, an anode or a grid power supply. The application solves the problems of poor anti-interference, slow protection response, non-uniform interface and lack of hierarchical shutdown of the existing control system, and is suitable for a high-power radio frequency heating system of a nuclear fusion device.

The invention relates to a fuel cell stack cold start device and a control method, the fuel cell stack cold start device comprises a low-temperature environment box, a fuel cell stack is arranged in the low-temperature environment box, and a low-temperature environment is formed in the low-temperature environment box; the air circulation system is configured to provide air for the galvanic pile through the test bench; the hydrogen circulation system is configured to provide hydrogen for the galvanic pile through the test bench; the cooling liquid circulation system comprises a large circulation loop and a small circulation loop which are connected in parallel between a cooling liquid inlet and a cooling liquid outlet of the electric pile, and the cooling liquid selectively flows in the small circulation loop and the large circulation loop; and the large circulation loop is connected with the test bench and is configured to heat the cooling liquid through the test bench until an electric pile starting success condition is met when it is detected that cold starting is not successful. According to the method, the cold start control strategy of the electric pile is optimized, the start time of the cold start is shortened, irreversible damage caused by quick freezing after the cold start of the electric pile is not successful can be prevented, and the cold start short-range control difficulty can be reduced.

The invention discloses a circuit-level simulation method for single event upset of an NAND type flash memory array, which comprises the following steps of: constructing a flash memory array circuit-level model, and arranging equivalent floating gate type MOS (Metal Oxide Semiconductor) tubes in the model in a layered manner; the charge state of each storage unit on the bit line is obtained by detecting the drain current state of the first equivalent floating gate type MOS tube on each bit line layer; bombarding the floating gate type MOS tube according to different high-energy particles to obtain a threshold voltage, and taking the threshold voltage as a threshold voltage in an equivalent floating gate type MOS tube; when the standard reading voltage is applied, the current of the drain electrode of the equivalent floating gate type MOS tube at the tail end of each bit line layer is monitored, and when the current amplitude exceeds a preset logic judgment threshold value, it is confirmed that a single event upset event occurs in the storage unit. According to the method, the equivalent circuit model is constructed for the floating gate type MOS tube, simulation can be realized only by equivalence of two key parameters in the floating gate type MOS tube, and the simulation efficiency is improved.

The invention relates to the technical field of biomedical detection, in particular to a biomarker for diagnosing idiopathic membranous nephropathy and application. The invention discloses a biomarker for diagnosing idiopathic membranous nephropathy, and the biomarker is selected from at least one of D-2-Hydroxyglutaric acid, Geranyl Diphosphate and Mucronaldehyde. The biomarker is used for diagnosing idiopathic membranous nephropathy, and the biomarker is used for diagnosing idiopathic membranous nephropathy. In patients with idiopathic membranous nephropathy, the expression levels of D-2-Hydroxyglutaric acid and Geranyl Diphosphate are obviously reduced, the expression level of Mucronusol is obviously increased, and the D-2-Hydroxyglutaric acid and Geranyl Diphosphate have statistical differences compared with a healthy control group. Comprehensive evaluation shows that the diagnosis accuracy can be remarkably improved through combined detection of the three biomarkers, and a non-invasive, efficient and reliable screening tool can be provided for clinical diagnosis.

The utility model provides a vibrating screen online monitoring system, and belongs to the technical field of vibrating screens. The vibrating screen on-line monitoring system comprises a vibration monitoring module, a frequency-voltage conversion module, a comparison module, a vibration alarm module and a protection module. The vibration monitoring module is configured to monitor the vibration state of the vibration screen, the output end of the vibration monitoring module is connected with the input end of the frequency-voltage conversion module, the output end of the frequency-voltage conversion module is connected with the input end of the comparison module, and the output end of the comparison module is connected with the control end of the vibration alarm module; the control end of the protection module is connected with the output end of the comparison module, the first end of the protection module is connected with a power supply, and the second end of the protection module is connected with the power supply end of the vibrating screen. Efficient and stable operation of the vibrating screen can be guaranteed.

This application relates to the field of financial services technology, and particularly to a method, apparatus, device, and medium for stability testing of a financial services system. The method determines N target interfaces and their service requirements based on historical business service statistics over a preset period and all used interfaces. It then determines a service range for each service requirement, intersects all service ranges to obtain a service intersection range, adjusts the time base value of each node in the service link of the target interfaces to reflect the deviation, monitors the service performance of the target interfaces after each adjustment, and determines the steady-state value as the deviation value corresponding to the adjustment when the service performance just exceeds the service intersection range. Based on the steady-state value, the financial services system is tested. This method determines a safe range of stability based on system performance, thus preventing irreversible damage to the system during the introduction of chaos engineering blasting experiments, and ensuring a certain level of stability for the system service.

This invention discloses a low-temperature activated adhesive and its preparation method, belonging to the field of adhesive technology. The adhesive, by weight, mainly comprises 8-10 parts of polycarbonate polyol with a number-average molecular weight of 3000, 1-3 parts of polycarbonate polyol with a number-average molecular weight of 2000, and 5-7 parts of bio-based PTMEG with a carbon content of 60-70%, combined with a chain extender, a compound isocyanate, a catalyst, a terminator, n-butyl polymethacrylate, and an environmentally friendly solvent. This invention, through the synergistic regulation of the polyol compound system, specific bio-based PTMEG modification, and tackifying components, enables the adhesive to achieve an activation temperature as low as 38℃, and complete activation below 50℃. It also exhibits excellent initial tack, peel strength, and heat aging resistance, perfectly meeting the bonding requirements of heat-sensitive footwear materials. The preparation process is mild and controllable, environmentally friendly, and easy for industrial-scale production.