53results about How to "Reduce fever" patented technology

The utility model discloses a bearing penetrates cover and bearing assembly for dry -type continuous casting, this bearing penetrates cover includes: the whole is hollow's cover body of gyroid, the cover body has opposite first side and second side along the first direction, the first side forms the through -hole of variable aperture to the second side, the through -hole includes first hole section and second hole section who set up in order from the first side to the second side, the inner diameter of first hole section is less than the inner diameter of second hole section, the inner wall of first hole section is opposite and forms the sealing groove, the outer surface of cover body is provided with the lap joint, the bearing penetrates cover is used for embedding installation in the bearing seat, and the lap joint is used for abutting in bearing seat, penetrates the cover sealing piece, the cover sealing piece is metal sealing piece, and the cover sealing piece installs in sealing groove. The application can effectively improve the reliability of bearing penetrates cover when using, and then improve the service life greatly.

This invention discloses a stator assembly, a motor, a compressor, and a refrigeration device, relating to the field of induction motor technology. The stator assembly includes a stator core and stator windings. The stator core has Q stator slots, which are divided into large slots and small slots according to their cross-sectional area. The stator windings include concentrically wound main windings and auxiliary windings. The main windings have m coils, and the auxiliary windings have n coils. The main windings are numbered B1, B2, B3...B according to their winding span from largest to smallest. m The secondary windings are numbered A1, A2, A3, ... A, according to their winding span from largest to smallest. n ;B2 to B m In the stator slots where the coils are located, there is at least one single main winding slot, and each single main winding slot contains only the main winding. At least one of the single main winding slots is a minor slot; 16≦Q≦32, 3≦m≦14, 3≦n≦12. The technical solution provided by this invention is used to reduce the harmonic ratio of the motor, thereby reducing motor heat generation and improving motor efficiency.

The utility model provides a kind of high-temperature-resistant long-life ball bearing retainer, it is related to bearing retainer technical field, and it includes: hold frame body;The retainer body is annular structure, and ball hole is arranged in annular array shape on the inner wall of retainer body;Annular array shape is arranged in the through hole of the outer wall of retainer body, and the through hole is circular hole structure, and the through hole arranged in annular array shape is jointly composed of the heat dissipation structure of retainer body.Utilize nickel-based alloy high melting point (1300 DEG C above) and strong oxidation resistance, so that retainer is not easy to heat softening or oxidation corrosion failure under high temperature working condition (such as industrial kiln, aeroengine), directly prolongs the service life under high temperature environment;Through type circular through hole forms three-dimensional heat dissipation channel, cooperates the forced convection of lubricating medium (oil / gas), and internal heat is quickly taken away.For example in high-speed motor, airflow passes through through hole can make retainer temperature reduce 20%~30%, avoid local overheating to cause material failure.

The invention discloses a high-dielectric low-loss dielectric material for a high-voltage ceramic capacitor, and relates to the technical field of dielectric materials, which comprises the following steps: S1, preparing bismuth stannate; step S2, preparation of bismuth titanate; step S3, preparation of barium zirconate; step S4, compression molding and sintering; and S5, printing an electrode. The high-dielectric low-loss dielectric material for the high-voltage ceramic capacitor is high in dielectric constant and low in dielectric loss, and meets N4700 temperature characteristics and environmental protection requirements.

This invention provides a solar-powered full-spectrum frequency-division thermo-electric combined-drive air conditioning system and its control method, belonging to the field of solar heat pumps. It addresses the problems of existing solar-powered jet-compression combined refrigeration systems, which cannot effectively utilize all wavelengths of solar energy, suffer from intermittent instability during power supply, and exhibit low cooling efficiency due to excessively high compression ratios under high temperature difference conditions. During conventional cooling, the system allows selection of single-jet cooling, single-compression cooling, jet-compression combined cooling, or dual-jet-compression combined cooling based on daytime or nighttime conditions and cooling requirements, achieving stable all-weather air conditioning while saving energy. In addition to the conventional cooling mode, a dual-jet-compression cooling mode can be operated to achieve high temperature difference cooling while maintaining a constant compression ratio. It fully utilizes solar thermo-electricity for self-generation and consumption, enabling switching between jet and compression air conditioning modes to ensure all-weather air conditioning needs while achieving energy conservation and emission reduction.

The application relates to the technical field of DCS control systems, in particular to an analog quantity input system with input current limiting protection, which comprises at least one channel circuit for connecting and providing acquisition current for an external AI instrument and a sampling control circuit connected with each channel circuit; wherein the sampling control circuit is used for acquiring the voltage value of any channel circuit and controlling the switch of the channel circuit according to the acquired voltage value. The analog quantity input system with input current limiting protection can prevent the overheat damage of MOS tubes in the channel circuit, keep the channel circuit from generating less heat when overcurrent occurs and improve the reliability, compared with the prior art.

The application belongs to the technical field of soft magnetic material preparation, and particularly relates to a ferrosilicon magnetic material and a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing ferrosilicon magnetic powder and a passivation agent, and then performing primary heat treatment and cooling to room temperature at a speed of not higher than 30 DEG C / h; (2) mixing the magnetic powder obtained in the step (1) with the passivation agent to obtain passivated magnetic powder; (3) adding a first coating agent to the passivated magnetic powder to perform primary coating, and then performing secondary heat treatment; and (4) adding a second coating agent to the magnetic powder obtained in the step (3) to perform secondary coating, pressing, and then performing tertiary heat treatment. The average particle size of the first coating agent is 300 nm-1 mu m; and the second coating agent comprises colloidal particles, and the average particle size of the colloidal particles is not higher than 100 nm. The preparation method can improve the density and effective magnetic permeability of the ferrosilicon magnetic material, so that the ferrosilicon magnetic material has excellent magnetic performance, the loss is greatly reduced, heat generation is reduced, and the device is beneficial to energy saving and high efficiency.

This application discloses a playback adjustment method, device, storage medium, and program product. The method includes: acquiring playback parameters of the device, including the low-frequency energy of the audio signal played by the device, the playback volume, and the device temperature; the device includes at least two playback units; when the playback parameters meet the adjustment conditions, adjusting at least one of the power distribution and low-frequency energy of the at least two playback units; during the adjustment process, dynamically adjusting the degree of low-frequency energy suppression and the power distribution ratio based on the device temperature.

This invention discloses an energy meter with a built-in high-current relay, relating to the field of energy meter technology. The energy meter includes a meter box containing a control panel and a relay. A wiring plate is embedded in the end face of the meter box. A through hole is formed in the center of the front of the wiring plate, and wire holes are formed at both ends of the front of the wiring plate. A conical protrusion is movably fitted inside the through hole, and a main rod is fixedly connected to the outer end face of the conical protrusion. This invention overcomes the shortcomings of existing technologies, achieving efficient wiring, stable conductivity, precise clamping, and quick assembly and disassembly. It solves the problems of complex wiring, poor contact, inconvenient maintenance, and low safety in traditional energy meters, and has high social value and application prospects.

This utility model relates to a stator-rotor assembly and a powder-liquid mixing device. A stator-rotor assembly includes at least one stator and at least one rotor, the rotor rotating relative to the stator to shear the material flowing through the assembly. The structure of a single stator includes a first disc with several flow holes along the circumference on its end face for material flow. The structure of a single rotor includes a second disc with several notches along the circumference on its end face for material flow; each notch is hollowed out, thus forming independent blades between adjacent notches. By configuring the stator and rotor, the shearing consistency of the stator-rotor assembly on the material can be improved, thereby increasing the dispersion efficiency; simultaneously, the small overlap area between the stator and rotor reduces the heat generation of the stator-rotor assembly.

This utility model discloses a multi-pulse surge protection circuit and a multi-pulse surge protector. Through double ferrite shielding with a ferrite reinforcement layer and a ferrite shielding layer, the absorption efficiency of electromagnetic field leakage from lightning current can be enhanced. The ferrite shielding layer is directly grounded through the shell of the multi-pulse surge protector, forming a shielding effect on the inside of the surge protector, absorbing the remaining leakage electromagnetic field, and minimizing the heating of the shielding layer. This solves the technical problem that existing surge pulsers only use a single shielding layer, which leads to the majority of electromagnetic energy generating eddy current loss and hysteresis loss in the shielding layer, generating a large amount of heat and requiring external heat dissipation equipment to assist in heat dissipation.

The utility model discloses a kind of anti-deformation diamond saw blades, including base, the rim of base is provided with multiple circumferential array distribution plane, the surface of each plane is provided with two symmetrically distributed insertion cavities, the surface of base is provided with the through hole of insertion cavity, the insertion cavity is inserted with the insertion plate in each, the both sides of insertion plate are located in the through hole and are provided with lug, the surface of lug is provided with wear strip.The utility model is provided with wear strip, so that the both sides wear strip of base are projected from the surface of base, reduce the friction between base and the object to be cut, avoid the phenomenon of "clamping saw", prevent the deformation caused by the wear of base side at the same time, high-quality cut surface can be obtained by using the good grinding property of superfine abrasive.

The utility model discloses a kind of multi-grade adjustment rotary switches, including base, shell cover, rotating handle and contact assembly, rotating handle rotationally arranged between base and shell cover, and drive rod extending along its radial direction is provided;Contact assembly includes the multiple elastic structure's moving contact bridge of the shaft center of rotating handle as center annularly arranged in installation cavity, and multiple static contact pieces are arranged in base and respectively opposite multiple moving contact bridges, multiple moving contact bridges are connected and respectively located on the movement path of drive rod, drive rod respectively drives multiple moving contact bridges and multiple static contact pieces contact in rotating handle rotating process, by the mechanism of the wheel contact formed by drive rod and multiple moving contact bridges, operation pressure is significantly dispersed, avoid single moving contact bridge sustained stress, greatly reduce the mechanical load and fatigue degree of moving contact bridge, reduce the probability of heating, reduce wear and risk of fusion welding, extend mechanical service life.

A gas processing system includes a vessel (102) defining a cavity (106) for processing a gas. The vessel includes a process gas inlet (108) for receiving a process gas at an input pressure and a process gas outlet (110) for discharging the process gas at an output pressure. The gas processing system also includes a shaft (122) coupled to the vessel and a stepwise sealing system (114) including a plurality of seals (136) spaced along the shaft. The shaft is configured to transfer mechanical energy to or from the gas in the vessel. Each adjacent pair of seals defines a corresponding pressure space therebetween. One of the pressure spaces is an equalization pressure space (144a) in hydraulic communication with the process gas inlet via a flow line (116) such that, in operation, a pressure in the equalization pressure space is maintained at an equalization pressure relative to a pressure in the process gas inlet.

The application provides a battery fast charging protection method and device based on reverse current detection and electronic equipment, and belongs to the technical field of battery management. The method comprises the following steps: acquiring current direction information of a charging current flowing through an internal battery of the electronic equipment; determining that the current direction information represents a reverse current state from the battery to a charger; in response to the determination of the reverse current state, generating and outputting a discharge control signal based on parameter information of the reverse current state; controlling a power switch circuit connected to the battery to apply a controllable discharge current pulse to the battery according to the discharge control signal; and through real-time monitoring and response to the harmful reverse current generated by the battery, precise and adaptive protection intervention is realized, so that the average current of the fast charging process is optimized, and the charging efficiency is effectively improved under the premise of guaranteeing the safety and service life of the battery.

This invention relates to a roller chain (10) for a circulating rolling module (20) for offshore applications. The roller chain (10) includes a plurality of rollers (11), each mounted on a shaft (12). The rollers (11) are free to rotate relative to their associated shafts (12). The cylindrical inner surface (112) of the rollers (11) and the outer surface (121) of the shafts (12) define sealed cavities (15) filled with lubricating fluid. Each shaft (12) is rotatably locked together with at least one associated link (13) by a rotational locking device (16).

This invention discloses a low-height dual-coil snap-fit ​​electromagnetic relay, comprising a base, a housing, two magnetic circuit sections, and two moving spring armature components. The magnetic circuit sections are mounted on the base, with the axis of the coils in the magnetic circuit sections arranged vertically. The two moving spring armature components respectively cooperate with the two magnetic circuit sections. The housing is cover-shaped, with its opening on the side. The invention is characterized in that the base, which assembles the magnetic circuit sections and the moving spring armature components, is tilted and housed within the housing. This invention ensures that the installation direction of the relay is perpendicular to the plane containing the axes of the two sets of coil assemblies, thereby reducing the height dimension of the relay in the installation direction by using two sets of coils.

This invention belongs to the field of end-face sealing technology, specifically relating to a combined corrugated groove end-face sealing device consisting of a rotating ring and a stationary ring. The invention includes a rotating ring and a stationary ring that cooperate with each other through sealing end faces. The sealing end faces are respectively provided with corrugated grooves and notched grooves. The ring containing the corrugated groove is a wide ring, and the ring containing the notched groove is a narrow ring. The sealing end face width of the wide ring is greater than that of the narrow ring, and the notched groove is located on the outer ring surface of the narrow ring. The rotation path of the corrugated groove intersects with the cavity of the notched groove. This invention achieves an effective balance between sealing leakage and end-face lubrication, thereby providing continuous and effective lubrication and cooling for the friction pair of the end-face seal.

The present disclosure relates to a battery power supply regulating circuit, a regulating method, a charging line and a terminal device. The charging circuit is used for charging a double-core battery, and the circuit comprises a Buck step-down circuit module, a first charge pump circuit module, a second charge pump circuit module, a battery charging and discharging control module and a system power supply module; the input end of the Buck step-down circuit module and the input end of the first charge pump circuit module are respectively connected with an AC / DC adapter; the first output end of the Buck step-down circuit module is connected with the second charge pump circuit module; the second output end of the Buck step-down circuit module is connected with the system power supply module; the battery charging and discharging control module is connected with the controlled end of the Buck step-down circuit module, the controlled end of the first charge pump circuit module, the controlled end of the second charge pump circuit module and the double-core battery; the first charge pump circuit module and the second charge pump circuit module are respectively connected with the double-core battery; and the second charge pump circuit module is further connected with the system power supply module.

The utility model relates to a static contact structure of a medium-voltage ring main unit circuit breaker, which comprises a base and a static contact plate which are integrally formed, the base is of a cuboid structure, a screw mounting hole used for connecting a static end of the circuit breaker is arranged on the base, the base is arranged at the lower part of the static contact plate, and a groove for accommodating the static contact plate is arranged on the side wall of the base. A groove is formed in the base, the static contact plate is arranged in the groove, the end faces of the two sides of the static contact plate are two vertically-arranged contact planes, the contact planes are trapezoidal, the side, close to the base, of each contact plane is provided with a contact edge arc-shaped chamfer, and the contact edge arc-shaped chamfers of the two contact planes are matched to form a transition guide part facilitating contact between the moving contact and the contact planes; the static contact structure ensures enough contact area with the moving contact, reduces contact resistance, reduces heating, improves conductivity and breaking capacity, ensures proper contact pressure between the static contact structure and the moving contact, enables the static contact structure and the moving contact to be tightly contacted, prevents poor contact, and is easy to disassemble and replace.

This invention belongs to the field of fluid transmission control and relates to an integrated cartridge-type multi-way valve specifically for pipe jacking machines. It includes a safety control valve assembly, a machine head rotation control valve assembly, a main jacking advance / retreat control valve assembly, a pressurization and flow merging direction control valve assembly, a machine head and main jacking pressurization and flow merging valve assembly, and a correction / relay control valve assembly. Each assembly has approximately the same dimensions and uses cartridge valves to control direction and flow. The cartridge valves employ valve core feedback closed-loop control to improve control accuracy. The pilot oil route for the cartridge valves is provided by a small-diameter three-position four-way directional valve. All assemblies are connected together by sealing rings and long bolts. This invention, by highly integrating the functions of various execution parts of the pipe jacking machine and using cartridge valves as the main valve core control, solves the problems of pipeline accumulation and low control accuracy in the pump station of pipe jacking machines. This significantly improves the construction efficiency of the pipe jacking machine, reduces power loss, makes operation more convenient, and is more suitable for construction in various geological formations.

The application relates to a flexible charging module control method and device supporting V2G, comprising the following steps: determining whether there is a hard switching risk according to the comparison result of the load power value and the preset threshold value; in the case that there is a hard switching risk, adjusting the resonant frequency of the CLLL topology to the first frequency interval based on a frequency-duty cycle hybrid modulation strategy, making the resonant current phase and the switch tube voltage phase form a preset phase difference, and adjusting the drive signal duty cycle of the primary side switch tube and the secondary side switch tube, so that the conduction time difference of the primary side switch tube and the secondary side switch tube increases with the decrease of the load power value; based on an adaptive frequency spectrum expansion algorithm, the resonant frequency is periodically dithered in the first frequency interval with a preset step, and the dithering period and the switching period of the switch tube are in a nonlinear mapping relationship; the bidirectional power conversion efficiency is improved, the light load hard switching and electromagnetic interference problems are solved, and the reliable operation of the charging module in the V2G scene is ensured.

The application discloses a kind of fresh wet noodles preservation plasma activation water cavitation system and method, the system includes high-frequency low-voltage driving power supply, embedded central processing unit, fluid pipeline, multistage cavitation reaction device, microchannel ozone generation device, mounting platform and magnetic control type gas flow proportional regulating valve.System utilizes microchannel discharge technology to generate ozone efficiently, and realizes multistage mixing and cavitation reaction of ozone and clean water by multistage alternating steady flow cavity and throat structure, to generate hydroxyl radical.Electrochemical detection unit integrated in the tail of system can monitor hydroxyl radical concentration on-line in real time, and embedded central processing unit dynamically regulates the opening of magnetic control valve according to monitoring data, to accurately adjust ozone dosage, to form closed-loop intelligent control.The application realizes the integration of hydroxyl radical generation, on-line sensing and process control, and the generated plasma activation water significantly improves the fresh wet noodles preservation capacity.

This invention relates to the field of excavator technology and its control method, specifically a pump-motor-based excavator stick energy recovery system. The system includes a hydraulic cylinder, a reversible hydraulic pump motor, an integrated electric generator, a three-position four-way solenoid valve with a first inlet, a first outlet, a second outlet, and a first return port, a first hydraulic pump connected to a hydraulic tank, a first check valve connecting the hydraulic pump outlet and the first inlet, an electric motor, a third check valve connecting the first return port and a second pipeline interface of the reversible hydraulic pump motor, and a first two-position two-way solenoid valve connecting the pipeline between the third check valve and the second pipeline interface to the first inlet. Specifically, the first pipeline interface of the reversible hydraulic pump motor is connected to the hydraulic tank via a fourth check valve and the third two-position two-way solenoid valve, and is connected to the first return port via a pipeline connected to the second two-position two-way solenoid valve. The first outlet pipeline is connected to the rodless chamber of the hydraulic cylinder, and the second outlet is connected to the rod chamber via a pipeline.

The utility model belongs to abrasive disc technical field especially relates to a kind of precision single-crystal corundum resin bond abrasive disc, including annular matrix, transition ring, positioning ring and mounting ring, transition ring, positioning ring and mounting ring are sequentially arranged from outside to inside at the center position of annular matrix, and the annular matrix is adhesively fixed with transition ring, the transition ring is adhesively fixed with positioning ring, the positioning ring is adhesively fixed with mounting ring;By setting chip removal groove and grinding groove, the chip generated during the grinding process of annular matrix to object can be effectively excluded, avoid the adverse effect of chip on grinding process, by setting multiple heat dissipation holes, the large amount of heat generated during the grinding process of annular matrix to object can be quickly dissipated, reduce the heating degree of the device during use, improve the service life of the device.

The application provides an X-ray bulb rotating anode control device, which comprises a control console, a control unit, a drive circuit unit, a single-phase full-bridge inverter unit, an alternating current rectifier unit, an overcurrent detection unit and a motor; the output end of the control console is connected with the input end of the control unit, the output end of the control unit is connected with the first input end of the drive circuit unit; the output end of the drive circuit unit is connected with the first input end of the single-phase full-bridge inverter unit, the first output end of the single-phase full-bridge inverter unit is connected with the motor; the output end of the alternating current rectifier unit is connected with the second input end of the single-phase full-bridge inverter unit, the second output end of the single-phase full-bridge inverter unit is connected with the overcurrent detection unit; and the output end of the overcurrent detection unit is connected with the second input end of the drive circuit unit. Through the cooperative work of the control console, the control unit and the drive circuit, the device realizes real-time and accurate regulation and control of the rotating anode rotating speed, and meets the dynamic rotating speed switching under different inspection requirements.

This application provides a massager. The housing includes a handle and a first massage head movably connected to the handle. The first massage head includes a body and a first massage surface disposed on the body. A first protrusion is disposed on the first massage surface, separating the first massage surface into a first surface and a second surface. The first protrusion also has a third surface. A first heating film covers the third surface. The direction from the third surface to the first massage surface is defined as a first direction. The projected area of ​​the first massage surface along the first direction is denoted as 'a'. The projected areas of the first surface, the second surface, and the third surface along the first direction are m1, m2, and m3, respectively, where 0.2a ≤ m1 ≤ 0.3a, 0.2a ≤ m2 ≤ 0.3a, and 0.4a ≤ m3 ≤ 0.6a. By placing the protrusion on the massage surface and covering the third surface only with the heating film, heat is concentrated in the area with the most concentrated massage effect. Furthermore, by setting the area of ​​the third surface between 0.4a and 0.6a, the massager significantly improves battery life while ensuring a good massage effect.

The present application relates to a kind of double-channel low-voltage ideal diode, including two independent and same structure channel, the power PMOS tube of each channel is integrated, gate drive circuit, current sampling circuit, programmable current limiting circuit, temperature detection circuit and undervoltage lockout circuit.The present application is adjusted by gate drive circuit intelligent degree of power tube conduction, maintain about 15mV ultra-low conduction voltage drop when light load, more than 90% lower than traditional schottky diode power consumption;Through CLIMx external resistance, current limiting value can be flexibly set;With two-stage temperature protection (130 ℃ early warning / 160 ℃ shutdown) and fast reverse current blocking function, seamless switching of main backup power supply can be realized.The present application effectively solves the problems of high power consumption, serious heating, lack of programmable protection and reverse current risk of existing diode scheme, and is especially suitable for unmanned aerial vehicle, aerospace and industrial control in the key load power supply with strict requirements on volume, power consumption and reliability.

This application provides a connector female socket, a connector male head, and a connector. The connector female socket includes a housing and a spring contact. The spring contact adopts an inverted U-shaped main body design, with a flexible contact structure housed within a symmetrically arranged clearance groove in the middle: including a first flexible contact extending obliquely from the top and second flexible contact parts symmetrically distributed on both sides. After the male head is inserted, three stable contact points are formed in a triangular distribution: firstly, the three-point contact design makes the current distribution more uniform, which can reduce contact resistance; secondly, the progressive contact method ensures both low insertion and extraction force and maintains sufficient contact pressure; thirdly, the triangular contact layout significantly improves vibration resistance and effectively suppresses fretting wear; finally, the interference fit fixing method of the spring contact results in a long product insertion and extraction life. This design is suitable for high-current applications in new energy vehicles, ensuring high reliability while also taking into account ease of assembly.