84results about How to "Avoid life impact" patented technology

The invention discloses a frost-less air-source heat pump hot water unit and a proportional-integral-differential control method for the same. The proportional-integral-differential control method includes performing computation according to received air temperature and humidity parameters, received air pressure parameters and received surface temperature parameters of an evaporator when outdoor temperature parameters which are transmitted by a temperature and humidity sensor and are received by a computation controller are lower than 0 DEG C, controlling the opening of an electronic expansion valve according to a computation result and regulating the surface temperature of the evaporator by means of increasing or reducing the opening of the electronic expansion valve so that the surface temperature of the evaporator is constantly higher than a frost formation point; and enabling a silicon-controlled power regulator to judge a suction superheat degree of a compressor according to received suction temperature and suction pressure of the compressor, increasing or reducing the power of an electric heater and maintaining that the suction superheat degree of the compressor only varies within a set value range. The frost-less air-source heat pump hot water unit and the proportional-integral-differential control method have the advantage that adjustment for the opening of the electronic expansion valve is matched with adjustment for the power of the electronic heater, so that the purpose of maintaining safe and efficient running of a system is achieved.

The invention discloses a rapid forming method of a lithium ion power battery, which is characterized by comprising the following steps of: 1. precharging; 2. settling and aging; and 3. charging by adopting an intermittent depolarized single-stage impulse charging mode until charge is finished. Because the forming process of the invention adopts the intermittent depolarized single-stage impulse charging mode, the impedance of an SEI (Solid Electrolyte Interface) membrane is lowered, thereby reducing the internal resistance of the battery and improving the rate discharge performance of the lithium ion power battery. Because the forming process of the invention adopts an impulse current with a lower frequency, the battery can be naturally depolarized within the impulse-off time, thereby lowering the polarizing effect, stabilizing the charging voltage, improving the charging efficiency, simultaneously avoiding the high requirement brought by a high frequency impulse current charging mode for equipment, improving the utilization efficiency of electric energy and greatly lowering the production cost. The step of precharge is adopted to facilitate the formation of the stable SEI membrane, thereby improving the performance of the battery.

The invention provides a method for installing a door/window cover, a matched tool, a fitting and the door/window cover. The invention is characterized in that the method adopts an expansion bolt with a nail or a screw nail, a dowel and a connecting piece component, and comprises the steps of arranging a support bar and a glue groove on the door/window cover and a wall, tightly blocking by a wedge, injecting foaming glue and the like; and the invention provides the door/window frame cover with a support bracket, a perpendicularity disc, a chamfer clamp, an expansion bolt with a nail or a screw nail, a dowel, a support bar, a glue groove, a wedge, a connecting piece, a hasp with a connecting piece, a glue groove and a support bar. The invention has the advantages of being firm in installation, improving the work efficiency, saving the glue, improving moisture-proof, sound-proof and heat-preserving effects, and prolonging the service life of the door/window cover.

The invention provides an audio playing method and a system, a mobile terminal and a WIFI earphone. The audio playing method comprises the following steps, establishing the WiFi network connection between mobile terminal and the WiFi earphone in the same WiFi network, acquiring the current position parameter of the WiFi earphone, subjecting the audio file of the mobile terminal and the current position parameter of the WiFi earphone to fusion algorithm, and playing the audio file through the WiFi earphone after the fusion algorithm. When the head position of a user changes, the audio file and the current position parameter of the WiFi earphone are subjected to algorithm fusion. After that, the audio file is played through the WIFI earphone. Therefore, the sound source location of a virtual scene simulated by the audio file in the brain of the user is fixed, so that the auditory way of the user in a real state is realized. As a result, the listening experience of the user is more comfortable, and the playing quality of the audio file is improved.

The invention discloses a control method of a multi-split heat pump system. The control method comprises the following steps that the priority of each heat pump unit of the heat pump system is set, and the priority sequence of all the heat pump units is determined according to the priority; the heat pump unit with the highest priority is selected as an on-line coordination control main machine, and the heat pump units with the priority lower than the on-line coordination control main machine are used as on-line coordination control slave machines; wherein each on-line coordination control slave machine is controlled by the on-line coordination control main machine; when the heat pump system operates, the on-line coordination control main machine controls all the heat pump units to be started or closed in sequence according to the priority sequence, and a heating mode is operated according to the water level and the water temperature of a current water tank; and the heating mode comprises a direct heating mode or a circulating heating mode. The control method of the multi-split heat pump system can effectively realize on-line coordinated control of a plurality of heat pump units, and is convenient to control and efficient and energy-saving. The invention further provides a control system of the multi-split heat pump system.

The invention provides a noise monitoring, identifying and positioning method and system, and a computer readable storage medium. The method comprises the following steps: receiving noise signals detected by noise monitoring equipment arranged at different positions, transmission directions of the noise signals, and starting time information of the detected noise signals; for the two groups of noise signals detected in the same time period, calculating the sound similarity between the two groups of noise signals; when judging that the sound similarity reaches a set threshold, determining thatthe two belong to the same noise source; determining a target spatial position corresponding to a noise source by combining the spatial positions of the two noise monitoring devices which detect the two groups of noise signals and the transmission directions of the two groups of noise signals and utilizing a triangulation positioning principle. The noise source can be quickly recognized and positioned, the noise influence can be eliminated in time, and the influence on work, study and life of people is avoided.

The invention provides a condensation photovoltaic module with a hollow glass packaging structure. The photovoltaic module with the hollow glass packaging structure comprises a condensing lens panel, a condensing lens which is placed on the condensing lens panel, a circuit base plate which is sticked with a solar battery, a terminal box which is placed at the back of the photovoltaic module. The condensing lens panel is packed with the circuit base plate through a hollow aluminum spacer and a hot melting butyl rubber which is placed on the hollow aluminum spacer. The internal hollow aluminum spacer is filled with molecular sieve. Frame around the photovoltaic module is filled with silicone adhesive to seal and splice edges. The condensation photovoltaic module with the hollow glass packaging structure can effectively absorb hydrone in an interlayer in air, can prevent circuit element from being corroded, and can protect the photovoltaic module well. In addition, the condensation photovoltaic module can prevent service life of the photovoltaic module from being influenced by temperature difference causing pressure difference between the inside of the photovoltaic module and the outside of the photovoltaic module, reduce shape change of the condensing lens panel, and ensure stability of a condensation photovoltaic module system and photoelectric conversion efficiency.

The invention belongs to technologies for aviation support equipment, and relates to an improved pitching assembly of a radar scanner for detecting foreign matters on runways. The improved pitching assembly comprises a right backup plate (1), a backup plate cover (2), a servo module (3), a right angular contact ball bearing (4), a pitching frame end cover, a left arm, a left angular contact ball bearing (7), a left backup plate, a backup plate cover (9), a pitching frame and a right arm. A pitching motor is a permanent-magnet direct-current brushless torque motor (20) and is of a hollow shaft sleeve type, a stator of the pitching motor is mounted on a servo frame (18), a rotor of the pitching motor is mounted on the left backup plate (21), the servo module (3) is mounted inside the pitching frame (18), a pitching angle is fed via a rotary transformer (26) sleeved on a revolving shaft (23), a revolving stator is fixed into the pitching frame by the aid of a hoop, and axial clearance and pre-tightening force can be regulated by the aid of a sleeve (25) and a jackscrew (24). The improved pitching assembly has the advantages of high transmission and scanning precision, capability of meeting the requirement on low scanning speed, light weight, small size, high system rigidity, protection grade and reliability and long service life.

The invention relates to a nitrogen spring structure which comprises a cylinder body, a plunger rod and a middle sleeve. The cylinder body is provided with a cylinder body hole. The middle sleeve is connected with the upper portion of the inner wall of the cylinder hole in a sealed manner. The plunger rod is connected with an inner hole of the middle sleeve in a sealed and sliding manner. The cylinder hole of the cylinder body is filled with high-pressure nitrogen. The inner end face of the plunger rod is provided with step type bosses of at least two steps extending outwards. The inner wall of the middle sleeve is provided with a backstop boss extending inwards and a limiting boss. A Y-shaped sealing ring is arranged in a sealing ring containing groove. A ring-shaped pressure relief thin-wall boss is arranged on the periphery of the middle sleeve. The outer end face of the plunger rod is provided with at least one stress face forming an inclination angle relative to the outer end face. An installing hole is formed in the bottom of the cylinder hole of the cylinder body. A plug installing base is fixed to the installing hole. The plug installing base is provided with a plug blind hole facing the cylinder hole. The nitrogen spring structure can prevent the cylinder body from cracking, prevent the plunger rod from breaking and flying out and prevent unbalance loading, and has a function of plunger rod overtravel protection.

The invention relates to a vacuum tube switching core used for an M type on-load tap-changer, which can be exchanged with a switching core of a traditional M type on-load tap-changer without changing a selector switch oil chamber. The vacuum tube switching core comprises a vacuum tube transition changing-over assembly and a main flow passage part, wherein an upper group of three-phase cavel contacts and a lower group of three-phase cavel contacts in the main flow passage part are combined together, placed at the lower part of the vacuum tube transition changing-over assembly and connected with an original main contact through soft connection to ensure that the position of the main contact is not changed. In the invention, the appearance structure and the installation size of switching core of the original M type on-load tap-changer are retained, thereby the switching core of the original M type on-load tap-changer can be conveniently replaced without changing the M type on-load tap-changer and other parts, for example, the structure of the selector switch oil chamber and the position of a connection pile head are not changed. The invention is suitable for the replacement and maintenance of the M type on-load tap-changer used on site and the manufacture of a new M type on-load tap-changer.

The invention provides a test system and method for a turbine blade integrated thin film temperature sensor, which solves the problem that the existing turbine blade integrated thin film temperature sensor cannot adopt an industrial thermocouple temperature measurement calibration mode. The system comprises a heating box, an instantaneous heating unit, an imaging unit, a standard thermocouple, a check meter and a control unit, wherein the instantaneous heating unit comprises a laser, a condensation unit and a rotary table; the condensation unit is located outside the observation opening in the side wall of the heating box and on an emergent light path of the laser; the condensation unit is arranged on the rotary table; the imaging unit is arranged outside the observation opening of the heating box; the number of the standard thermocouples is equal to that of the thin film temperature sensors on the turbine blade to be measured, and the positions are in one-to-one correspondence; the thin film temperature sensor and the standard thermocouple are respectively connected with the check meter; the control unit controls the emergent energy of the laser and is connected with the rotary table; and the control unit compares the temperatures obtained by the thin film temperature sensor and the standard thermocouple, and judges whether the performance of the thin film temperature sensor is qualified or not.

The invention provides a failure reminding method, a failure reminding system, an air conditioner, computer equipment and a computer readable storage medium. The failure reminding method includes thesteps of judging whether the air conditioner has a failure; judging whether the air conditioner is in a startup mode or not when the air conditioner has a failure; and according to judging results, controlling a display device of the air conditioner to carry out failure reminding according to corresponding display modes. After it is detected that the air conditioner has a failure, failure reminding is carried out by the display device according to the corresponding display modes and the on-off state of the air conditioner, so that the problems that in relevant technologies, failure reminding cannot be carried out after the air conditioner is turned off, and consequently a user cannot find failures in time and cannot repair the air conditioner in time are solved; and failure reminding of different modes can be provided according to the on-off state of the air conditioner, so that the problem that in relevant technologies, a failure indicator lamp flickers all the time for reminding whenthe air conditioner has a failure and consequently lives of users are affected is solved, and the user experience is improved.

The invention discloses a filtration device at a water outlet of a sluice. The filtration device comprises a suspending plate which is fixedly connected to the top of a case through a connecting plate mounted on the bottom of the suspending plate; a diesel engine is fixedly mounted on the top of the case; a drive tooth disc is arranged on the output shaft of the diesel engine in a sleeved manner; the drive tooth disc is in transmission connection to a driven gear in an inner cavity of the case through a chain which is arranged on the drive tooth disc in the sleeved manner; the driven gear is movably connected to the inner wall of the case through a mounting shaft which is welded on the side surface of the driven gear; the side surface, away from the mounting shaft, of the driven gear is welded with one end of a rolling wheel movably mounted on the inner wall of the case; and the surface of the rolling wheel is fixedly connected to the top end of a filter screen. The filtration device at the water outlet of the sluice disclosed by the invention has the characteristics of being high in extension and retraction speed and clearing impurities in water conveniently, and further has a self-cleaning function, so that the problem that garbage and water plants in existing river drift along the river and are difficult to clear is solved.

The invention discloses a method for testing the output switching capability of power supply units (PSU) of a smart rack. Scripts are compiled in the expect language, a rack manage controller adjusts the voltage threshold from DC to AC, the threshold is lower than the present DC voltage, and the condition for automatically switching to AC output is met. After switching, a normal threshold is recovered, power output of the PSU is switched back to DC, so that repeated test in the next step can be carried out. The method is rapid, convenient, easy to operate and capable of avoiding manual mistakes, and can be used in the RACK to automatically test the output switching capability of power supply units for a long time, the testing accuracy and stability can be effectively ensured, test can be carried out under the unmanned on duty state, and labor and time are saved.

The invention relates to the field of tire vulcanizing machines and rubber vulcanizing devices, in particular to tire vulcanizing equipment which comprises a mold assembly, a ring seat assembly arranged in the mold assembly, a cylinder barrel assembly for supporting the ring seat assembly, a sealing cover for sealing gas in the mold assembly and a driving part. A rotating shaft for driving the gas circulating fan to rotate is arranged in the cylinder barrel assembly, the driving part drives the rotating shaft to rotate, and the sealing cover separates the driving part, so that high-temperature and high-pressure gas in the mold assembly cannot lose the driving part, and the service life of the driving part is prolonged.

The invention discloses a multi-drum constant-speed constant-tension hydraulic windlass which comprises a rope storage drum, a large friction drum, a small friction drum and a power source for driving the large friction drum. The rope storage drum and the small friction drum are arranged coaxially, steel wire ropes on the large friction drum and the small friction drum are both wound in a single layer to realize constant-tension output, and a transmission mechanism used for keeping the large friction drum and the small friction drum to rotate at the same linear speed is arranged between the same. The multi-drum constant-speed constant-tension hydraulic windlass is simple and compact in structure, small in size and capable of realizing constant-tension output of the steel wire ropes and guaranteeing stationary motion of loads in a steel wire rope unwinding process.

The invention discloses a thermodynamic coupling test device for simulating a high-temperature service environment of an aero-engine, and relates to the technical field of thermal barrier coating service environment experiment devices, the thermodynamic coupling test device comprises an experiment table, the experiment table is provided with a heating assembly, a cooling assembly and a force application assembly, and the force application assembly is used for fixing two ends of a workpiece and applying axial force to the workpiece; the workpiece comprises a heating surface and a cooling surface, the heating assembly is used for heating the heating surface of the workpiece, and the cooling assembly is used for cooling the cooling surface; the workpiece is fixed to the force application assembly, then the heating end of the heating assembly is aligned with the heating surface of the workpiece for heating, and the cooling end opening of the cooling assembly is aligned with the cooling surface of the workpiece for cooling, so that a temperature gradient is formed between the heating surface and the cooling surface of the workpiece, and meanwhile, the force application assembly is used for applying alternating stress to the workpiece; the service environment of an actual aero-engine can be fully simulated, and the accurate failure process of the thermal barrier coating in the high temperature gradient and alternating stress state is obtained.

The invention discloses a grid fault recovery control method for an electric generator. The method includes the steps that in the grid fault recovery stage, a rotor current instruction vector is switched to the rotor current instruction vector in the grid fault recovery stage so as to restrain electromagnetic torque pulsation, and meanwhile DC magnetic flux attenuation is accelerated; after being switched out of the grid fault recovery stage, the rotor current instruction vector is switched to the rotor current instruction vector in the grid normal operating stage and the rotor current instruction vector in the reactive power supporting stage; when the rotor current instruction vector in the grid fault recovery stage is calculated, the rotor current instruction vector and a stator current vector are made to be collinear first, then the norm of the rotor current instruction vector in the grid fault recovery stage is obtained, next the norm is substituted into a formula for calculation, and then the rotor current instruction vector in the grid fault recovery stage is obtained. Through the method, the electromagnetic torque pulsation is restrained, switching of flexible faults of a double-fed motor is achieved, and the reliability of a mechanical system is enhanced; because the attenuation of transient DC magnetic flux is accelerated, recovery of power output can be accelerated, the risk that higher electrodynamic potential is inducted on the rotor side under the condition of repeated faults can be avoided as far as possible, rotor currents are limited, and safe operation of a rotor current transformer is guaranteed.

The invention relates to a multi-functional table lamp. The multi-functional table lamp comprises a supporting pillar, and a lampholder is hinged to the lower end of the supporting pillar; an air cavity is formed in the supporting pillar; the lower end of the air cavity is sealed; the upper end of the air cavity is open; a piston is arranged in the air cavity in a sliding manner; a push rod is connected to the upper end face of the piston; an adapter rod is hinged to the upper end of the push rod; the adapter rod is rotatably mounted at the upper end of the supporting pillar; a bulb mounting plate is fixedly connected to the end, away from the push rod, of the adapter rod; an annular air sac is mounted on the outer side of the push rod in a sleeving manner; the annular air sac is providedwith air inlet-exhaust hole groups; through holes are formed in the positions, corresponding to the air inlet-exhaust hole groups, of the side wall, facing the folded bulb mounting plate, of the air cavity; the upper end of the annular air sac is fixed to a partition; the partition is fixed in the air cavity; and the lower end of the annular air sac is fixed to the piston. According to the multi-functional table lamp, heat of a bulb and the bulb mounting plate can be well dissipated, the service life of the bulb is prevented from being affected by high temperature, and the service life of thetable lamp is prolonged.

The invention discloses a desulfurization and denitrification device based on an adjusting type active particle exciters. The desulfurization and denitrification device comprises an absorbing tower, wherein the absorbing tower is internally and sequentially separated into an absorption liquid pond area, a fume oxidization and injection area, a spray area and a demisting area from bottom to top; the fume oxidization and injection area is formed by a plurality of the adjusting type active particle exciters which are horizontally arranged in a tangent circle way along the wall of the absorbing tower; each adjusting type active particle exciter comprises an outer tube, an inner tube, a grounding electrode, a high-voltage electrode, an adjuster and the like; and each adjuster is used for adjusting the axial motion of each inner tube. The desulfurization and denitrification device disclosed by the invention is high in contaminant removal efficiency and low in system energy consumption and can be used for efficiently generating the active particles in a low-temperature environment, enhancing the effective utilization rate of the active particles, sufficiently oxidizing the contaminants and simultaneously desulfurizing and denitrifying the low-temperature fume absorbed by the contaminants. According to the desulfurization and denitrification device, when the fume passes through the absorbing tower, NO and SO2 which are contained in the fume can be simultaneously oxidized and absorbed, so that the purposes of simplifying equipment, reducing occupied area and integrating high-efficiency desulfurization and denitrification of the low-temperature fume are achieved.