91results about How to "Improve use safety and reliability" patented technology

The invention discloses a thermal spraying remanufacturing method for a damaged end surface of an aero-engine accessory gearbox housing. The technological process includes the steps as follows: boring partially the damaged part, thermal spraying to repair the damaged part, and boring the remaining coating. The method is characterized in that during the process of thermal spraying to repair the damaged part, the bottom transitional layer adopts Ni-Al alloy material; the Ni-Al alloy consists of 95wt% of Ni and 15wt% of Al; the Ni-Al alloy wire has the spraying parameters as follows: spraying voltage is from 30 to 35V, the spraying current is from 150 to 180A, the spraying distance is 100mm, and the atomizing air pressure is from 0.35 to 0.45Mpa; and the aluminum wire spraying parameters are as follows: the spraying voltage is from 30 to 35V, the spraying current is from 100 to 120A, the spraying distance is from 130 to 150mm, and the atomizing air pressure is from 0.5 to 0.6Mpa. The method is simple to operate, has excellent effect, has the effective function of fault removal as the repaired accessory can meet the technical requirements of the engine use, improves the safety and reliability of the engine use, and reduces the maintenance cost of the engine at the same time.

The invention discloses a four-mechanical-arm climbing type line inspection robot mechanical structure. The distances between two opposite mechanical arms in a four-mechanical-arm group in the direction perpendicular to the extending direction of cables can be adjusted by a width adjusting mechanism, in this way, the distance adjustment between the two cables can be well adapted, and the cables are prevented from bearing too large tension or tensioning force; meanwhile, two mechanical arms in the four-mechanical-arm group are arranged in a swinging manner; therefore, the tightness support adjustment of the two mechanical arms on the cables can be realized through the swinging of the two mechanical arms; the stress of all line rollers is consistent; meanwhile, each line roller is provided with a width detection mechanism for detecting the widths of the two cables and a supporting detection mechanism for detecting the support force of the cables on the line roller. The controller can conduct feedback adjustment on the spatial positions of the four-mechanical-arm group according to the width detection mechanisms and the supporting detection mechanisms, automatic adjustment and controlover the robot are achieved, and the operation stability is guaranteed.

The invention relates to a production method of a continuous casting tundish combined turbulence controller. The combined turbulence controller comprises a housing, a bottom plate, a cartridge core, expansion joints, and an anti-oxidation coating. The housing is made of magnesia castable by casting. The bottom plate is built with magnesia carbon bricks made by mechanical pressing. The cartridge core is built with sector magnesia carbon bricks made by mechanical pressing. One expansion joint forms between the housing and the bottom plate, and the other one forms between the housing and the cartridge core. The outer surface of the cartridge core is coated with the anti-oxidation coating. The parts, such as the housing, the bottom plate and the cartridge core, of the combined turbulence controller are integrally assembled during the casting process of the housing castable; moulding bed design in the production method is simplified, assembly process is optimized, assembly quality is improved, the service life of the combined turbulence controller is prolonged, and continuous casting cost is reduced.

The invention discloses an online solar power station PID recovery system which comprises solar cell arrays, combiner boxes, a DC power distribution cabinet, an inverter, an AC power distribution cabinet, a transformer, a power grid and a PID recovery device. The combiner boxes are connected with the plurality of solar cell arrays; the DC power distribution cabinet is connected with the plurality of the combiner boxes; and the DC power distribution cabinet, the inverter, the AC power distribution cabinet, the transformer and the power grid are sequentially connected. The PID recovery device comprises a high-voltage power supply, a relay and a controller. The DC power distribution cabinet is internally provided with a grounding detection box and a grounding point. The high-voltage power supply is provided with a switch, high-voltage lines and low-voltage lines, wherein the high-voltage lines are connected with the DC power distribution cabinet or the combiner boxes, and the low-voltage lines are connected with frames or supports of the solar cell arrays. The relay is connected with the grounding detection box and the grounding point. The switch and the relay are connected with the controller. The beneficial effects of the online solar power station PID recovery system are that the recovery system ensures normal working of grounding detection, carries out power recovery automatic control, does not influence normal use of a solar power station, and is safe and reliable to use.

The invention discloses a PCB limiting and testing fixture. The PCB limiting and testing fixture comprises a support, and is characterized in that a supporting beam is arranged on the top of a base, a top plate is arranged on the top of the supporting beam, a carrier plate is arranged on the top of the base, an air cylinder is arranged at the bottom of the top plate, an air cylinder rod of the air cylinder is connected with a moving plate, the moving plate is provided with a plurality of rows of communicated blowing holes, blowers are arranged on the top of the moving plate, the bottom of the moving plate is connected with a plurality of probes, the probes face towards a PCB in the carrier plate, upper baffles are arranged at the bottom of the moving plate, and lower baffles are correspondingly arranged on the top of the carrier plate. By means of the PCB limiting and testing fixture, the problems that PCB testing precision is affected because a large quantity of dust and scraps remain on the PCB, a blowing mechanism is poor in blowing effect and the probes can press testing points to damage in the process of pressing are solved; the PCB limiting and testing fixture is simple in structure, good in blowing effect, and capable of improving machining quality and limiting the stoke of the probes.

The invention relates to a beam blank continuous casting tundish turbulence controller and an installation method thereof. The turbulence controller comprises a shell, a bottom plate, a sleeve core and a pressing ring, wherein the shell is of a cavity structure with the upper opening open, the bottom plate is located at the bottom of the cavity of the shell, the bottom end of the sleeve core is located on the bottom plate, the pressing ring is arranged at the upper end of the sleeve core and located in the cavity of the shell, the longitudinal center line of the pressing ring and the sleeve core coincides with the longitudinal center line of the inner cavity of the shell, and an expansion seam is arranged between the bottom of the inner cavity of the shell and the bottom plate as well as between the inner wall of the shell and the sleeve core. According to the turbulence controller, because the pressing ring is arranged on the sleeve core, the problem that upper layer magnesia carbon bricks on the side wall of the sleeve core fall off is solved; when the turbulence controller is installed, a plurality of pressing bricks are arranged on the same circumference in the same plane above the pressing ring so that the overall floatation problem of the turbulence controller can be solved, the quality stability of the turbulence controller is improved, and the unexpected technological effect is achieved.

The invention relates to a jack-free socket and a tooth-free connector matched with the same. The jack-free socket comprises a socket shell and a first conductive metal sheet, an iron core, a wire and an elastic reset mechanism; the first conductive metal sheet is exposed on the surface of the socket shell; the iron core is arranged in the socket shell, and the iron core is welded with the wire; the elastic reset mechanism is fixedly arranged in the socket shell; the first conductive metal sheet and the iron core can be in contact to realize electrical connection under the elastic compression effect of the elastic reset mechanism; the tooth-free connector comprises a connector shell and a second conductive metal sheet, a permanent magnet and a wire; the second conductive metal sheet is exposed on the surface of the connector shell; the second conductive metal sheet is welded with the wire; the permanent magnet is fixedly arranged in the connector shell, and the permanent magnet is positioned on one side of the second conductive metal sheet; and the shapes and the surface areas of the first conductive metal sheet and the second conductive metal sheet are consistent. The jack-free socket and the tooth-free connector provided by the invention are attractive in appearance, convenient to use and safe and reliable.

The invention discloses a multi-plug automatic winding displacement digital display power disc which comprises a rack body. The rack body is provided with an automatic winding displacement device, multifunctional pluggable type plugs, a digital display voltmeter, overheat protectors and a leakage protector. The automatic winding displacement device comprises a fixing shaft, a power disc body, two chain wheels, a chain, a reciprocating lead screw and a nut. The overheat protectors are all arranged in the power disc body. The multifunctional pluggable type plugs, the digital display voltmeter and the leakage protector are all arranged on the power disc body. The power disc body is arranged on the fixing shaft in a sleeving mode. The fixing shaft is sleeved with the first chain wheel, the second chain wheel is arranged at the end of the reciprocating lead screw, and the two chain wheels are in transmission through the chain. The reciprocating lead screw is sleeved with the nut, a cable guide mechanism is arranged below the nut, and the cable penetrates through the cable guide mechanism and then is wound on the power disc body. The multi-plug automatic winding displacement digital display power disc has the advantages of being capable of improving the take-up and pay-off efficiency of the power disc body, safe to use, high in reliability, capable of lowering the low voltage electric shock risks of workers and the like.

The invention relates to a beam blank continuous casting tundish turbulence controller and an installation method thereof. The turbulence controller comprises a shell, a bottom plate, a sleeve core and a pressing ring, wherein the shell is of a cavity structure with the upper opening open, the bottom plate is located at the bottom of the cavity of the shell, the bottom end of the sleeve core is located on the bottom plate, the pressing ring is arranged at the upper end of the sleeve core and located in the cavity of the shell, the longitudinal center line of the pressing ring and the sleeve core coincides with the longitudinal center line of the inner cavity of the shell, and an expansion seam is arranged between the bottom of the inner cavity of the shell and the bottom plate as well as between the inner wall of the shell and the sleeve core. According to the turbulence controller, because the pressing ring is arranged on the sleeve core, the problem that upper layer magnesia carbon bricks on the side wall of the sleeve core fall off is solved; when the turbulence controller is installed, a plurality of pressing bricks are arranged on the same circumference in the same plane above the pressing ring so that the overall floatation problem of the turbulence controller can be solved, the quality stability of the turbulence controller is improved, and the unexpected technological effect is achieved.

The invention relates to an embedded non-volatile memory provided with a P+ single polycrystalline architecture of a selector transistor, free of light doped regions and compatible with the CMOS (complementary metal oxide semiconductor) process and a preparation method of the embedded non-volatile memory. The embedded non-volatile memory comprises a semiconductor substrate and a memory cell, the memory cell comprises a PMOS (P-channel metal oxide semiconductor) transistor without the light doped regions, a control capacitor and the PMOS selector transistor, a gate dielectric layer is deposited on the surface of the semiconductor substrate, a floating gate electrode is arranged on the gate dielectric layer and covers and penetrates through the PMOS transistor without the light doped regions and the corresponding gate dielectric layer above the control capacitor, side protecting layers are deposited on two sides of the floating gate electrode, the PMOS transistor without the light doped regions comprises a first N-type region, a P-type source electrode region and a P-type drain electrode region, and the control capacitor comprises a second P-type region, a first P-type doped region and a second P-type doped region. The embedded non-volatile memory is compact in structure and compatible with the CMOS process, chip cost is reduced, and storage safety and reliability are improved.

The invention discloses an air purifier and an air purification method. The air purifier comprises an air inlet chamber and a mixing purification chamber which are arranged adjacently, wherein the airinlet chamber is provided with an air inlet chamber inlet and an air inlet chamber outlet; the air inlet chamber outlet communicates with the mixing purification chamber, and the mixing purificationchamber comprises an atomizer, a plurality of separation plates which are arranged opposite to the air inlet chamber outlet and a purified air outlet which is formed in the upper part of the side wallof the mixing purification chamber; and the atomizer is arranged between the air inlet chamber outlet and the separation plates and is positioned at the upstream positions of the separation plates. According to the air purifier and the air purification method, the atomizer is arranged in the mixing purification chamber, and the atomizer atomizes water and then mixes the water with the air flowingout of the air inlet chamber outlet, so that dust particles in the air are easier to be captured by the atomized water; and in addition, since the separation plates are arranged downstream of the atomizer along the flow direction of the airflow, the air mixed with water is separated and purified through the separation plates again to improve the purification efficiency of the air purifier.