247results about How to "High voltage" patented technology

The invention discloses a gyrotron traveling wave tube low-speed scattered magnetic control injection electron gun and a design method, and belongs to the field of vacuum electronic devices. The electron gun comprises a cathode and an anode. The cathode comprises a cathode bottom table, a rear forming pole, an emission band and a front forming pole, the radius of the cathode bottom table is larger than that of the rear forming pole, the generatrix of the emission band is an arc curve, and the overall surface of the front forming pole is an arc surface; besides, in the design of the cathode, through two times of modeling and respective simulation optimization of partial parameters, the parameters in the one-time simulation optimization process are reduced, the optimization target is clearer, the design difficulty is effectively reduced, and the design time is shortened. The problem that the electric field of the gun area of the electron gun is too high due to the fact that the size of the cathode is too small is effectively solved, meanwhile, the adverse effect of the abrupt change structure of the cathode on the surface electric field of an emission band is avoided, and speed scattering of the electron gun is effectively reduced.

The invention discloses a high-voltage switching control system and a high-voltage switching control method for a double-battery-pack vehicle type, which are used for controlling the switching between a main power battery pack and a standby power battery pack equipped on an electric vehicle, and the main power battery pack and the standby power battery pack are connected in parallel and then are connected to a load main loop to supply power to a load. A main IGBT module is arranged in series in a high-voltage loop where the main power battery pack is located, and a standby IGBT module is arranged in series in a high-voltage loop where the standby power battery pack is located; the IGBT driving module and the control module are correspondingly matched with the main IGBT module and the standby IGBT module respectively; and the control module determines a current PWM duty ratio according to a current voltage value and a current current value of a load main loop and / or a power switching instruction sent by a driver, and controls the on-off of the main IGBT module and the standby IGBT module according to the current PWM duty ratio, so that the main power battery pack and the standby power battery pack are switched to supply power to the load.

The utility model discloses a generator and a cleaning device for a rotor shaft of the generator. The cleaning device comprises a permanent magnet, a cleaning brush, an electric signal acquisition device, a control device and an electromagnet, the permanent magnet is fixedly connected with the cleaning brush; the cleaning brush is arranged on the outer side of the generator rotor shaft; the electric signal acquisition device is used for acquiring electric signals of a generator rotor shaft; the control device is connected with the electric signal acquisition device and the electromagnet; the control device is configured to control the power-on state of the electromagnet according to the electric signal; the power-on state comprises a power-on state and a non-power-on state; the power-on state comprises a reverse power-on state; and when the electromagnet is in a non-electrified state or a reverse electrified state, the permanent magnet is far away from the electromagnet and drives the cleaning brush to move towards one side of the generator rotor shaft, so that the cleaning brush is in contact with the generator rotor shaft. According to the technical scheme, the generator rotor shaft can be automatically cleaned, the processing efficiency of generator shaft voltage high alarm is improved, and the operation and maintenance cost of power generation is reduced.

The invention belongs to the technical field of magnetic particle imaging, particularly relates to a time sequence magnetic nanoparticle imaging device and method for detecting nerve response activity, and aims to solve the problems that the sensitivity of magnetic particle signal detection is not high, a large coil assembly is needed for achieving high magnetic field intensity, the calculation amount is large, and the calculation mode is complex. According to the device, a signal generator outputs a voltage signal, amplifies the voltage signal and then accesses a selection coil and a driving coil; the two selection coils are arranged in a Maxwell configuration and have the same axis; the driving coils are arranged at intervals of 90 degrees from top to bottom, from left to right and from front to back by taking the FFR as the center; the excitation coil, the receiving coil and the selection coil are coaxial; and the high-pass filter filters the signal received by the receiving coil and imports the signal into a computer through a signal acquisition card for time sequence fMPI image sequence reconstruction. According to the invention, the magnetic particle signal detection sensitivity is improved, the volume of the coil assembly is reduced, the calculation complexity and the calculation amount are simplified, and the magnetic particle imaging robustness is improved.

The invention discloses a positive electrode material and a preparation method and application thereof. The sodium ion battery positive electrode material provided by the invention comprises the following components: an O3 type positive electrode material and a P2 type positive electrode material, the O3 type positive electrode material is Sn and Zn in-situ double-doped NanNixZnyFe1 / 3Mn1 / 3O2, n is more than or equal to 0.95 and less than or equal to 1.02, x is more than 0 and less than or equal to 0.33, and x + y is equal to 0.33; the P2 type positive electrode material is NamNipMnqMgzTi (1-p-q-zO2), wherein m is more than or equal to 0.67 and less than or equal to 0.8, p is more than 0 and less than or equal to 0.25, q is more than 0.33 and less than or equal to 0.6, and z is more than 0.01 and less than or equal to 0.05. The high-voltage P2 / O3 mixed-phase sodium ion battery positive electrode material provided by the invention can effectively shorten a high-voltage platform for generating irreversible phase change, and improves the average voltage while ensuring high capacity under 4.2 V high voltage, thereby improving the stability of electrochemical performance and high rate performance of the positive electrode material.

The invention belongs to the technical field of organic semiconductors, and discloses a compound with a benzobisoxazole structure and an organic electroluminescent device containing the compound. The compound with the benzobisoxazole structure has the following mechanism: # imgabs0 #, which is used as a charge transport material and a charge injection material in the organic electroluminescent device, especially as a hole injection layer material, and can greatly improve the voltage, service life and other properties of the organic electroluminescent device.

The invention discloses a gas-liquid separation system and method, and relates to the technical field of water electrolysis hydrogen production, the gas-liquid separation system comprises a gas-alkali liquid small-size separator and a gas-alkali liquid large-size separator, a cyclone inclined plate is arranged in the gas-alkali liquid small-size separator, and the cyclone inclined plate enables gas-alkali mixed liquid to rotate and flow downwards to generate centrifugal force; the centrifugal force is used for performing primary gas-liquid separation on the gas-alkali mixed liquid. Therefore, the gas-liquid mixture can be subjected to first-time gas-liquid separation through the gas-alkali liquor small-sized separator to obtain separated first alkali liquor, and the first alkali liquor is subjected to second-time gas-liquid separation through the gas-alkali liquor large-sized separator to obtain separated second alkali liquor. The gas-alkali mixed liquor can be separated twice through the small gas-alkali liquor separator and the large gas-alkali liquor separator, so that gas-liquid separation is more thorough, that is, the gas content of the second alkali liquor is greatly reduced, and therefore, when the second alkali liquor is sent to the electrolytic bath, the voltage for secondary electrolysis in the electrolytic bath can be slowly increased, and the energy consumption is reduced.

The invention belongs to the technical field of power system automation, and particularly relates to a transformer area power distribution network voltage regulation method, device and equipment in a photovoltaic access scene and a medium. The method comprises the following steps: firstly, determining a topological structure of a transformer area power distribution network, and installing electric energy quality treatment equipment and a flexible voltage regulation device at key nodes; and clustering the distributed photovoltaics by using a clustering algorithm, and determining the adjustment priority of each photovoltaic according to a clustering result. And then, according to the voltage condition of the transformer area side, the corresponding photovoltaic power is controlled in combination with the distributed photovoltaic regulation priority, and the flexible voltage regulation device and / or the electric energy quality treatment equipment are / is regulated, so that the voltage stability is realized. According to the method, the flexibility and the accuracy of voltage regulation are improved, the distributed photovoltaic regulation strategy is optimized, the reliability and the stability of the transformer area power distribution network are enhanced, and technical support is provided for energy transformation and industrial upgrading.

The invention belongs to the technical field of power grid grounding fault positioning, and discloses a power distribution network overhead line single-phase grounding fault positioning method and a power distribution network overhead line single-phase grounding fault positioning system. Collecting an electric field signal and a magnetic field signal on the detected overhead line to calculate a voltage instantaneous value, a current instantaneous value and respective full-cycle Fourier amplitude; integrating the product of the voltage instantaneous value and the current instantaneous value in one period, dividing the integral value by the product of the full-cycle Fourier amplitude of the voltage instantaneous value and the current instantaneous value to obtain a ratio coefficient at different positions on the detected overhead line, so as to construct a function of the ratio coefficient with respect to the different positions on the detected overhead line; a single-phase earth fault occurs at the maximum value point of the first derivative of the function. Reverse power transmission is carried out on the basis that a vehicle-mounted power supply is combined with a distribution transformer, the amplitude of an injection signal is enhanced, rapid and accurate positioning of a single-phase earth fault point of the power distribution network is achieved in cooperation with an electric field and magnetic field sensor carried by the unmanned aerial vehicle, and the reliability of power supply is improved.

The invention belongs to the technical field of generators, and particularly relates to a hybrid nano generator and a power management circuit thereof, comprising a shell, and an electromagnetic power generation unit, a friction power generation unit and a piezoelectric power generation unit which are located in the shell; and a corresponding power management circuit. The interior of the shell is connected with the top end and the bottom end in a penetrating mode through a glass fiber connecting shaft. A friction power generation unit, an electromagnetic power generation unit and a piezoelectric power generation unit are sequentially mounted at the bottom end, opposite to the shell, of the glass fiber connecting shaft; the piezoelectric power generation unit comprises at least four cantilevers and a disc, one end of each cantilever is fixed on the disc, and a mass block is placed on the upper surface of the other end; the center of the disc is connected with a glass fiber connecting shaft, and the inner sides of the upper surfaces of the four cantilevers are covered with PZT materials. According to the hybrid nano generator, vibration energy in the environment can be converted into electric energy, and energy is supplied to wireless sensor network nodes.

The invention relates to the technical field of perovskite cells, in particular to a hole transport material, a hole transport layer, a preparation method of the hole transport layer and a perovskite cell. The hole transport material disclosed by the invention has a general formula of X3Si-G-R, wherein X is selected from halogen, and G is selected from # imgabs0 # or a benzene ring; r is selected from a structure (I) or a structure (II). The hole transport material provided by the invention has a plurality of Si-X bonds which can form stable chemical bond combination with hydroxyl in a substrate oxide, and the hole transport material has saturated vapor pressure at a lower temperature and is suitable for preparing a trans-perovskite solar cell through molecular layer deposition; the hole transport material can improve the interface stability of the hole transport layer, so that the stability of the perovskite cell is improved, and the photoelectric conversion efficiency of the perovskite cell is improved.

The embodiment of the invention discloses an output driving circuit, an impedance calibration circuit and a memory, and the output driving circuit comprises a pull-up main transistor and a pull-down main transistor. The pull-up main transistor and the pull-down main transistor are both N-type MOS transistors; the source electrode of the pull-up main transistor and the drain electrode of the pull-down main transistor are both connected to a bus; the drain electrode of the pull-up main transistor is connected with a power supply, and the grid electrode of the pull-up main transistor receives a pull-up main control signal; the source electrode of the pull-down main transistor is grounded, and the grid electrode of the pull-down main transistor receives a pull-down main control signal; the pull-up main control signal and the pull-down main control signal are opposite in phase; the substrate electrode and the source electrode of the pull-up main transistor are in short circuit.

The invention discloses a pulse electrochemical crystallization coupled composite constructed wetland system which comprises an energy system, a pulse electrochemical crystallization pond and a composite constructed wetland system, and the energy system supplies energy to the pulse electrochemical crystallization pond and the composite constructed wetland system. Aquaculture wastewater firstly enters a pulse electrochemical crystallization pond, struvite (MAP) sediment is formed through electrochemical crystallization, ammonia nitrogen and phosphate in the wastewater are efficiently removed, and partial removal of organic matter is achieved. Then the wastewater enters a composite artificial wetland system, and the wastewater is deeply purified under the action of filler filtration / adsorption, microbial assimilation / conversion and plant absorption. The pulse electrochemical crystallization coupled composite constructed wetland system is compact in structure, and the defects of high energy consumption of direct-current electrochemical crystallization and low purification efficiency of a traditional constructed wetland are overcome through physical-chemical-biological multi-path coupling enhanced culture wastewater treatment.

The utility model relates to the technical field of power electronic devices, in particular to a double-sided heat dissipation silicon carbide power module packaging structure, which comprises a plurality of silicon carbide power devices, an upper ceramic substrate and a lower ceramic substrate. The silicon carbide power devices are placed on the copper layer through the upper nano-silver sintering layer, the metal gasket and the lower nano-silver sintering layer, the silicon carbide power devices on each ceramic substrate are connected through the metal connecting wire, the upper ceramic substrate and the lower ceramic substrate are connected through the metal connecting column, and the radiators are arranged outside the upper ceramic substrate and the lower ceramic substrate respectively. According to the structure, the double-sided radiator and the nano-silver sintering material are used, so that the heat dissipation performance of the whole module is improved, the service life of a packaging body is prolonged, and the packaging body is more aging-resistant.

The utility model relates to a battery cover plate assembly, an assembled battery and a power battery pack, which are used for solving the technical problem that the total voltage and the power reserve of the power battery pack cannot be considered at the same time. The battery cover plate assembly is used for being arranged between the end faces of two shells, battery cells are arranged in the shells, a positive tab and a negative tab are formed, the battery cover plate assembly comprises a cover plate main body, a conductive column and an insulating injection molding body, the cover plate main body is provided with a through hole through which an injection molding material flows, the cover plate main body is used for being fixedly connected with the two shells in a sealed mode, and the conductive column penetrates through the through hole. The insulation injection molding body is embedded with the cover plate main body and the conductive column through the through holes, so that the cover plate main body and the conductive column are insulated from each other, the insulation injection molding body can be inserted into the end faces of the shells, the two end parts of the conductive column penetrate out of the insulation injection molding body, one of the two end parts is used for being in conductive contact with a positive tab of one of the two shells, and the other end part is used for being in conductive contact with a negative tab of the other shell. And the other one of the two end parts is used for being in conductive contact with the negative tab of the other one of the two shells.

The invention discloses a preparation method and application of composite nano-silver paper with a low thermal expansion coefficient, and the preparation method comprises the following steps: S1, diluting a dispersion solution obtained after surface modification of a nanoscale ceramic material to obtain a diluent; s2, uniformly mixing a diluent and the silver nanowire mother liquor to obtain a mixed liquor, wherein the solid content ratio of the nanoscale ceramic material in the diluent to the silver nanowire in the silver nanowire mother liquor is (0.3-5): 100; and S3, carrying out solid-liquid separation, drying and pre-pressing on the mixed solution to obtain the composite nano-silver paper. By adding the nanoscale ceramic material, the thermal expansion coefficient of the silver layer after hot pressing sintering can be effectively reduced, and therefore the cold and hot impact performance is improved.

The invention relates to the field of battery materials, in particular to a positive plate and a lithium ion secondary battery, the positive plate comprises a current collector, a bottom coating layer located on at least one side of the current collector and a positive electrode active material layer located on one side, away from the current collector, of the bottom coating layer, the bottom coating layer comprises metal oxide, and the positive electrode active material layer comprises metal oxide. The total mass of the metal oxide is 100%, the metal oxide comprises 50%-70% of titanium dioxide, 25%-40% of tin oxide and more than 0 and less than or equal to 25% of antimony oxide, and the titanium dioxide, the tin oxide and the antimony oxide in the bottom coating are expanded, shrunk and the like when the battery is overcharged; the bottom coating is separated from the current collector, so that the positive plate is not electrically connected, the voltage of the battery is rapidly increased to the overcharge cut-off voltage, the structure of the positive active material is stable, the battery can be effectively prevented from overcharge failure, the safety of the battery is improved, overcharge protection is realized, and meanwhile, the normal cycle performance of the battery is not influenced.

A preparation and surface coating method of a carbon nanotube modified coating for improving surface flashover voltage of an epoxy composite material belongs to the field of high-voltage insulating materials, and comprises the following steps: weighing preheated epoxy resin and anhydride curing agent according to a ratio, putting into an oil bath environment, stirring, adding an accelerant, and continuously stirring; the defoamed solution is poured into a mold and placed in a drying oven for multi-stage heating curing, and an epoxy matrix is obtained; mixing the dried 0.15 wt% of carbon nanotube particles with an anhydride curing agent, and then carrying out mixed ultrasonic treatment by adopting an ultrasonic instrument; adding the preheated epoxy resin into a mixture of the carbon nanotube particles and the anhydride curing agent, stirring, adding an accelerant, continuously stirring, and carrying out vacuum defoaming, so as to obtain a coating material; and coating the surface of an epoxy matrix with the coating material, and putting the epoxy matrix into a drying oven for multi-stage drying and curing to obtain the insulating material coated with the surfaces of the epoxy / carbon nanotube particles. According to the method provided by the invention, the surface electric field distortion can be obviously reduced, and a foundation is laid for improving the direct-current surface flashover performance of the insulating material.

The invention provides a charcoal-coated lithium ion doped sodium ferric silicate composite material as well as a preparation method and application thereof, and belongs to the technical field of sodium ion batteries. The sodium iron silicate is modified in a lithium ion doping manner, so that the specific discharge capacity of the sodium iron silicate can be effectively improved; the lithium ion doped sodium iron silicate material is subjected to carbon coating by adopting the charcoal, so that the cycle performance of the sodium iron silicate can be effectively improved; according to the invention, lithium ion doping and carbon coating methods are adopted at the same time, so that the electrode material has the characteristics of high conductivity, high specific capacity, excellent cycle stability and the like. Results show that the capacity of the charcoal-coated lithium ion-doped sodium ferric silicate composite material prepared by the invention is retained by 82% after 50 cycles at a voltage window of 1.5-4.5 V and a current density of 0.05 C, and the cycle performance is obviously improved.

The invention discloses a low-trigger high-maintaining-voltage silicon-controlled electrostatic protection device and a manufacturing method thereof, an N trap is added to the right side of a cathode of a traditional double-trap silicon-controlled device to form three traps, the three traps are connected to an anode through N + injection, and compared with a traditional one-way low-trigger silicon-controlled electrostatic protection device, the low-trigger high-maintaining-voltage silicon-controlled electrostatic protection device has a shorter distance between the cathode and the anode. Besides, an NMOS (N-channel Metal Oxide Semiconductor) and P + injection are embedded in a P trap of the device, a grid drain of the NMOS is connected with the P + injection, a source of the NMOS is connected with a cathode, a surface ESD (Electro-Static Discharge) current discharge path is added on the basis of a traditional unidirectional silicon controlled electrostatic protection device, and the positive feedback effect of the SCR discharge path can be effectively inhibited. Therefore, the device has the characteristics of low trigger voltage and high maintaining voltage, and a core circuit of a chip is effectively protected from the risk of latching. The device can be applied to ESD protection of the I / O port with the working voltage of 0-5.5 V.

The invention discloses a method for designing a long-distance laser battery assembly array for space, which comprises the following steps of: arranging an annular laser battery array on a plane where a hybrid laser battery array is located, and filling laser battery monomers with different sizes in the annular laser battery array to complete the layout of the hybrid laser battery array; a substrate used for pasting the hybrid laser battery array is designed, the substrate comprises a heat dissipation substrate and a PCB substrate which are oppositely connected, and the heat dissipation substrate is provided with an air-cooled or water-cooled heat dissipation structure; according to the designed hybrid laser battery array layout, trace point punching sites are arranged on a heat dissipation substrate and a PCB substrate, circuit series-parallel connection design is conducted on the back face of the PCB substrate, and a battery electrode lead penetrates through the back face of the substrate to be welded; selecting a protective cover plate and pasting the protective cover plate on the front surface of the laser battery monomer; and then the laser battery monomers are attached to the heat dissipation substrate. Through the series-parallel connection optimization design of the laser battery assembly, the series-parallel connection loss is reduced, the heat accumulation of the assembly is reduced, and the efficiency of laser energy compensation is improved.

The invention discloses a synthetic method of a piperidine nitroxide free radical compound formed by connecting an aromatic heterocyclic ring and an aliphatic heterocyclic ring, a derivative of the piperidine nitroxide free radical compound, a positive electrode electrolyte based on the piperidine nitroxide free radical compound and application of the piperidine nitroxide free radical compound in a flow battery. A series of TEMPO nitroxide free radical derivatives in which aromatic heterocycles and fat heterocycles are connected in a substituted manner are prepared and tested by adjusting amino or hydroxyl chains on the 4-site of cyclic nitroxide free radicals to be connected with different aromatic heterocycles and fat heterocycles, the connected substituted heterocycles form extended TEMPO compounds, the conjugation degree of the extended TEMPO compounds is increased, the molecular structure can be well stabilized, and the molecular structure can be used for preparing the TEMPO nitroxide free radical derivatives. Disproportionation-dimerization and secondary ring-opening reaction of a cyclic nitroxide free radical structure are inhibited, and the stability is improved, namely the cycle life of the battery is prolonged and the capacity of the battery is increased. The invention provides a new strategy for constructing a high-performance neutral aqueous organic flow battery, and can be suitable for large-scale energy storage.

The embodiment of the invention provides a redundant power supply system, method and device of a server. The system comprises a host power supply and a slave power supply, and a first primary fault detection control unit is used for controlling the slave power supply to be actively shut down, activating a first booster circuit unit to work and sending a first alarm signal to the host power supply when it is detected that an input power failure abnormity exists in a first primary high-voltage input part; and the second primary fault detection control unit is used for activating the second combining circuit unit to work when receiving the first alarm signal so as to trigger the first energy storage capacitor to transmit electric energy to the second energy storage capacitor, so that the second energy storage capacitor is boosted. The technical problems of low stability, low reliability and short power supply duration of a redundant power supply scheme of a server in related technologies are solved, and the effects of improving the stability, the reliability and the power supply duration of the redundant power supply scheme of the server are further achieved.

The invention provides a high-conductivity rechargeable cement-based battery and a preparation method thereof, and belongs to the technical field of energy storage. A positive electrode and a negative electrode are prepared through a particle dispersion method; the iron particles dispersed in the cement matrix are negative electrodes, the manganese dioxide particles dispersed in the cement matrix are positive electrodes, and the cement pore solution is electrolyte; and polyvinyl alcohol and K3Fe (CN) 6 dispersed in the cement matrix are used as additives. The invention also provides a preparation method and application of the rechargeable cement-based battery. According to the invention, polyvinyl alcohol commonly used in the cement slurry is used to improve the ionic conductivity of the positive and negative electrodes and the electrolyte cement matrix at the same time, the preparation method is simple, the raw material cost is low, and the preparation of the high-conductivity rechargeable cement-based battery is realized through the addition of polyvinyl alcohol and K3Fe (CN) 6 and formula design. The cement-based battery provided by the invention keeps the strength required by cement as a building material, has higher voltage and output current, and shows higher energy density and longer cycle life.

The invention relates to the technical field of power distribution network voltage control, and discloses a power distribution network partition voltage optimization method based on a distributed photovoltaic cluster, and the method comprises the steps: obtaining the reactive voltage sensitivity between nodes, calculating the electrical distance between the nodes, carrying out the cluster division of a power distribution network, and obtaining the cluster of the power distribution network; voltage optimization is carried out by taking the cluster as a basic regulation and control unit, and when reactive power in the cluster is sufficient, the photovoltaic reactive power support quantity in the cluster is calculated based on the regional reactive power-voltage sensitivity of the cluster to which the voltage out-of-limit node belongs; when reactive power in the cluster is insufficient, mapping an optimization target of a voltage out-of-limit node of the original cluster to a boundary node of an adjacent cluster, only exchanging information of the boundary node with the adjacent cluster, and suppressing voltage out-of-limit by adjusting the voltage of the boundary node of the adjacent cluster; according to the method, reactive power resources can be effectively utilized and voltage out-of-limit is suppressed, so that voltage optimization is realized, more reactive power reserve can be reserved while network loss is optimized, and the voltage control time is remarkably shortened.

The utility model provides an energy storage high-voltage box confluence cabinet, comprising a cabinet body, a plurality of high-voltage boxes, a confluence assembly, a protection member and a lightning protection assembly, the plurality of high-voltage boxes are arranged in the cabinet body, and the positive and negative input ends of the plurality of high-voltage boxes are respectively and electrically connected with the positive and negative output ends of corresponding energy storage batteries; the protection part is arranged in the cabinet body, the positive and negative output ends of the plurality of high-voltage boxes are electrically connected with the positive and negative input ends of the protection part through the convergence assembly, and the positive and negative output ends of the protection part are correspondingly and electrically connected with the positive and negative input ends of the energy storage converter respectively; the lightning protection assembly is arranged in the cabinet body, the positive input end and the negative input end of the lightning protection assembly are correspondingly and electrically connected with the positive output end and the negative output end of the protection piece respectively, and the grounding end of the lightning protection assembly is grounded. And the damage to equipment on the line caused by sudden generation of peak current or voltage on the line is avoided, and the safety performance is improved.

The invention discloses a high-pressure water spraying rust removal device for a ship outer plate, and belongs to the technical field of ship rust removal. The high-pressure water spraying rust removal device comprises a water tank, a plurality of cameras are fixedly mounted on one side of the water tank, and a controller is fixedly mounted on the front side of the water tank; the spraying mechanism is used for spraying high-pressure water flow, the spraying mechanism comprises a high-pressure water pump and a spraying cylinder, a water outlet of the high-pressure water pump is communicated with a hose, the top end of the hose is communicated with the spraying cylinder, and the outer side of the spraying cylinder is communicated with a plurality of high-pressure nozzles; the lifting driving mechanism is used for driving the water tank to lift; and the adjusting mechanism is used for adjusting the power of the driving motor and the high-pressure water pump, and the adjusting mechanism comprises a resistor strip, a mounting frame and a U-shaped frame. Through the monitoring mechanism and the spraying mechanism, the spraying pressure and speed can be automatically adjusted according to the spraying distance and the corrosion degree of the ship outer plate, so that the structure of a thick rust layer is effectively damaged, and a base material is prevented from being damaged.

The utility model relates to a battery cover plate assembly, an assembled battery and a power battery pack, which are used for solving the technical problem that the total voltage and the power reserve of the power battery pack cannot be considered at the same time. The battery cover plate assembly is used for being arranged between the end faces of two shells, battery cells are arranged in the shells, a positive electrode lug and a negative electrode lug are formed, the battery cover plate assembly comprises two cover plate main bodies, the cover plate main bodies are provided with through holes through which injection molding materials flow, and the two cover plate main bodies are parallel to each other and are arranged at intervals along the central axis of the through holes; the cover plate main bodies are used for being fixedly connected with the shell in a sealed mode, the conductive column penetrates through the two through holes, the insulation injection molding body is embedded with the two cover plate main bodies and the conductive column through the through holes so that the two cover plate main bodies and the conductive column can be insulated from each other, and the insulation injection molding body can be inserted into the end face of the shell. And two end parts of the conductive column penetrate out of the insulating injection molding body and are respectively in conductive contact with the positive tab of one of the two shells and the negative tab of the other one of the two shells.

The invention belongs to the technical field of urbanization cable distributed capacitance compensation, and discloses a multi-winding grading reactor applied to urbanization cable distributed capacitance compensation, which comprises a multi-winding transformer, a passive series / parallel coarse tuning reactor shunt, an active inversion fine tuning reactor shunt and a controller, the multi-winding transformer comprises a primary winding and N secondary windings, and N is greater than or equal to 3; two ends of the primary winding are connected in series in a power grid cable line; the M secondary windings and the corresponding M bidirectional thyristors are connected in series or / and in parallel to form a passive series / parallel coarse tuning reactor shunt, and M is less than N; the active inversion fine adjustment reactor shunt comprises a single-phase full-bridge conversion circuit, and the alternating current side of the single-phase full-bridge conversion circuit is connected with any one of the residual N-M secondary windings in the multi-winding transformer; and the controller controls the coarse adjustment and fine adjustment reactor shunt to perform coarse adjustment and fine adjustment on the system output inductive impedance so as to perform on-demand compensation on the impedance of the distributed capacitor, and the compensation precision and the power grid electric energy quality can be improved.