183results about How to "Change connection method" patented technology

The invention discloses an electric automobile charging station integrating charging, storing and discharging. The electric automobile charging station comprises an AC / DC converter, a two-way DC / DC converter, an energy storage pile and a one-way DC / DC converter, wherein the alternating-current side of the AC / DC converter is connected with a power grid, so that alternating currents from the power grid are converted into direct currents, and the direct currents are transmitted to a bus; one end of the two-way DC / DC converter is connected with the bus, the other end of the two-way DC / DC converter is connected with the energy storage pile, and two-way energy transmission between the energy storage pile and the bus is achieved; the one-way DC / DC converter provides a power supply for the electric automobile and transmits the direct currents on the bus to the electric automobile; the energy storage pile is used for storing electric energy, and automatic charging and discharging are achieved through the two-way DC / DC converter. On the basis of guaranteeing normal charging of the electric automobile, a connection mode between a charging system and an energy storage system and a charging and discharging mode of the energy storage pile are improved, a charging peak value load curve and a smooth charging load curve of the charging station can be effectively reduced, shallow-charging and shallow-discharging conducted on an energy storage battery are achieved, power distribution capacity of the charging station is reduced and the cycle life of a power battery is prolonged.

The invention provides a cold and hot integrated box body structure comprising a main body of a box body with an upper opening, wherein the main body of the box body comprises a bottom plate and a side plate, the bottom plate and the side plate are used for constituting an accommodation cavity for accommodating a battery, a liquid cooling system and a heating system are alternately distributed in the bottom plate, at least one fluid inlet and at least one fluid outlet communicated with the liquid cooling system are formed in the side plate, the liquid cooling system is cooling fluid flow channels distributed in the bottom plate in a snake shape, the heating system comprises a first hollow cavity arranged between cooling fluid flow channels and a heating device padded in the first hollow cavity, and a flow channel bridge used for changing the flow direction of the fluid is arranged at the reserving site of the cooling fluid flow channel. According to the box body structure provided by the invention, the liquid cooling system, the heating system and a heat insulation system are highly integrated with the section bar box body, thereby improving the weight energy density ratio and the volume energy density ratio of the battery and reducing and even eliminating the fluid leakage risk of the cooling fluid.

The invention relates to an array substrate, a liquid crystal panel and a liquid crystal display device. The pixel arrangement method of the array substrate adopts a DLS scheme, and overcomes the defect of array overturn occurred in the prior art by changing the connecting relationship between pixels and grid lines and data wires when the array substrate is driven by a point overturn driving mode,thereby improving the display quality of the liquid crystal display device using the array substrate.

The invention relates to the technical field of wind power generation equipment, in particular to a single-frame type impeller of a wind turbine. An existing horizontal-axis wind turbine affected by the structure and materials is low in wind utilization rate, high in design requirements, heavy and large, difficult to maintain and easy to overspeed and gallop. The single-frame type impeller of the wind turbine comprises a wind wheel frame, a vane adjusting device, a support and diagonal support rods, wherein the vane adjusting device is connected with the support and assembled at the front end of a turbine spindle, the wind wheel frame is connected with the support via the diagonal support rods, and vanes are assembled in the wind wheel frame and around the vane adjusting device via shafts, the vane adjusting device is provided with a closed adjusting chamber, and a gear type or connecting rod type adjusting mechanism is assembled in the adjusting chamber. By changing the vane connecting mode, the number of the vanes is increased, wind energy utilization efficiency is improved, output power of the wind turbine is increased, volume, height and weight of the wind turbine are reduced, and the single-frame type impeller is reasonable in structure and convenient for daily maintenance and overhauling.

The invention discloses a downhole safety valve, wherein a central tube is arranged in a main body consisting of a top joint, a valve body, an outer cylinder and a tail joint connected sequentially; the upper end of the top joint and the lower end of the tail joint are respectively connected with an external oil tube; a corrugated tube assembly is arranged in the gap between the outer cylinder and the central tube, and the bottom end of the corrugated tube assembly is connected with a positioning ring fixed on the peripheral wall of the central tube; a boss is formed on the inner wall of the lower port of the outer cylinder, a pressure spring is sleeved on the periphery of the central tube between the lower side of the positioning ring and the boss, and a plate valve assembly is connected to the bottom end of the outer cylinder; the top joint is provided with a control line, the control line is embedded on the top joint through a control line connection assembly and communicated with a hydraulic oil passage formed in the valve body wall, and the bottom port of the hydraulic oil passage in the valve body wall is connected with the top end of the corrugated tube assembly. The downhole safety valve can be used in extreme environment with well conditions such as super high temperature steam thermal recovery, high gas tightness requirement, ultradeep installation, high sandiness environment and high corrosion.

The invention discloses a cooling unit for a traction system. The cooling unit for the traction system comprises a bearing and supporting framework, an air filtering device, a heat radiator, an air guide cylinder, a fan box body, an expansion water tank, a water pump and a fan unit as well as a water system pipeline, an oil system pipeline, pressure sensors, temperature sensors, a wire junction box and an electric rapid connector, wherein the water system pipeline and the oil system pipeline are communicated with the heat radiator; and the pressure sensors and the temperature sensors are arranged on the pipelines. An integral matched design method is adopted for the cooling unit provided by the invention; a cooling unit of a traction transformer and a cooling unit of a traction converter are integrated into the same unit, and at the premise of simultaneously meeting the heat radiation requirements of the traction transformer and the traction converter, the cooling unit for the traction system is small in size, light in weight, low in noise, compact in structure, high in reliability, convenient to install, and low in maintaining and repairing work load.

The invention discloses an operating mechanism and a miniature circuit breaker. The problems that false tripping of the conventional miniature circuit breaker easily happens, or the conventional miniature circuit breaker is insensitive to trip, the assembling difficulty is high and the failure rate is high are mainly solved. The operating mechanism is characterized in that a bracket (3) has an integral structure; a central shaft sleeve (6) provided with a central hole and a trip hinged shaft (7), a latch resetting torsion spring mounting shaft (8) and a moving contact mounting shaft (9) which are distributed in a triangle shape are arranged on the bracket (3); a trip (2) is a body piece; a moving contact torsion spring (22) is wound outside the moving contact mounting shaft (9); a mounting seat (18) on the trip (2) is sleeved outside the central shaft sleeve (6) and can rotate relative to the central shaft sleeve (6); and a latch resetting torsion spring (23) is wound on the latch resetting torsion spring mounting shaft (8). By the operating mechanism, the structure of the bracket is changed, and the operating mechanism is compact in structure and convenient to mount; and moreover, the miniature circuit breaker is convenient to assemble and is sensitively and reliably tripped.

The invention discloses an intersected rectification input-parallel and output-parallel combined converter. A main circuit of the combined converter comprises two isolation bridge-type module circuits of which the rectification outputs are connected together in an intersection manner; each bridge-type module circuit consists of a half bridge circuit or a full bridge circuit with a blocking capacitor, a high-frequency transformer, a rectification circuit and an output filter inductor; the half bridge or full bridge circuit is connected with the original edge of the transformer; the rectification circuit is connected with the auxiliary edge of the transformer; and the rectification outputs are connected with the two output filter inductors in the intersection manner. The input ends of the bridge-type circuits are connected in parallel with each other, and the output ends of the output filter circuits are connected in parallel with each other. By the intersection rectification circuit, the inconsistent rectification output voltages caused by inconsistent circuit parameters can be counteracted, so that natural current sharing of the two output filter inductors can be realized, and input natural current sharing of the two bridge-type circuits can be realized simultaneously; a current-sharing control ring is not needed to be arranged, and the current of the bridge-type circuits is not needed to be sampled, so the control step is simplified greatly, the power density and the reliability of the combined converter are improved, and the cost is reduced.

The invention discloses a multi-module combined converter with a recycling cross rectification function. The multi-module combined converter comprises a plurality of modules which are connected together, wherein each module consists of a bridge-type circuit, a high-frequency isolation transformer, a rectification circuit and an inductor which are sequentially connected; and the input terminals of the bridge-type circuits in all the modules are connected in parallel, and the output terminals of the inductors are also connected in parallel. The input terminals and the output terminals of the plurality of modules of the combined converter can realize natural flow equalization without current sampling of the modular circuit and a flow equalization control ring, so that the control process is simplified, the reliability and the power density of the combined converter system are improved, and the cost is lowered.

The invention discloses a radio frequency tag capable of controlling read-write. The radio frequency tag comprises a tag chip, a tag antenna and a third-party sensitive element, wherein the tag antenna and the tag chip are connected with the third-party sensitive element, the third-party sensitive element switches between on and off under the action of a third-party factor, when the radio frequency tag is an ultrahigh frequency RFID tag, the on or off of the third-party sensitive element enables the impedance match or impedance mismatch between the tag antenna and the tag chip; and when the radio frequency tag is a high frequency RFID tag or a low frequency RFID tag, the on or off of the third-party sensitive element ensures that the tag antenna and the tag chip can be successful connected or disconnected. The invention also discloses a monitoring method of the radio frequency tag capable of controlling read-write. The radio frequency tag without I / O function of the invention can be used to obtain the physical condition and external environment of the radio frequency tag and expand the applications of the radio frequency tag.

The invention discloses an integrated rail-traveling wave-shaped blocking edge and transverse partition plate belt conveyor. The integrated rail-traveling wave-shaped blocking edge and transverse partition plate belt conveyor is composed of a moving rail-traveling head rack, an overall integrated tail rack and a middle rack body. An integrated and modularized mode and an wave-shaped blocking edgeand transverse partition plate conveyor belt are adopted, therefore, disassembling and assembling are convenient, moving is quick, stability and fastness are achieved, large-inclination-angle conveying is achieved, the length and the angle of the rack body are convenient to adjust, and then the subway construction vertical soil digging condition is met. According to the integrated rail-traveling wave-shaped blocking edge and transverse partition plate belt conveyor, disassembling and assembling are convenient, quick moving can be achieved, efficient soil digging can be achieved in an open cutmethod of a subway station, and the integrated rail-traveling wave-shaped blocking edge and transverse partition plate belt conveyor has the great advantages in the aspects of surrounding traffic relief and building and foundation pit deformation control.

The invention discloses an eye massager suitable for different eye socket sizes and a connecting and using method thereof. According to the technical scheme, the eye massager suitable for different eye socket sizes can be suitable for users with different sexes and in different age groups by adjusting the position of a massaging section, and massaging pertinency is improved. According to the connecting and using method, the connecting mode of an air tube is changed, the moving mode of a moving block on the eye massager is changed, the massaging mode is changed, and therefore the massaging effect is changed.

The invention relates to the field of elevator design and manufacturing technologies, in particular to elevator car wall panels spliced by using slide slots and buckles. One side of each car wall panel is provided at least two buckles, the other side is provided at least two openings, and the bottom end of the car wall panel is provided at least two slide blocks. The car wall panels are connected through the buckles and the openings, and the car wall panels are connected with the chutes arranged on the bottom of the slide slots through the slide blocks. During installation, the slide blocks are installed on the bottom ends of the car wall panels, the slider slots are installed on the car bottom, the car wall panels are embedded into the slide slots on the car bottom through the opening on the slide slots, the car wall panels are connected through the buckles and the openings, clamp nuts are adjusted so as to adjust the gap between the car wall panels and the car bottom, and thus, the ventilation in the car can be adjusted conveniently. All constructions can be completed in the elevator car. The invention has the advantages of more reasonable and convenient elevator car manufacturing and installation and cost saving.

The invention discloses a piecewise sliding contact line power supply connection device which has a simple structure, is simple and easy to operate, safe and reliable, and low in cost, and can realize the piecewise sliding contact line power supply connection method. The piecewise sliding contact line power supply connection device is arranged at the fracture part of a fixed sliding contact line and a movable sliding contact line or the fixed sliding contact line and a maintenance sliding contact line, and comprises a copper bar, amounting bracket, a decelerating transmission mechanism, a motor and a control box, wherein the mounting bracket is mounted and fixed on the mounting surface, the decelerating transmission mechanism is mounted and fixed on the mounting bracket, and the copper bar is connected with the decelerating transmission mechanism; the motor is mounted and fixed on the mounting bracket, and the motor is connected with the decelerating transmission mechanism; the control box is electrically connected with the motor to control the motor to rotate; the motor drives the copper bar to move upwards and downwards in the vertical direction through the decelerating transmission mechanism, so as to realize connecting or breaking off the electrical connection of two piecewise sliding contact lines safely and reliably.

The invention discloses a distributed mike system, which comprises a distributed mike with a DSP. The distributed mike is provided with a plurality of built-in heads, and the DSP acquires audio data input by the plurality of built-in heads through an audio port and outputs the audio data to a terminal through an Ethernet port. The distributed mike system provided by the invention changes single output and connection modes of the current mike, can integrate the audio inputs of a plurality of mikes, and can realize the output of the audio data of multiple formats as required.

The invention relates to the reactive power compensation technology in a power grid and especially relates to a compensation device with the adjustment of a reactive power capacity by an autotransformer. The device comprises a switching selection switch K and an on-load tap-changer Tf. The autotransformer comprises a main winding and a voltage regulating winding. The voltage regulating winding whose number of turns is NT is independent of the nonadjustable main winding whose number of turns is NG. By using the mutual relation of the two windings, the same polarity direction access and reverse polarity direction access of the voltage regulating winding are realized through the switching selection switch K, thus the rated voltage UBe of the autotransformer can be matched with capacitor rated voltage UCe specified in national standards and industry standards, the ability of adjusting reactive power can reach required 6 to 7, at the same time even in a condition of same autotransformer capacity SBe and capacity adjustment ability M, the autotransformer electromagnetic capacity of the invention is only a half of that in a scheme in the prior art, the corresponding investment cost also can be reduced by nearly a half, thus the economic performance is closer to a fixed grouping method, the technical performance is better than that of fixed grouping method, the service life is longer, and the overall performance is greatly improved.

The invention discloses a steel / wood combined truss connection structure. The steel / wood combined truss connection structure comprises two upper chord members, a first vertical web member, second vertical web members, diagonal web members, first lower chord members, second lower chord members, and a connecting piece; the connecting piece comprises a supporting block, installation blocks, first connecting blocks, second connecting blocks, third connecting blocks, fourth connecting blocks, fifth connecting blocks, sixth connecting blocks, seventh connecting blocks, eighth connecting blocks, first fixing blocks, second fixing blocks, bolts, and rotating members; the supporting block is of a pentagonal prism structure; the two first connecting blocks are symmetrically fixedly arranged on thetwo sides of the lower [art of the supporting block. According to the steel / wood combined truss connection structure, the upper chord members, the first vertical web member, the second vertical web members, the diagonal web members, the first lower chord members, and the second lower chord members are be fixed, a conventional notch and tooth joint manner is avoided, welding connection is avoided,the connection precision among the members is higher, the structure is more compact, no welding joint or welding rust is generated, and the appearance is beautiful.

The invention relates to the field of sensor detection equipment, and specifically relates to a detection tool for detecting a pressure transducer. The detection tool comprises a detection pedestal, amain stream channel used for gas circulation is arranged in the detection pedestal, at least one placing groove used for placing a sensor is arranged on the detection pedestal, each placing groove communicates with the main stream channel, and end portions of the main stream channel are connected with air-inlet assemblies. According to the detection tool, the connection mode of the conventional pressure transducers during detection is changed, the placement and the fixing of the sensors are facilitated, multiple stations are provided so that multi-station measurement can be rapidly realized,the sealing of the sensors and the placing grooves is realized by employing the self gravity of the sensors, and the sealing effect is optimized.

The invention discloses a separated assembly type gate which comprises at least one main vertical post (10), two side vertical posts (20), a plurality of upper transverse beams (31), a plurality of lower transverse beams (32) and a plurality of railings (50), wherein the main vertical post (10) and the two side vertical posts (20) are respectively arranged on both ends of the gate; the upper transverse beams (31) and the lower transverse beams (32) are inserted with the main vertical post (10) by a first connecting piece (41) and a second connecting piece (42), and are also inserted with the side vertical posts (20) by the first connecting piece (41); the railings (50) are arranged between the main vertical post (10) and the side vertical posts (20) in parallel at intervals; and the upper end and the lower end of each railing are respectively connected with the upper transverse beams (31) and the lower transverse beams (32). All components are connected in an inserting mode, and can be packed and transported in a separated mode, and assembled on site; and the appearance of the gate is neater and more attractive by the internal installation of the connecting pieces.

The invention belongs to the technical field of relay production, and particularly relates to a self-reset magnetic latching relay production line and a production process thereof. Protection hoods fixed in a screw joint manner are arranged on the outer sides of glue injection heads, each protection hood is of a spiral spring structure, and the bottoms of the protection hoods are flush with the bottoms of dispensing needles. Auxiliary cotton pads in detachable connection are arranged on the inner sides of the bottom ends of the protection hoods. When the dispensing needles move up and down inmounting racks along with driving of lifting air cylinders, the protection hoods can be compressed to the outer sides of the glue injection heads along with pressing down of the dispensing needles during pressing down. When the dispensing needles ascend, the protection hoods lose pressure of outer workpieces, the protection hoods rest to the initial state, the bottoms of the protection hoods are flush with the bottoms of the dispensing needles, and therefore residual glue generated to the outer sides of the dispensing needles due to dispensing glue overflowing is cleaned away and wiped, and the situation that dispensing needle use of the next time is influenced by glue overflowing curing on the dispensing needles is avoided. When the dispensing needles are not used, the protection hoods covering the outer portions of the dispensing needles can achieve a good protection effect on the dispensing needles, the situation that the dispensing needles suffer from outer impacting to deform is avoided, and use safety and stability of the dispensing needles are increased.

The invention discloses a voltage source type asymmetric pulse converter and belongs to the field of an electrical and electronic converter. The converter comprises a first DC voltage source, a second DC voltage source and a pulse converter circuit. The pulse converter circuit is composed of five switch tubes and five diodes. The invention also discloses an output pulse control method by using the pulse converter. According to the invention, two DC voltage sources are utilized as an input, the pulse converter circuit is composed of the five tube switches and the five diodes so that multiple pulse output can be realized through control over the conduction of the switch tubes. Besides, the structure is simple, the control is convenient, and the disadvantages of single output pulse form and narrow application scope of a conventional pulse converter can be overcome.

The invention provides a fluid coupling rotor and a production method thereof. The fluid coupling rotor comprises an inner flange plate, an annular turbine cavity, a blade and an outer flange plate. The inner flange plate and the annular turbine cavity are connected integrally. The blade and the annular turbine cavity are welded. The outer flange plate and the annular turbine cavity are welded. The annular turbine cavity is formed by die forging. The inner flange plate, the annular turbine cavity, the blade and the outer flange plate are made of stainless steel. The production method comprisesthe steps of material selection, initial shaping, die forging modeling, forming processing of the annular turbine cavity and blade welding. The traditional rotor structural connection mode is changed, pollution hazards to the environment due to the production process are reduced, and energy consumption is lowered. The fluid coupling rotor obtained by the production method is good in smooth flatness, regular in structure, high in precision and large in material improvement space, the rotor is repairable, production cost is lowered greatly, and energy is saved.

The invention discloses a high-gain boost converter based on an active network, belonging to the field of power electronic converters. The high-gain boost converter based on the active network is constituted by combining a switched capacitor unit composed of a capacitor and a diode based on an active network unit composed of a power switch tube and an inductor, which can achieve the effect of increasing the voltage gain by controlling the on-off of the power switch tube and the diode and changing the connection mode of the inductor and capacitor in the circuit. The high-gain boost converter based on the active network has high voltage gain, small switching stress, and small average value of the inductor current, which is helpful to reduce the conduction loss of the switch tube and the diode and reduce the volume of a single inductor, and is suitable for new energy power generation systems such as fuel cells and photovoltaic cells.

The invention provides a portal crane current collector, which is characterized by comprising an insulated base, a telescopic bar, a nylon insulated rod, a traveling pulley and a pulley base, wherein the insulated base is connected with the lower end of the telescopic bar; the lower end of the nylon insulated rod is connected with the upper end of the telescopic bar, and the upper end of the nylon insulated rod is connected with the pulley base; the pulley base is U-shaped, and the travelling pulley is connected in the pulley base via a bearing and is wound with slide wires; the end socket of the bearing is connected with a cable via a copper pig tail; the telescopic bar is used for adjusting the telescopic range of the current collector by means of a pressure spring and a round steel; the travelling pulley replaces a common current collector which depends on a carbon brush to travel; the bearing connecting the travelling pulley with the pulley base is connected with the cable via the copper pig tail so as to directly feedback electricity to the main motor of the portal crane, thus integrating the entire portal crane with the current collector into a whole; and the nylon insulated rod and the insulated base form two insulated barriers, thus preventing circuits from shorted faults and improving safety performance.

The invention relates to an electromechanical device for battery charging and discharging balancing and braking energy recovery. The device is suitable for charging and discharging voltage overall balancing and subsection balancing in the application fields of various secondary batteries and applicable to the motor braking energy recovery, direct-current motor voltage reducing start control and current-double control and circuit connection conversion of an active two-terminal element or a passive two-terminal element. When the device is used for a renewable energy current transforming energy storage system, the battery pack total voltage can be reduced, and the energy storage of voltages of any level is facilitated. The device utilizes two switch driving modes of mechanical shaft driving and electromagnet driving. The two types of electrical work principles are same and used for group conversion of large scale grouped power component connecting circuits. Compared with current semiconductor elements, the device is stable, practical, safe and economical. The device can improve 80% of economic values in the application field.

The invention discloses an inclined double-layer excitation vibrating screen device. The device comprises an inclined vibrating screen frame, elastic support mechanisms, an excitation vibrating power mechanism and an excitation vibrating mechanism; upper and lower layers of inclined surfaces for screening materials are formed in the inclined vibrating screen frame; two sets of elastic support mechanisms are respectively arranged on two side surfaces of the inclined vibrating screen frame, and the two side surfaces of the inclined vibrating screen frame are supported by the elastic support mechanisms; the excitation vibrating mechanism is positioned in the middle position in the inclined vibrating screen frame; and the excitation vibrating power mechanism is mounted on the outer side of the inclined vibrating screen frame, and drives the excitation vibrating mechanism to generate the excitation vibration to the inclined vibrating screen frame. The device solves the defect that a screen box of a traditional screening machine only has single layer of material screening surface, and can satisfy the screening operation of materials with different specifications; through novel design, the device is compact in overall structure to achieve the disassembly operation in use; and the device is suitable for the stage treatment of different particle materials in multiple fields to obviously improve the screening efficiency and the treatment capacity.

The invention relates to an automobile front subframe assembly, and belongs to the technical field of automobile frames. An upper plate of the front subframe is provided with a downward lower flanging, the lower flanging extends to a lower plate of the front subframe to enable the upper plate of the front subframe and the lower plate of the front subframe to be enclosed into a rectangular box bodystructure, and a reinforcing edge extending in the horizontal direction is further arranged at the bottom of the lower flanging at the front part of the upper plate of the front subframe; an extension part matched with the reinforcing edge is arranged at the front part of the lower plate of the front subframe, and the reinforcing edge is fixedly connected with the extension part; two mounting grooves with opposite positions are separately formed in both side parts of the front subframe assembly, and front mounting frames are fixedly installed in the mounting grooves; and each front mounting frame is formed by splicing two half frames, and a plurality of supporting pieces are arranged in the two half frames.

The invention provides a lifting power battery bin. A battery bin body is fixed to the inner side of an automobile skirt in the connecting mode of hooks and plug-pins and is higher than the skirt, andthe good passing ability of a whole automobile is kept while rapid battery replacing is achieved. The lifting power battery bin is mounted at the bottom of an automobile, the battery bin body is movably connected with an automobile chassis through the hooks and the plug-pins, the plug-pins are fixed to the two sides of the front side wall and the rear side wall of the battery bin body, the hooksare fixedly connected to the automobile chassis and correspond to the plug-pins, the plug-pins are provided with opening devices and springs, and bin doors are arranged on the two sides of the batterybin body.

The invention belongs to the technical field of preparation of phase change energy storage materials, and concretely relates to a phase change material, and a preparation method and a use thereof. The phase change material comprises an energy storage material and a crystallized porous metal organic material. The preparation method of the phase change material comprises the following steps: mixing the energy storage material with the porous metal organic material, carrying out vacuum pumping at 80-200 DEG C until the pressure is 0-0.08 MPa, and carrying out ultrasonic treatment for 20-100 min to obtain the target phase change material. The phase change material prepared in the invention has the advantages of good stability, no supercooling phenomenon, large energy storage density and good heat conduction property, and can improve the photoelectric conversion efficiency by 20% when applied to photoelectric conversion devices.