54results about How to "With isolation function" patented technology

The invention relates to a sanding device for railway vehicles. The sanding device comprises a sand box, a sanding unit and a sanding control module, wherein the sanding unit comprises a sander and a sand blasting pipe, the sander is installed at the bottom of the sand box and is communicated with the sand box, and a sanding heating box is connected between the sander and the sand blasting pipe; the sanding control module comprises an air channel board, and a sanding solenoid valve, a drying solenoid valve and a pressure reducing valve are installed on the air channel board, wherein the sanding solenoid valve is connected with a sanding wind inlet arranged in the sander through an air channel pipe, the drying solenoid valve is connected with a drying wind inlet arranged in the sander through the air channel pipe, and the pressure reducing valve is connected with a wind supply pipeline. The sanding device has a compact structure and is convenient for fault finding and maintenance. The amount of sanding can be regulated, and the sanding device has a drying function and can prevent sand in the sand box from hardening due to damp. The sanding device has a heating function and can prevent a sanding pipe from freezing at low temperature. The sanding device has an isolating function, and the sander can be switched off by a person in a fault. The sanding device has a testing function and can detect the pressure value of a system during debugging.

A self-strong excitation bidirectional high-voltage gain interleaved switch reluctance motor power converter system comprises a main circuit, an excitation power supply and a bidirectional DC-AC-DC, wherein the main circuit, the excitation power supply and the bidirectional DC-AC-DC are mutually connected. The main circuit is simple in structure, and each phase winding is divided into two branchesconnected in parallel, so that the effect of enhanced excitation is achieved. The storage battery of the excitation power supply has an automatic charging function, and the bidirectional DC-AC-DC ensures that the switched reluctance motor can generate power when operating clockwise and electrically operates in counterclockwise direction. The functions of isolation, high-frequency transformation and high voltage gain is provided. The interleaved control mode during electric operation in counterclockwise direction can reduce the torque pulse. The system is more suitable for power generation / electric operation in different time period.

The invention relates to message switching equipment for networked settlement of social security and medical insurance. The message switching equipment comprises a plurality of groups of data switching modules which are connected with one another, wherein each data switching module comprises an input unit, an authentication unit, a processing unit, an underlying communication unit, a network segment configuration unit, a journal unit and an output unit, and is connected with a data transmission network or an application server for data transmission and data switching. The message switching equipment adopts a four-layer structure, namely, asocial security and medical insurance networked settlement interface, a data switching layer configuration management device, a central data switching and processing unit and a message switching operation system. The invention aims to achieve real-time networking and unified settlement of a larger administrative region, utilizes the centralized data switching application mode to achieve regional social security and medical insurance networked settlement service, provides a reliable data switching mechanism for social security and medical insurance networked settlement, ensures high efficiency of the networked settlement and data switching, and has a favorable interface expansibility.

The invention discloses a frequency converter power electronics controllable loading method based on a grid connected inverter. In a present frequency converter test, a dissipating energy type load completely wastes the electricity energy in a test process, and is difficult to accurately simulate load characteristics of the subsidiary engine of the frequency converter. In the method, the output terminal of a frequency converter is directly in connection with a three-phase grid connected inverter to be used as the artificial load of the frequency converter; the main circuit structure successively comprises a front transformer, an uncontrolled rectifier, an intermediate DC capacitor, an inverter, a filter and a rear transformer from front to back; different current given signals are given to the three-phase grid connected inverter to stimulate different load current characteristics; and the three-phase grid connected inverter is controlled by employing the current inner loop strategy based on a PI regulator in a two-phase rotating coordinate system. The method can be used in a high power frequency converter test, and realize reactive power balance control; in a whole process, almost all energy can be fed back to a power grid.

The invention discloses a combined type greening barrier. The combined type greening barrier comprises supports and horizontal spacer bars and is characterized in that the profiles of the supports and the horizontal spacer bars are of a fore-and-aft and bilateral symmetry structure, a planting space is arranged at the upper parts of the horizontal spacer bars, a water reservoir also serving as a flowing channel is arranged at the lower parts of the horizontal spacer bars, water supplying and draining holes also serving as connection holes which correspond to one another in positions are arranged on the left end surfaces and right end surfaces of the horizontal spacer bars, each support is provided with a through hole from one side surface to the other side surface, any one section of the whole outer surface of each horizontal spacer bar is enclosed in the through hole of each support and spliced in a suspension manner, the supports can be randomly spliced and moved on the whole outer surface of the horizontal spacer bar, the end surfaces of the adjacent horizontal spacer bars are connected in series directly by virtue of the water supplying and draining holes also serving as the connection holes or indirectly through bolts or hollow pipe bolts with a plastic sealing pad, the water reservoir also serving as the flowing channel at the lower parts of the horizontal spacer bars is penetrated to form a combined greening barrier; and a part between any two adjacent supports and the horizontal spacer bars in the combined greening barrier is of a symmetrical structure.

The invention relates to a medical sickbed with a function of facilitating isolation, in particular to a sickbed with the function of facilitating isolation for the medical respiratory medicine department. According to the technical scheme, in order to achieve the technical purposes that the sickbed has the isolation function and is capable of isolating patients suffering from infectious respiratory diseases, the sickbed with the function of facilitating isolation for the medical respiratory medicine department comprises a base, a first support, a second support, a bed board, a first sleeve, afirst spring, a first lifting rod and the like, wherein the left side on the top of the base is connected with the first support, and the right side on the top of the base is connected with the second support. The sickbed with the function of facilitating isolation for the medical respiratory medicine department has the isolation function and is capable of isolating the patients suffering from the infectious respiratory diseases, the life safety of medical workers and accompanying personnel can be protected, gas carrying viruses can be disinfected, a healthy environment of an inpatient ward is protected, the structure is simple, and the sickbed is convenient to use.

The invention discloses a current detecting circuit based on a bi-directional saturation current sensor and a driving method thereof. The current detecting circuit is composed of a magnetic ring current sensor, an H-bridge current detecting circuit and a bridge arm power device driving circuit. The current sensor is used for achieving a high-temperature-resistant operational capability and an isolation function. The H-bridge current detecting circuit makes the secondary side of the current sensor bidirectional saturation, compensates influences of positive and negative residual magnetism on current detection, and eliminates errors of the positive and negative residual magnetism along with temperature drift. A comparator and a D trigger are used for achieving rapid response. Compared with a conventional current detecting circuit, the current detecting circuit of the invention has a high-temperature-resistant operational capability, an isolation function, fast response and high precision, and is suitable for detecting the current of high-temperature-resistant motor driver based on SiC MOSFETs.

The invention discloses a linear isolator, and relates to the field of signal processing. The isolator comprises a bidirectional rectification circuit, an oscillation circuit, a coupling transmissioncircuit, a demodulation circuit and a triode which are connected in sequence. By adopting the linear isolator, isolation transmission of analog signals or digital signals is realized; positive and negative level signals can be received at the same time, the linear isolator is provided with four ports including an input port, an output port, a first grounding end and a second grounding end, the linear or nonlinear four-port optical coupler can be replaced in situ according to the ratio of 1: 1, the isolation function is achieved, and the linear isolator has the advantages of being small in chipsize, low in power consumption, good in performance and high in reliability.

This invention relates to one digital control stable power circuit structure without impacting, which adopts alternating and direct power exchange module input end connection of electricity, wherein, the output end is connected to direct power exchange module; the direct current power exchange module is connected to the anti-direction punching combination circuit; couple and relay control circuit connects main and prepare source sample circuit to isolate, trace circuit and adjust output voltage; the production spot needs direct current system for running to monitor the system isolation.

The invention discloses a movable foam abrasive jet fire-fighting cutting machine. The cutting machine comprises a fire-fighting cutting tool bit assembly, a high-pressure pipe, an abrasive mixing tank assembly, a supply pipeline, a mixing valve, a liquid A supply assembly, a liquid B supply assembly, a cutting machine power distribution cabinet, a booster pump, an explosion-proof motor, an unloading overflow valve, a safety valve, a pressure gauge, an energy accumulator, a coupling, a filter, a foam liquid assembly base frame, a liquid A pipeline, a liquid B pipeline, a heat exchanger, a pressure equalizer, a heat-sensitive controller, a hot-oil filter, a liquid inlet filter, a heat-sensitive circuit, a circulating pump, a frequency modulation motor, a three-way gate valve, an oil tank and a waterproof electric wire. The liquid A supply assembly and the liquid B supply assembly are used for pumping liquid A and liquid B into the mixing valve to form foam liquid, then the foam liquid is mixed with abrasive in the abrasive mixing tank assembly after passing through the booster pump, foam abrasive jet is formed, and then the foam abrasive jet is accelerated to a supersonic speed through a nozzle of the fire-fighting cutting tool assembly to impact a to-be-cut object, and fire-fighting foam is generated in the cutting process so as to realize fire-fighting cutting.

The invention discloses a multipath centralized monitoring meter which comprises a power supply unit, a GPRS (General Packet Radio Service) monitoring unit, an RS485 monitoring unit, an ESAM (Embedded Secure Access Module) monitoring unit and a carrier monitoring unit. Concentrated design for a circuit of a multipath collecting unit is adopted by the multipath centralized monitoring meter; input and output interfaces are unified; the switching and coordination of the concentrator in a power grid system and the signals, such as a TTL signal, a RS232 signal, a RS485 signal and the like of the meter, are realized; and the transmission for different signals is realized. A general chip in the market is taken as the chip of the multipath centralized monitoring meter and a male mould is taken as an outer shell, so that the cost is low; the concentration degree is high, so that a user is convenient to wire and mount; all interfaces are subjected to isolating treatment, so that the tested equipment is effectively protected and the use is safe; and the system is stable, the function is strong and the application scope is wide. The invention effectively solves the problems that different monitors are configured for different signals, the wire is complex, the potential safety hazards are more, and the like. An important firm basis is established for realizing a 'full-collecting, full-covering and full-fee-control' intelligent electric usage information collecting system for a power grid.

The invention relates to a face recognition ATM machine with isolation and alarm functions, which comprises a base, a main body, a top plate, two side plates and two isolation mechanisms; the main body is provided with a first camera, a display screen, an alarm mechanism, a card slot, a cash dispenser and a plurality of buttons; each the isolation mechanism comprises a first motor, a bearing, a first drive shaft, a moving block, a strut, a baffle, and a hinge assembly; the alarm mechanism comprises a first recess and two second recesses; the second recesses are provided with strip plates and closing plates; the first recess is provided with a translating assembly, a push plate, a telephone and two drive rods. The face recognition ATM machine with isolation and alarm functions enables a user to trade in a closed single-person security environment through the isolation mechanisms to protect the personal and property safety of the user, moreover, the two closing plates can be separated from each other by the alarm mechanism, so that the telephone is exposed, which is convenient for the user to perform an alarm and protect the safety of the user, thereby the practicability of the device is improved.

The invention relates to a double-redundancy hot backup actuator electromagnetic-lock locking, unlocking and monitoring circuit. The circuit comprises a DSP controller and an actuator electromagnetic-lock, and the unlocking, locking and monitoring circuit comprises two controlling circuits, two locking and unlocking circuits, two voltage monitoring circuits and two current monitoring circuits. Thetwo locking and unlocking circuits work in a double-redundancy hot backup mode, and when electromagnetic-lock unlocking fails in one locking and unlocking circuit, the other locking and unlocking circuit can independently realize the locking and unlocking of the electromagnetic-lock, and the reliability of unlocking and locking is thus improved; and the monitoring circuit can realize locking-unlocking state checking and circuit health state evaluation and then transmits state information and circuit health state evaluation to a remote main control station. The double-redundancy hot backup actuator electromagnetic-lock locking, unlocking and monitoring circuit has an isolation function, a second optical coupler, a fourth optical coupler and a third power supply module can achieve control and detection of a locking mechanism and effective isolation of the locking mechanism; and when the electromagnetic-lock breaks down, a load can be isolated from a power supply, and more serious consequences are thus avoided.

The invention discloses an insulation monitoring device and method for a new energy vehicle alternating current wiring harness. The device comprises an isolating power module, a first linear optocoupler, a second linear optocoupler, a first signal conditioning module, a second signal conditioning module, an AD conversion module and a DSP module. A positive pole of a light emitting diode of the first linear optocoupler is electrically connected with DC1 of the isolating power module. A collector of a phototriode of the first linear optocoupler is electrically connected with DC2 of the isolatingpower module. An emitter of the phototriode of the first linear optocoupler is electrically connected with the AD conversion module through utilization of the first signal conditioning module. The emitter of the phototriode of the first linear optocoupler is also grounded through utilization of a resistor R1. The AD conversion module is connected with the DSP module. The DSP module is electrically connected with the DC2 of the isolating power module. According to the device and the method, an insulation resistance value of the alternating current wiring harness for a vehicle body can be knownin real time, and a fault point can be positioned rapidly.

The invention provides a dual-band allocation combination apparatus for solving shortcomings in the prior art. The dual-band allocation combination apparatus comprises a metal cover plate and a metal box body, wherein an SMA connector is arranged on each of four walls of the metal box body separately; a microstrip plate is arranged in the metal box body 9; blocking capacitors, microwave diodes, conduction bands and resistors are arranged on the microstrip plate; the blocking capacitors, the microwave diodes, the conduction bands and the resistors are connected together through the conduction bands; and the microstrip plate and the SMA connectors are connected together through the conduction bands. The dual-band allocation combination apparatus has the advantages as follows: external-connecting ports of a microwave digital assembly are reduced and the usage amount of radio-frequency cables in radar or a communication system is reduced, thereby improving the reliability of the microwave digital assembly.

The invention discloses a double-layer-type isolating position garage which comprises a main vertical column. A plurality of isolating plates are arranged on the main vertical column; a parking frameslidably connected with the main vertical column is arranged in each isolating position, and a plurality of elevators are arranged on the main vertical column and connected with the parking frames; each parking frame comprises a top plate, a bottom plate and two side plates, and the height of the lowest position of each parking frame is larger than the height of the highest point of the corresponding isolating plate; base plates fixed to the ground are arranged in the isolating positions, and water pumps are arranged on the base plates; and on each isolating position, a water spraying hose communicating with the water outlet end of the corresponding water pump is arranged on each water pump, and a plurality of water drain openings communicating with a sewer are formed in the correspondingbase plate. The double-layer-type isolating position garage has the beneficial effects that the height space can be effectively utilized, the structure is reasonable, the garage is suitable for beingbuilt on the ground, can be used for parking a plurality of cars, is high in utilization rate and has an isolating function, cleaning in the independent space is achieved, and the other cars can be prevented from being affected.

The invention discloses a self-locking type enclosure desk. The self-locking type enclosure desk comprises a desk body, a rail device, a baffle, a locking device and a lock control mechanism; the rail device is installed on the side face of the desk body, a rail groove in the vertical direction is formed in the rail device, and the baffle is inserted into the rail groove in a liftable mode. The locking device comprises a one-way wheel, a support, a first sleeve and a first spring, the first sleeve is installed in the desk body, a first long groove in the vertical direction is formed in the side face of the desk body, the one-way wheel is installed at one end of the support, and the other end of the support is sleeved with the first spring and inserted into the first sleeve. The first spring extrudes the support and the one-way wheel so that the one-way wheel can penetrate through the first long groove to extrude a baffle in the rail device. The lock control mechanism is used for controlling the position of the one-way wheel. The liftable baffles are arranged around the desk body, and a user can lock the baffles at any height according to needs, so that the desk has an isolation function, and the desk can be conveniently applied to examinations and epidemic prevention isolated dining.

The invention relates to the technical field of medical disinfection, in particular to a movable disinfection and isolation device, which comprises a main assembly frame, a first lateral extension frame, a second lateral extension frame, an overhead liquid storage box for containing a disinfection solution, a bottom backflow box for recycling the disinfection solution and a small electric water pump. The movable disinfection and isolation device is composed of the main assembly frame and the lateral extension frames on the two sides, the main assembly frame and the lateral extension frames are fixedly assembled through the lateral supporting plates and the flexible isolation cover cloth, extension assembly is convenient, only bolt assembly and disassembly are needed, and operation is quite easy and convenient; the surface of a human body is disinfected and sterilized through multi-angle spraying, the disinfection area is greatly increased, and the disinfection effect is improved; the functionality is greatly enhanced, and the application range is wider; disinfection reflux liquid is pumped into the overhead liquid storage tank through the small electric water pump by utilizing the bottom reflux device, so that the resource recovery rate is increased, and waste is avoided.

The invention discloses a high-voltage pulse modular water treatment power supply and a control method thereof, the high-voltage pulse modular water treatment power supply comprises an A unit, first to 2N SM units, a transformer, first to 2N diodes, a first filter and a second filter, the A unit is an A unit of a half-bridge module or an A unit of a full-bridge module, and the SM units are half-bridge MMC modules; and the method further comprises an output voltage error calculation link, a transfer function operation link, a carrier link, a comparison link, a delay link and a driving signal generation link. Stress of a switching device can be reduced while a charging current peak value is suppressed, low-voltage direct-current input has an isolation function, and closed-loop control can be realized to generate bipolar high-voltage pulses only by using one voltage sensor.

The invention provides a low-voltage vacuum circuit breaker with electric isolation for a feed switch, which is used for solving a technical problems of inconvenience in maintenance, easiness in causing dangerous accidents and the like caused by separated installation or long distance between an isolation switch and a vacuum load switch in the conventional mining low-voltage power supply equipment. The explosion-proof vacuum circuit breaker comprises an explosion-proof shell, wherein an isolating switch and a vacuum circuit breaker body are arranged in the explosion-proof shell, the bottom ofthe vacuum circuit breaker body is fixed to a bottom plate of the explosion-proof shell, a connecting plate is arranged at the top of the vacuum circuit breaker body, an executing mechanism is installed on the connecting plate, and the isolating switch is fixed to one side of the connecting plate and connected with the executing mechanism; the actuating mechanism and the vacuum circuit breaker areboth connected with the control unit, and the isolating switch and the vacuum circuit breaker are respectively connected with a manual input unit. The system has an automatic control mode and a manual control mode, more convenient and safer maintenance of mining electricians is achieved, and meanwhile cost of mining underground low-voltage power distribution is reduced; the device is compact in overall structure, small in size, safe, reliable and convenient for line maintenance, and has an isolation function.

The invention discloses an isolating A / D-D / A converting circuit, and its character lies in that it comprises integrating circuit, double D flip-flop comparer, MCU, isolating transformer, shaping amplifying circuit, and second order low-pass filter; the measured voltage signal is connected to the same phase input end of the integrating circuit and the output end of the integrating circuit is connected with the clear end of the double D flip-flop, and the output end of the double D flip-flop is connected with the reverse phase input end and the capture input pin of the MCU, which composes the A / D converting circuit; the output end of the isolating transformer is connected with the shaping amplifying circuit and that of the shaping amplifying circuit is connected with RC low-pass filter and second-order low-pass filter, thus composing the D / A converting circuit. The beneficial effects of the invention: it can realize high performance, low cost, low power, and miniaturization, applied to data conversion, processing and transmission of various electronic measuring and control devices for temperature, pressure, flow, PLC, etc.

The invention discloses a pumping voltage detection and discharge circuit. The invention changes the conventional pumping voltage detection and discharge circuit and designs a novel pumping voltage detection and discharge circuit. The circuit can detect the power supply voltage stably and quickly and can filter out the unstable interference in the power supply. The pumping voltage detection and discharge circuit transmits a voltage signal to a single-chip microcomputer through an AD conversion chip and controls the single-chip microcomputer to output a PWM signal to control the interruption ofan MOS transistor, thereby quickly discharging the pumping voltage, and greatly enhancing the stability of the traditional pumping voltage detection and discharge circuit. The pumping voltage detection and discharge circuit disclosed by the invention comprises a single-chip microcomputer U4, a voltage sampling circuit, an optical coupler isolation circuit and a voltage discharge circuit. The circuit has the characteristics of high voltage sampling accuracy, long-time working stability, simple circuit structure, isolation function and simple circuit maintenance.

The present invention provides a cross-board isolation circuit. The cross-board isolation circuit includes: a first circuit, a second circuit, and a third circuit that are mutually independent in terms of hardware. The first circuit is provided with a first isolation unit. A second isolation unit is provided on the third circuit, and the first isolation unit is connected to the second isolation unit through the second circuit. The cross-board isolation circuit of the present invention improves the anti-interference ability of long-distance cross-board analog signal transmission, has the function of signal isolation between boards, and improves the reliability and stability of the system. The adoption of the LVDS interface in the present invention has a significant effect on improving the stability of digital signal transmission between boards and the anti-interference ability.

The invention discloses a high-frequency full-control switch variable turn ratio current and voltage self-control transformer. The transformer comprises a three-phase transformer body, a full-control switch device and a converter, wherein the full-control switch device and the converter are integrated. The three-phase transformer comprises a primary side primary winding, a secondary side series converter, a secondary winding and a secondary iron core. The three-phase transformer full-control switch can adjust the transformation ratio according to a control strategy, and the secondary side voltage is changed through magnetic field coupling, so that the purpose of regulating and controlling the load voltage is achieved; the secondary side series converter is a current control converter, participates in load side current adjustment, and can efficiently suppress harmonic current.

The invention discloses a soft infusion bag with the dual-chamber structure. The soft infusion bag with the dual-chamber structure comprises a soft bag body, wherein a puncture tube valve used for separating the soft bag body into two chambers is arranged in the soft bag body. The puncture tube valve comprises an outer tube, the periphery of the outer tube is connected to the inner wall of the soft bag body, a diaphragm used for separating the tube hole of the outer tube into two segments is arranged in the tube hole of the outer tube, and a puncture needle tubing which is in detachable clamping connection with the inner tube wall of the outer tube is arranged above the diaphragm. The soft infusion bag with the dual-chamber structure has the advantages that because the outer tube and the diaphragm are integrally formed in an injection molding manner, the diaphragm is a complete separation device for the two chambers, the outer tube and the soft bag body are tightly welded, a firm physical separator is formed, it can be effectively guaranteed that welding sealing is firm, no breaking or leakage will happen between the two chambers under pressing caused by large external force, and the real separation function is achieved; when the soft infusion bag with the dual-chamber structure is in use, the puncture needle tubing can easily pierce the diaphragm so that the two chambers can be communicated, and the soft infusion bag with the dual-chamber structure is easy and convenient to use and operate.

The invention relates to a chain-slat conveyer delayed start control circuit, belongs to the technical field of gangue discharge of coal mine underground roadway repair working faces, and solves the problem of potential risks of hurting people when a chain-slat conveyer of a mine is started and runs. A mining isolation phase-change switch, a three-phase vacuum alternating current contactor main contact and a surge protector are connected in series in sequence, and any two phases of the common portion of the mining isolation phase-change switch and the three-phase vacuum alternating current contactor main contact which are connected in series are connected with a primary side input port of a mining alternating current transformer; two paths of output on a secondary side of the mining alternating current transformer comprise a first transformer output port and a second transformer output port; and the first transformer output port is connected with an alarm circuit, a delayed start control circuit, a near control start-stop circuit and a remote control start-stop circuit, and the second transformer output port is connected with a fault detection protection circuit. The method comprises the steps of controlling start-stop and emergency stop of the chain-slat conveyer in a near control mode and a remote control mode; and warning nearby personnel to evacuate during starting, therebymaking up for the potential risks caused by instantaneous rotation of the chain-slat conveyer when the switch is started without warning.