44results about How to "Avoid sparking" patented technology

The invention discloses an anti-explosion scroll compressor, and relates to the technical field of scroll compressors, in particular to a scroll compressor with an anti-explosion function. An explosion-proof junction box assembly is arranged on a compressor body; a junction box of the explosion-proof junction box assembly is in circular projection welding connection with the compressor body; the left side and the lower side of the junction box are provided with cable gland mounting holes, and a cable gland A used for connecting a power cable and a cable gland B used for connecting a protector cable are assembled in the cable gland mounting holes respectively. The wiring T-shaped seat is arranged on the wiring post; a power supply cable penetrates through the cable gland A and then is connected to the wiring T-shaped seat through a bolt; the temperature protector penetrates through the cable gland B and then is placed in the junction box; and an isolation gasket is arranged on the junction box cover and is assembled and tightened with the junction box through an M5 bolt. According to the technical scheme, the problems that a conventional compressor junction box in the prior art is relatively simple in protection, poor in sealing performance, prone to sparking when making contact with metal impurities or liquid, flammable and explosive in a flammable gas environment and the like are solved.

The utility model relates to the technical field of terminals, in particular to a wiring terminal and a conductor wire. Comprising a metal nose, a current-limiting circuit board and a metal elastic sheet. The metal nose is used for being electrically connected with one end of a wire body of the conductor wire; the current limiting circuit board is used for limiting the magnitude of current and is electrically connected with one end of the wire body of the conductive wire; the metal elastic sheet and the metal nose are arranged at an interval in the first direction; the metal elastic sheet is electrically connected with the current limiting circuit board; when the metal nose is pressed, the metal elastic sheet can be in contact conduction with the metal nose, and the resistance value of the metal nose is smaller than that of the current limiting circuit board. According to the wiring terminal, the problem that electric sparks are generated in the wiring process can be solved, potential safety hazards are reduced, and safer and more reliable connection is achieved.

A high-sensitivity electronic spark protector provided by the utility model comprises an upper die plate, a lower die holder, positioning rods, a power-on switch and a contact sensor, the upper die plate is arranged right above the lower die holder, the positioning rods are arranged at the bottom of the upper die plate along the corners of the periphery, the lower die holder is provided with positioning holes corresponding to the positioning rods, and the power-on switch is arranged in the positioning holes. The contact sensor is installed in the positioning hole, the power-on switch is used for controlling power-on and power-off of the high-frequency machine, and the contact sensor and the power-on switch are electrically connected with the single-chip microcomputer. When the high-frequency machine performs mold closing, the upper mold plate moves downwards, the positioning rods enter the corresponding positioning holes and then make contact with the contact sensors in the positioning holes, at the moment, mold closing of the upper mold plate and the lower mold base is completed, the contact sensors send signals to the single-chip microcomputer, the single-chip microcomputer drives the power-on switch to be turned on, the high-frequency machine is powered on to generate a magnetic field, and then the high-frequency machine is started. Therefore, the problem that a high-frequency machine is powered on before the upper die and the lower die are not in contact, and electric sparks are generated is avoided.

The utility model relates to the technical field of communication, in particular to a charger. The charger comprises a charging module which is used for supplying power to the power receiving equipment under the condition that the charger is connected to the commercial power; the connecting circuit is connected between the plug of the charger and the charging module, and a thermistor NTC with a negative temperature coefficient is arranged in the connecting circuit; and the bypass module is used for bypassing the NTC when the charging module is in the working state. According to the charger provided by the invention, the NTC with a relatively large resistance value can be selected, and the NTC resistance value is relatively large when the plug is connected into the socket, so that the input impact current is inhibited, and the ignition problem is avoided. And when the charger enters a working state, the NTC with a relatively large resistance value is bypassed through the bypass module, so that the loss of the NTC is reduced, and meanwhile, the temperature rise of the NTC is reduced.

The invention relates to a radio frequency resonant cavity based on a short-circuit sliding block. The radio frequency resonant cavity comprises an input coaxial transmission line; the connector is connected with the input coaxial transmission line; the first output coaxial transmission line and the second output coaxial transmission line are connected with the connector. The first shifting mechanism is arranged on the first output coaxial transmission line, and the second shifting mechanism is arranged on the second output coaxial transmission line; each of the first output coaxial transmission line and the second output coaxial transmission line comprises an inner conductor, a short-circuit sliding block and an outer conductor, the outer conductor coaxially sleeves the inner conductor, a coaxial cavity is formed between the outer conductor and the inner conductor in a matching manner, and the short-circuit sliding block is connected with the first displacement mechanism and the second displacement mechanism; the short-circuit sliding block is movably arranged in the coaxial cavity. According to the ion cyclotron wave power transmission system, the effect of obtaining large voltage by means of small power is achieved, possible sparking points can be detected under the working condition of large voltage, then measures are taken in advance to prevent the sparking phenomenon, and stable operation of the ion cyclotron wave power transmission system is guaranteed.

The present invention relates to the technical field of power distribution cabinets, and specifically to a power distribution cabinet for a power distribution room with a fixed-point heat dissipation function. The power distribution cabinet comprises a cabinet body, a flow guide device, a pressure regulating device and a fan. The cabinet body is connected to the flow guide device, the pressure regulating device is connected to the cabinet body, and the pressure regulating device and the flow guide device are connected through pipelines. The pressure regulating device is used for internal circulation cooling of gas, and a power distribution space is provided through a power distribution cavity. The flow guide device is used for gas flow guidance, and automatically screens the incoming air delivered by the fan to prevent gas with excessive humidity from entering the power distribution cavity to cause sparking and short circuit. The heated gas is internally circulated and regulated by the pressure regulating device, and the internal circulation efficiency is improved by pressure regulation and temperature reduction. The internal circulation and air supply by an external fan are used to improve the cooling efficiency of electrical components in the power distribution cabinet to prevent overheating from affecting the power distribution quality.

The utility model relates to the technical field of battery management, and discloses an anti-sparking control circuit and a vehicle, the anti-sparking control circuit comprises a voltage lead-in end, a time delay module, a low-position switch control module and a high-position switch control module; the time delay module is used for charging an internal capacitor through voltage after the voltage leading-in end is externally connected with the voltage; the low-position switch control module is used for being switched on after the charging voltage of the time delay module reaches the starting voltage of the low-position switch control module, so that an internal low-position switch is switched on; the high-position switch control module is used for being connected with a battery management system and enabling an internal high-position switch to be switched on after the low-position switch is switched on so as to convert the level state of an output control signal, and the control signal is used for controlling a discharging switch tube in the battery management system to be switched on, so that ignition is prevented and the battery pack is controlled to discharge. The battery pack is controlled to supply power to the vehicle in a delayed mode, the sparking phenomenon is avoided, and the design thought is simpler, controllable and reliable.

The utility model discloses an anti-static dust removal filter bag which comprises a fixing sleeve and a filter bag body, the filter bag body is installed on the fixing sleeve, a dismounting mechanism is arranged on the fixing sleeve, the dismounting mechanism comprises an unfastening mechanism, a plurality of one-way pieces, a bottom disc, an unfolding pipe, a compensation pipe, a spring and a conductive mechanism, the plurality of one-way sheets are respectively mounted on the inner wall of the fixing sleeve at equal intervals, the unfastening mechanism is mounted on the fixing sleeve and the one-way sheets, the bottom disc is mounted on the filter bag body, and the one-way sheets automatically abut against and are clamped into grooves of the filter bag body under the action of the springs to complete fixation; during disassembly, the one-way piece can be driven to move and release the filter bag body only by pulling the elastic strip, the mechanism is simple to operate, time-saving and labor-saving, the replacement efficiency of the filter bag is greatly improved, the maintenance cost is reduced, meanwhile, the design of the bottom disc and the expansion pipe can play a role in supporting the filter bag and can adapt to the filter bag through the expansion and contraction of the compensation pipe, and the filter bag is convenient to disassemble. And the universality is enhanced.

The invention discloses a waveguide system for a medical linear accelerator, comprising: a first three-terminal circulator, a second three-terminal circulator, a forward wave sampling waveguide, a reverse wave sampling waveguide and a waveguide; the first three-terminal circulator is used to isolate the reflected wave from entering the waveguide to avoid sparking of the waveguide; the second three-terminal circulator is used to further isolate the magnetron from the waveguide system to ensure stable operation of the magnetron; the forward wave sampling waveguide is used to guide microwaves; the reverse wave sampling waveguide is used to guide microwaves; and the waveguide is used to guide microwaves. The waveguide system for a medical linear accelerator is isolated by two three-terminal circulators. The first three-terminal circulator close to the accelerating tube is used to isolate the reflected wave from entering the waveguide to avoid sparking of the waveguide; the second three-terminal circulator close to the magnetron further isolates the magnetron from the waveguide system to ensure stable operation of the magnetron.

An efficient PTC electric heater comprises a plurality of PTC heating ceramic chips, silica gel and heat dissipation strips, the PTC heating ceramic chips are bonded between the two heat dissipation strips through the silica gel, one end of each heat dissipation strip is provided with an electric connection structure used for being externally connected with a power source, and the efficient PTC electric heater has the advantages that the PTC heating ceramic chips are thin sheets, the thickness ranges from 1.5 mm to 2.15 mm, and on the premise that safety is guaranteed, the PTC heating ceramic chips are not prone to falling off, and the service life of the PTC heating ceramic chips is prolonged. The power density of the PTC heating ceramic chip is effectively improved; the width of the heat dissipation strips is narrower and ranges from 5mm to 8mm, and the temperature of the air outlet can be increased; due to the adoption of the thin PTC heating ceramic chip and the narrow heat dissipation strips, the power density of the whole PTC electric heater is high, and the temperature of an air outlet is effectively improved.

The invention provides a method and a device for preparing a coating on the inner wall of a pipe barrel based on bipolar magnetron sputtering, and the uniform and continuous coating on the inner wall of the pipe barrel is prepared on the inner wall of the deep pipe barrel by improving a magnetic field structure on the basis of existing magnetron sputtering equipment. Specifically, the device comprises a tube barrel and a tubular target arranged in the tube barrel, and the tube barrel and the tubular target are insulated. In the preparation process of the coating on the inner wall of the pipe barrel, the pipe barrel and the tubular target can be mutually positive and negative electrodes and can also be respectively connected with a direct-current power supply, a pulse power supply or a radio-frequency power supply according to the requirements of a coating process, and the tubular target must have the time when the potential is negative relative to the pipe barrel. At least two closed magnetic fields with magnetic induction lines distributed in an arch shape and penetrating through the target surface are constructed on the surface of the tubular target through a permanent magnet or an electromagnetic coil or a combination of the permanent magnet and the electromagnetic coil, at least one divergent magnetic field mainly perpendicular to the target surface component exists between two annular runways, and magnetic lines of the divergent magnetic field on the surface of the tubular target are dense. And the inner wall of the pipe barrel far away from the target surface is loosened. And part of high-energy electrons are guided to move towards the inner wall of the pipe barrel through magnetic induction lines, so that the density of ions reaching the inner wall of the pipe barrel is improved, and high-speed and high-quality preparation of the inner wall coating of the pipe barrel is realized.

The utility model discloses a clamping device for hoisting a burn-through device bus, which relates to the technical field of calcium carbide production and comprises a lower pressing plate, a lower insulating plate, an upper insulating plate and an upper pressing plate which are sequentially arranged from bottom to top and are fixedly connected together through bolts. Three threading holes are uniformly formed between the lower insulating plate and the upper insulating plate; a lifting lug is fixed in the middle of the upper surface of the upper pressing plate; the utility model has the advantages that the arc burner buses penetrate into the threading holes, and the lower insulating plate and the upper insulating plate are utilized to insulate and isolate the adjacent arc burner buses, so that even if the bolts are loosened, the two adjacent arc burner buses can be ensured not to be contacted, short circuit is avoided, and the sparking phenomenon is avoided.

This application provides a battery protection circuit, a battery pack, and a battery compartment. The battery protection circuit includes a switching sub-circuit, a first resistor, and a detection sub-circuit. The control terminal of the switching sub-circuit is connected to the presence detection terminal of the battery pack. The first terminal of the switching sub-circuit and the first terminal of the first resistor are respectively connected to the temperature detection resistor connection terminal of the battery management system in the battery pack. The second terminal of the switching sub-circuit and the second terminal of the first resistor are respectively connected to the first terminal of the detection sub-circuit. The switching sub-circuit switches between on and off based on the level signal of the presence detection terminal. This application can prevent arcing when the battery pack is connected to a load.

The utility model discloses a control circuit of an outdoor energy storage device and the outdoor energy storage device, the control circuit comprises a charge and discharge control unit, the charge and discharge control unit comprises a first connecting end and a second connecting end, the first connecting end is used for being electrically connected with electric equipment, and the second connecting end is used for being electrically connected with a storage battery. The parallel operation control module can control connection or disconnection between the third connecting end and the fourth connecting end, and the monitoring module is used for obtaining the voltage of the second connecting end to generate a first voltage value and obtaining the voltage of the fourth connecting end to generate a second voltage value. And the main control module is configured to compare the first voltage value and the second voltage value acquired by the monitoring module, and control at least one of the parallel operation control module and the charging and discharging control unit to work according to a comparison result. By detecting the potential difference between the storage batteries of the host and the slave and controlling the current flow direction in the parallel operation process, the process of gradually balancing the potential difference is realized, and the parallel operation safety and reliability of the system are improved.

The invention discloses a grid voltage control method suitable for an X-ray machine, the X-ray machine comprises a carbon nanotube, the carbon nanotube comprises an anode, a cathode and a grid, the anode is grounded, and the cathode is connected with a high-voltage circuit; the output of the high-voltage circuit is tube voltage; the gate voltage control method includes connecting a gate voltage control circuit with an output of the high voltage circuit such that a gate voltage floats above a tube voltage. According to the grid voltage control circuit, the grid power supply is connected to the high-voltage circuit of the cathode, so that the reference ground of the grid power supply is changed to the output voltage of the high-voltage circuit, no matter how the high-voltage output changes, the voltage difference between the grid and the cathode is always the output of the grid power supply, the voltage difference is small, the insulation is good, and sparking is avoided; the device is small in size, low in cost and high in grid voltage establishing speed, the carbon nano tube can be subjected to rapid pulse exposure, and the service life of the carbon nano tube is prolonged.

A steamer, oven and microwave oven all-in-one comprises a box body and a cooking cavity arranged in the box body, an air guide assembly is installed on the upper mounting plate above the cooking cavity, the air guide assembly comprises an air guide plate and a fan, a microwave generating device comprises a waveguide and a microwave stirrer, the waveguide is installed on the upper mounting plate and the front end thereof extends below the air guide plate, a avoidance cavity for avoiding the microwave stirrer is provided on the air guide plate, and the avoidance cavity and the air guide channel inside the air guide plate are not connected to each other. The steamer, oven and microwave oven all-in-one emits microwaves from the top of the cooking cavity, the avoidance cavity on the air guide plate can avoid the microwave stirrer on the top of the cooking cavity, so that the exhaust of the air guide plate is more uniform; a hot air blower baffle is installed on the rear side of the back plate of the cooking cavity, so that the matching position of the hot air blower baffle and the back plate is located outside the microwave energy field, so as to avoid the occurrence of sparking phenomenon, and water can flow inside the sealing ring between the heating plate and the bottom plate of the cooking cavity, so as to seal the steam and effectively prevent microwave leakage.

The utility model discloses a water bath contact vertical continuous electroplating device, which comprises an electroplating bath and a fixing frame arranged above the electroplating bath, a plurality of groups of anode assemblies which are transversely and sequentially arranged are arranged in the electroplating bath, and each anode assembly comprises a first electroplating anode and a second electroplating anode which are oppositely arranged; a first rectifying machine and a second rectifying machine are arranged on the fixing frame, a cathode hanging tool capable of translating transversely is arranged in the electroplating bath, a PCB to be electroplated is hung on the cathode hanging tool, a cathode conductive copper brush is arranged on the cathode hanging tool, a cathode conductive copper rail is arranged below the cathode conductive copper brush, and the cathode conductive copper rail is arranged below the cathode conductive copper brush. The cathode conductive copper rail is connected to the cathode of the first rectifier and the cathode of the second rectifier through cables, the cathode conductive copper brush makes contact with the cathode conductive copper rail, and the cathode conductive copper brush and the cathode conductive copper rail are both soaked in a preset water bath solution. According to the utility model, the safety and reliability of the PCB electroplating process can be improved.

The utility model discloses a startup and shutdown circuit which comprises a switch S1, a first voltage dividing unit, an energy storage unit, a first switch assembly, a second switch assembly, an MOS tube Q1, an MOS tube Q2, a second voltage dividing unit and a control chip MCU. The first switch assembly is provided with a first connecting end to a third connecting end, and the second switch assembly is provided with a fourth connecting end to a sixth connecting end; one end of the first voltage dividing unit is connected with a power supply VBAT + and a source electrode of the MOS tube Q1, the other end of the first voltage dividing unit is connected with the switch S1 and the energy storage unit, the other end of the switch S1 is grounded, the other end of the energy storage unit is connected with the first connecting end, a grid electrode of the MOS tube Q1 is electrically connected with the first voltage dividing unit, and the second connecting end is connected with a drain electrode of the MOS tube Q1, a source electrode of the MOS tube Q2 and the second voltage dividing unit. The third connecting end is connected with the fourth connecting end and the IO pin of the control chip MCU, the fifth connecting end is grounded, the sixth connecting end is connected with the other end of the second voltage dividing unit, the grid electrode of the MOS tube Q2 is connected with the second voltage dividing unit, and the drain electrode of the MOS tube Q2 is connected with the VCC pin of the control chip MCU.

The invention discloses a transition system suitable for communication of a special rail return-flow system and a running rail return-flow system in urban rail transit, a return-flow conversion area is arranged between the running rail return-flow system and the special rail return-flow system, and a train performs return-flow mode switching in the area; the two backflow systems are respectively provided with an independent traction power supply; positive buses of the two traction power supplies respectively supply power to the overhead line system, and the overhead line system is shared in the backflow exchange area to supply power to the train; the two backflow system traction power supply negative buses are electrically isolated, the special rail backflow equipment is connected with the special backflow rail, and the walking rail backflow equipment is connected with the walking rail; the special backflow rail is electrically isolated from the walking rail; a running rail transition area is arranged on the side, connected with the backflow conversion area, of the special rail backflow system, steel rails in the running rail transition area are installed in an insulating mode, and insulating knots are arranged at the two ends of the steel rails in the running rail transition area. The through grounding conductor is electrically isolated at the interface of the backflow transition area and the running rail transition area.

The utility model relates to adjustable speed filter automatic can sealing machine, including frame, the carousel of strip -shaped mouth of taking material of arc and the feed guide mechanism of arranging along carousel circumference, pre -press mechanism, edge sealing device (include press jar mechanism and sealing mechanism), discharge device etc. Sealing mechanism passes through double servo motor independent drive first / second transmission, and the speed difference of adjusting adapts different edge sealing demand, feed guide mechanism passes through adjustable connection mounting seat and integration detection element of strip -shaped hole, and pre -press / press jar mechanism fixes filter respectively through pre -press disc, press jar disc, and edge sealing subassembly is driven by cam (tension spring keeps contact), and discharge device takes the protection piece and prevents injury, and the material component (jacks, top material disc) auxiliary ejection. The equipment realizes efficient, stable, automatic can sealing operation, and promotes adaptability and product yield.

The utility model relates to the technical field of woven bags, and discloses a tear-resistant mining woven bag which comprises a bag body, and four handles are arranged on the upper portion of the outer side wall of the bag body. The middle layer material in the bag body is a base layer, the base layer is made of a polyethylene material, the outer layer of the base layer is provided with an anti-tear layer, the anti-tear layer is formed by crosswise weaving a first leather strip and a second leather strip, the outer layer of the anti-tear layer is provided with an antistatic coating, the inner layer of the base layer is provided with a thickening layer, the inner layer of the thickening layer is provided with an anti-scratch layer, and the anti-scratch layer is a plastic spraying film; static accumulation can be reduced through the anti-static coating, sparks caused by static electricity can be prevented, safety is improved, the anti-tear layer is formed by weaving the first leather strip and the second leather strip in a crossed mode, the anti-tear capacity is enhanced, the thickness of the bag body is increased through the thickening layer, the anti-scratch layer is a plastic spraying film, and the anti-scratch effect is good. And the bag body is effectively prevented from being punctured or torn by sharp articles in the loading and moving processes, so that the service life is prolonged.

The utility model provides a low power consumption anti-sparking power supply system and an electric vehicle, comprising: a main discharge loop connected with a battery and a load, the battery supplying power to the load when the main discharge loop is in a switch-on state; the pre-discharge circuit is connected with the main discharge loop, and when the main discharge loop is in a disconnected state, the pre-discharge circuit supplies power to the load; the interruption circuit is connected with the pre-amplification circuit and is used for sending out an interruption signal according to the current condition of the pre-amplification circuit; and the control circuit is connected with the interruption circuit, the battery management system is dormant when the battery leaves the vehicle, and the control circuit responds to the interruption signal to wake up the battery management system and control the main discharge loop to be switched on. According to the utility model, the anti-sparking function can be realized, and the battery management system can enter a dormancy state during the off-vehicle charging period of the battery, so that the power consumption is reduced.

This utility model belongs to the field of kitchen appliance technology, specifically referring to a microwave oven guide rail bracket mounting mechanism and a microwave oven. The microwave oven includes an inner cavity and a guide rail bracket mounting mechanism. The guide rail bracket mounting mechanism includes: a bracket fixing unit with several bracket fixing seats fixed to the side wall of the inner cavity, the bracket fixing seats being made of insulating material; a guide rail bracket installed between the bracket fixing seats; and several insulating sleeves installed on the guide rail bracket, wherein the guide rail bracket contacts the inner cavity through the insulating sleeves. The guide rail bracket of this utility model can be quickly installed and fixed through the bracket fixing seats; simultaneously, the several insulating sleeves installed on the guide rail bracket prevent the ends of the guide rail bracket from directly contacting the inner cavity and ensure a reasonable safety distance between them, preventing arcing due to insufficient distance or contact between the guide rail bracket and the side wall of the inner cavity, thereby improving the safety of the microwave oven.

The invention provides a charging circuit and a charging control method of cleaning equipment, the cleaning equipment comprises a host and a work station, the work station is provided with a charging unit and a first electrode slice unit which are connected, the host is provided with a power utilization unit and a second electrode slice unit which are connected, and after the first electrode slice unit and the second electrode slice unit are in butt joint, the charging unit is connected with the power utilization unit. The charging unit, the first electrode plate unit, the second electrode plate unit and the power utilization unit form a charging circuit of the cleaning equipment; wherein a charging circuit of the cleaning equipment is provided with a current suppression unit, and the current suppression unit is used for suppressing transient current during butt joint. The current suppression unit is arranged on the charging circuit of the cleaning equipment, so that the spark phenomenon caused by large current generated at the butt joint moment of the first electrode plate unit and the second electrode plate unit is effectively avoided, the phenomena of color change and poor contact of the electrode plates are avoided, and it is fully ensured that the cleaning equipment can normally execute charging operation.

The present invention relates to an inner pot structure of a steam-bake micro-in-one machine, comprising an inner pot barrel body and a back plate installed at the rear of the inner pot barrel body, characterized in that: a hot air blower baffle is installed on the rear side of the back plate, a hot air chamber is formed between the hot air blower baffle and the back plate, a through hole that can prevent microwaves from passing through is opened in the area of ​​the back plate corresponding to the hot air chamber, and a sealing ring is used to seal the periphery of the hot air blower baffle and the back plate. The advantages of the present invention are that: the inner pot structure of the steam-bake micro-in-one machine installs the hot air blower baffle on the rear side of the inner pot back plate, so that the matching position of the hot air blower baffle and the back plate is located outside the microwave energy field, thereby avoiding the occurrence of sparking. In addition, by forming an annular water flow channel arranged along the circumference of the sealing ring in the annular installation cavity between the periphery of the hot air blower baffle and the back plate, the sealing ring can be cooled by water cooling to ensure that the sealing ring can be used for a long time.

The present invention discloses a microsecond vacuum arc ion source energy spectrum analyzer device, including a metal shell, the top of the metal shell has a top opening, the bottom has a concave bottom fixed cylinder with an opening toward the top, and a circular ring is arranged at the opening of the concave bottom fixed cylinder; the inside of the metal shell is sequentially provided with an extraction electrode, a grid, a collector, and a plurality of insulating limit plates separating and fixing the extraction electrode, the grid, and the collector, and a cavity is formed between the plurality of insulating limit plates. This analyzer device adopts a nearly all-metal shell design, which can shield the influence of external electromagnetic fields to the maximum extent. For example, the pulsed high-voltage electric field generated by the discharge of the vacuum arc ion source may affect the diffusion of the plasma and the measurement of the ion flow, and this analyzer device can shield the external electromagnetic field as much as possible to obtain more accurate measurement results.

The utility model belongs to the field of coating equipment, and particularly relates to a magnetron sputtering cathode structure for vacuum coating, which comprises a flange plate, a cathode fixedly connected to the upper part of the flange plate, a first anode fixedly connected to the side part of the cathode, an insulating part fixedly connected to the side part of the first anode, and a second anode fixedly connected to the upper part of the insulating part, the second anode is arranged on the anode of the original magnetron sputtering cathode for vacuum coating or the periphery of a workpiece fixing device for placing a workpiece, and a positive potential which is greater than or equal to volt to the ground is applied on the second anode, so that the magnetron sputtering cathode for vacuum coating is ensured to stably discharge; and the discharge sparking phenomenon of the workpiece fixing structure for placing the workpiece is prevented, so that the magnetron sputtering cathode for vacuum coating performs stable discharge work.

The present application relates to a kind of brushless external electrostatic discharge ring electrostatic powder rotary cup spray gun device, including electrostatic powder spray gun body, non-metallic insulating rotary distributor assembly, electrostatic discharge ring, drive unit for driving rotary distributor assembly rotation, and for providing high-voltage static for electrostatic discharge ring high-voltage static generation unit.First, cancel the metal part design of rotary distributor assembly, substantially reduce the capacitance effect of metal part in rotary distributor assembly itself, eliminate the phenomenon of striking fire generated in the spraying process of traditional metal rotary distributor assembly, improve safety.Both can prevent carbon brush from mixing carbon residue into powder during rotation and friction process to pollute powder, and can also reduce the cost of frequent replacement and maintenance of carbon brush, so as to reduce the use cost of spray gun.

The application provides a distributed control system and method of an ion cyclotron wave source transmitter, which comprises a master control unit, a plurality of power supply interface units and a quick interlock protection unit independent of the master control unit. Each power supply interface unit adopts a unified hardware template, integrates a voltage / frequency conversion circuit, a frequency / voltage conversion circuit and an optical fiber transceiver to realize signal isolation transmission in a strong electromagnetic environment; the quick interlock protection unit comprises a hardware comparator network, a complex programmable logic device and a solid-state controller, the protection response time is not more than 20 microseconds, and hierarchical shutdown logic is configured to perform differentiated shutdown combination according to the fault type of a filament, a grid, an anode or a grid power supply. The application solves the problems of poor anti-interference, slow protection response, non-uniform interface and lack of hierarchical shutdown of the existing control system, and is suitable for a high-power radio frequency heating system of a nuclear fusion device.

The present application is about a conduction control method and device for a plasma rotating electrode device. It includes: collecting the actual current of each carbon brush circuit, when the actual current of any carbon brush circuit exceeds the preset current, it is determined that the actual current of the carbon brush circuit has an abnormal current condition; collecting the actual carbon brush pressure of each carbon brush, and judging whether the actual carbon brush pressure of each carbon brush is within the preset carbon brush pressure range; if the actual carbon brush pressure of at least one carbon brush is less than the lower limit of the preset carbon brush pressure range, and the actual carbon brush pressure of the carbon brush less than the lower limit of the preset carbon brush pressure range is recorded as the first actual carbon brush pressure, then it is determined that the first actual carbon brush pressure is not within the preset carbon brush pressure range; adjusting the first actual carbon brush pressure to within the preset carbon brush pressure range; judging whether the actual current of the carbon brush circuit with abnormal current condition has returned to normal according to the preset current. The present application can effectively control the current conduction of each carbon brush to prevent ignition and smoke.