99results about How to "No spark" patented technology

The invention relates to a glass fiber reinforced plastic lighting fixture shell, belonging to the technical field of outdoor lighting fixture processing. According to the processing technology disclosed by the invention, organic glass fiber reinforced plastic substitutes for aluminium, aluminium alloy or magnesium alloy material, wherein the organic glass fiber reinforced plastic comprises the following raw material components: unsaturated polyester resin, polyester gel coat resin, roving checked cloth, a chopped fiber felt, a surface mat, a curing agent, an accelerating agent, a demoulding agent and a thin film. The processing technology of the glass fiber reinforced plastic lighting fixture shell comprises the following steps of: automatically inspecting a construction site, carrying out pre-treatment on a mould, selecting a reinforcing material, cutting the reinforcing material, selecting a polyester resin glue solution, preparing the polyester resin glue solution, carrying out gel coat construction, pasting, solidifying, and carrying out product inspection, thus the glass fiber reinforced plastic lighting fixture shell is obtained. The glass fiber reinforced plastic lighting fixture shell product disclosed by the invention has the advantages of corrosion resistance, flame retardance, light weight, high strength, ageing resistance, strong designability, safety, skid resistance, excellent electrical property, no magnetic property and safety in use in anti-electromagnetic anti-knock environment.

The invention discloses a coupling refractive index meter for an evanescent field among optical fibers and a detecting method of the coupling refractive index meter. The coupling refractive index meter comprises a light source, an optical fiber sensor probe, an optical fiber coupler/circulator, a first photoelectric detector, a second photoelectric detector and a data collecting and processing module, wherein the optical fiber sensor probe comprises an optical fiber engraved with inclined optical fiber gratings and a D-type optical fiber which are parallelly arranged and tightly closed; the light source is connected with one end of the optical fiber engraved with the inclined optical fiber gratings through the optical fiber coupler/circulator; the optical fiber engraved with the inclined optical fiber gratings is connected with the input end of the second photoelectric detector through the optical fiber coupler/circulator; one end of the D-type optical fiber is connected with the input end of the first photoelectric detector through a single mode optical fiber; one end, connected with the optical fiber coupler/circulator, of the optical fiber engraved with the inclined optical fiber gratings and one end, connected with the first photoelectric detector, of the D-type optical fiber are on the same side; the first photoelectric detector and the second photoelectric detector are separately connected with the data collecting and processing module. The coupling refractive index meter has the advantage of being higher in refractive index measuring accuracy.

The invention relates to a motor car wheel tread sweeper shape-repair grinding device and a preparation method thereof. The preparation method comprises: preparing the following raw materials by weight: 10-35% of a binder, 5-15% of nitrile butadiene rubber, 10-20% of carbon fiber, 5-10% of aramid fiber, 15-35% of a shape-repair aid, and 0-10% of graphite; adding the raw materials to a high speed plow harrow type material mixer in steps according to a certain ratio, mixing for 5-10 min, carrying out a reaction for 200-500 s in a molding mold at a temperature of room temperature to 150 DEG C under a pressure of 200-600 kg/cm<2>, and carrying out high temperature sintering on the molded grinding device for 5-20 h at a sintering temperature of 100-140 DEG C so as to obtain the motor car wheel tread sweeper shape-repair grinding device. Compared to the grinding device in the prior art, the grinding device of the present invention is used in the Changke standard multiple units, can significantly repair the wheel surface defects and the non-roundness, has characteristics of no undesirable phenomena such as cracks, hot spots, sparks, metal embedding, layering, shedding and the like, no damage to the dual, and good effect.

The invention relates to a thyristor phase switch testing device, the comprehensive microprocessor and thyristor technique are used in the device; the projection angle of switch is operated by the drive pulse phase of the thyristor. The device includes: host CPU, acquisition circuit of input-output signal, switch power supply, input-output interface, touching screen communication, upper machine communication, CPLD signal processing circuit, thyristor trigger circuit, power return circuit and thyristor; the electrical signal transitive relation is: the thyristor trigger circuit triggers the thyristor, the signal is transmitted to the acquisition circuit, processed by the host CPU, and separately transmitted to the touching screen communication, the upper machine communication and the input-output interface, the CPLD signal processing circuit and switch power supply provide power for the host CPU, thyristor and power return circuit, and the signal is output.

The invention discloses a polarization-maintaining fiber grating two-dimensional vector vibration sensor. The sensor comprises a broadband light source, a polarization control unit, a sensing probe and an orthogonal polarization demodulation unit, wherein the polarization control unit comprises a polarizer and a polarization controller, the sensing probe comprises an optical fiber probe, the optical fiber probe comprises a polarization-maintaining fiber grating and a cladding-fiber core energy re-coupling structure and is used for sensing the environment vibration information, the optical fiber probe is written in polarization-maintaining fiber, the cladding-fiber core energy re-coupling structure is welded through a polarization-maintaining/single-mode fiber core axial aligning mode, the orthogonal polarization demodulation unit comprises a filter, a polarization beam splitter, two photoelectric detectors and an orthogonal polarization vector synthesizer, and the polarization control unit, the sensing probe and the orthogonal polarization demodulation unit are connected through an optical fiber circulator or a coupler. By the aid of the mechanism, the two-dimensional vibration direction identification based on the single-optical fiber grating can be achieved. The mechanism has the advantages of being high in flexibility, compact in structure, low in cost and easy for network deployment.

The invention discloses a water jet technology based anchor rope self-drilling and rapid anchoring construction method. The method comprises the following steps that an angle adjustable type drillingmechanism is adjusted so that a hollow anchor rope can face a preset drilling direction; a water jet generation device is connected with the rear end of the hollow anchor rope; the water jet generation device and the angle adjustable type drilling mechanism are started to do drilling work; after drilling work is completed, a rigid pipe is coaxially connected to the rear end of the hollow anchor rope, and the rigid pipe is mounted on the angle adjustable type drilling mechanism; a discharging opening of an anchoring agent feeding device is connected with the rear end of the rigid pipe; and theanchoring agent feeding device and the angle adjustable type drilling mechanism are started to do anchoring work on the hollow anchor rope in a drilled hole. In the drilling process, no heat is generated, no spark is generated, no dust is generated, safety is achieved, and noise is low; and meanwhile, the procedures of drilling rod drilling and rod retreating are omitted, operation is simple, andautomatic control can be achieved easily. An anchoring agent is blown in from a hole in the hollow anchor rope, and the problem that cartridge anchoring agents are hard to feed does not exist.

The invention discloses an annular safety electric energy coupling middle end. The annular safety electric energy coupling middle end structurally comprises a JK alternating current receiving control port, a control connecting port, another control connecting port, an L1 annular magnetizer, an L2 annular magnetizer, an L1 input primary coil, an L2 output secondary coil, an L2 secondary output voltage port, an L2 secondary output public port, a D electric appliance, a DC storage battery, an alternating-current input device, an alternating-current output device, an S rectifying module, a K switch, a J control signal, an L1 isolator, an L2 isolator and an L2 secondary output alternating-current high-voltage port. According to the annular safety electric energy coupling middle end, no rope or connecting piece exists between a power supply side and a power consuming side, in this way, contact points, sparks, electromagnetic interference, elastic tension, screw fasteners, friction and contact heating are avoided, the middle end is waterproof, and using is safe and reliable.

The invention provides an intelligent emergency lamp for nuclear environment. The intelligent emergency lamp comprises a casing, a liner assembly, a lamp holder, an indicator lamp light passing assembly, a handle, a support plate, a wire inlet mouth, a wire outlet mouth and a circuit device, wherein the liner assembly mainly includes a liner, a rubber sealing strip, a storage battery protection cover, and a circuit board protection cover; the casing and the liner form a double-layer protection structure; the lamp holder and the handle are fixedly mounted on the support plate; the indicator lamp light passing assembly and the wire inlet mouth are mounted on the casing and the liner; and the circuit device is mounted in the liner. The circuit device includes an illuminating lamp, an on-off power supply, a storage battery, an alarm, a test button, an indicator lamp and a circuit board, wherein the an intelligent control circuit is arranged on the circuit board; and the circuit device can provide continuous emergency lighting for 8 hours or more through the illuminating lamp when the normal lighting is interrupted. The intelligent emergency lamp provided by the invention is resistant to impact, voltage, radiation, shake, moisture, and corrosion, has high on-off switching speed, and is convenient in detection and test by using a combined test button.

The invention provides a preparation method for an aluminum brazing organic flux. An alumina film can be damaged at the temperature of 180 DEG C-275 DEG C, deformation is small after the alumina film is welded, stabilizing and shaping is achieved, corrosion is avoided, corrosion to aluminum and aluminum alloy is very small, the welding temperature is far from the melting point of an aluminum material, the welding process is reliable, and the brazing qualified rate is greater than 98%. According to the technical scheme, 70 wt%-90 wt% of triethanolamine, 1 wt%-5 wt% of zinc tetrafluoroborate hydrate, 5 wt%-10 wt% of cadmium fluoroborate, and 5 wt%-10 wt% of ammonium fluoroborate are added; the zinc tetrafluoroborate hydrate, the cadmium fluoroborate and the ammonium fluoroborate are weighed at the room temperature and put into a mortar to be ground into fine powder, and grinding and mixing are uniform; the uniformly ground and mixed drug is poured into the weighed triethanolamine, and after being stirred uniformly, the drug is placed for a certain period of time. The welding problems of the aluminum, the aluminum alloy, aluminum bronze and aluminum brass at the temperature of 180 DEG C-275 DEG C are solved through the preparation method.

The invention relates to a stepless speed regulation device for controlling a direct-current motor for the aviation industry. A given integrator, a speed regulator, a current regulator, a trigger pulse generator and a silicon controlled rectifier are connected sequentially. The input end of a current regenerative feedback circuit is connected with the output end of the silicon controlled rectifier, and the output end is connected with the input end of the current regulator. A speed measurement feedback circuit for measuring the rotation speed of the motor is connected with the input end of the speed regulator. The device has the advantages that good starting, breaking, rotation and counter rotation and speed regulation performances are provided; large-range stepless speed regulation can be performed on the motor by changing the input voltage or exciting current of the motor simply, and accordingly, the motor rotation speed is stable, and arcs and electric sparks are avoided; the device is simple in structure, convenient to operate, small in own consumed power, low in operation cost and capable of being used in various complex environments.

The invention discloses an all-optical fluid mass-flow monitoring device and method. The device comprises a heating light source, a detecting light source, a first filter wavelength division multiplexer, a sensing unit and a spectral analytic apparatus. The sensing unit is in a composite structure of a single mode fiber, a photo-thermal fiber and a single-mode fiber; both the single mode fibers are provided with fiber gratings by carving, forming a Fabry-Perot cavity; the photo-thermal fiber forms a resonator. The method includes the steps: after the photo-thermal fiber of the sensing unit absorbs light emitted by the heating light source, the temperature rises and stabilizes after rising to a preset value; fluid to be detected flows by the sensing unit and brings away heat, and effective cavity length of the Fabry-Perot cavity changes, resulting in drift of interference peaks; drift distances of the interference peaks are detected, and current mass-flow of the fluid is obtained by data calibration. The all-optical fluid mass-flow monitoring device and method has such advantages as accurateness, sensitiveness, all-optical property, small size and safeness and is especially applicable to monitoring of flammable explosive fluids.

A miniature linear vibrator consists of a coil, a hill-shaped iron core, magnet steel, a vibration body, a jettison device and a quadrate housing. The hill-shaped iron core is arranged on the bottom in the housing, the coil is wound on the central shaft thereof, the two ends of the coil are led out through a lead, the vibration body and two pieces of magnet steel embedded in vibration body are arranged over the hill-shaped iron core, the magnet steel is just opposite to two hill-shaped recesses on the hill-shaped iron core, the vibration body is connected with the housing through the jettison device, and the magnetic poles of two pieces of magnet steel faces toward heteropole. The miniature linear vibrator has the advantages of simple structure, light weight, low manufacturing cost, long service life, and no spark and electromagnetic interference.

The invention relates to a grinding method with the application of the grinding wheel muller in the valve; wherein, the grinding wheel muller comprises a pneumatic motor, a drive rod, a grinding wheel plate, and a plurality of grinding wheel heads. The compressed air drives the pneumatic motor connected with the drive rod through the joint shaft; a driving bevel gear and a driven bevel gear arranged on the lower end of the drive rod are meshed with each other; the universal joint is connected with the grinding wheel on the external part of the body; the grinding wheel heads are arranged at both ends of the grinding wheel. The grinding method applied in the valve can be normally used in the condition of steam, water and wet, and cold grinding is not needed in the high temperature of 400 to 500 DEG C; online grinding can be used when the large valve leaks; grinding wheel heads and transmission regulate rods matched with the sealing surface can be assembled on valves with different specification, and repairing can be used when valve sealing surface leaks. The invention has the advantages of fast grinding, lower material cost, high grinding precision, simple operation, safety and reliability, low failure rate, long time continuous operation under any bad environment, and application for grinding on various valves.

The invention discloses a VR virtual welding simulation practical training system and practical training method, and can solve the technical steps that a traditional welding training process generatessmog and sparks, and is serious in pollution, high in training cost and poor in safety. The system comprises a control cabinet, a VR head-mounted display and a welding gun, wherein the control cabinet comprises a touch screen and a host; the VR head-mounted display is connected with the host; the welding gun is provided with a laser position tracer; the laser position tracer is in communication connection with the host. The system also comprises a collection module, wherein the welding gun, the collection module and the host are connected in sequence; the collection module comprises a collection circuit and a single chip microcomputer; the collection circuit comprises a photoelectric coupler OPT300, an eight-bit tristate homodromous output bus buffer 74HC541D chip, a resistor R300, a resistor R301, a resistor R302, an indicator light LED300 and a filter capacitor CA300. The practical training system can accurately measure various kinds of operating information, help students convert welding skills into practical welding work, and can be cyclically used, so that the practical training system saves a lot of human and material costs and is safe and reliable.

The invention discloses a Hall encoder-based travel sensor. The travel sensor comprises a metal tube made of nonmagnetic metal materials. A magnet ring that matches with the outer diameter of the metal tube is arranged on the metal tube in a sleeved mode. Multiple Hall circuit arrays are arranged inside the metal tube and connected with the main SCM (single-chip microcomputer) by means of each sub-SCM. The output terminal of the main SCM is connected with an operational magnification circuit which is connected with an outer lead wire. In addition, the invention also discloses a method which utilizes the Hall encoder-based travel sensor to measure the travel distance. The invention has the advantages of good security, high reliability and high resolution ratio, and low power consumption., the resolution ratio achieved by the invention is as high as 3 mm, much better than the prior reed switch, thereby largely improving the position resolution ratio. Taking the travel of 192 mm as an example, the overall consumption is less than or equal to 7mA. Moreover, the invention is intelligent so as to be capable of automatic correcting and dual-directional transmission of signals, which facilitates the intelligent management in the detection field.

The invention provides environment-friendly and energy-saving equipment with a purification device and a purification method. Almost electromechanical equipment, which is used at present, is not provided with a purification device of an oil mist separation system; particles with the size of 0.3 microns to 3.5 microns in oil mist in the electromechanical equipment are harmful to the health of human bodies when being inhaled by people; and the oil mist is deposited in a working region and accidents including occupational injuries and the like are easy to cause. The environment-friendly and energy-saving equipment comprises a base (1), wherein a groove is formed in the base; a motor (7) is mounted at the middle part in the groove; two tertiary filtering devices (6) are arranged on the side faces of the motor respectively; the front end of the motor is connected with a centrifugal impeller (9) through a connection shaft; a secondary filtering device (10) is arranged at the front end of the centrifugal impeller; a primary filtering device (11) is arranged at the front end of the secondary filtering device; and an oil mist suction inlet (2) is mounted on the front end face of the base. The environment-friendly and energy-saving equipment with the purification device is provided by the invention.

The invention discloses an intelligent energy-saving management system. The system comprises a control center, the control center is connected with multiple relay nodes through a network coordinator and a node manager; each relay node is corresponding to one room; a sensing module and an intelligent control module are arranged in each room; the sensing module receives a signal from the corresponding relay node through a network or data line way, and performs the setting, and the sensing module converts the acquired information in the room into a signal to send to the intelligent control module. By controlling working states of an intelligent socket and the connected electric equipment under a state that the people is existent or inexistent, the relay is used for issuing a power on/power off strategy under the intelligent socket, the automatically managed equipment is in standby and power outage, thereby realizing the drop energy-saving and add up low-carbon and environmentally-friendlyconcept, the energy consumption of the comprehensive building can be reduced, and the operation cost of the comprehensive building is saved, the service life of the electric equipment can be prolonged, thereby realizing the maximum of the economic benefit.

The invention discloses a wireless charging trolley system, which includes a transmitting module, a receiving module and a monitoring control module. The transmitting module and the receiving module are connected with the monitoring control module. The transmitting module includes a power supply module, a driving circuit module, an inverter module and a transmitting coil. The power supply module is connected with the driving circuit module. The driving circuit module is connected with the inverter module. The inverter module is also connected with the transmitting coil, and is used for generating high-frequency alternating current in the transmitting coil. The receiving module includes a receiving coil and a rectifier and filter module. The receiving coil is connected with the transmittingcoil. The rectifier and filter module is connected with the receiving coil, and is used for charging a rechargeable battery after rectifying and filtering the data of the receiving coil. By chargingthe trolley through the wireless charging technology, the problem that there is a need to move the charging equipment and the power lead is too long in wired charging is avoided, and the problem thatthe common floor area of the charging station and the charging equipment is too large in wired charging is solved.