302results about How to "Reduce solder joints" patented technology

The invention relates to a fiber Bragg grating strain sensor which comprises an elastic structure, an optical fiber grating, protective sleeves, sealing rings, fixed structures and sealing joints. The elastic structure comprises an elastic area with alternately spaced cavities, metal sheets and thread screws. The elastic area, the metal sheets and the thread screws are in an integral structure. The cavities forming the elastic area are vertical to the central axis of a cylinder, pass over the central axis of the cylinder and are distributed on the elastic structure in a staggered arrangement manner. Both ends of the elastic structure are in threaded connection with the fixed structures. The metal sheets are arranged in the fixed structures. The other ends of the fixed structures are in threaded connection with one ends of the sealing joints for fixing armored jackets. Both ends of the fiber Bragg grating passing through the central axis of the elastic structure are fixedly arranged on protruding metal sheets at both ends of the elastic structure by glass solder. The sealing rings arranged at the inner side of the thread screws of the fixed structures and the protective sleeves seal the elastic area. When the sensor is buried, the fixed structure is a flange structure. The fiber Bragg grating strain sensor provided by the invention has the advantages of large measuring range and simpleness in installation.

The invention discloses a closed-loop detection circuit of an interferential full optical-fiber current mutual inductor, which comprises a power supply circuit, an optical-source driving circuit, a signal processing circuit and a closed-loop detection circuit, wherein the closed-loop detection circuit aims at a ring-type optical-fiber optics interferential current mutual inductor and a reflecting interferential current mutual inductor and is based on FPGA. The gauge head of the optical-fiber current mutual inductor converts current intensity into optical-phase deviation. A front amplifier unit in a closed-loop detector receives an optical-intensity signal outputted by an optical-fiber detector, and after A/D conversion, the optical-intensity signal is outputted to the FPGA; the FPGA processes the received optical-intensity signal and decodes out a corresponding phase signal which generates a corresponding feedback-control signal by D/A, and the feedback-control signal is amplified by an operational amplifier and outputted to control a phase modulator; and an instant current value is obtained by internal operation, and converted into an analog voltage signal by a second path of D/A and outputted to a merging unit. The closed-loop detection circuit has the advantages of broad measuring frequency band, high measuring precision, wide dynamic range and the like, and is suitable for the electric transmitting and transforming trade and occasions of measuring heavy current.

The invention provides a double-frequency high-gain dielectric resonance array antenna. The antenna comprises a substrate, two microstrip feed networks and a dielectric resonant unit array composed of N dielectric resonant units, N >=1, the microstrip feed networks are arranged on the substrate, the N dielectric resonant units are arranged on the substrate in a coaxial or collinear arrangement manner, feed points of the dielectric resonant units are coupled to the output ends of the two microstrip feed networks, first feed slots are arranged in two side surfaces of each dielectric resonant unit, and a second feed slot is arranged in the bottom surface of each dielectric resonant unit. One microstrip feed network is provided with a group of coupling apertures close to the output end of a dielectric cube, the other microstrip feed network is provided with a group of coupling probes close to the output end of a dielectric cube, the coupling probes and the first feed slots form a coupling power, the coupling apertures are formed in the substrate and coupled with the second feed slots. The high-gain dielectric resonance array antenna is compact in structure, low in weight, low in loss, high in efficiency, low in cost, easy to assemble and suitable for batch production and includes fewer welding points, and can be used to provide effective or beneficial references for design and improvement of other broadband, multi-frequency, low-gain dielectric resonant units or array antennas.

The invention discloses a YIG harmonic oscillator, a YIG oscillator and manufacturing methods thereof; the YIG harmonic oscillator comprises a coupling ring and YIG monocrystals which are deployed in the coupling ring, wherein the coupling ring is a coupling ring which is deployed in a multi-layered ceramic substrate according to a preset coupling type through a low-temperature co-fired ferrite process; and the YIG monocrystals are inlaid in the coupling ring and sintered together with the coupling ring through an LTCC process. The YIG harmonic oscillator overcomes the defects of poor consistency, poor precision and the like in the manual winding of the coupling ring, and ensures the consistency and the precision of coupling ring manufacturing.

In order to enhance the reliability of an oil tank and achieve functions of tilting motion prevention, oil quantity measurement and diesel oil heating, the invention provides a diesel oil heating oil quantity sensor comprising a supporting seat and a plurality of data tubes of reed capsules. The data tubes are connected with the supporting seat and uniformly distributed along a height direction, and magnetic floats capable of moving up and down are sleeved outside the data tubes; the supporting seat is also connected with an oil tank oil feeding tube and an oil tank oil returning tube which are respectively communicated with a supporting seat oil discharging port and a supporting seat oil returning port through oil paths inside the supporting seat; the head part of the oil tank oil feeding tube is provided with a filtering net and a temperature sensor, and the oil tank oil feeding tube is internally provided with an electric heating body; an intelligent heating circuit control plate is directly arranged in a cavity of the supporting seat, a heating wire, the temperature sensor and the intelligent heating circuit control plate are connected with each other, wire connecting terminals are led out from the intelligent heating circuit plate, and signal terminals are led out form the data tubes; and the supporting seat is also provided with a tilting motion preventing breather valve.

The invention discloses a pump integrated optical device comprising a first two-core glass pin, a first collimating optical lens, a gain flatness filter assembly, a second collimating optical lens, and a second two-core glass pin which are arranged in the inside sealed glass tube from left to right, and a metal outside sealed tube which is arranged outside the inside sealed glass tube. An isolator chipware is placed at the front end or the tail end of the gain flatness filter assembly. The first collimating optical lens and the second collimating optical lens are provided with filter membranes which can transmit signal light and reflex pump light. The first two-core glass pin comprises a first optical fiber, a second optical fiber, a first two-core capillary tube and a first glass tube. The second two-core glass pin comprises a third optical fiber, a fourth optical fiber, a second two-core capillary tube and a second glass tube. The first optical fiber, the second optical fiber, the third optical fiber and the fourth optical fiber are optical fibers after being processing in a beam expanding mode. The pump integrated optical device integrates the multiple functions of a wavelength division multiplexer, an isolator and a gain flatness filter.

The invention belongs to the technical field of test equipment, and particularly provides a flat wire continuous wave winding, a stator and a motor. The invention aims to solve the problems of difficult production and easy damage caused by many welding spots of a flat wire motor in the prior art. The flat wire continuous wave winding comprises a wire inlet end, a wire outlet end and an S-shaped wave winding located between the wire inlet end and the wire outlet end. The number of winding layers of the flat wire continuous wave winding is 2N, and the pitch is y. A jump winding part is arrangedat the joint of the Nth layer and the (N + 1) th layer of the flat wire continuous wave winding. The pitch of each phase of wire group at the jump winding part is y + 1, wherein N and y are both natural numbers greater than or equal to 1. According to the flat wire continuous wave winding, a scheme of continuously winding a flat wire is adopted, so that welding spots are reduced.

The invention discloses an air-conditioning system. The reliability of the system is improved. The air-conditioning system comprises M outdoor units, N indoor units and a control system; the M outdoor units are used for supplying heat sources or cold sources, and the M is a positive integer; the N indoor units are used for receiving at least one heat source or cold source which is provided by one or more outdoor units, and the N is a positive integer; and the control system comprises a lubricating oil distribution subsystem, a refrigerant distribution subsystem and a control subsystem, the lubricating oil distribution subsystem is connected with the M outdoor units and comprises a gas-liquid separator and an oil separator which are connected with each other by a first connecting pipeline, the refrigerant distribution subsystem is connected with the M outdoor units, and the control subsystem is connected with the N indoor units, the M outdoor units, the lubricating oil distribution subsystem and the refrigerant distribution subsystem. The invention further discloses the control system and an air-conditioning control method.

The invention relates to the technical field of mobile communication equipment, and provides a low-profile radiating element and a base station antenna. The low-profile radiation element comprises a base and a plurality of direct radiation blocks, the base is provided with a plurality of support platforms in an extrusion mode towards the same direction, the plurality of direct radiation blocks arepressed and connected with the support platforms in a one-to-one correspondence mode, the lower surface of the base is provided with a micro-strip circuit in a laser etching mode, and the substrate is provided with a plurality of sliding buckles matched with a reflecting plate. Each direct radiation block comprises an injection molding body, and the two opposite sides of each injection molding body are respectively subjected to laser etching plating or full electric plating to form a direct surface and a radiation surface. According to the low-profile radiation element provided by the invention, the direct radiation blocks and the support platforms are pressed and connected with no need for welding operation; the sliding buckles are used to connect the base with the reflecting plate withno need for welding; the micro-strip circuit is subjected to laser etching at the lower surface of the base, the direct surface formed through laser etching plating or full electric plating improves the gain, a power division network is integrated, welding points are reduced to facilitate improvement of the manufacturing efficiency and reduction of the manufacturing cost.

The invention relates to the technical field of electronic cigarettes, in particular to a heating wire component in an electronic cigarette and a welding method of the heating wire component. The to-be-welded heating wire component in the method comprises electric leads and a heating wire which is wound on an oil suction rope. The method includes the following steps: step 1, removing outer skin of a connecting end of each electric lead to enable a core wire inside the corresponding electric lead to be exposed outside; step 2, electrically connecting one working electrode in a laser spot welder with the electric leads; step 3, enabling the core wire on the connecting end of each electric lead and a connecting end of the heating wire to be connected and to oppositely collide on another working electrode of the laser spot welder simultaneously, and enabling the laser spot welder to output current to integrally weld the core wire on the connecting end of each electric lead and the connecting end of the heating wire. After adopting the above scheme for welding, a welding point is enabled to be small and firm after welding, and faulty welding and false welding are avoided; resistance change is small, the welding point is free of heat energy conversion due to electrification and cannot be corroded by tobacco tar, and pure mouthfeel of smoke taste during smoking can be guaranteed.

An electric pencil sharpener comprises a casing (1) as well as a base (2), a motor (3), a tool rest (4) and a transmission assembly which are located in the casing (1), wherein the base (2) is connected with the casing (1), the motor (3) and the transmission assembly are connected onto the base (2), the tool rest (4) is rotationally connected with the casing (1), a pencil stopping block (5) is arranged in the tool rest (4), the tool rest (4) is connected with an output end of the transmission assembly, a micro-switch (6) is arranged in the casing (1) and is electrically connected with the motor (3), a link mechanism for controlling the micro-switch (6) is arranged on the base (2), one end of the link mechanism is attached to the micro-switch (6), and the other end of the link mechanism abuts against the pencil stopping block (5) and the output end of transmission assembly. Compared with the prior art, the electric pencil sharpener has the characteristics that a control mechanism is simple, fewer welding spots exist, the use stability is better, the electric pencil sharpener is easily and conveniently used, the assembling efficiency of workers can be substantially improved, and the cost is lower.

The invention relates the manufacturing method and special die of multiple-unit tube 90Deg steel skeleton. The method comprises the following steps: cutting the steel plate to roll bending 7; rolling the roll bending 7 into cylindrical shape, butt welding and making the tubular steel skeleton 2; putting it into female die 1, inserting the terrace die 3 into steel skeleton 2, pushing terrace die 3 by compression bar 6, terrace die 3 and charging plate 5 pressing the steel skeleton 2 into female die 1, then ejecting the terrace die 3 and steel skeleton 2; then welding the steel skeleton 2 to form 90Deg angle head steel skeleton; the female die and the bottom of female die being spherical surface. The productivity is high, spherical degree error is little, welding spot is little and strength is big.

The invention is suitable for an air conditioner and a refrigeration plant. The invention integrates the parts between an outlet of a condenser and an evaporator in a refrigeration system like a valve, a liquid storage tank, a safety valve, a filter, a visual liquid mirror, a solenoid pilot actuated valve and an expansion valve as a whole body. the invention has the advantages of reducing the welding points when a unit is assembled, reducing the techinics difficulty of on spot mounting and detecting, reducing the fault rate and reducing the detecting time for unit fault, thus leading the on spot maintenance and repairing work to be very simple and simultaneously the time for on spot operation is reduced greatly.

The invention relates to a straight-way solar energy heat exchange heat collector using solar energy as a heat source and belongs to the technical field of medium and high temperature solar energy utilization. The straight-way solar energy heat exchange heat collector comprises a straight-way transparent tube, a multi-curved face metal heat exchange tube, heat exchange tube end enclosures, a metal expansion joint, adsorbent storage rings, concave spacing sealing rings, metal snap rings, a working medium channel pipe, metal cover plates, sealing fixed plates, card type shield covers and vacuum connectors, wherein the two ends of the multi-curved face metal heat exchange tube are welded and fixed with the heat exchange tube end enclosures; the working medium channel pipe is connected with the heat exchange tube end enclosures; the multi-curved face metal heat exchange tube is provided with the metal expansion joint; the working medium channel pipe passes through the center of the metal cover plate to form an multi-curved face metal heat exchange tube component which is integrally sleeved in the straight-way transparent tube and the two ends of which are sequentially provided with the adsorbent storage rings, the concave spacing sealing rings and the metal snap rings; the sealing fixed plates seal and fix the metal snap rings and the metal cover plates; the two ends of the straight-way transparent tube are provided with the card type shield covers; and the vacuum connectors are fixed on the card type shield covers.

The invention discloses a preparation method for a solar battery of a solar mobile phone battery module, comprising the following steps: (1) after an epoxy resin plate is cleaned, adhesives, a glass fiber surfacing mat and a crystalline silicon battery are sequentially laminated on the epoxy resin plate; (2) an extraction electrode of the crystalline silicon battery is welded with a welding point at the bottom surface of the epoxy resin plate, and then a polyvinyl fluoride adhesive tape is pasted on the crystalline silicon battery, corresponding to the position of the extraction electrode; (3) the adhesives and tempering glass are laminated on the crystalline silicon battery; (4) the laminated battery modules are laminated, the temperature is 140-150 DEG C, the atmosphere pressure is 0.5-0.6, and the time is 10-20mins; (5) cooling formation is carried out, so as to obtain the solar battery of the solar mobile phone battery module. The solar battery which has high photoelectric conversion efficiency and good appearance is prepared, and the solar battery is assembled with the lithium battery and the shell, so as to obtain the solar mobile phone battery module.

The invention provides a phase shifting device. The phase shifting device comprises two phase shifters and at least one circuit combiner arranged between the two phase shifters, wherein the circuit combiner comprises an output end and two input ends; each phase shifter comprises at least one output end, one input end of the circuit combiner is connected with the output end of one of the two phaseshifters, and the other input end of the circuit combiner is connected with the output end of the other phase shifter; and each phase shifter comprises at least two U-shaped phase shifting circuits which are sequentially connected, and an output end of each of any two adjacent U-shaped phase shifting circuits is connected with an input end of the other U-shaped phase shifting circuit and the inputend of the circuit combiner, respectively. By utilizing relatively few cables and welding points, the phase shifting device has relatively small volume and relatively high integration level. Correspondingly, the invention further provides an antenna and a base station which adopt the phase shifting device.

The invention provides a liquid receiver. The liquid receiver is connected with a compressor and comprises a cylinder body, wherein an intake tube is arranged at the front end of the cylinder body and is provided with a first flange; an iron tube is arranged at the back end of the cylinder body, a centerless grinding iron tube is arranged at the tail end of the iron tube, and a second flange is sleeved outside a connection part of the iron tube and the centerless grinding iron tube and is connected with a compressor shell cylinder body; the centerless grinding iron tube is connected with an air cylinder hole of the compressor through interference fit; the flanges, the cylinder body and the iron tubes are made of an iron material, and the intake tube is made of a copper material; a filter screen and locating bumps are also arranged in the cylinder body, and the locating bumps fix the filter screen on the cylinder body by utilizing a rolling process; the iron tube is provided with locating points for helping the iron tube and the cylinder body to be located in a welding process.

The invention discloses a wind wheel and an air blower applying the wind wheel. The wind wheel comprises a top panel provided with a plurality of wind blades and a bottom panel. The multiple wind blades protrude out of the lower end face of the top panel, and the multiple wind blades and the top panel are integrally formed through injection molding. The multiple wind blades are located between thetop panel and the bottom panel. An air inlet is formed in the middle of the bottom panel. An air flue is formed between every two adjacent wind blades. A connecting base connected with a motor shaftis arranged in the center of the top panel. A plurality of positioning columns protrude out of the end faces, connected with the bottom panel, of the wind blades. The bottom panel is provided with installing holes for the positioning columns to penetrate, and the wind blades and the bottom panel are fixed together through welding. The end faces of the wind blades are further provided with a plurality of first bosses. The bottom panel is provided with grooves matched with the first bosses. The first bosses are embedded in the grooves, the first bosses and the grooves are combined together through welding, welding points are reduced, and the problem about solder skips is reduced; and the welding precision is improved, welding is firm, and the problems that during wind wheel running, jumpingis great, and balance performance is poor are effectively solved.