60results about How to "Avoid short circuit and other problems" patented technology

The invention discloses a method for checking consistency of a schematic diagram and PCB production data. The method comprises steps as follows: making a standard template of a PCB design software schematic diagram netlist file; making a standard template of an ODB++processing data netlist file; extracting a PCB design software schematic diagram netlist, and extracting a processing data netlist; analyzing the netlists, and storing connecting relation description information, device type information, abidance device information, connection node number, connection nodes and a terminator protocol in a list manner; comparing theschematic diagram netlist file with the processing data netlist file according to a defined data storage protocol; generating a report file according to a comparison result. According to the method, the problems of network loss, short circuit and the like caused by negligence, software bug and the like in a PCB design process are solved, time cost consumed by a designer for connecting relation correction is saved, and the method is better than a currently utilized IPC (inter-process communication) netlist comparison method in the aspects of accuracy and efficiency.

The invention provides a solid oxide fuel cell stack which comprises an upper current collector, a lower current collector and a stacked structure accommodated between the upper current collector and the lower current collector, wherein the stacked structure comprises at least two connecting parts and a cell piece arranged between the two adjacent connecting parts, each connecting part comprises the anode side and the cathode side, an oxidizing gas sealing part is arranged on the anode side of each connecting part, and a fuel gas sealing part is arranged on the cathode side of each connecting part; and a closed oxidizing gas inlet channel, a closed fuel gas inlet channel, a closed fuel gas outlet channel and an open oxidizing gas outlet channel are arranged on the stacked structure. Compared with the prior art, as an oxidizing gas outlet is open, the internal gas pressure difference at the cathode sides of the connecting parts is smaller, the flow is more smooth, the problem of mutual gas moving between fuel gas and oxidizing gas can be effectively solved, the sealing reliability of the stack can be improved, and the finished product rate of the stack and the performance operation stability can be further improved.

The invention provides a steam exhausting system and a steam cooking device. The steam cooking device comprises an outer shell and a cooking chamber arranged in the outer shell, wherein steam exhaust ports are formedina chamber wall of the cooking chamber. The steam exhausting system comprises a steam exhausting box, wherein the steam exhausting box is fixedly mounted on an outer wall of the cooking chamber and is in sealing connection with the chamber wall of the cooking chamber; a through hole is formedinthe outer shell; the steam exhausting box locally penetrates through the through hole and extends out of the outer shell; a steam channel is arranged in the steam exhausting box; a steam inlet of the steam channel is communicated with the steam exhaust ports; and a steam outlet of the steam channel is located on the part of the steam exhausting box extending out of the outer shell. The steam exhausting system provided by the invention has the advantages that the structure is simple, the cost is low, the mounting is convenient, the production efficiency of the steam cooking device product is promoted and the production cost of the product is lowered. Besides, according to the invention, the steam outlet is formed on the part of the steam exhausting box extending out of the outer shell, so that the user can easily scrub the steam outlet part and the problem of difficulty in cleaning and even incapability of cleaning the steam outlet of the present steam cooking device product can be solved.

The invention discloses a semiconductor element and a manufacturing method of the semiconductor element. The manufacturing method comprises the steps that a substrate is firstly provided, at least one first transistor is formed on the substrate, a first conduction type is included, and the first transistor comprises a first metal grid and a protection layer covering the side wall of the first metal grid; then, part of the first metal grid is removed to form a first groove to expose part of the protection layer, and a second groove is formed by removing the exposed part of the protection layer after the first groove is formed to form. After the second groove is formed, an contact etch stop layer is formed in the second groove.

The invention relates to a terminal post sealing cover, an upper cover assembly and a compressor. The terminal post sealing cover comprises a top cover and a side wall extending from the top cover toone end; The side wall comprises a accommodating part for accommodating a connection terminal and a terminal post, and a fixing part for sleeving the outer periphery of the terminal post fixing base and interfering and fixing with the outer periphery of the terminal post fixing base; The accommodating part is provided with a fixing structure for inserting and fixing the connection terminal; The fixing structure is provided with a through hole used for the terminal post to penetrate and enabling the penetrating terminal post to contact and connect with the connection terminal. The fixing part and the terminal post fixing base are interference-fixed so that the installation of the terminal post sealing cover and the terminal post fixing base is facilitated, the sealing between the terminal post sealing cover and the terminal post fixing base is realized, materials are saved, costs are saved and the production efficiency is improved. Besides, the terminal post is enabled to pass through the through hole and contact and connect with the connection terminal in the fixing structure, thus facilitating the rapid connection between the connection terminal and the terminal post and further improving the production efficiency.

The invention discloses a lithium battery module, comprising: a module shell, a positive electrode column, a negative electrode column, a monomer shell, a battery monomer, a bus bar assembly, an automatic fire extinguishing device and an automatic cooling device, wherein, the root of the positive electrode column or the negative electrode column is provided with a flexible fuse electrode; The single housing is provided with a plurality of, and laminated on the inside of the module housing; The monomer shell is composed of non-conductive insulating material. The battery cell is fixedly installed inside the battery cell; The automatic fire extinguishing device is arranged inside the single shell; The automatic cooling device is arranged at the bottom end of the module housing. The lithium battery module provided by the invention is provided with a power-off protection device, which can automatically cut off the power supply connection when a short circuit occurs inside or outside the battery; An automatic fire extinguishing device is arranged, and the fire extinguishing device is automatically turned on when a fire occurs, so that the disaster situation can be effectively controlled;It is equipped with automatic cooling device to control the temperature of the battery module in the proper range, and the safety factor is very high.

The invention discloses an intelligent electrical equipment control method and relates to the field of intelligent control. The method comprises steps: a user terminal sends a user control request used for controlling the electrical equipment to an intelligent control gateway; the intelligent control gateway determines the controlled electrical equipment and the control mode specified by the user control request through analyzing the user control request; the controlled electrical equipment is directly controlled according to the user control request if the control mode is the direct control mode; and the controlled electrical equipment is indirectly controlled according to the user control request for controlling the external control terminal if the control mode is the indirect control mode, wherein the control electrical equipment at least comprises a kind of remote-control electrical equipment and a kind of power on off-type electrical equipment. Different kinds of electrical equipment can be controlled in the same environment, the operation is convenient, and management is facilitated.

The invention relates to the display technology field, and provides a protective film and a manufacturing method, a flexible panel and the manufacturing method, and a display device. The protective film is attached to a flexible substrate, the flexible substrate includes a straight area and a bent area, the protective film includes a protective film body, and a plurality of blind holes are arranged in one surface, attached to the flexible substrate, of the protective film body. When the protective film is attached to the flexible substrate, an orthographic projection of one part of the blind holes in the flexible substrate is located in the bent area, and the orthographic projection of the other part of the blind holes in the flexible substrate is located in the straight area. The protective film forms negative pressure through the blind holes to be attached to the flexible substrate, bonding through an adhesive layer is not needed, ashes cannot be generated in a laser cutting process,problems of a short circuit and the like are avoided, and a percent of pass is increased. When the protective film is bent towards one side of the blind holes, the blind holes can provide an extrusion space for the protective film, and when the protective film is bent towards one side deviating from the blind holes, the blind holes can provide an extension space for the protective film so that astress of a bending area is reduced, and potential quality hazards are decreased.

The invention provides an air conditioner system which can protect part of electrical element cooling pipe forming a refrigerant pipe against condensation. The air conditioner system comprises a compressor, an outdoor heat exchanger and an indoor heat exchanger which are connected through the refrigerant pipe in sequence. The refrigerant pipe between the outdoor heat exchanger as the indoor heat exchanger comprises a cooling pipe provided with an inlet end and an outlet end. The cooling pipe comprises a first branch pipe and a second branch pipe arranged between the inlet end and the outlet end in parallel. The casting pipe type electrical element cooling pipe is arranged on the first branch pipe. A flow control element is arranged on the second branch pipe.

The invention discloses a compression and heat resistant practical wire cable, which comprises a fireproof lapped covering, a plurality of main wire cores and a reinforcing core tube are arranged in the fireproof lapped covering, the reinforcing core tube is arranged among the plurality of main wire cores, and a plurality of compression-resistant support frames are arranged among the plurality ofmain wire cores at equal intervals. The reinforcing core tube penetrates through the plurality of compression-resistant support frames to make contact with the inner wall of the fireproof lapped covering, the interior of the fireproof lapped covering is filled with heat-insulating and flame-retardant particles, and the exterior of the fireproof lapped covering is coated with a compression-resistant and flame-retardant layer. The plurality of compression-resistant support frames are arranged on the main wire cores and the reinforcing core tube, so that a good compression-resistant protection effect can be achieved on the wire cable, when the cable is extruded, a polyurethane elastomer material can achieve a protection effect on the main wire cores and the reinforcing core tube, and the problems of short circuit and the like caused by damage of an insulating layer can be avoided; and when the cable is subjected to external impact, an elastic connecting piece can play a role in buffering,so that the stress of the cable can be dispersed, and the flame-retardant outer sheath is prevented from being damaged.

The invention relates to the field of a lithium ion battery, and discloses a lamination lithium ion battery and a preparation method thereof. The preparation method comprises the following steps: various positive plates are loaded into various membrane barrier bags according to a loading process, thus obtaining various positive plate membrane barrier bags, wherein in the loading process, a first membrane barrier and a second membrane barrier are respectively placed at the top surface and the bottom surface of each positive plate, and at least two lengthwise edges of each first membrane barrier and each second membrane barrier are heat-sealed to form at least two discontinuous seals of heat sealing; a lamination cell body is acquired by laminating negative plates and the positive plates, the middle part of the lamination cell body is fixed, the lamination cell body is placed naturally at the top of an arc-shaped bracket, the various membrane barrier layers in the lamination cell body are respectively cohered with the positive plates and the negative plates on the membrane barrier layers by virtue of heat pressing of the lamination cell body; the arc-shaped lamination cell body is acquired by virtue of standing of the lamination cell body, and then is placed inside the hollow position of a cell body of an aluminium and plastic film shell body, the aluminium and plastic film shell body is heat-sealed, and the arc-shaped lamination cell body is encapsulated in the aluminium and plastic film shell body, so that the lamination lithium ion battery is acquired.

The invention provides a food processor, comprising: a machine base having a receiving cavity; a cup body, with the cross-sectional area of the top end of the cup body being larger than the cross-sectional area of the lower end of the cup body, the cup body being arranged on the frame, and a spoiler rib being arranged on the inner wall of the cup body; a stirring assembly one end of which extendsinto the inside of the cup body, and the other end of which is connected with a permanent magnet direct current motor; a permanent magnet dc motor disposed in the accommodation chamber, wherein the speed range of the permanent magnet dc motor is from 10000 rpm to 18000 rpm. By keeping the rotational speed of the permanent magnet dc motor between 10000 rpm and 18000 rpm, As a result, when too manyingredients are added to the food processor, namely when the load is large, the speed of the permanent magnet dc motor will not be lower than 10000rpm, which effectively ensures the crushing effect ofthe food materials, and when the load is small, the speed of the permanent magnet dc motor will not exceed 18000rpm, which effectively reduces the noise of the food processor and improves the user experience.

The invention relates to an automatic diagnosis system for an integrated circuit tester. The automatic diagnosis system comprises an external program-controlled digital meter, power supply automatic diagnosis and machine internal automatic diagnosis. In the power supply automatic diagnosis, impedance measurement is performed firstly, the program-controlled digital meter is placed in an impedance gear position, a relay is switched off, and testing is performed on circuits one after another until all the circuits are tested; results are compared with preset results, voltage measurement is performed if the results are all within the range, and the process of voltage measurement is the same as the process of resistance measurement; finally, all the test results are compared with a preset correct value range by upper computer software to obtain a diagnosis result; the machine internal automatic diagnosis is performed on the premise that the power source automatic diagnosis result has no problem; the machine internal automatic diagnosis includes storage unit automatic diagnosis, PE logic automatic diagnosis and PPMU simulation automatic diagnosis. By means of the system, manual measurement of each test point is not needed, test efficiency is improved, and the problems of short circuit and the like due to the fact that a test probe is in contact with the surrounding devices are avoided.

The invention belongs to the technical field of microbial degradation, and discloses a microbial degradation toilet. The problems that in the prior art, urine is difficult to separate and collect through a microorganism closestool, and the overall excrement degradation effect is poor are solved. The biodegradable toilet comprises a closestool and a sewage discharging device which are arranged on the inner side and the outer side of a toilet respectively, the closestool comprises a closestool body, a microbial degradation pool is arranged at the bottom in the closestool body, a urinal is arranged on one side in the closestool body, the periphery of the urinal is sunken towards the middle, a urine conveying pipe is connected to the bottom of the sunken position of the urinal, and the other end of the urine conveying pipe penetrates out of the closestool body and is connected with a liquid conveying pipe; and the sewage discharging device comprises a pump body capable of pumping water, and a liquid inlet pipe of the pump body is connected with the liquid conveying pipe. Urine is independently collected through the urinal, the urine conveying pipe and the pump body, so that a better environment is prevented from being provided for degradation of microorganisms, and the overall degradation effect is improved.

The invention discloses an air conditioner system which contributes to avoiding moisture condensation of a cooling pipeline forming one part of a refrigerant pipeline. The air conditioner system comprises a compressor, an outdoor heat exchanger, an outdoor flow adjusting device, a storage tank and an indoor heat exchanger which are sequentially connected through the refrigerant pipeline. The portion, between the storage tank and the indoor heat exchanger, of the refrigerant pipeline comprises the cooling pipeline. The air conditioner system further comprises a storage tank pressurization pipeline provided with a flow control element and a control portion which controls operation of the air conditioner system. One end of the storage tank pressurization pipeline is connected to the portion between the compressor and the outdoor heat exchanger, the other end of the storage tank pressurization pipeline is connected to the portion between the storage tank and the outdoor flow adjusting device, and the opening of the flow control element is increased through the control portion when it is judged that moisture condensation conditions of the cooling pipeline are met.

The invention provides a charger and relates to the technical field of electronics. The charger comprises a charger pedestal and a charging line, the charger pedestal is in electric connection with the charger, the charging line is provided with a line body and an output end, and the charger pedestal is provided with a switch unit which is used for controlling the charger pedestal to supply electric power to the charging line when that the output end of the charging line is connected with a load, According to the charger, charger reliability and security can be improved.

The invention discloses a liquid metal battery positive electrode current collector with a metal carbide coating with a concave-convex surface microstructure. The metal carbide coating with special surface morphology is additionally arranged on the conductive substrate, so that the contact stability with liquid metal, the liquid metal corrosion resistance and the wear resistance are effectively improved on the basis of ensuring the good conductivity of the current collector, and the related preparation method is simple and relatively low in cost, and has a wide industrial application prospect.

The application discloses a chip wafer and a manufacturing method thereof. The chip wafer comprises a substrate; an interlayer dielectric layer, disposed on the substrate, and provided with a plurality of contact holes which penetrate through the interlayer dielectric layer in a direction perpendicular to the substrate; a metal layer, disposed on the interlayer dielectric layer; and a plurality of connecting portions, being respectively located in the plurality of contact holes and connecting the metal layer and the substrate. The interlayer dielectric layer comprises a first region and a second region surrounding the first region, the contact holes are disposed in both the first region and the second region, and the thickness of the first region is greater than that of the second region. According to the application, as the thickness of the region, located at the edge of the chip wafer, of the interlayer dielectric layer is reduced, that is the second region is thinned, the contact holes can more easily penetrate through the interlayer dielectric layer, the problem that the contact holes cannot penetrate through the interlayer dielectric layer is avoided, the connecting portions in the contact holes can be ensured to reliably connect the metal layer and the substrate, and the yield of the edge part of the chip wafer is improved.

The invention provides a solid oxide fuel cell stack which comprises an upper current collector, a lower current collector and a stacked structure accommodated between the upper current collector and the lower current collector, wherein the stacked structure comprises at least two connecting parts and a cell piece arranged between the two adjacent connecting parts, each connecting part comprises the anode side and the cathode side, an oxidizing gas sealing part is arranged on the anode side of each connecting part, and a fuel gas sealing part is arranged on the cathode side of each connecting part; and a closed oxidizing gas inlet channel, a closed fuel gas inlet channel, a closed fuel gas outlet channel and an open oxidizing gas outlet channel are arranged on the stacked structure. Compared with the prior art, as an oxidizing gas outlet is open, the internal gas pressure difference at the cathode sides of the connecting parts is smaller, the flow is more smooth, the problem of mutual gas moving between fuel gas and oxidizing gas can be effectively solved, the sealing reliability of the stack can be improved, and the finished product rate of the stack and the performance operation stability can be further improved.

The invention relates to an electric carrier, wherein it comprises main body, several welding pads on the face of main body, and a protective layer covering the main body; the protective layer has one cut between two couple welding pad, while at least three side faces are exposed from the welding pads; the protective layer has at least one independent left part between the welding pads; the electric element can connect the left part, to connect the couple welding pads via conductor; the electric element and the face of main body have non-dead-corner channel; insulated resin covers the electric element to be distributed at the low side of electric element and in the open, to cover at least three side faces of welding pad, to avoid generating gas hole at low side of electric element, and avoid bad connection between welding pads or between conductors of nearby electric elements.

The invention discloses a grinding terminal precision reinforced method in the chemical mechanical grinding course before grinding, which comprises the following steps: providing testing piece with grinded layer and material layer under the grinded layer; supplying certain wavelength testing beam to illuminate testing piece; proceeding chemical grinding for the testing piece; removing the grinded layer until exposing material layer; detecting reflecting strength of detected beam in the grinding course; judging the removing degree to approach the reflecting strength of interface between grinded layer and material layer; possessing the wavelength detected beam for subsequent grinding course if the reflecting strength is downward increasingly.

The invention discloses a pickling device used for electronic components, and relates to the field of electronic components. The pickling device comprises a pickling solution storage tank. A portal support is fixedly connected to the top of the pickling solution storage tank. A motor is fixedly connected to the left side of the top of the portal support. The output end of the motor is connected with a horizontal screw rod through a coupling. A sliding barrel is connected to the outer side of the horizontal screw rod in a threaded mode. An oblique ejection rod is rotatably connected to the lower portion of the sliding barrel. A guide base is fixedly connected to the lower portion of the portal support. A vertical screw rod is vertically and slidably connected to the inner side of the guidebase. A connecting end is fixedly connected to the upper portion of the vertical screw rod. A through groove is formed in the upper portion of the portal support. The oblique ejection rod penetrates through the through groove to be rotatably connected with the connecting end. The pickling device is simple in structure and convenient to use; the picking device can be driven by a motor in use to sufficiently and thoroughly pickle the electronic components, so that the short circuits or other problems caused by insufficient cleaning of the electronic components are avoided, and the quality safetyof electronic products is guaranteed; and the pickling device is worthy of popularization.

The invention relates to the field of thermal management of power batteries, and discloses a power battery liquid cooling device. The power battery liquid cooling device comprises battery packs, battery sleeves, pulsating heat pipes and a cooling passage with coolant inside. The battery packs are respectively arranged in the battery sleeves. The evaporation section of each pulsating heat pipe is connected with the outer walls of the corresponding battery sleeves, and the condensation section of each pulsating heat pipe is connected with the cooling passage. The invention also discloses a working method of the power battery liquid cooling device. The beneficial effect is as follows: through reasonable design of the arrangement of the battery sleeves and the pulsating heat pipes, the thermalresistance of the liquid cooling device of the battery packs is reduced, the arrangement of the cooling passage on a single side of the battery packs is realized, and the temperature and temperatureuniformity of the battery packs can be well controlled.

The invention provides a cleaning device and a dust collector, and the cleaning device comprises a shell which comprises a top cover and a chassis which are connected, and a front frame which is arranged on the top cover, a cleaning opening is formed in the lower part of the shell and is suitable for sucking dust, and an accommodating space is formed between the top cover and the front frame; the cleaning device comprises a lighting device which is arranged in the containing space, the containing space is provided with a light passing part, and the lighting device has a lighting state of lighting the front position of the shell. The containing space with the light transmitting part is arranged between the top cover and the front frame, the lighting device is arranged in the containing space, the light transmitting part is arranged on the containing space, lighting of the front position of the shell is achieved by adjusting the orientation of the light transmitting part, and the defect that in the prior art, the cleaning effect of the dust collector is poor at the insufficient light position is overcome.

The utility model discloses a processing circuit used for improving the performance of the audio equipment, and the processing equipment thereof. The processing equipment comprises a casing body, the input terminal interface of an audio host machine is arranged at one side of the casing body, the input terminal interface of a power supply is arranged at the other side of the casing body, a protective tube with filtering function is connected on the anode power wire of the input terminal of the audio host machine in series, and a capacitor is bridged between the anode power wire of the input terminal and the cathode power wire of the input terminal of the audio host machine. The processing equipment has the advantages that all sorts of harmful resonance in the circuit can be effectively restrained through the capacitor, and the capacitor plays the role of filtering; the protective tube with the filtering function can effectively restrain all sorts of harmful resonance in the circuit, and plays the role of filtering, reduces the impedance caused by vibration, and improves the degree of purity and the stability of the power supply, the higher harmonics components harmful to the signals are eliminated through the optimization of the quality of the power supply, and the powerful output capability is provided for the machine through the high-quality abundant electric current.

The invention belongs to the technical field of dispensing equipment, and particularly relates to a dispensing machine for touch screen production and a dispensing method.The dispensing machine comprises a box body, a horizontal heat insulation plate is fixedly connected to the inner wall of the box body and divides the box body into a refrigeration cavity and a heating cavity, and an air compressor is installed at the top of the box body; a vortex tube is fixedly installed on the side wall of the box body, the output end of the air compressor is connected with the input end of the vortex tube, the two output ends of the vortex tube are connected with a cold air tube and a hot air tube respectively, and the output ends of the cold air tube and the hot air tube extend into the refrigerating cavity and the heating cavity respectively. By arranging the air compressor and the vortex tube, hot air can be introduced into the heating cavity while the refrigeration cavity is refrigerated, an additional hot air blower is not needed, by arranging the memory spring, the dispensing work can be rapidly completed, the automation degree is high, the dispensing efficiency is effectively improved, by arranging the sponge block, water stains can be rapidly absorbed, and the dispensing efficiency is improved. And the short circuit problem is avoided.

The invention discloses a flexible circuit board, a manufacturing method thereof and a display module comprising the flexible circuit board, and relates to the technical field of display. The flexiblecircuit board comprises a plurality of electric connection terminals, and the electric connection terminals comprise the first electric connection terminals and the second electric connection terminals. In a first direction, the length of the first electric connection terminals is greater than that of the second electric connection terminals, and the number of the first electric connection terminals in a first area is greater than that of the first electric connection terminals in a second area. The flexible circuit board also comprises fool-proof marks which are positioned in the first areaor the second area, and the orthographic projection of the fool-proof marks on the flexible circuit board does not intersect with the orthographic projection of the electric connection terminals on the flexible circuit board. According to the invention, the fool-proof marks are arranged on the flexible circuit board to identify the manfuacturing direction of a connector, so that the connector direction does not need to be checked manually and repeatedly, the workload of the workers is greatly reduced, the problem of missed checking caused by manual checking is avoided, the problems of short circuit and the like caused by the reverse manfuacturing of the connector are effectively avoided, and the connector manfuacturing efficiency and quality are greatly improved.

The invention discloses an intelligent advertisement screen. The intelligent advertisement screen comprises an advertising screen body, a shell arranged outside the advertising screen body and a rearcover covering the shell. The shell comprises tempered glass and an outer frame arranged on the periphery of the tempered glass. One end of the outer frame is connected with the toughened glass, theouter frame and the toughened glass define an installation cavity for installing and fixing the advertisement screen body, the other end of the outer frame is connected with the rear cover, the outerframe is provided with a waterproof first embedded waterproof structure for embedding and clamping the toughened glass, and one end, opposite to the rear cover, of the shell is provided with a waterproof drainage structure. According to the intelligent advertisement screen provided by the invention, water mist and dust are effectively prevented from entering the intelligent advertisement screen through the gap between the tempered glass and the outer frame and the gap formed after the shell and the rear cover are covered, so that the problems of short circuit and the like of circuits in the intelligent advertisement screen caused by the water mist are avoided, and the circuits in the intelligent advertisement screen are effectively protected.

The invention provides a wafer back metallization method. The method comprises the following steps of: providing a wafer; coating the back surface of the wafer with photoresist on to form a photoetching layer; performing exposure treatment on the photoetching layer to determine an exposure area needing metallization treatment on the back surface of the wafer; developing the photoetching layer to remove the photoresist in the exposure area, and making the section width of the reserved photoresist gradually reduced in the direction towards the wafer; depositing a metal material to form an initial metal layer, and enabling the width of the initial metal layer between adjacent photoresist to be matched with the minimum width between the adjacent photoresist; and removing the photoresist to form a patterned metal layer. According to the method of the invention, the yield of a wafer back gold process and subsequent packaging can be improved.

The invention provides an explosion-proof FID. The explosion-proof FID comprises a first cylindrical part, and an ignition wire, a collector and a polarization electrode which are arranged in the first cylindrical part. A second cylindrical part is arranged on the inner side of the first cylindrical part and connected with an upstream part and a downstream part respectively, and the interior of the first cylindrical part is separated into a portion on the inner side of the second cylindrical part and an interlayer portion between the second cylindrical part and the first cylindrical part. A nozzle is arranged in the second cylindrical part and is used for transmitting sample gas. The polarization electrode, the collector and the ignition wire are sequentially fixed on the second cylindrical part, and are insulated and sealed with the second cylindrical part. The polarization electrode, the collector and the ignition wire which extend into the second cylindrical part are arranged in sequence, and the polarization electrode is connected with the nozzle. The explosion-proof FID has the advantages of high signal-to-noise ratio, good reliability and the like.