418results about How to "Good explosion-proof" patented technology

The invention discloses an upper cover assembly of a lithium battery. The upper cover assembly comprises an upper cover body, a positive electrode post, a negative electrode post, a positive electrode gasket, a negative electrode gasket, an anti-explosion valve and a protection film, wherein the positive electrode post and the negative electrode post are arranged at the left and right ends of the upper cover body respectively; the positive electrode gasket and the negative electrode gasket are arranged at the bottom of the upper cover body, and are corresponding to the positions of the positive electrode post and the negative electrode post respectively; the anti-explosion valve is arranged on the upper cover body and positioned between the positive electrode post and the negative electrode post; the anti-explosion valve adopts a circular structure; and the protection film is adhered to the upper part of the anti-explosion valve. By adoption of the mode, the upper cover assembly of the lithium battery is simple in structure and provided with the anti-explosion valve, and the protection film is adhered to the upper part of the anti-explosion valve, so that the upper cover assembly has a relatively good anti-explosion performance and high safety; and therefore, an explosion phenomenon when the lithium battery is over-charged can be fully avoided.

The invention provides metal sandwiched glass with intermediate film which comprises a glass plate, intermediate film having surface gluing material EVA or SGP, a metallic decorative thin panel, an intermediate film of organic gluing material EVA or SGP, and a glass plate. And the secondary rolling production process comprises glass cleaning, hot-air drying, sheet combining, first heating, first rolling precompression, second heating, second rolling precompression, quality inspection, final forming in autoclave, and packaging.

The present invention relates to an explosion-barrier material which is made of kerfed and expanded aluminum alloy foil grid, and has a honeycomb-shaped vesicular structure. The chemical components have weight percentages that silicon is 0.3-0.6 percent, iron is 0.3-0.7 percent, copper is 0.1-0.2 percent, manganese is 0.8-1.8 percent, zinc is 0.1 percent, titanium is 0.1-0.2 percent, and aluminum is residual. The present invention also relates to the manufacture process of the explosion-barrier material. The process has steps that the aluminum alloy ingot is rolled to be aluminum alloy foil, cut to be kerfed aluminum foil with a joint cutter, and shaped and wound, then tempering treatment is performed to the shaped and wound aluminum foil with the tempering temperature of 220-240 DEG C and the tempering time durance of 8-10 hours, the aluminum foil after the tempering is discharged, cut and rolled, and then pulled and expanded to be the aluminum foil grid, and the aluminum foil grid is folded and molded to be the grid shaped explosion-barrier material. The explosion-barrier material of the present invention has the advantages of good explosion-proof performance, good flexibility, high tensile strength, and high elongation ratio.

The invention discloses a method and a device for measuring accumulated liquid of a natural gas pipeline. The method comprises the following steps of: vertically transmitting high-frequency ultrasonic wave into the pipeline by an ultrasonic probe coupled to the outer wall of the measured pipeline, wherein the energy of reflection echo has great difference due to different properties of gas and liquid media; judging that the pipe inner wall is contacted with gas or liquid at the position of the probe according to the characteristic of echo received by the ultrasonic probe and reflected by the pipe inner wall; gradually adjusting the measurement position of the ultrasonic probe on the pipe outer wall along the circumferential direction; and recording a circumferential angle of the ultrasonic probe by a circumferential angle ruler when the echo has mutation, and further calculating the height of the accumulated liquid. The method is a non-intrusive accumulated liquid measurement method, does not change the structure of the conventional pipeline, has no medium leakage risk, does not affect the operation such as cleaning the pipeline and the like, meanwhile is not affected by the composition of gas and liquid phase media in the pipeline and parameters such as temperature, pressure and the like, overcomes the defect that the conventional ultrasonic technology needs complex sound velocity correction, and is particularly suitable for measuring the accumulated liquid inside the pipeline for conveying corrosive and toxic media.

The invention discloses a touch screen panel, which comprises a polyethylene glycol terephthalate tablet component and a glass cover plate component, wherein the polyethylene glycol terephthalate tablet component comprises polyethylene glycol terephthalate tablets; lower electrodes are formed on lower surfaces of the polyethylene glycol terephthalate tablets; the glass cover plate component comprises glass cover plates; anti-fingerprint films are coated on upper surfaces of the glass cover plates; printing-ink view windows are printed around the lower surfaces of the glass cover plates; anti-reflection layers are coated on the lower surfaces of the glass cover plates; upper electrodes are formed on the lower surfaces of the anti-reflection layers; and the upper surface of the polyethylene glycol terephthalate tablet component is adhered to the lower surface of the glass cover plate component by using an optical transparent adhesive. The invention also discloses a method for manufacturing the touch screen panel. By the invention, reflection can be reduced, the definition of a display screen is improved, and production cost is low.

The invention relates to the field of silicon dioxide aerogel, and particularly discloses a silicon dioxide aerogel compound fabric, a preparation method and a military tent cloth. The preparation of the silicon dioxide aerogel compound fabric comprises the following steps of: soaking a cloth made from high-strength synthetic fibers into a silicon dioxide sol; after the surface of the cloth is completely soaked, sealing the cloth soaked with the silicon dioxide sol and made of the high-strength synthetic fibers, and aging by a gel; finally supercritically drying. The military tent cloth comprises an outer layer, an interlayer and an inner layer, wherein the outer layer is a camouflage cloth coated with vinyl polyester fibers; the interlayer is a silicon dioxide aerogel compound fabric part; the inner layer is a military dacron cloth. The silicon dioxide aerogel compound fabric provided by the invention has the advantages of light weight, good heat-insulating property and extremely high absorption property on high-strength impact force and has the characteristics of good heat-insulating property, light weight and anti-explosion property.

The invention relates to a composite armor structure preventing blast waves. The composite armor structure comprises a metamaterial layer, a combining layer and an energy-absorption buffering layer in sequence from outside to inside. The metamaterial layer and the energy-absorption buffering layer are combined in an optimized mode through the combining layer. The metamaterial layer is of a microstructure composed of a metal-nonmetal sphere system and can block shock waves in the area near the peak overpressure value in blast waves. The microstructure composed of the metal-nonmetal sphere system comprises metal balls, elastic materials and base body materials, and the metal balls wrapped by the metal materials are embedded into the base body materials. The blast resistant structure can effectively block explosion shock waves and more easily absorb explosion pressure waves, and therefore the explosion proofing ability of the structure is improved.

The invention discloses a gunning material for a main tapping channel of a single-taphole blast furnace. The gunning material comprises the following components in part by mass: 45 to 52 parts of dense corundum or brown corundum, 24 to 32 parts of silicon carbide, 6 to 12 parts of white corundum, 5 to 10 parts of alpha-Al2O3 micro powder, 1 to 3 parts of micro silicon powder, 2 to 3 parts of purecalcium aluminate cement, 1 to 5 parts of spherical asphalt, 2 to 4 parts of silicon metal powder, 1 to 1.5 parts of nano silicon-aluminum gel powder, 0.5 to 0.8 part of boron nitride, 0.3 to 0.5 part of neodymium oxide, 0.5 to 0.8 part of zirconia, 2 to 2.5 parts of compound additive and 0.3 to 0.5 part of compound explosion-proof agent. The high temperature slag corrosion resistance, high temperature strength, hydration rate and early strength of the gunning material are improved, the gunning material has high explosion-proof property and quickly achieves high temperature strength at high temperature, and the gunning stack cannot fall.

The invention discloses a method for preparing a multifunctional automobile glass window film. The method comprises the whole process of preparing specific components of the glass window film into the glass window film by using a specific method. In such a mode, by adopting the method for preparing the multifunctional automobile glass window film, the automobile glass window not only has various characteristics of explosion resistance, abrasion resistance, ultraviolet resistance, privacy, glare resistance, thermal insulation, sun blocking and the like, but also automobile owners can select and manufacture exclusive automobile window films according to personality and favor of self, and thus requirements of people can be better met.

The invention discloses a new energy battery explosion-proof valve, which comprises a main valve body, a seal ring, a piece of explosion-proof membrane paper, a membrane paper protection plate and a protective cover, wherein a membrane paper mounting platform is arranged at one side of the main valve body; the explosion-proof membrane paper is welded on the membrane paper mounting platform in a hot melting manner; an annular bump is arranged on the outer circumference of the membrane paper mounting platform; the membrane paper protection plate is arranged in the annular bump; a protective bottom plate is arranged at the lower part of the membrane paper mounting platform; the protective bottom plate is provided with an explosion-proof pointed cone toward the explosion-proof membrane paper; the protective cover is arranged out of the protective bottom plate; the seal ring is arranged between the outer surface of the annular bump and the main valve body; the main valve body is movably connected with a battery shell through the annular bump; and the main valve body and a battery shell are sealed through the seal ring. The new energy battery explosion-proof valve has the advantages of being simple in structure, low in cost, dustproof, waterproof, explosion-proof and breathable, and can balance internal pressure and external pressure of a sealed accommodating cavity of a battery.

A manufacturing method of an electronic part (varistor 2) whose device 4 is covered by an outer cover material 6, including the steps of: forming a first outer cover film 8 by coating and fixing a first outer cover film liquid material 30 that includes an organic solvent, on the device 4; and forming a second outer cover film 10 by coating and fixing a second outer cover film liquid material 34, on the first outer cover film 8. The first outer cover film includes a silicone resin or a silicone elastomer, and one or more kind (s) of aluminum hydroxide, magnesium hydrate, or calcium hydrate at a weight ratio ranging from 45 / 55 to 5 / 95.

The invention is a flexible fireproof cable and its producing process as well as its producing equipment. It uniformly distributes a group of metal wire cores, which are mutually isolated and coated in the vertical direction by mica tape insulating layer and then coats a metal tape outside, the metal tape is folded annularly and closed vertically by a welding line, thus composing the flexible fireproof cable. If it needs a better bending property, it can roll lines on a smooth metal protective cover. Its producing equipment is composed mainly of a twisted wire winder, a cable winder and a metal protective cover coat-welding machine connected in series in sequence. It solves the problems of high temperature resistance, safety and environmental protection as well as process complexity, cable hardness, cable length, and insulating resistance. It can not fire, burn and produce smoke frog and harmful substances even if the surrounding substances have been firing and burning, so it is a permanent fireproof safe environmental protection cable.

The invention provides an air-extrusion type oil transporting and refueling bag which comprises an outer bag, an inner bag, an oil guide pipe, flanges, an oil inlet and outlet valve and a charging valve, the outer bag is of a cylindrical structure, the inner bag is of a bag-shaped structure and arranged inside the outer bag, the opening end direction of the inner bag is as same as that of the outer bag, two ends of the inner bag are connected with two ends of the outer bag through the flanges, a closed cavity is formed between the inner bag and the outer bag, both the oil inlet and outlet valve and the charging valve are arranged on the flange at the opening end, the oil inlet and outlet valve is communicated with the inner bag, the charging valve is communicated with the closed cavity, the oil guide pipe is arranged inside the inner bag, and one end of the oil guide pipe is connected with the oil inlet and outlet valve through a rope. The air-extrusion type oil transporting and refueling bag is convenient to use and high in field adaptability.

The invention discloses an explosion-proof sheet (1) used for an explosion-proof structure of a power battery and aims to provide an explosion-proof sheet (1) which is convenient for processing an explosion-proof indentation (2), and the processing depth of the explosion-proof indentation (2) can be controlled accurately. The explosion-proof indentation (2) is processed and formed on the explosion-proof sheet (1). The invention also discloses the explosion-proof structure for the power battery and the power battery which contain the explosion-proof sheet (1). The explosion-proof sheet and theexplosion-proof structure are mainly used for preventing the power battery from exploding caused by increased inner pressure in unexpected situations.

The invention discloses an anti-blocking explosion-proof valve which comprises a piston, a valve body, a spring and a connecting shaft. A first through hole is formed in a connecting shaft in a penetrating mode, and a protective cover is installed on the valve body around an outer side of the spring. The valve body comprises a plurality of first air leakage gaps corresponding to the protective cover, and first air holes are formed in a cavity between the first air leakage gaps and the protective cover. The piston comprises a piston body, a breathable membrane and an upper cover, a second through hole longitudinally penetrates through the piston body and corresponds to the first through hole, a plurality of through grooves horizontally penetrate through the second through hole and are connected with the second through hole, and second breathable holes are formed in cavities between the through grooves and the upper cover. The invention further discloses a preparation method of the anti-blocking anti-explosion valve. According to the anti-blocking explosion-proof valve, the protective cover is arranged on the outer side of the spring such that combustion eruption objects are effectively prevented from accumulating and adhering to the spring to shorten the compression stroke of the spring, and the opening effect and the exhaust pressure relief efficiency of the explosion-proof valve are prevented from being affected.

The invention discloses a double-sided all-purpose adhesive tape. The adhesive tape is prepared by taking a fiber fabric as a base material, and respectively coating an adhesive layer on the upper and lower sides of the base material. The adhesive layer comprises the following materials in parts by weight: 30-50 parts of butyl rubber, 10-25 parts of polyisobutylene (middle molecular weight), 5-15 parts of polyisobutylene (low molecular weight), 0-10 parts of operating oil, 10-20 parts of modified terpene resin, 0.3-0.5 part of a colorant, 0-0.5 part of an antioxidant, and 0-15 parts of a filler. When the double-sided all-purpose adhesive tape is applied to construction, an adhesive is not required to be daubed on the scene, the double-sided all-purpose adhesive tape can be directly used just through uncovering release paper, and therefore, the adhesive tape is simple and convenient; the adhesive tape is good in weather resistance, aging resistance, water repellency, anti-skidding property, adsorbability, shock-absorbing property, explosion-proof property and heat insulation property, longer in application time and wider in application range; and the adhesive tape has an excellent bonding capacity to various sheet metals, plastic sheets, plastic films and various pipes, therefore, the adhesive tape is extensive in use.

The invention provides a five-freedom-degree spraying robot. The five-freedom-degree spraying robot comprises a base, a lifting arm, a large arm, a small arm, a wrist part and an output shaft, wherein the lifting arm is capable of lifting up and down and horizontally moving relative to the base; a rotation axis of the large arm relative to the lifting arm, a rotation axis of the small arm relative to the large arm and a rotation axis of the wrist part relative to the small arm are same and are same and are parallel to an horizontal movement axis of the lifting arm relative to the base; a rotation axis of the output shaft relative to the wrist part and a rotation axis of the wrist part relative to the small arm are perpendicular to each other and are crossed with each other; a small arm motor, a wrist part motor and an output shaft motor are arranged at the front end of the large arm and are transmitted to the small arm, the wrist part and the output shaft via a one-stage or multi-stage synchronous belt; five motors are isolated in three sealed spaces; each sealed space adopts dynamic and static sealing strategy to ensure that electric gas is isolated with the outside flammable and explosive gases; high explosion resistance is achieved; mounting and driving manners of joint speed reducers are also optimized by the five-freedom-degree spraying robot; the five-freedom-degree spraying robot has the characteristics of simple structure, low cost, large operation space, high flexibility, high tail end positioning accuracy, convenience in wire layout, reliability in sealing and high explosion resistance.

The invention relates to a chassis system for a pure electric vehicle, which is applied to I and II types of explosion-proof environments and has an explosion-proof function. The chassis system comprises an electric power assembly, wherein the electric power assembly is integrated with an explosion-proof driving motor, a speed-reducing box and a wet type parking brake and provides power for an intelligent explosion-proof electric automobile; the speed-reducing box is used for reducing speed and increasing torsion; the wet type parking brake of a safety failure type is provided and used for parking and emergently braking the vehicle on a ramp; and the electric power assembly is placed between a front axle and a rear axle and above a vehicle frame. The chassis system for the pure electric explosion-proof vehicle comprises a single-stage main speed-reducing automobile driving axle with a multi-disc wet type service brake, so that a transmission system has high transmission efficiency and excellent explosion-proof performance. The chassis system for pure electric explosion-proof vehicle comprises an explosion-proof hydraulic system, wherein the explosion-proof hydraulic system is used for providing pressure oil according with the requirement to the multi-disc wet type service brake, the wet type parking brake and a steering system and controlling steering or braking reliably and effectively. The chassis system for pure electric explosion-proof vehicle further comprises an anti-static tyre, so that the explosion-proof performance of the whole vehicle is further improved.

The invention discloses a method for purifying and reclaiming CO2 (carbon dioxide) from landfill gas (LFG) and a device thereof. The method comprises the following steps: separating CO2 from the pre-treated landfill gas through primary pressure swing absorption (PSA); then, obtaining purified CO2 through secondary or multistage PSA; and finally, purifying through liquefaction and flash evaporationor rectification. Since CO2 and CH4 (methane) in the pre-treated landfill gas are different in the absorbability of the absorption material, the method can purify CO2 and reclaim CH4 from the landfill gas as the raw material at the same time. The device of the invention has the advantages of high explosion resistance and good separation effect; and the purity of CO2 can achieve the industrial oranalytical grade through liquefaction and flash evaporation or rectification.

The invention relates to a disc type sludge drying system based on cascade utilization of energy. The system comprises a disc type drying system and a filter-press drying system, wherein the disc type drying system comprises a casing, a stirring shaft is mounted in the casing, discs are mounted on the stirring shaft in a spaced manner, a sludge inlet and a steam outlet are formed in the top of the casing, a dry sludge outlet is formed in the bottom of the casing, the stirring shaft is driven by a stirring motor at one end, the stirring shaft adopts a hollow structure, one end of the stirring shaft is a hot steam inlet, and a condensed water outlet pipe is inserted into the end; the filter-press drying system comprises a filter-press system, a sludge feeding system connected with the filter-press system, a vacuumization system, a hot water circulating system and a sludge output system, the sludge feeding system is connected with a sludge feeding end of the filter-press system, the sludge output system is connected with is connected with a sludge discharging end of the filter-press system, the vacuumization system is used for keeping the filter-press system in a negative pressure state during filter pressing of sludge, and the hot water circulating system is connected with the steam outlet of the disc type drying system.

The invention discloses a degradable high polymer film-coated controlled release fertilizer. The degradable high polymer film-coated controlled release fertilizer has the particle size range of 2.0 to 5.0mm, the coating rate of 2 to 10 percent and the nutrient release period of 1 to 10 months. A film-coated material has good biodegradability, so a film shell can be degraded quickly after the fertilizer is applied, and the controlled release fertilizer is favorable for protecting the agricultural ecological environment. The nutrient release period of the product can be controlled between 1 and 12 months accurately. In addition, products with different release periods and different release characteristics can be blended in a certain proportion and made into specific film-coated controlled release fertilizers special for various crops by simulating the nutrient demands of the various crops, and nutrient release curves of the controlled release fertilizers are made to coincide with nutrient uptake curves of the crops to achieve the aim of controlling the release of the nutrient accurately.

The invention relates to a novel explosion-proof composite structure based on metamaterial. The novel explosion-proof composite structure based on the metamaterial sequentially comprises a metamaterial layer, a combination layer and an energy-absorbing and buffering layer from outside to inside, wherein the metamaterial layer and the energy-absorbing and buffering layer are combined through the combination layer; the metamaterial layer are of microstructures composed of metal-nonmetal sphere systems, and the microstructures composed of the metal-nonmetal sphere systems comprise metal spheres, elastic material and base material, wherein the metal spheres covered by the elastic material are embedded into the base material. According to the novel explosion-proof composite structure of the structural design, explosive shock waves can be effectively blocked, explosion pressure waves can be absorbed more easily, and therefore the explosion-proof capacity of the structure is improved. Compared with existing explosion-proof structures, the novel explosion-proof composite structure has the advantage that the explosion-proof performance is greatly improved under the condition of the same manufacturing cost.

The invention relates to a drill feeding system for a petroleum drilling machine, and in particular relates to a multifunctional automatic drill feeding system of a hydraulic motor of a petroleum drilling machine. The system comprises a hydraulic motor, a hydraulic pump, a PLC (programmable logic controller) electric control unit, a first proportional electromagnetic overflow pressure reducing valve and a second proportional electromagnetic overflow pressure reducing valve, wherein a cavity A and a cavity B of the hydraulic motor are respectively and correspondingly connected with a cavity A and a cavity B of the hydraulic pump; control ports X1 and X2 of the hydraulic pump are connected with the first proportional electromagnetic overflow pressure reducing valve and the second proportional electromagnetic overflow pressure reducing valve respectively; the cavity A and the cavity B of the hydraulic motor are respectively and correspondingly connected with a first pressure sensor and a second pressure sensor which are connected with the PLC electric control unit; and the PLC electric control unit is also connected with a slurry pressure sensor and a power swivel pressure sensor. The drill feeding system realizes a full-hydraulic automatic drill feeding function, and has good explosion-proof performance.

The invention provides a multifunctional safety helmet. The multifunctional safety helmet comprises a helmet shell and a fastening band, wherein a helmet lining sweat absorption band is arranged on the inner surface of a helmet brim of the helmet shell; a polycrystalline silicon solar cell panel is stuck on each of the two sides of the top of the helmet shell; a front side of the helmet shell is connected with an energy storage small fan through a retractable pipe; the polycrystalline silicon solar cell panels are connected with the energy storage small fan through a cell box; the cell box is provided with a bidirectional charging USB (Universal Serial Bus) connector; an LED (Light Emitting Diode) headlamp, a near electric acousto-optic emitter and a mini-type camera are mounted at the front part of the helmet shell; an organic glass protection cover is connected with the bottom of the front end of the helmet shell; the organic glass protection cover is integrally provided with a self-suction filtering type particular-matter-proof breathing sticking film; a bracket is arranged on the side face of the helmet shell; and a Bluetooth earphone is mounted on the bracket. The safety helmet integrates a plurality of functions; the safety helmet has a small size, is convenient to operate and is convenient to carry when being worn; the safety helmet can be detached and worn freely according to the requirements of workplaces; any part is detachable and optimization of a working environment is realized; and bodies can be protected and guarantees are provided for construction tasks.

The invention relates to a mine flameproof and intrinsic safety type variable frequency speed control device, which comprises a frequency converter consisting of a three-phase rectifier, a filtering capacitor and an IGBT inverter, a control device, and a flameproof case body, wherein the control device comprises an isolating switch, a power frequency and secondary control loop, and a variable frequency and control loop. The variable frequency speed control device has a variable frequency operating mode and a power frequency operating mode, and gives priority to the variable frequency operating mode complemented with the power frequency operating mode, thus the variable frequency speed control device not only can regulate the speed and save energy better, but also has the advantages of dust control, moisture protection, flame protection, and the like; and the variable frequency speed control device adopts digital display, which not only has a function of remote and approach controls, but also has functions of displaying electric energy, namely displaying load electric energy clearly, and temperature control, and has protection functions of surge protection, open phase protection, over voltage protection, under-voltage protection, and the like. The variable frequency speed control device can be applied to underground places with coal dust or gas coal dust explosion in coal mines to perform controls of starting, stopping and variable frequency speed control on a three-phase flameproof motor, and performs various protections on the motor. The variable frequency speed control device adopts a variable frequency speed control method which is advanced and can be widely popularized.

The invention provides an explosion proof type macromolecular self-regulating heating tape. The explosion proof type macromolecular self-regulating heating tape comprises two heating wires arranged in parallel, and a PTC material layer is evenly extruded on the two heating wires respectively; the PTC material layer is prepared from the following raw materials in part by weight: 82 parts of high-pressure low-density polyhexene, 9 parts of hexine carbon black, 8 parts of zirconia and 1 part of trimethanolpropyl trimethylacrylate; the outside of the PTC material layer is coated with an insulating layer, of which the outside is coated with an internal shielding layer and an internal sheath in turn; and the outside of the internal sheath is also coated with an external shielding layer and an external sheath in turn. The explosion proof type macromolecular self-regulating heating tape uses the PTC materials to control the temperature and adopts the structure with double shielding layers and double sheathes, so that the starting current is low, the heat tracing temperature is high, the performance is stable, and the explosion proof property is good.

The invention discloses an oil purifier for oil used in an anti-explosion boat. The oil purifier for the oil used in the anti-explosion boat is characterized by comprising a bottom plate and an oil inlet portion, a filtering portion, an oil outlet portion and a control portion, wherein the an oil inlet portion, the filtering portion, the oil outlet portion and the control portion are arranged on the bottom plate. The oil inlet portion is provided with an oil pump which is used as oil power, and an oil inlet end of the oil pump is provided with an oil suction filter for primary filtering; and then the filter portion is sequentially provided with a protection filter, a coalescing separator and a fine filter so as to achieve multiple-layer filtering. By adopting the coalescing separator and combining the principle of comprehensive multiple-layer filtering, the oil purifier for the oil used in the anti-explosion boat is capable of achieving high-efficiency dehydration and meeting demands of fine separation and real-time separation, and has the advantages of being small in size, low in energy consumption, little in vibration, long in service life, easy and convenient to operate and maintain, low in operation cost, good in anti-explosion performance, safe and reliable and high in automatic degree.

An explosion-proof lamp comprises a light source component and a bracket. The light source component comprises an illumination lamp, a lamp housing and a lampshade. The lampshade comprises a lampshade body in a transparent panel structure. One side of the lampshade body is provided with a plurality of parallel linear light condensing strips in identical structures. Each of the linear light condensing strips comprises an arc-shaped light condensing surface. The linear light condensing strips are integrated with the lampshade body and form a Fresnel lens. The other side of the lampshade body faces to the illumination lamp. The bracket comprises a framework and a universal ball joint; and at least two groups of light source components are provided. A plurality of light source components for illumination is provided, a single light source component employs a low power illumination lamp, the lampshade is employed to increase the light intensity of the illumination lamp, and the irradiation areas of the plurality of light source components are complementary, thereby the low power and the low heat productivity of each single illumination lamp is ensured under the premise of ensuring enough light intensity and wider irradiation area; and accordingly the explosion-proof lamp is of excellent explosion-proof performance when it is applied in a dangerous zone.

The invention discloses self-dimming transparent composite aerogel and a preparation method thereof. The self-dimming transparent composite aerogel is characterized by comprising one aerogel layer, athermochromic layer and another aerogel layer, and the thermochromic layer is a composite aerogel layer with vanadium dioxide nanoparticles inside. The invention further provides a preparation methodof the self-dimming type transparent composite aerogel. The preparation method comprises the following steps of preparation of matrix gel, preparation of thermochromic gel, preparation of composite gel and supercritical drying. The temperature control type transparent composite aerogel has excellent heat insulation and heat preservation effects, is light, transparent, soundproof, resistant to explosion, capable of reducing vibration and absorbing energy and the like, and also has a self-dimming characteristic, that is, the optical performance of the aerogel can be automatically adjusted through ambient temperature change. The energy-saving efficiency is improved; moreover, the preparation process is simple, convenient and practical, and the application value is very high.

This invention relates to a mineral signal insulation cable including a conductor, an insulator and a jacket characterizing that all of the three are inorganic objects, the conductor is a core of twist copper wires, the insulator is pure MgO powder added with silicon oil and the jacket is a copper jacket formed by continuously welding and the MgO powder is set in the slot between the conductor and the jacket, the process of which is simple and advanced, the outer diameter is small and it's not necessary to protect it with pipes, good signal and phone communication can be kept in fire since it's smokeless and nonpoisonous.