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.

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 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 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 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 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.

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.