85results about How to "Prevent explosion accidents" patented technology

This invention relates to the process of a kind of explode restrain material. chemical composition of it includes Si 0.1-0.6,Fe 0.2-0.7,Cu 0.05-0.1,Mn 0.6-1.2,Zn 0.05- 0.1,Ti 0.03-0.12,Na 0.02-0.07,and Al the rest .the process includes steps as follows: melt, de-sludge and de-airing, make body, milling, first anneal, hot press, cold press, second anneal, stamp to open the sew, tension.

The invention discloses a device and a method for measuring dissolution heat of a high-mechanical sensitiveness energetic material. The problem that dissolution heat cannot be measured or cannot be accurately measured due to a dangerous accident caused by operations such as puncture and impact when the dissolution heat of the high-mechanical sensitiveness energetic material is measured by using a conventional calorimeter is solved. According to the device, the energetic material is contained in a sample tank, a solute is dissolved in a solvent by virtue of centrifugation and infiltration actions after stirring by using a motor, the sample and the reference heat difference are transmitted to a recorder by virtue of a sensor, and the recorder records a heat change signal in a heat flow form. The method for measuring the dissolution heat of the high-mechanical sensitiveness energetic material, disclosed by the invention, comprises six steps. The device and the method disclosed by the invention can be used for measuring the dissolution heat of the energetic material by using the calorimeter, the uniform stirring can be realized, the dangerous operations such as the puncture and the impact are avoided, the risk in the test process is reduced, and the accuracy of testing data is improved.

The invention discloses an energy-absorbing collision-resistant road guardrail for a smart city, and particularly relates to the field of smart cities, the energy-absorbing collision-resistant road guardrail comprises a mounting stand column and a wave-shaped protective guard, the surface of the mounting stand column is fixedly sleeved with a fixed sleeve seat, a supporting connecting seat is fixedly mounted on the inner side of the fixed sleeve seat, and a collision energy-absorbing mechanism is fixedly mounted on the top surface of the supporting connecting seat; deformation connecting lug bases are fixedly installed on the inner sides of the waveform protective fences, top connecting bases are fixedly installed on the inner sides of the deformation connecting lug bases, and the outer sides of the collision energy absorption mechanisms are fixedly sleeved with protective layers. By arranging the deceleration buffer mechanism, redirection of vehicle collision is achieved through rotation of the vehicle accidental collision energy absorption mechanism, kinetic energy of the vehicle is slowly reduced through rotation friction of the collision energy absorption mechanism of the vehicle and the guardrail, and high temperature and sparks are prevented from being generated during friction through the protective layer structure on the outer side; accidents of vehicle fire disasters and explosion are eradicated, and the safety performance of the protective fence is improved.

The invention belongs to a preparation method of an explosion-suppressing material. The explosion-suppressing material comprises the following chemical compositions by weight percent: 0.3-0.5 percent of Si, 0.1-0.3 percent of Fe, 0.15-0.25 percent of Cu, 1.0-1.5 percent of Mn, 1.0-1.5 percent of Mg, 0.1-0.3 percent of Zn, 0.15-0.25 percent of Ti, 0.03-0.06 percent of La, 0.05-0.09 percent of Ce and the balance Al. A grain structure of the explosion-suppressing material is refined by adopting a repeated heating forging and pressing method. The explosion-suppressing material provided by the invention has excellent extrusion resistance, collapse prevention, zero dreg-falling and high-strength explosion-suppressing property. The performance indexes of the explosion-suppressing material, such as strength, plasticity, fracture toughness and fatigue resistance, are greatly increased according to the preparation method; the technology is simple and is easily performed; and the service life of the explosion-suppressing material is prolonged.

The invention provides a fuel mode switching system for a double-fuel locomotive and a switching method of the fuel mode switching system. The double-fuel locomotive comprises an engine, an engine electronic injection controller and an LNG tank. The switching system comprises a liquid supply cut-off valve, a gasifier, a safety valve, a gas inlet electromagnetic valve, a blow off valve, a methane detection system and a locomotive microcomputer. By means of the fuel mode switching system for the double-fuel locomotive and the switching method of the fuel mode switching system, safety guarantee control over the double-fuel locomotive is achieved, and safety of the mode switching of the double-fuel locomotive is improved to a great extent.

The invention discloses an automatic energy-storage emergency system for multiple guns, which relates to the technical field of gas energy storage, in particular to an automatically controlled emergency energy storage system of tank pressure. The system comprises a protective water tank, wherein an energy storage tank is fixedly installed in the protective water tank, an air bag is arranged in the energy storage tank, and air pressure sensors are installed on both sides at the upper end of the air bag. Water level sensors are installed on both sides at the lower part of the energy storage tank. One end of the energy storage tank is provided with an inflation valve at the top, while the other end of the energy storage tank is provided with a water outlet, and a water inlet tube is arranged at the bottom of the energy storage tank. The water inlet tube is connected to a water storage pool through a valve and a water suction pump. The water outlet is connected with the water valve and connected with the water outlet tube and a diverter connected with the water valve. The diverter is respectively connected with four high pressure water guns through a one-way valve. The air pressure valves, the water level sensor, the water suction pump, the valve and the water valve are electrically connected with a control box, respectively. The automatic energy-storage emergency system for multiple guns provided by the invention is scientific and reasonable in design and low in cost, and stores a pressure energy by means of a pressure balance principle inside and outside the air bag so as to provide backup storage energy for high pressure washing operation.

The invention discloses a blasting excavation method for a side slope rock mass with deep fissures. The method comprises the steps of drilling holes and obtaining the distribution of joint fissures, dividing each blast hole penetrating through the fissure area into a lower coupling charging section, a fissure area weakening charging section and an upper conventional charging section according to the distribution of the fissure area in the blast holes, charging the blast holes in a segmented mode, plugging the blast holes, and detonating in a networking mode. The blast holes with joint fissurescommunicated with one another are detonated in a segmented and networking mode in areas, the other blast holes are detonated in a conventional networking mode, and each hole adopts hole-bottom detonation. According to the invention, segmented charging is adopted, the charging is weakened in the fissure area, gaps between explosive cartridges and blast hole walls are filled with rock debris, and adetonation gas can be prevented from leaking too early through the joint fissures, so that the pressure peak value and the duration time of the detonation gas can be increased, and the gas wedge effect of the detonation gas can be brought into full play; and the blast holes with joint fissures communicated with one another are detonated in a grouping and networking mode in areas, so that the adverse effect of the first detonating blast holes on the later detonating blast holes through the joint fissures can be avoided, and the occurrence of an explosion rejection accident is avoided.

The invention relates to a method for safely preparing fireworks chemical by a boiling granulating process and belongs to the field of fireworks. The method disclosed by the invention comprises: placing raw materials weighed in a firework chemical mixing ratio in a closed container, adding potassium bichromate with a particle size of less than 80 meshes in an amount which is 1 to 3 percent based on the total mass of the chemical; mixing by an air flow at a rate of 1 to 2m/s till uniformness; atomizing and spraying aqueous solution of cooked sticky rice powder into the closed container, and preparing the atomized solution of adhesive and the chemical in the closed container into granular chemicals by using an air flow at a rate of 1 to 2m/s and at a temperature ranging from room temperature to 60 DEG C, and drying to obtain the firework product. In the invention, the dose of the additive is small, the addition and granulation processes are simple, and the blast accidents caused by heat accumulation is avoided. Meanwhile, the prepared chemical particles are uniform, the freerunning property is high, dust is prevented, and the explosion stability of the firework products made by the chemical particles is higher.

The invention discloses a sludge harmless condensation greening bag and a method. The greening bag comprises a waterproof bag body, which is communicated with a sludge inlet pipe; a filtering box bodyis fixed on the inner wall of the waterproof bag body; a plurality of water holes are formed in the surface of the filter box body; a gravel filtering layer and an activated carbon filtering layer are fixed in the filtering box body; the activated carbon filtering layer is located on the inner side of the gravel filtering layer; the filtering box body is communicated with a water outlet; at leastone green plant transpiration area is paved on the upper surface of the waterproof bag body and comprises a covering film, a biological capsule and a degradable permeable layer at the bottom, a breathable covering film layer is arranged above the degradable permeable layer, and a water retention layer is arranged between the degradable permeable layer and the breathable covering film layer; the biological capsules penetrate through the breathable film covering layer and are inserted into the water retention layer. The greening bag is simple in structure and convenient to use, the problem thatthe surrounding environment is easily polluted in the sludge treatment process is solved, meanwhile, green plant treatment on the ground is achieved, and in addition, underground water pollution caused by sewage seepage in sludge is also prevented.

The invention discloses a spiral pipe jacket type axial reactor. The spiral pipe jacket type axial reactor is characterized in that an upper seal head and a lower seal head are respectively fixedly arranged at the top part and bottom part of a cylinder body; a spiral heat exchange pipe is distributed in the axial direction of the cylinder body; an upper flat pipe plate header is communicated withthe water drain end of the spiral heat exchange pipe, and a lower flat pipe plate header is communicated with the water intake end of the spiral heat exchange pipe; the upper flat pipe plate header iscommunicated with a water collecting box, and the lower flat pipe plate header is communicated with a water distribution box; the upper flat pipe plate header and the lower flat pipe plate header arerespectively supported at the upper part and lower part of the cylinder body; both ends of a center fixed cylinder are respectively fixedly arranged on the upper flat pipe plate header and the lowerflat pipe plate header; a water jacket inner plate is covered onto the spiral heat exchange pipe along the outer wall of the spiral heat exchange pipe; a water jacket space is formed between the waterjacket inner plate and the cylinder body and is used for water to flow. The spiral pipe jacket type axial reactor has the advantage that by adopting the water jacket and spiral heat exchange pipe combination scheme, the whole catalyst bed layer can be uniformly cooled without overtemperature coking.

The invention discloses an anti-collision protection type traffic signal lamp pole for a smart city, and particularly relates to the field of smart cities, the anti-collision protection type traffic signal lamp pole comprises a signal lamp vertical rod, an equipment cross rod and a signal lamp body, one end of the equipment cross rod fixedly sleeves the surface of the signal lamp vertical rod, and a tuning damping ball head is fixedly mounted at the top end of the signal lamp vertical rod; the surface of the signal lamp vertical rod is rotationally sleeved with an anti-collision bracket mechanism, and a plurality of energy absorption guide roller mechanisms are rotationally installed on the inner side of the anti-collision bracket mechanism. According to the scheme, the signal lamp pole is provided with the anti-collision guide structure, vehicle collision is reguided through rotation of the collision energy-absorbing guide roller mechanism when a vehicle accidentally collides with the vehicle, and the energy-absorbing guide roller mechanism is driven by collision of the vehicle and the energy-absorbing guide roller mechanism to conduct damping friction rotation to slowly absorb kinetic energy of the vehicle; and the damping speed reduction mode enables the speed reduction and energy absorption effects to be smoother, prevents personnel vibration injury caused by overlarge speed reduction inertia of the vehicle body, and achieves collision protection.

The invention relates to a device for guiding out static electricity of a floating-roof oil tank through a soft seal. The device comprises a wrapping tape, a soft sealed packet and filling liquid, wherein the soft sealed packet is fixed between a bottom pressing plate and a top pressing plate through the wrapping tape, and the wrapping tape is fixed to a floating roof which is provided with a floating roof surface; the other side of the wrapping tape makes contact with the tank wall. The probability that because spark discharge happens to a conductive plate and the tank wall during a lightning strike, a blast accidents is caused is eliminated, and the floating-roof oil tank is protected against electrostatic and lightning strike blast accidents.

The invention relates to the field of organic chemical synthesis, and discloses a reaction device for preparing isobutyric acid, which comprises a reaction kettle (1), a liquid feeding pipe (2) and agas feeding pipe (3) arranged on the reaction kettle (1), and a discharging pipe (4) arranged at the bottom of the reaction kettle (1), and is characterized in that the liquid feeding pipe (2) is communicated with an atomizing unit (5) arranged in the reaction kettle (1); the atomizing unit is used for atomizing a mixed solution of introduced iso-butyraldehyde and water; the gas feeding pipe (3) is used for introducing oxygen-containing gas; and the discharging pipe (4) is used for discharging liquid at the bottom of the reaction kettle. The reaction device provided by the invention can effectively avoid the occurrence of burning explosion accidents in the isobutyric acid preparation process, and meanwhile, the atom economy of the reaction is improved, the reaction speed is increased, andthe energy consumption is reduced.