67results about How to "Prevent detonation" patented technology

The invention discloses a vehicle oiling control method. The method includes the steps of detecting whether a vehicle is in an oiled state at present or not, and if yes, sending a start forbidding instruction to the vehicle so that the vehicle can be controlled to be in a flameout state when oiled according to the received start forbidding instruction. The invention further provides a vehicle oiling control system. The technical problem that the vehicle is high in dangerousness when oiled is solved.

A combustor fire cover comprises an annular inner ring wall face, an annular outer ring wall face and a cover body located above the inner ring wall face and the outer ring wall face, wherein the inner ring wall face and the outer ring wall face are concentrically arranged in a spaced mode. The outer ring wall face is provided with fire holes and small fire holes, wherein the fire holes are evenly distributed in the circumferential direction of the outer ring wall face at intervals and penetrate through the outer ring wall face in the thickness direction, and the small fire holes and the fire holes are arranged in a vertical spaced mode. A partition plate is arranged between the inner ring wall face and the outer ring wall face, the space defined by the inner ring wall face, the outer ring wall face and the cover body is partitioned into a first cavity and a second cavity, the fire holes are located in the first cavity, the small fire holes are located in the second cavity, the partition plate is provided with holes to enable the first cavity and the second cavity to be communicated, the first cavity is communicated with an external gas mixing room, and fuel gas enters the second cavity from the first cavity through the holes. By means of the combustor fire cover, extinction caused when big fire and small fire are switched or detonation caused when fire is extinguished or the like can be prevented, the phenomena of floating flames and blow-off of the fire holes of the fire cover can be prevented, and the combustor fire cover is of a detachable structure and is convenient to clean.

The invention relates to a vehicle intelligent fire-proofing and early warning decision method and a vehicle-loaded fire fighting system. The vehicle-loaded fire fighting system comprises a microcontroller-based embedded processor which is connected to an alarm light, a buzzer, an emergency button, a display, relays (connected to extinguishers), a gyroscope, a temperature sensor, a CAN interface (connected to a display module and an environment monitoring module). By monitoring the temperature, vehicle distance, relative vehicle speed, vehicle body acceleration, and roll angle in the vehicle running process, an abnormal state recognition and early warning method is established. The method consists of the steps of: first judging whether the temperature is abnormal, then judging whether a rollover risk exists, and judging whether a crash risk exists. When any of the above cases emerges, the relays can be connected, and each relay can detonate the extinguishers in order, so as to realizeactive prevention and intelligent extinguishment for once outbreak of a fire and twice fire accidents, thus guaranteeing people and vehicle security. The system of the invention is an advance prevention measure and has better practical applicability than previous subsequent remedies, as well as can improve the timeliness and reliability of extinguishment in an early stage.

The invention discloses a controllable safety training grenade, which comprises a grenade body, a control unit for locating the falling point of the grenade and controlling the detonation of the grenade is installed in the grenade body, and the control unit is installed in the grenade In the cavity of the body, the control unit is connected with the explosive in the grenade body. By setting the control unit in the grenade body and combining the wireless signals sent by the reference nodes pre-arranged in the grenade training throwing field to calculate the location of the grenade, the location of the grenade will be obtained. position, the grenade will be detonated. If it is detected that the grenade has not fallen to a safe position, the control unit will cut off the power supply to prevent the grenade from detonating. The invention has the advantages of not only ensuring the training effect, but also preventing potential safety hazards caused by the grenade falling too close to the grenade and accidental injury caused by the phenomenon of accidental injury caused by the grenade dropping or throwing by mistake.

The invention discloses a small in-bore environment-sensitive mechanism. According to the invention, under falling overload, movement generated by stress of a firing pin seat 3 in a falling process isisolated through constraint of an inertia block 2 on the firing pin seat 3 when the inertia block 2 moves downwards in the falling process, and the situation that the firing pin seat 3 and a firing pin 4 on the firing pin seat 3 move downwards under the falling overload to detonate a needle-punched detonator 6 is prevented. Under a long-time low-overload launching condition, the inertia block 2 moves downwards to the end and then relieves constraint on a steel ball 8, the firing pin seat 3 continues to bear a downward overload force, the steel ball 8 embedded into a groove 31 of the firing pin seat 3 is extruded into an empty cavity in a step 21 of a heavy block 2, and therefore constraint on the firing pin seat 3 is relieved, and the firing pin seat 3 continues to bear the downward overload and impacts and detonates a needle-punched cap 6. The radial size of the mechanism is reduced through the semi-cylindrical design of the inertia block and the firing pin seat which are restrainedin sequence, and the axial size is reduced through parallel installation for the inertia block and the firing pin seat and staggered layout for the firing pin and a spring. Meanwhile, the mechanism isof a sealed structure and cannot be polluted by dust in a thermal battery.

The invention discloses a metal casting blank continuous manufacturing device and method capable of providing pressure casting. The metal casting blank continuous manufacturing device comprises a smelting furnace, a crystallizer, a pushing-in mechanism, a pulling mechanism and a control system. The smelting furnace comprises a shell and a crucible arranged in the shell. A smelting cavity is formedin the crucible. The side wall of the crucible is sleeved with a thermal insulating layer. Electromagnetic heating rings and water cooling pipes are wound around the thermal insulating layer alternately. A discharge pipe is arranged on the lower portion of the crucible. One end of the discharge pipe communicates with the smelting cavity. The other end of the discharge pipe sequentially penetratesthrough the wall of the crucible and the wall of the shell and then communicates with a feed inlet of the crystallizer. The pulling mechanism is located behind a discharge outlet of the crystallizer,thereby being used for pulling a metal casting blank. The pushing-in mechanism is arranged in the smelting cavity, thereby being used for pushing smelted materials into the discharge pipe. An electromagnetic heating controller, a water chiller, the crystallizer, the pushing-in mechanism and the pulling mechanism are in control connection with the control system. The casting blank quality of the metal casting blank during continuous casting can be promoted effectively.

The invention discloses a multichannel electromagnetic interference gun for countering remote control bombs and unmanned aerial vehicles. The multichannel electromagnetic interference gun comprises agun body, a gunstock and at least one antenna, the antenna is fixedly arranged directly in front of the gun body. A device signal source and an independent power supply cabin are arranged in the gunstock, the independent power supply cabin comprises a power supply module, the power supply module is electrically connected to the device signal source, the device signal source is provided with a debugging and downloading interface. A cooling fan, a multiplexer and a plurality of power amplifiers are arranged in the gun body, the cooling fan is arranged at a front end of the gun body, an input endof the power amplifier is electrically connected with an output end of the device signal source, the output end of each power amplifier is directly connected with the corresponding antenna, or is connected with the corresponding antenna through the multiplexer. The invention discloses the multichannel electromagnetic interference gun for countering remote control bombs and unmanned aerial vehicles, which is hand-held, miniaturized, low in power consumption, reconfigurable in bandwidth and multifunctional integrated, and can meet the application requirements of most countries and regions in the world in the fields of countering remote control bombs and unmanned aerial vehicles.

The invention relates to the field of electrical connection, in particular to an explosion-preventing electrical connector. The explosion-preventing electrical connector comprises an electrical connector shell, wherein an insulation body is arranged in an inner cavity of the electrical connector shell, a contact element installation hole is formed in the insulation body and is used for installing a contact element, the contact element is arranged in the contact element installation hole, a contact element explosion-preventing surface is arranged on a peripheral surface of the contact element and extends along an axial direction of the contact element, a contact element installation hole explosion-preventing surface is arranged on the hole wall of the contact element installation hole and extends along the axial direction of the contact element installation hole, the contact element explosion-preventing surface and the contact element installation hole explosion-preventing surface are in clearance fit to form a contact element explosion-preventing gap extending along the axial direction of the contact element by a first preset length. The contact element explosion-preventing gap can be used for reducing energy generated by explosion, and an explosion prevention effect is achieved; the contact element and the contact element installation hole in the insulation body are in clearance fit during installation, and the contact element is disassembled to be maintained or replaced once damaged; and the explosion-preventing electrical connector can be used in a press wire type cable product, and the application range of the explosion-preventing electrical connector is expanded.

The invention discloses a plug-in type gas blaster. The plug-in type gas blaster comprises an inner tube, an inner tube filling cavity, an ignition mechanism, an inner tube gas inflation mechanism and an outer tube. The inner tube is internally provided with the inner tube filling cavity. A first sealed inner cover and a second sealed inner cover are connected to the two ends of the inner tube in a sealed manner correspondingly. The outer tube is arranged on the outer layer of the inner tube. A first sealed outer cover and a second sealed outer cover are connected between the inner tube and the outer tube in a sealed manner. The ignition mechanism and the inner tube gas inflation mechanism are mounted on the first sealed inner cover or the second sealed inner cover. The first sealed outer cover or the second sealed outer cover is provided with an outer tube gas inflation mechanism. A seal cavity formed between the inner tube and the outer tube is an outer tube filling cavity. The inner tube filling cavity is filled with supercritical oxygen and carbon-containing organic matter. The outer tube filling cavity is filled with liquid matter easy to gasify such as liquid carbon dioxide or liquid nitrogen. The plug-in type gas blaster has the beneficial effects of being low in manufacturing cost, high in reaction material mixing uniformity, high in heating efficiency, good in transportation safety and high in blasting power.

The invention discloses an explosion-proof lead-acid storage battery, which comprises a battery container, a battery cover, plate groups, an electrolyte, exhaust bolts and safety pads, wherein the battery cover is a single-layer cover; the battery container and the batter cover are formed by high-tenacity PP plastic in an injection molding manner and are bonded together in a heat sealing manner; the plate groups are connected with one another in series in a through the partition (TTP) welding manner; each exhaust bolt is hermetically fixed to a liquid filling hole of the battery cover via a thread; and each safety pad is arranged at the upper part of each plate group, and floats on the surface of the electrolyte under each liquid filling hole. The explosion-proof lead-acid storage battery can effectively filter an acid mist, and can prevent an external fire source from detonating the battery, and the damage degree to the battery caused by internal sparks is significantly lowered, and the explosion-proof lead-acid storage battery can prevent the electrolyte from overflowing, prevents external dust from affecting use of the storage battery, and can effectively prevent fragments formed after a storage battery housing detonates from hurting people.

The invention relates to the technical field of permanent magnetic eddy current transmission and especially relates to an explosion-proof low-noise permanent magnet coupler. The explosion-proof low-noise permanent magnet coupler is characterized in that the explosion-proof low-noise permanent magnet coupler comprises an active hub, which is an integrated structure formed by a shaft sleeve body, asteel disc body and an external circular sleeve body, wherein the inner side of the steel plate body is connected with a conductor disc 1; after the external circular sleeve body is connected with a load-end steel disc, a semi-closed space, opened to the axis direction, is formed between the steel disc body and the load-end steel disc; and the inner side of the load-end steel disc is connected with a conductor disc 2. The explosion-proof low-noise permanent magnet coupler also comprises a load hub, which comprises a flange and a sleeve. After the active hub and the load hub are combined, a magnetic rotor disc is arranged in the semi-closed space. The outer sides of the steel disc body and the load-end steel disc are respectively provided with a mute ring belt. The cross section of the mutering belt is shaped like an arc or a trapezoid, the inner side of which is narrow and the outer side of which is wide. The shaft sleeve body, the steel disc body and the external circular sleeve bodycan be in a combined connection structure; and compared with the prior art, the explosion-proof low-noise permanent magnet coupler has the advantages of 1) good explosion-proof performance; 2) good heat radiation and noise reduction effect; and 3) matching various specifications and types of water pumps and fan loads.

The invention discloses a tunneling machine cutting trace planning system and method. The system comprises an image acquisition module, a data processing module and a control module, wherein the imageacquisition module, the data processing module and the control module are mounted on a tunneling machine main body. The trace planning method comprises the following steps: modeling on the basis of an orthohexagonal grid method, and dividing an area to be cut into a plurality of orthohexagonal grid units of an identical size with binary value information; dividing an ideal area into a plurality of free area units which are overlapped with one another by using a unit division method with obstacles as boundaries, and representing transferring of one area unit to another area with adjacent images; calculating planning of an optimal route by using an algorithm. By adopting the system, a tunneling machine cutting head can automatically avoid dirt bands in the tunnel cutting process, cutting tooth abrasion can be reduced, the service life of each cutting tooth can be prolonged, the cutting speed can be increased, the cutting efficiency can be improved, and conditions are provided for automatic and efficient operation of a tunneling machine.

The invention discloses a capacitor test circuit. The circuit comprises a constant-current source circuit, a voltage comparison circuit and a sampling timing circuit; the constant-current source circuit is used for generating constant charging current to charge a capacitor to be tested; the voltage comparison circuit is used for acquiring the output voltage of the capacitor to be tested, and outputting control signals when the output voltage is greater than a preset first voltage and smaller than a preset second voltage, wherein the control signals are used for triggering the sampling timing circuit to generate sampling signals; and the sampling timing circuit is used for recording the lasting time of the sampling signals, and calculating the capacitance value of the capacitor to be testedaccording to the charging current, the difference value of the second voltage and the first voltage, and a timing result. According to the capacitor test circuit of the present invention, the first voltage, replacing a zero voltage, is adopted as the initial value of the start of timing, and therefore, test errors caused by a condition that a voltage zero position is susceptible to interference can be eliminated, and the accuracy of test results can be improved.

The invention relates to the technical field of lamp lighting equipment, and discloses an explosion-proof and energy-saving LED lamp. The explosion-proof and energy-saving LED lamp comprises an LED lamp body; the top end of the LED lamp body is fixedly provided with an explosion-proof triggering mechanism; the periphery of the LED lamp body is coated with a protective shell; the inside of the protective shell communicates with the inside of the explosion-proof triggering mechanism; the top of the outer surface of the explosion-proof triggering mechanism is fixedly provided with a heat dissipation mechanism; the bottom end of the heat dissipation mechanism penetrates through and extends to an inner cavity of the protective shell; and a wiring terminal is arranged in the middle of the top end of the explosion-proof triggering mechanism. According to the explosion-proof and energy-saving LED lamp, through the arrangement of the protective shell, the LED lamp body can be completely coatedin the inner cavity of the protective shell to isolate explosive gas and explosive dust from the LED lamp body so as to prevent the explosive gas and the explosive dust from being ignited or detonateddue to electric sparks generated by work of electronic components inside the LED lamp body; and therefore, the reliability and safety of the explosion-proof LED lamp are effectively improved.

The invention relates to a pile foundation construction method of a large angle bevel hard rock stratum. The pile foundation construction method of the large angle bevel hard rock stratum includes thefollowing steps that a blast hole position is determined on a large angle bevel of the hard rock stratum; a diving drill is used for drilling a hole in the blast hole position to form the blast hole;a sleeve is provided, and is placed in the blast hole; a detonating cartridge is provided, and a lead led out of the detonating cartridge is bound on a thread rope; the detonating cartridge is installed at the bottom of the corresponding blast hole through the sleeve, and filling is performed on the blast hole; the lead is pulled out through the thread rope and is connected with a detonating net,and the detonating cartridge in the blast hole is detonated through the detonating net, so that the large angle level of the hard rock stratum can be exploded flat to form a gentle face; and a pile foundation is constructed on the gentle face through a percussion drill. By means of a vertical shaft type full cross section micro difference detonating method, the large angle hard rock stratum is broken to form the gentle face, and the problem of eccentric drilling of the large angle bevel hard rock stratum can be effectively solved.

The invention discloses an automatic packaging system for cherry bomb machining. The automatic packaging system comprises a cherry bomb feeding device, a bubble cap forming device, a bubble cap sealing device, a bubble cap cutting device and a bubble cap packaging device, wherein the bubble cap forming device, the bubble cap sealing device and the bubble cap cutting device are arranged on a machine body; and the bubble cap forming device is arranged at the left end of the machine body and comprises an unwinding mechanism, a forming mechanism and a first conveying mechanism, the unwinding mechanism comprises an unwinding roller and a rotating rolling shaft, the forming mechanism comprises a preheating station a stamping station, the first conveying mechanism is arranged at the right end of the stamping station, and a mounting frame is arranged on the first conveying mechanism. According to the automatic packaging system, firstly, bubble caps are machined, cherry bombs are fed, arranged, sequenced, guided and conveyed, sandy soil and dust are removed in the process, a vacuum air pump is adopted to suck the cherry bombs into the bubble caps through a soft or elastic suction head, then the bubble caps are sealed and cut, the bubble caps are boxed, manual packaging is replaced, the packaging efficiency is high, the packaging process is safe, and automatic packaging in cherry bomb machining is realized.

The invention relates to a protection method for preventing an initiating explosive device of a docking mechanism from being detonated beforehand. The protection method comprises the following steps: (1) when dowel pin holes are formed for the initiating explosive device and a product after the initiating explosive device is assembled, anti-static grounding process cables are adopted to enable a drilling machine and the product to be synchronously and effectively grounded, and the periphery of the product is wrapped by an anti-explosive blanket; and (2) when the environment test and the performance test are performed for the initiating explosive device and the product, an anti-static grounding process cable is adopted to enable the initiating explosive device to be effectively grounded. The protection method solves such problems as advanced detonation of the initiating explosive device due to improper protection measures and improper operation in such items as formation of the dowel pin holes, the environment test and the performance test for the initiating explosive device and the product after the assembly of the initiating explosive device. The product, obtained through the method, has stable quality, high reliability and proper protection measures.

The invention belongs to the technical field of safety engineering and provides a lithium ion battery safe storage box with a fire blast product automatic collecting device. The invention aims to solve the problem that the environment is harmed by toxic and harmful gas generated by a fire blast accident in lithium battery transportation and storage in the prior art. The device comprises a fire detector, a sound-light alarm device, a control unit, a gas collecting and storing deice, a pressure relief device and a box body. The box body comprises an upper box cover and a lower box shell. The upper box cover and the lower box shell are movably connected. The gas collecting and storing device comprises a micro vacuum pump and a gas storage cylinder connected in parallel. The gas collecting andstoring device is fixed in the upper box cover. The fire detector and the control unit are connected to the gas collecting and storing device in series. The safe storage box can prevent toxic and harmful gas generated by combustion or explosion of the lithium battery in storage or transportation processes from being directly discharged to the atmosphere, so that the risk of air pollution and poisoning of staff is reduced, and the safety storage box has the advantages of being full-automatic, alarming in an out of control state, inhibiting in an out of control state and the like.