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59 results about "Pyrotechnics" patented technology

Pyrotechnics is the science and craft of using self-contained and self-sustained exothermic chemical reactions to make heat, light, gas, smoke and/or sound. The name comes from the Greek words pyr ("fire") and tekhnikos ("made by art"). Pyrotechnics includes, among other things, fireworks; safety matches; oxygen candles; explosive bolts and other fasteners; parts of automotive airbags; and gas-pressure blasting in mining, quarrying, and demolition.

Life evaluation method suitable for initiating explosive material in temperature and pressure dual-stress environment

The invention relates to a life evaluation method suitable for an initiating explosive material in a temperature and pressure dual-stress environment, and belongs to the technical field of initiating explosive devices. According to the method, by establishing the temperature and pressure dual-stress accelerated aging test method for the initiating explosive material, a mathematical model adaptation method is adopted to research the performance degradation law of the initiating explosive material in the temperature and pressure environment, and a pre-estimation model of the storage life in the temperature and pressure environment is established; the storage life data of the initiating explosive material in the temperature and pressure environment is obtained, the reliability analysis of the initiating explosive material in the temperature and pressure dual-stress environment is more comprehensive and accurate, and the method is suitable for the reliability analysis of various initiating explosive materials in the temperature and pressure dual-stress environment; and corresponding data basis and theoretical basis are provided for storage environment requirements and working reliability of initiating explosive devices.
Owner:BEIJING INST OF TECH +1

Automatic feeding and discharging system of initiating explosive device curing oven

An initiating explosive device curing oven automatic feeding and discharging system comprises an oven, a skip car, an AGV trolley and a control system. A positioning tool for positioning the skip car is arranged at the bottom of the inner cavity of the oven; one side of the skip car is provided with at least one group of handles; a positioning plate matched with the positioning tool for positioning is arranged at the bottom of the skip car; the AGV trolley is provided with a navigation positioning unit and a hanging frame capable of translating and lifting along with the driving mechanism, the navigation positioning unit is used for positioning and determining the positions of the skip car, the drying oven and the AGV trolley and attitude information of the AGV trolley, and one side of the hanging frame is provided with hanging teeth capable of hooking a handle; the control system is used for sending a control instruction according to the starting instruction and the position and posture information returned by the navigation positioning unit, and controlling the moving track of the AGV and opening and closing of a drying oven door of the drying oven. For a production site of an initiating explosive device dangerous area, due to unmanned and automatic whole process, the man-machine isolation safety operation of a high-safety-risk working procedure of charging and discharging of the skip car is realized, the intrinsic safety of the process is improved, the safety risk is reduced, and the production efficiency is improved.
Owner:HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY

Miniature high output capacity non-detonating electric ignition tube

The utility model discloses a kind of micro high-output capacity's insensitive electric ignition tube, belong to the technical field of pyrotechnics, including shell (1), in the shell (1) from below to above sequentially provided with insulating sheet (8), electrostatic discharge ring (7) and electrode plug (6), the two pins (61) of the electrode plug (6) from the lower end of shell (1) stretch out shell (1) outside, the upper end surface of the electrode plug (6) is provided with bridge wire (5), the bridge wire (5) is communicated with two pins (61), the upper end surface of electrode plug (6) is provided with charge ring (4), in the charge ring (4) is provided with ignition powder (3), in the upper end surface of the ignition powder (3) is provided with cover sheet (2);The utility model makes the insensitive scheme that satisfies in GJB344A-2020 under the size frame as small as possible, simultaneously has enough big output capacity.
Owner:SICHUAN BLUE LION TECH CO LTD

Underwater pin pulling device

The utility model relates to the field of initiating explosive devices, and discloses an underwater pin pulling device which comprises a shell, a fixing pin, a piston, a lock cover, a buffering sleeve, first sealing rings, an exploder and a one-way sealing assembly, the cross section of the piston is arranged in a shape like a Chinese character'zhong 'and is connected in an inner cavity of the shell in a sliding mode, and the peripheral side of the piston is sleeved with the first sealing rings; the working end of the fixing pin is connected with the piston in an inserted mode, two air guide channels are reserved in the piston, the exploder is in threaded connection to the bottoms of the air guide channels, the one-way sealing assembly is in threaded connection to the tops of the air guide channels, the small-diameter end of the bottom of the piston is sleeved with the buffering sleeve, and the outer wall of the buffering sleeve is arranged in a taper angle mode. The lock cover is in threaded connection with the opening end of the bottom of the shell, a circular-truncated-cone-shaped groove is formed in the lock cover, and the large-diameter size of the circular-truncated-cone-shaped groove is matched with the small-diameter size of the buffering sleeve. The waterproof performance of the device is effectively improved, and meanwhile, the stable operation of the device is ensured by adopting the arrangement of the double exploders.
Owner:TAIYUAN INST OF TECH

Agile aircraft initiating explosive device online adaptive health detection system and detection method

The invention relates to an on-line self-adaptive health detection system and method for initiating explosive devices of an agile aircraft, and belongs to the technical field of on-line detection of spaceflight electronic systems. Comprising a constant current source, an integrated computing power center, a reusable detection link and an ignition loop, wherein the integrated computing power center comprises a sequential logic control algorithm module and a data estimation module; the reusable detection link comprises an analog switch 1, an isolation optocoupler, a multi-choice analog switch, a voltage following module, an isolation operational amplifier module, a differential operational amplifier module and an AD acquisition module; the ignition loop comprises an initiating explosive device to be detected; according to the invention, the problems of poor precision, complex hardware, low test efficiency and the like of a traditional single-path voltage measurement method are solved, and the test coverage, safety and application reliability of the agile aircraft are improved.
Owner:SHANGHAI AEROSPACE CONTROL TECH INST

Device and method for automatically rolling and assembling copper removal agent in combustible cartridge case with large length-diameter ratio

The invention relates to the technical field of automatic assembly of initiating explosive device medicament equipment, and discloses a device and method for automatically rolling and assembling a copper removal agent in a combustible cartridge case with the large length-diameter ratio, the device comprises a supporting frame, the supporting frame is placed on the ground and used for placing other mechanisms, and a copper removal agent feeding mechanism is arranged on the supporting frame; the winding and shearing module workbench and the assembly executing mechanism are arranged on the upper layer of the supporting frame; the taking and placing clamping mechanism and the feeding and discharging mechanism are arranged on the lower layer of the supporting frame; by integrating the five core advantages of rapid feeding and discharging, high-precision automatic winding and shearing, automatic assembling, coaxial conveying and automatic disassembling and assembling and aiming at the characteristics that the length-diameter ratio of the large-length-diameter-ratio combustible cartridge is too large, the pipe wall is prone to deformation, and the structure is prone to damage, coaxial positioning operation and flexible process installation are adopted, full-process automation of winding and assembling is achieved, and the production efficiency is improved. The problems of poor manual operation consistency, uncontrollable quality, low efficiency, insufficient safety protection and the like in the prior art are solved.
Owner:LIGHT INDAL XIAN MECHANIC DESIGN RES INST

Automatic opening and closing cover and multi-box-cover temporary storage equipment

The utility model belongs to the technical field of automatic box opening machinery, and particularly relates to an automatic opening and closing cover and multi-box-cover temporary storage device. Comprising a cover opening and closing transfer assembly, a multi-box-cover temporary storage assembly and a carrying table. The cover opening and closing transfer assembly comprises a cover opening and closing device, a multidirectional transfer device and a fixed rack, the fixed rack stretches across the multi-box-cover temporary storage assembly and the carrying table, the multidirectional transfer device carries the cover opening and closing device with the fixed rack as a support to move between the multi-box-cover temporary storage assembly and the carrying table, and the cover opening and closing device comprises a pneumatic suction cup and a pneumatic finger. A self-locking buckle of the turnover box is triggered through a pneumatic finger, and a box cover of the turnover box is grabbed through a pneumatic suction cup; according to the automatic cover opening and closing and multi-box-cover temporary storage equipment, the problem of positioning consistency of a plurality of turnover boxes in the transferring and cover opening and closing process is solved; the automatic cover opening and closing operation of the initiating explosive device turnover box is achieved, and potential safety hazards existing in the cover opening and closing operation are reduced.
Owner:SHANXI DIMAI WOKE PHOTOELECTRIC IND CO LTD

Solid-state low-power-consumption high-precision insulation resistance test circuit

The utility model discloses a solid-state low-power-consumption high-precision insulation resistance test circuit which comprises a high-voltage access circuit, a voltage acquisition and amplification circuit, an A / D converter, an embedded microprocessor and an RS485 bus interface module, the high-voltage access circuit is provided with a high-voltage optocoupler circuit, the voltage acquisition and amplification circuit is connected with a loop to be tested, and the A / D converter is connected with the embedded microprocessor. The A / D converter is connected with the voltage acquisition and amplification circuit, the embedded microprocessor is connected with the A / D converter and the high-voltage access circuit, and the RS485 bus interface module is connected to the embedded microprocessor through the signal isolation driver. According to the utility model, the high-voltage optocoupler circuit is designed to replace a conventional mechanical relay, so that faults caused by contact abrasion or damage can be reduced, and the test reliability of the initiating explosive device is improved; meanwhile, the on time and the off time of the high-voltage optocoupler circuit are stable, a high-voltage source can be quickly and timely disconnected, time out-of-tolerance is avoided, and the state change of the insulation resistor can be timely and effectively detected, so that the performance test requirement of the insulation resistor is met.
Owner:XIAN DONGFENG INSTR FACTORY

A stable preparation method for synthesizing lead stephanate of type II by ammonia salt method

The present application relates to a kind of stable preparation method of type II basic lead stephanate, belong to detonating explosive, firing charge, pyrotechnics, energetic material technical field.The method described in the present application is prepared by changing reaction raw materials, optimizing synthesis process and hydrothermal reaction, to obtain type II B-LTNR product.The method avoids the generation of type I acicular B-LTNR, not only improves the physical and chemical stability of B-LTNR, reduces mechanical sensitivity, but also significantly improves its dispersibility, mixing and packing density and other application performance.Using the method can ensure the quality and application reliability of the obtained type II B-LTNR product, the obtained product has good flowability, good crystal shape consistency, high yield and other characteristics, and the process is simple and easy to operate, high safety, suitable for industrial production, has good application prospect in detonating explosive, firing charge, pyrotechnics, energetic material and other related technical fields.
Owner:BEIJING INST OF TECH

Multi-functional high integration power control and distribution internal bus system architecture

This invention provides a multifunctional, highly integrated power control and distribution internal bus system architecture, comprising: a set of DIST internal buses, with the master station located in the telemetry and remote control module, and substations distributed in various functional modules, including at least one LVDS internal bus substation; a set of CRST internal buses, with both master and slave stations located in the telemetry and remote control module, used to send charging and discharging parameter setting commands to the charging and discharging regulation module; multiple sets of internal bus extension interfaces located in the pyrotechnics and thermal control modules, used to transmit address, command enable, and pulse trigger signals, wherein the pulse trigger signal is output by the LVDS substation in the shunt regulation module, and the command enable signal is issued by the master station; and a set of motherboards to interconnect the above buses. The DIST internal bus, CRST internal bus, and internal bus extension interfaces adopt a unified timing to achieve synchronous data sampling and uploading. This invention improves the system's scalability and compatibility by being compatible with highly integrated LVDS substations and discrete hardware extension interface substations, and ensures the real-time performance of telemetry data.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY

Equipment and method for monitoring grounding state of initiating explosive device

PendingCN121348991AProgramme total factory controlGround failureMonitor equipment
The invention relates to an initiating explosive device grounding state monitoring device and method, and belongs to the technical field of initiating explosive device safety monitoring, and the device comprises N * M measurement and control combinations, N sets of measurement and control combinations and a set of main control computer, the measurement and control combination and the arrangement in a dangerous area for storing the initiating explosive devices adopt explosion-proof design, and the main control computer is arranged in a management area outside the dangerous area without adopting the explosion-proof design; each set of measurement and control combination is connected with M sets of measurement and control combinations, and the N sets of measurement and control combinations are connected to the main control computer; connecting the initiating explosive device to the corresponding measurement and control combination; the measurement and control combination obtains an in-place state by performing in-place monitoring on the initiating explosive device, and performs a grounding resistance test on the in-place initiating explosive device to obtain a grounding state signal; and the main control computer manages and controls the N sets of measurement and control combinations, receives and displays the in-place and grounding states of the initiating explosive device, judges a grounding fault and gives an alarm. The initiating explosive device safety management system has remarkable advantages in the aspect of improving the efficiency and safety of initiating explosive device safety management.
Owner:窦建清 +1

Passivated magnesium material, in particular passivated magnesium, and method for producing same

The invention relates to a method for passivating a magnesium material, comprising the step of coating the magnesium material with urea, where the magnesium material is magnesium, a magnesium alloy containing at least 50% by weight of magnesium, or a mixture of magnesium and one or more such magnesium alloys, and where the coating is carried out by mixing the magnesium material with urea particles. The invention further relates to a passivated magnesium material, in particular magnesium in the form of particles of a magnesium material, which are coated with a coating containing urea or consisting of urea, which can be obtained by said method, the invention also relates to the use of the passivated magnesium material for producing pyrotechnic, coated welding electrodes, refractory products, cored wires or desulfurizers for the desulfurization of pig iron and / or steel.
Owner:ALMAMET

Circuit substrate structure, electronic detonator control module comprising same, and electronic detonator

The utility model discloses a circuit substrate structure as well as an electronic detonator control module and an electronic detonator comprising the circuit substrate structure, and belongs to the technical field of initiating explosive devices. The circuit substrate structure comprises a body, the body is of a long-plate-shaped structure, the body is provided with a containing through groove used for containing an energy storage capacitor, the containing through groove extends in the length direction of the body, the body forms a wide-edge bridge on one side of the containing through groove in the width direction, and the body forms a narrow-edge bridge on the other side of the containing through groove in the width direction. The narrow-side bridge is arranged right opposite to the wide-side bridge, the width size of the wide-side bridge is larger than that of the narrow-side bridge, and when the energy storage capacitor is placed in the placing through groove, the energy storage capacitor is located on the inner side of the placing through groove in the horizontal direction. According to the utility model, the body forms the wide-side bridge at one side of the placement through groove, and the distance between the conductive circuit arranged on the wide-side bridge at one side of the placement through groove and the energy storage capacitor is increased, so that the size of the energy storage capacitor protruding out of the body is reduced, and the reliability and stability of the energy storage capacitor are improved.
Owner:GUIZHOU QUANAN MILING TECHNOLOGY LIMITED COMPANY

Quantitative medicine adding equipment for a pyrotechnic charge

The utility model relates to a kind of pyrotechnics grain column quantitative dosing equipment, comprising: shell and self-adapting material guide plate mechanism;Self-adapting material guide plate mechanism is set to the top of the shell, and extend to the inside of the shell.The utility model is by setting shell and self-adapting material guide plate mechanism etc., by the mutual cooperation between the shell and self-adapting material guide plate mechanism of separation type setting, so that self-adapting material guide plate mechanism can be separated from shell simultaneously, so that self-adapting material guide plate mechanism inclination angle can be adjusted, and then the effect of increasing feeder application range is realized, by the setting of self-adapting material guide plate mechanism, the effect of self-adapting is realized, so that the side of self-adapting material guide plate mechanism is still closely attached to the inner side wall of trough after the angle of self-adapting material guide plate mechanism changes, and then the powder can be contacted with self-adapting material guide plate mechanism and then guided material operation.
Owner:HUBEI HANGPENG CHEM POWER TECH

Disassembly and connection device for water electronic detonator driver and water electronic detonator initiation control system

The utility model discloses a kind of dismounting and connecting device for waterborne electronic detonator driver and waterborne electronic detonator initiation control system belong to pyrotechnics initiation control technical field.The bottom of waterborne electronic detonator driver is equipped with stop bump for installation by stop limit, stop bump is protruded to outside relative to the bottom of waterborne electronic detonator driver, and the dismounting and connecting device for waterborne electronic detonator driver includes: support structure, support structure is equipped with support portion for supporting the bottom of waterborne electronic detonator driver;Locking limiting mechanism, installed on support structure, locking limiting mechanism can lock stop bump on support structure, and locking limiting mechanism can limit the bottom of waterborne electronic detonator driver supported by support portion on support portion.The utility model is convenient for the dismounting and connecting device for waterborne electronic detonator driver to dismount waterborne electronic detonator driver.
Owner:GUIZHOU QUANAN MILING TECHNOLOGY LIMITED COMPANY

Quick clamping test tool for smoke binding post of initiating explosive device

The utility model relates to an initiating explosive device smoke binding post fast clamping test tool which comprises a substrate and a plurality of groups of detection units. The detection unit comprises a pair of elastic sheets and a display lamp which are connected in series; the elastic sheet is L-shaped and comprises a fixed part and an elastic part; the fixing part is used for being fixedly connected with the substrate, is connected with the display lamp through a wire, and enables a circuit of the to-be-tested binding post to form a closed circuit after abutting against the top of the to-be-tested binding post. The elastic part is used for abutting against the side surface of the to-be-tested binding Two elastic sheets and one display lamp are connected in series to form a detection unit of the test tool, when the tool is used for detecting the initiating explosive device trigger device, the elastic sheets can be conducted with the binding posts only by directly buckling the tool above the binding posts, and after triggering, the display lamp emits light, so that rapid detection of the initiating explosive device trigger device is realized, the detection time is greatly shortened, the cost is saved, and the detection efficiency is improved. The tool can detect the triggering number of initiating explosive devices according to the need, and the number of the elastic pieces is increased.
Owner:JIANGSU HUARU DEFENSE TECH CO LTD

Electromagnetic protection box for transportation and detection of initiating explosive devices

The utility model discloses an initiating explosive device transportation detection electromagnetic protection box, which relates to the technical field of initiating explosive device transportation and comprises a box body, a box cover arranged at the top of the box body, a waterproof edge formed by bending a metal plate at the edge of an upper side port of the box body, a water vapor sealing ring fixed on a platform at the bottom of the waterproof edge, and a conductive sealing ring fixed on the inner side of the bottom of the box cover. An observation window is installed on the box cover and is made of flexible shielding glass, grooves are formed in the left side and the right side of the box body, electromagnetic shielding sleeves extending into the box body are arranged on the grooves, side opening covers installed on the box body are correspondingly arranged on the outer sides of the electromagnetic shielding sleeves, and initiating explosive device detection work can be conveniently carried out through the observation window before use; the conductive sealing ring can abut against the waterproof edge of the upper port of the box body in a contact mode, reliable electric connection is formed, the electromagnetic protection effect is achieved, the performance stability of the initiating explosive device is improved, the probability of accidents is reduced, protection detection is conducted through the electromagnetic shielding sleeve before the initiating explosive device is used, and the quality performance of the initiating explosive device is ensured.
Owner:NAVAL AVIATION UNIV

Electromechanical servo mechanism with high reliability for forced unlocking and separation of isomerized redundancy of pyrotechnic device

The present application is aimed at the reliability of the separation mechanism and the problem of forced unlocking, and provides a high-reliability electromechanical servo mechanism for forced unlocking and separation of heterogeneous redundancy of pyrotechnics, which adopts electromechanical servo mechanism forced unlocking as a normal mode and has a reusable function, adopts pyrotechnic mechanism forced unlocking as a backup mode and has a one-time use function, and the forced unlocking mechanism is designed as a special-shaped slope sleeve matched with a shear pin shaft structure, the forced unlocking of the mechanism is realized through the "slit" structure, the pyrotechnic mechanism is designed as a slip ring electric circuit structure, the explosion separation is realized by controlling the driving motor assembly, and the overall device has compact space volume and high reliability.
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS

A device and method for testing the transient adiabatic pressure of a pyrotechnic

ActiveCN115628839BFluid pressure measurement using pressure-sensitive liquidPressure transmissionO-ring
The present application relates to a kind of pyrotechnics transient adiabatic pressure testing device and method.Utilize pressure measuring bomb to gather the output energy of pyrotechnics, form initial pressure;Utilize piston rod and hydraulic medium to realize the transient adiabatic of pressure sensor and pyrotechnics pressure transmission;Select suitable pressure sensor to obtain pressure signal, the inherent frequency of pressure sensor meets the frequency characteristic demand of test system;According to pressure test precision needs and O ring friction force calculation formula, select O ring;Design reasonable exhaust hole, exclude the air component in pressure medium, so that pressure medium meets Pascal theorem.The present application has good repeatability, eliminates the adverse effects of lumen effect on pyrotechnics pressure test results, can isolate the transient high-temperature combustion gas generated when pyrotechnics works, effectively avoid the influence of temperature on test results.
Owner:CHUANNAN MACHINERY PLANT CHINA ASTRONAUTIC SCI &TECH GROUP CORP

Modularized integrated spacecraft recycling comprehensive electronic system

The invention relates to a modularized integrated spacecraft recycling comprehensive electronic system which comprises a power supply and distribution module, two firer management modules, a recycling interface module, a data acquisition and processing module and three FPGA control circuit modules. The modular and integrated design is carried out on each functional module, redundant parts are reduced, the circuit design is optimized, the structural shell is made of light materials, cable connection between single machines is reduced, and power supply, fire work, control and data acquisition are integrated. Under the fault mode of the FPGA control circuit module, the cold backup time controller circuit is switched and started, and normal work of the firer circuit can be guaranteed.
Owner:BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH

An explosive foil for in-line initiator

The utility model discloses a kind of explosion foils for in-line initiator, belong to pyrotechnics technical field, including ceramic substrate (1), metal bridge foil (2) and pin (6), the metal bridge foil (2) is set in the front of ceramic substrate (1), the ceramic substrate (1) and two pins (6) are welded on the back of ceramic substrate (1) by soldering tin (5), two through holes are provided in the position corresponding to the welding of two pins (6) of the ceramic substrate (1), metal powder (3) is filled in the through hole, metal plating (4) is further provided between the soldering tin (5) and ceramic substrate (1);The explosion foil of the utility model is relative to prior art, volume reduces more than 40%, manufacturing cost reduces more than 60%.
Owner:SICHUAN BLUE LION TECH CO LTD

Transduction element chip design parameter determination method, transduction element chip and transduction element

The invention provides a method for determining design parameters of a transduction element chip, the transduction element chip and a transduction element, and belongs to the field of electric heating ignition devices for electric initiating explosive devices. The transduction element chip comprises a bridge region, the bridge region has a V-shaped structure, and the method comprises the following steps: setting a bridge region resistance value according to a preset fusing current of the bridge region; setting the angle of a V-shaped angle in the V-shaped structure according to the preset explosion time of the bridge region under preset explosion current input; determining the length-width ratio of the bridge region according to the angle of the V-shaped angle and the resistance value of the bridge region; and setting the bridge length according to the preset critical explosion current, and determining the bridge width according to the length-width ratio and the bridge length of the bridge region. According to the method, the transduction element chip meeting the safe ignition requirement can be designed, and the design difficulty and the use cost of the chip can be reduced on the premise of ensuring the dimensional accuracy of the bridge shape.
Owner:BEIJING INST OF TECH

Initiating explosive device detection equipment

ActiveCN224230859UEnsure the safety of exercise launchesSatisfy resume tracingAmmunition testingElectrical testingTablet computerElectrical battery
The utility model relates to initiating explosive device detection equipment, which comprises a test unit, an operation unit and a power supply unit, modules are detachably plugged through cables, and the total weight is less than or equal to 17kg. According to the utility model, through the initiating explosive device safety test unit (the constant current source is less than or equal to 8mA), the passive impedance acquisition module and the electrical performance verification module, the battery activation state of ammunition to be tested, the reliability of an ejection network and the integrity of an equipment loop are detected; the test interface supports plug-in connection in a bullet library storage environment and is matched with a built-in double-serial-port server to complete in-situ test; the tablet computer is integrated with a touch operation interface, executes system self-inspection, a multi-mode test process and data management, and generates a resume report. The device is compatible with AC220V + / -10% wide voltage input, has multiple safety mechanisms such as relay board overtime power-off and acquisition board electrical isolation, is suitable for ammunition storage maintenance, verification before chariot filling and drill launch guarantee scenes, and significantly improves the detection efficiency and safety.
Owner:BEIJING AEROSPACE KEYI TECH CO LTD

Air lock air curtain for closing smoke and fire in pipeline

The invention relates to the technical field of pipeline safety engineering, and discloses an airlock air curtain for closing smoke and fire of a pipeline, which comprises an outer shell, an inner shell is coaxially sleeved in the outer shell, an upper cover plate and a lower cover plate are respectively assembled at two axial ends of the outer shell and the inner shell, and the upper cover plate and the lower cover plate are both of annular structures; the outer shell, the inner shell, the upper cover plate and the lower cover plate jointly define a closed cavity, an air inlet is formed in the side wall of one end of the outer shell, a slag discharging opening is formed in the other end of the outer shell, a closing valve is arranged on the slag discharging opening, a plurality of spiral air outlets are formed in the side wall of the inner shell in the circumferential direction, and the spiral air outlets are evenly distributed in the axial direction of the inner shell. Compressed air is introduced through the air inlet holes, a continuous and uniform air curtain wall is formed through the spiral air outlet holes in the inner holes, and the safety and reliability of equipment operation are greatly improved by means of the blocking effect of airflow.
Owner:HENAN NORTH LONGYUAN ELECTRIC POWER DEV CO LTD

Agile remote sensing satellite platform configuration

The application discloses a kind of agile remote sensing satellite platform configurations, it is related to satellite technical field, including star body, remote sensing equipment, foldable energy acquisition system, energy storage module and control system, foldable energy acquisition system includes deployer, foldable device and flexible solar cell panel, deployer includes bottom plate and multiple side plates, bottom plate is fixed to the side of star body, one end of each side plate is connected with bottom plate by a connecting mechanism, connecting mechanism includes positioning hinge, restraint and pyrotechnics, one end of each side plate is connected with bottom plate by positioning hinge, the two ends of restraint are respectively fixed to the outside of side plate and bottom plate, pyrotechnics is fixed on restraint, flexible solar cell panel is fixed on foldable device, and flexible solar cell panel, energy storage module, remote sensing equipment and pyrotechnics are connected with control system.The agile remote sensing satellite platform configuration has the advantages of light weight and high integration, while reducing the launch cost, improves the remote sensing coverage range.
Owner:RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN

Control circuit for initial state setting of unpowered active stage spacecraft and spacecraft

The application provides a control circuit for setting the initial state of a non-powered spacecraft in an orbit, comprising a travel switch group, a self-powering circuit, a battery group and a satellite bus; the self-powering circuit is connected with the battery group and the satellite bus respectively, the travel switch is connected with the self-powering circuit, the travel switch generates a state control signal to the self-powering circuit; the travel switch is electrically connected with a pyrotechnic lock signal generating circuit of the satellite and an electrically controlled starting signal generating circuit of the satellite. The application uses different contact points of the travel switch to build multiple combination modes, which can improve the reliability of the satellite-rocket separation signal and the safety margin of the pyrotechnics, and the circuit composed of the simple travel switch realizes multiple functions, completes the initial state setting of the non-powered spacecraft in the active stage and meets the requirements of multiple task parallel triggering.
Owner:SHANGHAI SATELLITE ENG INST

An electric explosion valve

This utility model discloses an electric explosion valve, belonging to the field of pyrotechnics technology, including a valve body (4), which is a three-way structure. An electric explosion tube (1) and a piston (2) are arranged sequentially from the outside to the inside in one of the ports of the valve body (4). A groove is provided on the outer periphery of the piston (2), and a sealing ring (3) is provided in the groove. A diaphragm head is provided in the port of the valve body (4) opposite to the electric explosion tube (1). A connector (5) is provided in the third port. The electric explosion valve of this utility model has a simple, compact and safe structure, and solves the safety problem in the testing and use of electric pyrotechnics without anti-static design.
Owner:SICHUAN BLUE LION TECH CO LTD

Method for testing impact resistance of industrial electronic detonator under high overload condition

The invention discloses a method for testing the impact resistance of an industrial electronic detonator under a high overload condition, and belongs to the technical field of reliability testing of initiating explosive devices. In order to solve the technical problem that results of a Hopkinson bar test and a simulation water pressure method cannot be directly compared, the invention provides a method for determining the impact pressure of the Hopkinson bar by taking a capacitor power-loss voltage as a common damage variable, respectively establishing quantitative mathematical relationships between the capacitor power-loss voltage and the impact pressure in the two tests and then setting an equivalent voltage condition to deduce a conversion formula between the two pressures. And finally, converting a water pressure method test condition in an industrial standard into an accurate Hopkinson bar laboratory loading parameter threshold. According to the method, quantitative equivalence of two test systems is realized for the first time, so that it is possible to directly judge whether a product meets the industrial impact resistance standard or not by using an efficient and controllable laboratory means, the test efficiency and economic benefits are remarkably improved, and a new standardized approach is provided for reliability evaluation of industrial electronic detonators.
Owner:NANJING POLYTECHNICAL CHEM CO LTD

Modular cluster shooting and bridge plug combination tool for oil and gas wells

This invention discloses a modular cluster perforation and bridge plug assembly tool for oil and gas wells, comprising an upper isolation joint, a bridge plug device, and a tool string axially assembled between the two and electrically connected. The tool string consists of several electrically connected single-cluster tool strings connected end-to-end. Each single-cluster tool string has a modular perforating gun and an initiation and control integrated module, both electrically connected end-to-end. This modular cluster perforation and bridge plug assembly tool for oil and gas wells allows for the separation and high integration of each module. The first three components can be assembled in a pyrotechnics workshop, and through isolated and separate transportation, on-site connection can be easily and quickly completed using only matching connectors. This eliminates the hidden dangers of on-site storage, use, and handling of pyrotechnics, saves preparation time, improves construction efficiency, and ensures safe construction around the clock.
Owner:CHINA PETROCHEMICAL CORP +3

A high-energy, low-sensitivity energetic material based on quaternary organic components and its synthesis method

This invention discloses a high-energy, low-sensitivity energetic material based on a quaternary organic component and its synthesis method. The method uses 3-aminomethyl-4,5-diamino-1,2,4-triazole, dimethylamine, ammonium perchlorate, and perchloric acid as raw materials, and water as a solvent to prepare the target product [TATT][CH3NH2CH3][NH4](ClO4)7. The synthesis method of this invention is simple, uses readily available raw materials, is highly safe, has a mild reaction, and achieves a yield of up to 92%, enabling large-scale production of the product. This invention provides research ideas and experimental references for ensuring the supply of high explosives, explosive formulations, and pyrotechnics in wartime emergency situations.
Owner:NANJING UNIV OF SCI & TECH