38results about How to "Avoid explosion risk" patented technology

This invention discloses a middle plate, an electrode chamber assembly, and an electrolytic hydrogen production device. The middle plate includes a body and a circulation plate. The body is integrally stamped from a metal plate. An S-shaped annular sealing channel is stamped around the perimeter of the body surface. Several first protrusions and second protrusions are stamped on two surfaces of the body inside the annular sealing channel. The circulation plate is inclined and fixedly connected to the first protrusions. The circulation plate is disposed within the annular sealing channel, and the distance between its top edge and the body surface is less than the distance between its bottom edge and the body surface. The electrode chamber assembly is assembled using the aforementioned middle plate, and the electrolytic hydrogen production device utilizes the aforementioned electrode chamber assembly. This invention provides excellent sealing performance. The stamped structure integrating the anode and cathode chambers and the middle plate effectively reduces leakage points and lowers the risk of external leakage. Furthermore, it reduces spot welding processes, lowers internal contact resistance, and thus reduces the energy consumption of the electrolyzer. The above structure is rationally configured and easy to install.

The utility model relates to the technical field of calendering forming machine, specifically is a kind of sealing ring calendering forming machine of rubber material, including machine body, still include: press roll transmission mechanism, press roll transmission mechanism includes two first roller and second roller for being used to extrude rubber material and being rotationally arranged in machine body inside, first roller and second roller are driven by gear mechanism cooperation, first roller is synchronous reverse rotation by gear mechanism when driving second roller rotates;Dust absorption structure, dust absorption structure includes the multiple dust suction nozzles of being arranged in the above of first roller in machine body interior, dust suction nozzle is used to absorb the dust and volatile material released in the rubber material calendering process, the utility model can release the micron level dust particles of large amount of dry rubber material under roller extrusion in calendering process in time absorption, and after purification filtration, it is discharged to outside again, avoid the risk of combustion and explosion of particle aggregation existence, simultaneously avoid the problem of harm worker respiratory system health.

The utility model relates to a tank type explosion-proof electric heater, which belongs to the technical field of electric heaters and comprises a heating tank body, a tubular electric heater main body, a first explosion-proof partition plate, a sealing tank cover, an electric heater cable and a high-temperature-resistant remote-transmission magnetic turning plate liquid level meter, and the heating tank body is provided with a second explosion-proof partition plate. According to the utility model, the U-shaped electric heating tube of the tubular electric heater main body is inserted into the heating tank cavity, the first anti-explosion partition plate and the second anti-explosion partition plate are connected, and the first anti-explosion partition plate and the second anti-explosion partition plate can be combined to separate the anti-explosion isolation cavity and the heating tank cavity, so that electric sparks can be physically isolated, and a steam permeation path can be blocked; the explosion propagation path is blocked through the cavity dividing design, nitrogen is introduced into the explosion-proof isolation cavity through the one-way air inlet valve, the junction box end and the wiring position of the tubular electric heater body can be sealed in the nitrogen inert environment, the inert environment eliminates the possibility of electric spark ignition, and the explosion risk caused by electric spark ignition is avoided. Therefore, the explosion-proof performance of the tank type electric heater can be further improved.

The utility model discloses a kind of explosion-proof fan, including the casing of three-layer composite explosion-proof resin material and wind wheel, wherein outer layer carbon nanotube PEEK composite material effectively leads out static electricity, middle aluminium hydroxide flame-retardant layer prevents flame spread, inner layer ultra-high molecular weight polyethylene reduces friction spark risk.Electrostatic belt can effectively eliminate static electricity accumulation in transmission process, avoid static spark, improve explosion-proof safety.Fan is equipped with rotary electrostatic brush and ground copper wire to eliminate static electricity, and fire barrier is configured at air inlet to prevent flame propagation.Wind wheel blade is provided with tungsten-containing wear-resistant coating and zircon ceramic wear-resistant strip to avoid friction spark.Explosion-proof motor is built-in temperature sensor and vibration sensor, and stator winding adopts arc-resistant enameled wire.The utility model solves the problem of heavy weight and single protection of traditional fan through multiple explosion-proof design, with the characteristics of lightweight, superior explosion-proof performance, stable and reliable operation, especially suitable for flammable and explosive places such as petroleum and chemical industry.

The utility model provides a kind of gas taking device, butt joint gas relay, the gas in gas relay is safely released and sampled, including oil storage unit, exhaust unit, fluid conveying unit, gas collection unit and gas taking unit;Wherein, the fluid of the oil storage unit is input and output to exhaust unit;The fluid conveying unit, fluid in exhaust unit is input or output gas collection unit;The gas collection unit, collect gas from inside gas relay;The gas taking unit, collect gas from inside gas collection unit.It can efficiently, safely realize gas taking.

The utility model provides a kind of explosion-proof and leakage-proof shell structure of solid capacitor, including shell, shell includes lower shell and upper shell, the bottom of lower shell is provided with the base that is outwardly convex, for stabilizing shell, the outer side of lower shell is fixedly connected with protective strip, lower shell bottom upper end surface is provided with pin protection sleeve, the top inner wall of lower shell is fixedly connected with inboard edge strip, the upper end surface of inboard edge strip is provided with guide hole, the lower end surface of upper shell is fixedly connected with guide column;Lower shell is provided with mounting assembly inside, for installing solid capacitor.The utility model sets up heat dissipation hole on upper shell, cooperate lower shell heat dissipation cavity, heat is dissipated immediately, prevent the risk of bulging and explosion caused by internal pressure sudden rise;Lower shell bottom is provided with pin protection sleeve, positive and negative pole pin is inserted into protection sleeve, avoid pin skew, misplacement, while pin protection sleeve provides external support for pin, prevent pin from shaking after welding.

This invention relates to the field of carbon dioxide fracturing technology, specifically to a special powder for carbon dioxide activators and its large-scale preparation process. The special powder uses potassium perchlorate, salicylic acid, and ammonium oxalate as main raw materials, compounded with trace functional additives. The formula is scientifically controlled, possessing both high exothermic properties and inherent safety. The preparation process includes: pre-treating the raw materials followed by multi-gradient drying, graded ball milling and sieving, pre-mixing, homogenization and mixing, and secondary drying. The special powder prepared by this invention has a component uniformity deviation of ≤1%, a shelf life of up to 24 months at room temperature with sealing, 100% ignition reliability, and is compatible with various carbon dioxide fracturing devices, exhibiting significant safety, environmental, and economic advantages in mining, municipal engineering, and high-gas mines.

The invention relates to scintillator glass melted in a high-concentration hydrogen atmosphere and a preparation method and application thereof. The preparation method comprises the following steps: preparing raw materials and mixing the raw materials; charging and melting in a high-concentration hydrogen atmosphere: charging the powder into a high-purity alumina crucible, then putting the crucible into a hearth of a high-concentration hydrogen atmosphere furnace, vacuumizing, introducing mixed gas into the high-concentration hydrogen atmosphere furnace, controlling the total flow of the mixed gas, and melting in the high-concentration hydrogen atmosphere furnace, when the pressure in the hearth is in a micro-positive pressure state, opening a one-way stop valve, controlling tail gas emission, starting an atmosphere furnace heating system, and heating, preserving heat and founding for a certain time; clarifying and homogenizing; molding by casting and annealing; and processing to obtain the scintillator glass. According to the invention, efficient formation and uniform dispersion of Ce < 3 + > are guaranteed through sufficient reduction, and finally, the scintillator glass reaches better levels in transmittance, light yield, decay time and irradiation resistance.

This utility model provides a lithium battery explosion-proof formation machine, comprising: a housing, within which an explosion-proof formation system is installed; the explosion-proof formation system includes a negative pressure extraction unit, a gas manifold unit, a vacuum control unit, a gas detection unit, and an inert gas replenishment unit; the negative pressure extraction unit is connected to the gas manifold unit, the gas manifold unit is connected to the vacuum control unit, and the inert gas replenishment unit is connected to the gas manifold unit; the gas detection unit is located in the gas flow path. By setting up the explosion-proof formation system, functional units such as negative pressure extraction, gas manifold, vacuum control, gas detection, and inert gas replenishment are integrated, forming a complete explosion-proof protection system that can effectively prevent the risk of combustion and explosion during the formation process.

The present application relates to the technical field of filter material preparation, and particularly relates to a wear-resistant blended gradient needle-punched filter material and a preparation method, which comprises the following steps: S1, preparing a first mixture and a second mixture; S2, respectively laying the first mixture and the second mixture to obtain an inner layer and an outer layer; S3, hooking and bonding the outer layer and the inner layer by pre-punching to obtain a base material; S4, vacuum impregnating the base material in an impregnation liquid for h; S5, treating the base material in step S4 at 80-120 DEG C for 15-30 min; S6, applying a finishing agent to the surface of the base material treated in step S5 by padding; S7, treating the base material treated in step S6 at 150-200 DEG C for 3-5 min; and S8, laying a PTFE microporous membrane on the base material treated in step S7. The filter material prepared by the present application has high transverse breaking strength and longitudinal breaking strength, and excellent filtering efficiency.

The invention relates to the technical field of electrocatalysis, and discloses a hydroxide anode for preparing carbon monoxide through electrochemical reduction of carbon dioxide and a preparation method thereof.The hydroxide anode for preparing carbon monoxide through electrochemical reduction of carbon dioxide comprises a base material and a catalyst arranged on the base material, the catalyst comprises a cobalt-chromium-molybdenum alloy and a coating layer coating the outer surface of the cobalt-chromium-molybdenum alloy, and the coating layer comprises a carbon coating layer and tungsten oxide loaded on the carbon coating layer. The molybdenum element, the cobalt element and the chromium element form an alloy, and CO accumulation is reduced. The surface of the cobalt-chromium-molybdenum alloy is coated with the carbon coating layer, the conductivity of the hydroxide anode is improved, CO molecules are prevented from making contact with the surface of the alloy, in the long-term use process, the activity of a catalyst cannot be reduced due to CO poisoning, the hydroxide reaction can be efficiently conducted in the electrolysis process, the Faraday efficiency is improved, and the stability of the electrode is guaranteed. Tungsten oxide is loaded on the surface of the carbon coating layer, so that the activity and the stability are further improved.

The utility model provides an adjustable air window for a coal mine, which belongs to the technical field of mine ventilation and comprises a frame body and a plurality of louvre blades, the louvre blades are respectively and uniformly arranged in a hollow cavity of the frame body through a rotating shaft, one end of the rotating shaft is provided with an adjusting gear, and the adjusting gear is meshed with an adjusting rack. The adjusting rack is connected with a sliding mechanism, a servo motor is arranged on one side of the frame body, the output end of the servo motor is connected with a transmission mechanism, and the transmission mechanism is connected with a rotating shaft. The transmission mechanism comprises a plum coupling, a corner device, a pin coupling and a speed reducer, the output end of the servo motor is connected with the speed reducer, the speed reducer is connected with the corner device through the pin coupling, and the corner device is connected with one end of the rotating shaft through the plum coupling. Through the design of the transmission mechanism and the sliding mechanism, the transmission efficiency can be effectively improved, accurate adjustment of the ventilation quantity is achieved, and safety, reliability, high efficiency and energy conservation are achieved.

The invention belongs to the technical field of biomass carbonization, and particularly relates to a micro-negative pressure biomass high-temperature carbonization device for pyrolysis gas full-fuel utilization, which comprises a kiln body, a kiln body base, a cover body and a thermal mass airflow transmission pipeline, adjusting valves are arranged on branch pipelines of the heat mass airflow conveying pipeline and the cracking gas conveying pipe, and a plurality of temperature sensors are arranged in the kiln body; the induced draft fan is communicated with the kiln body base through the induced draft fan interface; the combustion heat supply device comprises a combustor, the combustor is communicated with the kiln body through a hot mass airflow conveying pipeline and used for conveying hot mass airflow to the kiln body, and the pyrolysis gas conveying pipe is communicated with the combustion heat supply device; and the electrical control center is used for regulating and controlling the working states of the kiln body, the combustion heat supply device and the thermal mass airflow transmission pipeline. The micro-negative-pressure biomass high-temperature carbonization device can realize an oxygen-free environment and fully utilize pyrolysis gas.

The utility model relates to the technical field of electrical equipment, in particular to a novel magnetic control quick-acting pole-mounted circuit breaker, which comprises an insulating shell. The power supply further comprises a wire inlet column, the wire inlet column is fixedly connected to the insulating shell, a wire inlet terminal is electrically connected to the lower portion of the wire inlet column, the wire inlet terminal is fixedly connected to the insulating shell, an electromagnetic coil is electrically connected to the lower portion of the wire inlet terminal, a mounting plate is fixedly connected to the insulating shell, and the electromagnetic coil is fixedly connected to the mounting plate. A control spring is arranged in the electromagnetic coil, an armature is fixedly connected to the control spring and slidably connected with the mounting plate, and a pin is fixedly connected to the lower portion of the armature. According to the utility model, through the rapid reaction between the electromagnetic coil and the armature, the response speed is greatly improved, rapid disconnection when a circuit is short-circuited is realized, the impact of current on electrical equipment is reduced, the fire risk is reduced, the anti-interference capability and the environmental adaptability are further improved, and the risks of contact burning loss and explosion of the arc extinguish chamber are avoided; and the later maintenance cost is reduced.

The utility model discloses a nuclear power plant radioactive waste gas measuring cabinet, it includes cabinet body, side edge shock attenuation support subassembly, bottom shock attenuation support subassembly and gas measurement sampling subassembly. This nuclear power plant radioactive waste gas measuring cabinet is through the side edge shock attenuation support subassembly and bottom shock attenuation support subassembly of distribution setting, when the cabinet body inclines and swings, can slow down and absorb the impact force from the displacement of longitudinal, transverse and oblique direction, thereby guaranteeing the normal operation of cabinet body and internal components, to reach the effect of preventing inclination swing, maintaining normal operation of device. And through setting nitrogen gas purging pipeline, tee, sample gas inlet pipeline, sample gas inlet pipeline, sample gas outlet pipeline and gas sensor, can realize radioactive gas on -line real -time sampling function, avoid the irradiation risk that personnel and radioactive material contact bring, also realized nitrogen gas purging function, avoid the explosion risk that the higher concentration of flammable and explosive gas of airtight pipeline produces.

The utility model relates to the technical field of pharmaceutical chemical industry equipment, specifically disclose a kind of powder raw material synthesis equipment of pharmaceutical intermediates, including rack, reaction kettle and control system, the reaction kettle top is equipped with kettle cover, bottom is equipped with quick-opening type discharge valve, the kettle cover is provided with driving device, high pressure electrostatic precipitator and at least one feeding port;The reaction kettle inside is provided with the stirring assembly driven by the driving device;The outer wall of the reaction kettle is peripherally provided with several ultrasonic transducers, all the ultrasonic transducers are fixed to the outer wall of reaction kettle by mounting bracket;The powder raw material synthesis equipment of pharmaceutical intermediates is cooperated by each component, can efficiently solve material wall hanging problem, improve mixing uniformity, realize accurate temperature control and whole course dust control, also have the beneficial effects of convenient and intelligent operation, equipment maintenance is convenient, product quality is stable and meets the clean production requirement.

An on-board self-pressurization residual hydrogen recovery power generation device and method based on a liquid hydrogen storage and supply system belong to the technical field of new aviation energy. The device solves the problems of low residual hydrogen recovery utilization rate, poor safety and energy waste of the hydrogen storage tank. The device maintains the liquid hydrogen pressure through a liquid hydrogen tank self-pressurization system. The liquid hydrogen enters the cooling channel of the high-temperature components of the engine through the self-pressurization valve and the pump, is heated and vaporized, and then returns to the liquid hydrogen tank. After the liquid hydrogen is exhausted, the relief valve is opened, and the residual gaseous hydrogen in the tank is introduced into the on-board self-pressurization residual hydrogen power generation system. The residual hydrogen gas enters the anode of the proton exchange membrane fuel cell through the liquid hydrogen gasification auxiliary heat exchanger and the pilot-operated pressure reducing valve in sequence. Air is supplied to the cathode of the fuel cell through the ram air inlet. The electric energy generated by the fuel cell is output through the DC-DC converter. The high-temperature exhaust gas of the fuel cell enters the liquid hydrogen gasification auxiliary heat exchanger to preheat the newly introduced hydrogen gas, and completes the heat cycle. It is mainly used in the field of aviation power.

The utility model relates to a kind of inner bag module and water heater, inner bag module, comprising: inner bag body, the installation part is provided on the inner bag body, the outer surface of the installation part forms inclined mounting surface, installation hole is provided on the inclined mounting surface;Electric heating tube, the electric heating tube is set on the inner bag body and is inserted into the inner bag body;Electron anode, the electron anode is sealed and set on the installation part, the electron anode passes through the installation hole and is inserted into the inner bag body, the electrode stick of the electron anode is arranged above the electric heating tube;The inclined mounting surface is configured to support the electron anode inclined arrangement in the inner bag body. Realize the water heater satisfying electron anode height installation requirement and increasing the installation range of electric heating tube in inner bag.

The utility model relates to gas -cooker accessory technical field discloses a hydrogen gas -cooker's fire divider of upper air inlet, including fire divider, with hexagonal hollow tube, with hexagonal nozzle, its characterized in that, the fire divider is screwed on the outer surface of with hexagonal hollow tube, and with hexagonal hollow tube is screwed on the outer surface of with hexagonal nozzle, the inner wall in the fire divider inside is provided with a plurality of fire holes, and the diameter of a plurality of fire holes is 1.2mm 1.8mm, the six prism cavities of with hexagonal hollow tube are provided with a plurality of air inlet holes, and the diameter of a plurality of air inlet holes is all less than 1.0mm, the top of with hexagonal nozzle is conical, and the hexagonal nozzle conical tip is inserted into the inside of hexagonal hollow tube, the hexagonal nozzle conical tip is equipped with air inlet hole along the centre line, and air inlet hole diameter and hydrogen gas stove power are positively correlated, the six prism cavities side wall of with hexagonal nozzle is not equipped with air inlet hole, solved the problem that hydrogen combustion is not sufficient in the use process, and hydrogen escapes from the hole and produces explosion.

The utility model relates to the technical field of carbon black preparation, in particular to a carbon black decoking device and a carbon black production system.The carbon black decoking device comprises a discharging valve, a pulverizer, an auxiliary decoking tank, a replacement pipeline, an exhaust pipeline, a filter, a discharging valve, a discharging pipeline and a stock bin, and the discharging valve is arranged at the outlet end of the decoking tank of a cracking device; the crusher is arranged below the outlet end of the decoking tank; the auxiliary decoking tank is arranged below the crusher; the replacement pipeline is communicated with the auxiliary decoking tank, and the filter is communicated with the auxiliary decoking tank through an exhaust pipeline; the stock bin is communicated with a discharge hole of the auxiliary decoking tank through a discharge pipeline; and the discharge valve is arranged at the discharge hole of the auxiliary decoking tank. Therefore, by utilizing the device, the decoking and recycling operation of the carbon black can be realized, the manpower is reduced, the working efficiency is improved, the safety of workers is ensured, the quality of the carbon black is greatly improved, the carbon black can be recycled, and the yield of the carbon black is greatly improved.

This invention provides a converter gas purification and energy recovery system, comprising a moving particle bed, a waste heat boiler, a secondary dust collector, and a gas holder. The moving bed particles are made from compressed converter ash and contain a large amount of iron and iron oxides. The invention also provides a method for using this system, comprising: high-temperature converter gas entering the moving particle bed, filtering most of the dust and purifying the oxygen component in the gas to prevent gas explosions in subsequent operations; the purified gas entering the waste heat boiler to recover waste heat and generate medium- and high-pressure steam; the gas after waste heat recovery undergoes dust removal in the secondary dust collector and then enters the gas holder. When the CO content in the gas is lower than the concentration entering the gas holder, it enters the moving particle bed to reduce the iron oxides in the particles. This method uses a completely dry dust removal process, consumes zero water resources, eliminates gas safety issues, is environmentally friendly, and produces no dust or CO emissions. It can recover the full-temperature sensible heat of the converter gas, release the chemical energy in the gas, and utilize TFe resources in the dust collector ash.

The invention discloses a control system for a hydrogenation device, belongs to the field of chemical automation control, and aims to solve the problems of low efficiency, large potential safety hazard and short equipment life caused by large hydrogenation amount fluctuation, unstable reaction pressure and remarkable pulsating pressure of a hydrogen conveying pipeline in the prior art. The system comprises a hydrogen supply state sensing module, a reactor working condition monitoring module, a dynamic demand prediction module, a multi-stage flow regulation execution module, a pulsation suppression buffer module and a central cooperative control unit, the hydrogen demand is predicted through multi-source high-precision sensing and an LSTM neural network, the flow is adjusted through cooperation of a primary / secondary / micro three-stage valve, and pressure pulsation is restrained in combination with an energy accumulator and a porous damping cavity. The central control unit executes piecewise nonlinear PID, fuzzy logic and adaptive PWM algorithms at the frequency of 50Hz, and integrates a digital twinborn rehearsal mechanism to ensure control safety and stability. According to the invention, the precision, the safety and the equipment reliability of the hydrogenation process are effectively improved.

The utility model relates to a backwash dust filter device for a dry-type screw pump. The backwash dust filter device comprises a filter shell consisting of a cylindrical shell and a conical hopper at the lower part, wherein the cylindrical shell is connected up and down; a gas outlet is formed in one side of the upper part of the cylindrical shell, and a compressed gas inlet is formed in the other side; a purge gas inlet pipe is arranged at the compressed gas inlet; an air inlet is formed in one side of the lower part of the cylindrical shell; a partition plate is arranged between the air inlet and the air outlet, a plurality of evenly-distributed stainless steel filter screen cylinders are arranged below the partition plate, the bottom face of the blowing gas inlet pipe is connected with a plurality of evenly-distributed pulse nozzles, and the pulse nozzles correspond to the stainless steel filter screen cylinders one to one. And a reverse blowing electromagnetic valve and a flow regulating valve are arranged on the outer side of the compressed air inlet flange. The double-acting mode of cyclone separation and filter screen filtration is adopted, the filtering effect is better, the structure is simple, and use and maintenance are convenient.

This invention relates to the field of marine engineering technology, and in particular to a marine liquefied petroleum gas (LPG) fuel supply system. The system includes an LPG storage tank, a refueling module, a low-pressure pump, a high-pressure pump, a heat exchanger, a valve assembly, an engine, a recirculation tank, a dual pressure relief system, and a nitrogen system. The refueling module achieves safe LPG refueling and gas-phase reflux through dual interfaces; the low-pressure and high-pressure pumps work together in the reflux pipeline to stabilize fuel pressure, and the water-glycol circulation system, in conjunction with the heat exchanger, precisely regulates fuel temperature; unconsumed fuel is recovered to the storage tank for recycling via the return valve assembly and recirculation tank; the dual independent pressure relief system, combined with a gas-liquid separator, intercepts liquid LPG, and the nitrogen system performs pipeline replacement and purging. This system solves the problems of unstable pressure, fuel waste, emission pollution, and insufficient safety protection inherent in traditional technologies. It provides stable fuel supply, high utilization rate, and is safe and environmentally friendly, meeting the operational requirements of marine LPG dual-fuel engines.

This utility model relates to the field of refractory material testing technology. It provides a mixing pot for refractory material testing, comprising a mixing pot body, a feeding mechanism at the upper end of the mixing pot body, and a dust removal mechanism on the right side of the mixing pot body. The dust removal mechanism includes a dust removal box and an electric push rod, with a dust suction hood fixedly connected to the left end of the electric push rod. The feeding mechanism includes a feeding box, with a movably connected screen inside the feeding box, and a mounting plate fixedly connected to the top of the feeding box. This technical solution solves the problems of existing mixing equipment for testing generally lacking pre-treatment functions for aggregates, making it difficult for large aggregate particles to mix fully with fine particles, resulting in uneven sample composition distribution and making the test results unable to accurately reflect the overall performance of the refractory material. Furthermore, large aggregate particles may cause wear to the mixing device during the mixing process, shortening the equipment's service life.

A kind of new energy vehicle quick fire extinguishing device of rotary telescopic, including rotary telescopic fire extinguishing cover device, the fire extinguishing cover device includes flame-retardant fabric, flame-retardant fabric inside cladding connection rotary telescopic framework, the rotary telescopic framework is hollow pipe structure, hollow pipe structure connects fire water spray head and fire water connector, the surface of the flame-retardant fabric is provided with pressure relief skylight, the bottom of the fire extinguishing cover device is provided with water-blocking fence around new energy vehicle, water-blocking fence and new energy vehicle between the fire water that accumulates fire water spray head sprays forms water pool and soaks new energy vehicle.The utility model new energy vehicle quick fire extinguishing device of rotary telescopic is through fire extinguishing cover device on the basis of portable and fast cladding entire car realizes air insulation, then telescopic framework multi-angle injection fire extinguishing, and water-blocking fence forms the soaking fire extinguishing performance to car, finally pressure relief skylight prevents the explosion risk caused by gas accumulation.

The utility model provides a kind of battery pack and electrical equipment, battery pack includes box, multiple battery modules and multiple connecting pipes, box is formed with pressure discharge passage, pressure discharge passage is suitable for being communicated with outside atmosphere, multiple battery modules are located in box, multiple battery modules include first battery module and multiple second battery modules, first battery module is adjacent pressure discharge passage setting, every battery module is formed with pressure relief passage, the pressure relief passage of first battery module is connected with pressure discharge passage, multiple connecting pipes are located in box, and the pressure relief passage of every second battery module is connected pressure discharge passage by connecting pipe.It is thus reduced the complexity of pressure relief path, ensure that multiple battery modules can release pressure simultaneously in emergency, further improve the security of battery pack.

This utility model discloses a negative pressure system for solid-state recovery of molten material from an alkali recovery boiler, relating to the field of alkali recovery boilers in the pulp and paper industry. It includes: a solid-state treatment component for recovering molten material from the alkali recovery boiler, a flue gas treatment component for recovering flue gas from the incineration section, and a negative pressure pulse dust collector. Both the solid-state treatment component and the flue gas treatment component are connected to the negative pressure pulse dust collector for collecting fly ash generated during the recovery process. This utility model uses the negative pressure pulse dust collector to uniformly collect fly ash generated by the solid-state treatment component and the flue gas treatment component, forming a fully closed negative pressure system. This effectively prevents dust escape, eliminates the risk of combustible dust explosions at the source, reduces equipment corrosion and occupational hazards, and achieves resource utilization of ash and slag. The two-stage slag cooling device, scraper conveyor, slag bin, and baler are directly connected to the negative pressure dust collection system to ensure the sealing of the entire molten material treatment process.

This utility model discloses a chemical reaction vessel, relating to the field of reaction vessel technology. It includes a reaction vessel body with a sealing door hinged to its right side. A safety mechanism is installed on the outer side of the reaction vessel body, comprising a high-pressure solenoid valve and a support frame. A warning flashing light and an alarm speaker are fixedly connected to the upper surface of the support frame. A connecting pipe is fixedly connected to the input end of the high-pressure solenoid valve and the outer surface of the reaction vessel body. Through the coordinated operation of the reaction vessel body, sealing door, key controller, high-pressure solenoid valve, support frame, temperature sensor, connecting pipe, explosion-proof digital pressure gauge, exhaust pipe, warning flashing light, and alarm speaker, the reaction vessel body can hold the chemical materials required for the chemical reaction and provide them with the appropriate reaction environment and reaction regulation. The key controller can monitor the temperature inside the reaction vessel measured by the temperature sensor and the gas pressure inside the reaction vessel body and connecting pipe measured by the explosion-proof digital pressure gauge.

The invention relates to the field of heating and ventilation of offshore booster stations, in particular to an explosion-proof ventilation device for heating and ventilation of an offshore booster station, which comprises a mounting mechanism, a ventilation mechanism is mounted on the mounting mechanism, the explosion-proof ventilation device comprises at least two ventilation pipelines, the ventilation pipelines are arranged on the mounting mechanism, and exhaust pipes and pressure relief pipes are mounted at the tops of the ventilation pipelines; a piston column is mounted in the ventilation pipeline; the sealing cavity is formed in the top end of the ventilation pipeline, a connecting rod is arranged at the end of the piston column, a first power supply plate and a first electric shock piece are installed on the connecting rod, a fixing frame and a power supply battery are installed at the outer end of the ventilation pipeline, and the power supply battery is connected with the first power supply plate through a first power supply assembly; a second power supply plate and a second electric shock piece are mounted on the piston plate; according to the safe explosion-proof ventilation device for the marine booster station heating and ventilation system, safe explosion-proof ventilation can be effectively and conveniently conducted on the marine booster station heating and ventilation system, and therefore safe work of the pipeline can be facilitated.