31results about How to "Good explosion-proof" patented technology

The fire-extinguishing flame-retardant explosion-proof battery storage bag composite structure comprises a heat transfer layer, a cooling explosion-proof layer, a fire-extinguishing barrier layer and a waterproof and fireproof layer which are sequentially arranged from inside to outside, a heat transfer layer, a cooling explosion-proof layer, a fire-extinguishing barrier layer and a waterproof and fireproof layer which are sequentially arranged from inside to outside form a fire-extinguishing flame-retardant explosion-proof battery storage bag composite structure; the heat transfer layer is used for conducting heat generated by batteries in the battery storage bag to the cooling explosion-proof layer; the cooling explosion-proof layer is used for cooling and extinguishing the fire of the batteries in the battery storage bag; the fire extinguishing barrier layer is used for extinguishing and blocking fire of batteries in the battery storage bag; the waterproof and fireproof layer is used for preventing external fire sources and water sources from invading the batteries in the battery storage bag. The explosion-proof battery can prevent internal fire sources from leaking out, can also prevent external fire sources, water sources and the like from invading, can be applied to various protection products needing to be used for charging batteries, is good in fire extinguishing, flame-retardant and explosion-proof performance, guarantees personnel safety, and reduces property loss.

The invention relates to the technical field of refractory materials, in particular to an iron runner castable and a preparation method thereof. The iron runner castable comprises fused quartz, silicon carbide, quartz powder, zirconium-containing silicon micro powder, ball pitch, wettable crystalline flake graphite, metal silicon powder, iron scale powder, hydrated calcium silicate, a water reducing agent, explosion-proof fibers and silica sol. The raw materials of the iron runner castable can cooperate with one another, the volume density and the thermal expansion coefficient of the iron runner castable are reduced, and the thermal folding strength is improved, so that the unit refractory consumption cost of a molten iron runner is reduced, the crack phenomenon is reduced, the molten iron scouring resistance is improved, the characteristics of the molten iron runner are better met, and the service life is longer.

The application discloses a composite stratum multi-cutter disc rectangular pipe jacking blind area processing structure and method, comprising a drilling and blasting integrated processing structure, defining the advancing direction of the pipe jacking machine as the front, the drilling and blasting integrated processing structure comprising a drilling module and a blasting module connected in sequence from front to back, the blasting module rear end being connected with a drilling machine through an adapter pipe; a channel is arranged in the soil chamber corresponding to the cutter disc blind area of the multi-cutter disc rectangular pipe jacking machine, the drilling and blasting integrated processing structure being arranged in the channel, and a valve being arranged on the side of the channel close to the cutter disc. The drilling and blasting integrated processing structure can drill and excavate the hard rock in the blind area of the pipe jacking machine and perform blasting to form dense cracks in the blind area, break the originally hard rock, and thus realize full-face construction of the pipe jacking machine in the composite stratum.

The anti-explosion ammonia decomposition reactor system comprises an ammonia decomposition reactor, an anti-explosion part and a combustible gas detection and treatment part, the explosion-proof part comprises a closed explosion-proof shell, a nitrogen source, a nitrogen flow regulating valve, a heat exchanger and an electric heating furnace, and the gas detection and treatment part comprises an online analyzer and a tail gas treatment device; the ammonia decomposition reactor is arranged in the explosion-proof shell, and a nitrogen source is sequentially connected with the heat exchanger and the electric heating furnace through a nitrogen flow regulating valve, then is filled into the explosion-proof shell through a nitrogen inlet of the explosion-proof shell and is discharged out of the explosion-proof shell through a gas vent; the gas emptying port is connected with the heat exchanger, and nitrogen containing combustible gas is subjected to heat exchange and then is sent to the tail gas treatment device and the online analyzer; and the nitrogen flow regulating valve and the online analyzer are connected to a DCS (Distributed Control System) and are in cascade control connection. The explosion-proof ammonia decomposition reactor system can automatically detect and dispose combustible gas, and has a good explosion-proof effect.

The utility model provides an anti-explosion lithium battery forklift and belongs to the technical field of forklifts. The explosion-proof battery box comprises a main box body and a side box body; the side box body is fixedly connected to the first end of the main box body; a battery is arranged in the main box body; a cooling pipe is arranged in the main box body; the cooling pipe is wound outside the battery; and a fan is arranged in the side box body to cool the cooling pipe. Cooling liquid is arranged in the cooling pipe and is driven by a pump. The forklift provided by the utility model comprises the explosion-proof battery box, so that the explosion range of the battery can be limited in the battery box, and other parts of the forklift are protected; meanwhile, heat dissipation of the explosion-proof battery box is achieved through the cooling pipe, air holes do not need to be formed, the overall strength of the explosion-proof battery box is guaranteed, and the explosion-proof battery box has a good explosion-proof effect.

The utility model discloses an explosion-proof lithium ion storage battery power supply which comprises a power supply box, a shell of the power supply box is made of a steel plate, a plurality of cavities including battery mounting cavities are formed in the shell of the power supply box through vertical steel partition plates which are transversely and longitudinally welded, and a plurality of battery mounting grids are formed in the battery mounting cavities. A plurality of lithium ion batteries are mounted in each battery mounting grid, and all the lithium ion batteries in the battery mounting cavity are connected in series to form a lithium ion battery pack; the top of the part, corresponding to the battery installation cavity, of the power box is provided with an anti-explosion breathing drain valve which can be automatically opened to release internal pressure and prevent the power box from exploding when the pressure in the battery installation cavity reaches or exceeds a limit value, and the partial or whole surface of a shell of the part, corresponding to the battery installation cavity, of the power box is in a corrugated shape. According to the utility model, the defects of insufficient shell strength, poor heat dissipation effect, poor explosion-proof performance, potential safety hazard, small deformation resistance and the like of the lithium ion storage battery power supply of the existing mining rubber-tyred vehicle are overcome.

The application provides an explosion-proof elevator car door lock device and a control method. The device comprises a door blade bottom plate, a mechanical and electrical interlocking assembly, a positioning assembly, and a door machine bottom plate. The mechanical and electrical interlocking assembly comprises a door blade arm, a lock hook, and a hook seat. The lock hook has a first anti-static structure and / or the hook seat has a second anti-static structure. One of the lock hook and the hook seat is provided with an electrical switch, and the other is provided with an electrical contact. The current of the electrical contact is less than or equal to 0.2 A, and the voltage of the electrical contact is less than or equal to 48 V. The hook seat is arranged on the door machine bottom plate, and the lock hook is rotatably arranged on the door blade bottom plate and connected with the door blade arm. One of the door blade bottom plate and the door machine bottom plate is provided with a positioning seat, and the other is provided with a first rotating piece and an elastic piece. The first end of the first rotating piece has a third anti-static structure. The second end of the first rotating piece is connected with the elastic piece. The elastic piece is used to abut the first end of the first rotating piece against the positioning seat when the mechanical and electrical interlocking assembly is locked. The application has high installation performance.

The invention relates to the technical field of PCB detection, in particular to a protective cover for a temperature rise test, which comprises a protective box cover body, a sealing door plate, a test placement seat and a PCB clamp, and is characterized in that the front side of the protective box cover body is provided with an opening for taking and placing a PCB, and a partition plate is fixed in the protective box cover body and divides the interior of the protective box cover body into a test cavity and a mounting cavity; the at least two test placement seats are arranged in the test cavity in an array mode in the vertical direction, each test placement seat can be pulled, pushed and adjusted in a front-back sliding mode, and a PCB clamp is arranged above each test placement seat. According to the invention, the PCB is arranged in the protective box cover body for a sealing test, so that the sealing environment in the test cavity can be ensured, the influence on the actual temperature detection result due to excessive heat loss caused by external air-conditioning wind or environmental wind blowing on the PCB is avoided, the protective box cover body and the sealing door plate have a good anti-explosion effect, explosion fragments can be effectively resisted, and the service life of the test box is prolonged. And detection personnel and external detection equipment are prevented from being injured.

The invention relates to an explosion-proof sound post comprising a shell; the explosion-proof loudspeaker comprises a lower cover and an upper cover which are mutually spliced to form a cavity, and a loudspeaker unit arranged in the cavity, the edge of the upper cover is provided with a first step which forms a first spigot explosion-proof surface with the lower cover, and the bottom surface of the lower cover is provided with a cable hole penetrating through the bottom surface; the explosion-proof hardware cavity comprises a hardware cavity lower cover, a hardware cavity upper cover and a hardware cavity top cover, the hardware cavity lower cover and the hardware cavity upper cover are in butt joint to form a hollow cavity, the hardware cavity top cover covers the hardware cavity upper cover in a sealing mode, the edge of the hardware cavity top cover is provided with a step part, a fourth spigot explosion-proof face is formed by the hardware cavity top cover and the step part, and the hardware cavity top cover is provided with a hardware cavity cable hole penetrating through the hardware cavity top cover; the horn unit of each explosion-proof loudspeaker is electrically connected with the circuit board in the hollow cavity through a cable, the first end of the cable is arranged in the cable hole through the first stuffing box, and the second end of the cable is arranged in the cable hole of the hardware cavity through the second stuffing box.

The invention relates to the technical field of control boxes, in particular to a power control box which comprises a base, a protection plate, a lifting mechanism, a box body and a buffer assembly, and the protection plate is arranged on the side, away from the ground, of the base; the lifting mechanism is arranged on the base; the box body is arranged between the base and the protection plate and connected with the lifting mechanism, and the box body can be driven by the lifting mechanism to move in the height direction of the base; the buffer assembly is arranged between the protection plate and the box body and makes elastic contact with the box body so that the speed of the box body can be gradually reduced to zero in the process of getting close to the protection plate. The speed of the box body can be gradually reduced to zero in the process that the box body is close to the protection plate, large impact generated at the moment when the box body collides with the protection plate is effectively avoided, precise elements in the box body are protected, explosion caused by out-of-control of the elements in the box body due to impact is effectively prevented, and a good anti-explosion effect is achieved.

This utility model discloses a pneumatic, plug-in type flexible explosion-proof stirring device, including a pneumatic motor, a transmission rod, a sleeve, and a flexible air-filled stirring device. A transmission rod is connected to the shaft end of the pneumatic motor, and a sleeve is installed outside the transmission rod. The flexible air-filled stirring device is installed on the lower shaft end of the transmission rod. A universal joint is installed outside the sleeve, and a hollow sphere is installed in the spherical seat of the universal joint. This utility model operates through flexible air-filled universal rotation stirring, featuring a simple structure, excellent explosion-proof performance, and high stirring efficiency.

The utility model discloses a mine explosion -proof bottom -raising machine based on three -arm, relates to mine explosion -proof bottom -raising machine technical field, including removing the obstacle subassembly, removing the obstacle subassembly includes base, and one side of base is equipped with the connecting frame, and the connecting frame bottom is equipped with the hydraulic cylinder, and the hydraulic cylinder bottom is equipped with the mounting seat, and the mounting seat one side outer wall is equipped with the adjusting motor. The utility model discloses through removing the obstacle subassembly can adjust the height and angle of the shovel, and the movement of the cooperation device when adjusting to the appropriate angle control shovel and ground contact can carry out efficient cleaning to the obstacle on the moving path such as gravel etc., can avoid having the obstacle to influence the normal movement of the device, guarantee the normal use of the device, when cleaning the obstacle, through the spring can play the role of buffering, avoid the damage of shovel, when the shovel moves the buffer through the deformation of spring, through the guide rod sliding in the guide hole of adjusting frame can limit the moving track, avoid the situation of the deviation of shovel.

The present invention provides an explosion-proof starter motor for an explosion-proof forklift, comprising an explosion-proof housing and an explosion-proof end cover for accommodating a motor body, wherein the explosion-proof housing and the explosion-proof end cover are sealed by a first sealing ring, and the stopper is positioned and then locked and connected by bolts; the front end thread of the explosion-proof end cover is threadedly mounted on a front bearing cover, and the front bearing cover and the transmission mechanism of the motor body are sealed by an oil seal, and the explosion-proof end cover and the front bearing cover are sealed by a second sealing ring, and the explosion-proof end cover and the copper sleeve sleeved on the output shaft of the transmission mechanism are interference-fitted; in addition, the DC series-excited motor, electromagnetic switch and starter relay of the motor body are all two-wire structures. The present application meets the performance requirements of a forklift for safe operation in dangerous environments such as gas and / or dust, eliminates safety hazards, and has a significant explosion-proof effect. The present invention also provides an explosion-proof forklift including the above-mentioned starter motor, which has the same driving performance as an ordinary forklift and has a significant explosion-proof effect.

The invention discloses an anti-explosion rearview mirror and a manufacturing method thereof, and belongs to the field of rearview mirrors, the anti-explosion rearview mirror comprises rearview mirror glass of a curved surface structure, a supporting assembly module matched with the curved surface is arranged on the back face of the rearview mirror glass, and a connecting piece used for being connected with application equipment is arranged on the side, back on to the rearview mirror glass, of the supporting assembly module. And a damping assembly is arranged on the connecting piece. The manufacturing method comprises the following steps: manufacturing the supporting assembly module component by adopting a light high-strength metal material; the rearview mirror glass is made of specially-made high-strength glass and is directly formed on the metal supporting block in a hot bending mode. Welding parts of the supporting assembly module; rearview mirror glass is evenly bonded to the supporting assembly module, and it is guaranteed that the centers are located at the same position; finally, the connecting piece and the damping assembly are installed. The rearview mirror provided by the invention is not easy to break, good in impact resistance and relatively good in explosion-proof performance; and the coating has the properties of strong adhesive force, corrosion resistance, easiness in cleaning and the like.

The utility model provides an explosion-proof box, electronic equipment and an electric power system, and relates to the field of electrical technology. The explosion-proof box comprises a box body, a box cover, a separable locking unit and an anti-falling unit; the box body is provided with an opening, and the box cover is connected with the box body through a separable locking unit, so that the box cover covers the opening; the anti-falling unit comprises an anti-falling structure arranged on the box cover and a stopping structure arranged on the box body, when the box cover covers the opening, the stopping structure and the anti-falling structure are arranged at intervals in the opening direction of the opening, and the stopping structure is located on the movement path of the anti-falling structure moving towards the side away from the box body in the opening direction. According to the anti-explosion box, the stroke of the box cover moving towards the side away from the box body in the opening direction of the opening is limited through the anti-falling structure, the box cover can be prevented from flying out due to explosion, on the basis that the protection requirement of the anti-explosion box is met, the initial locking force of the separable locking unit can be set to be small, pressure relief can be started at the initial stage of explosion, and the anti-explosion box is convenient to use. The explosion-proof performance of the explosion-proof box is good.

The present invention belongs to the technical field of metal packaging can extrusion molding, and specifically relates to an explosion-proof inflation device and a metal can extrusion molding tool using the same. The present invention includes an inflation nozzle whose one end is connected to the air source air path and the other end is connected to the inner airbag air path, and an outer airbag sleeved on the outer side of the inner airbag; the mounting end surface of the inner airbag is sealed and matched with the end of the inflation nozzle, and a buffer gap is provided between the inner airbag and the outer airbag; the outer airbag is connected to the inflation nozzle gap through an arc-shaped matching block, and a plurality of exhaust grooves are arranged circumferentially at the connection part between the outer airbag and the inflation nozzle, and the notch of the exhaust groove is connected to the buffer gap air path. The present invention adopts an inner and outer layer of rubber inflatable bags, and there is a buffer gap between the two layers of inflatable bags in an uninflated and pressurized state, and an exhaust groove for discharging the gas in the buffer gap is provided between the outer airbag and the inflation nozzle, thereby further solving the explosion problem caused by scratches on the inflatable bag.

The utility model discloses an explosion-proof mineral insulated power cable, which relates to the technical field of power cables and comprises five groups of conductors, insulating sheaths are arranged on the circumferential outer walls of the five groups of conductors, copper sheaths are arranged outside the insulating sheaths, and a filling layer is filled in gaps between the copper sheaths and the insulating sheaths. The outside of the copper sheath is respectively provided with the buffer layer, the outer sheath and the wear-resistant layer, so that the whole cable can prevent water, moisture, oil and some chemical substances from being damaged and prevent flame-retardant flammable oil steam, gas and flame from spreading, and in addition, the cable adopts the seamless copper pipe as the copper sheath, so that the cable has considerable mechanical strength, and the service life of the cable is prolonged. Therefore, the explosion-proof device has the characteristics of good explosion-proof performance and strong explosion-proof capability.

This invention relates to the field of battery technology, and more specifically, to a solid-state battery cell and a solid-state battery. The solid-state battery cell provided by this invention includes at least one layer of flame-retardant and explosion-proof material. By spatially separating the flame-retardant and explosion-proof material layer and the electrode layer, this solid-state battery cell achieves improved safety of the high-energy-density solid-state battery system without significantly reducing the cell's energy density. Furthermore, the amount of flame-retardant and explosion-proof material added is unlimited and can be arbitrarily adjusted according to protection requirements to achieve the ideal flame-retardant and explosion-proof effect. In addition, this structural design eliminates interfacial side reactions caused by large-area contact between the flame-retardant and explosion-proof material and electrolyte particles, as well as compatibility issues with solvents in the electrode preparation process.

The utility model provides a kind of explosion-proof inclined plate piston open-type compressor unit of underground coal mine integrated air conditioner, the compressor unit includes compressor, explosion-proof motor and coaxial connecting piece, compressor has V-type air inlet, exhaust port, and the outer end of connecting shaft is provided with convex connecting block;Explosion-proof motor is coaxial with compressor, and the front end of output shaft has matching concave groove, and convex connecting block is inserted to realize circumferential locking, and coaxial connecting piece is composed of sleeve, front and rear end plate, and is sleeved with connecting shaft and output shaft outside, and length prevents axial disengagement, and front end plate is connected with compressor, and rear end plate is connected with explosion-proof motor, and sleeve is provided with observation port for easy monitoring.The compressor unit is explosion-proof safe, power transmission is stable, installation and maintenance are convenient, and is suitable for underground coal mine integrated air conditioner.

The invention provides an explosion-proof diesel engine waste gas radiator which comprises a base plate and a shell, the base plate is fixed to one side of the shell, a blade is arranged on one side of the base plate and located in the shell, the blade is arranged in a spiral shape and forms a vortex flue, and the interior of the blade is hollow and forms a vortex water channel; an air inlet pipe is arranged in the middle of the other side of the base plate, one end of the air inlet pipe penetrates through the base plate and is provided with an air outlet hole, an air outlet pipe is arranged on the shell, and the air outlet pipe and the air outlet hole are respectively communicated with the vortex flue; the base plate is further provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the vortex water channel. According to the invention, the cooling liquid flows in the vortex water channel in the blade, and the high-temperature waste gas flows in the vortex flue outside the blade, so that the heat exchange between the cooling liquid and the high-temperature waste gas is realized, the cooling liquid in the vortex water channel can be recycled, and the vaporization consumption speed of the cooling liquid is reduced.

The invention discloses a tilt cylinder hydraulic motor device for chain tensioning and a chain tensioning method thereof.The tilt cylinder hydraulic motor device comprises a shell, a flow distribution valve arranged on one side of the shell, an integrated valve communicating with the flow distribution valve and a hydraulic assembly arranged in the shell; the hydraulic assembly comprises a crankshaft, a plurality of tilt cylinders connected to the crankshaft and an output spline arranged at one end of the crankshaft, the output spline is connected with a non-return device, the tilt cylinders communicate with the pile-up valve, one end of each tilt cylinder is hinged to a rotating connector, and the output spline is meshed with a tensioning assembly. The tensioning assembly comprises a rotating frame, an idle gear hinged to the rotating frame and adjusting gear teeth arranged at one end of the rotating frame, the adjusting gear teeth are in meshed connection with a worm, a transmission gear is arranged in the rotating frame, the inner side of the transmission gear is meshed with the output spline, and the outer side of the transmission gear is meshed with the idle gear; the position of the idle wheel can be adjusted by rotating the adjusting column, then the chain tightening device is driven to tighten a chain, an adjusting handle does not need to be arranged on the chain tightening device, and space is saved.

The invention relates to a system for supplying power to a top drive pipe processing device, which comprises a transmitting end circuit assembly, a transmitting end, a receiving end and a receiving end circuit assembly, and is characterized in that the transmitting end circuit assembly and the transmitting end are arranged on equipment which is kept static with a top drive box body, and the receiving end and the receiving end circuit assembly are arranged on a rotating part; at least one group of first ferromagnetic materials wound with transmitting coils is arranged in the transmitting end, the transmitting coils are electrically connected with the transmitting end circuit assembly, a plurality of groups of second ferromagnetic materials wound with receiving coils are annularly and uniformly distributed in the receiving end at intervals, the receiving coils are electrically connected with the receiving end circuit assembly, and the transmitting end and the receiving end are distributed at intervals. Therefore, the minimum value of the mutual inductance magnetic flux of the two parts is not lower than a set value. The device has the advantage that the function of uninterruptedly supplying power to the pipe processing device in the rotating process of the top drive rotating head in a non-contact mode is achieved. The system supplies power in a non-contact mode.

This invention provides a single-cavity explosion-proof electromagnetic relay, comprising a base plate, a coil support on one side of the base plate, a coil mounted in the coil support, an adsorption plate above the coil support for contacting normally open or normally closed contacts, normally open, normally closed, and other contacts integrated into the base plate, a contact heat-conducting plate embedded within the base plate for contacting the normally open or normally closed contacts, and the upper and lower ends of the coil respectively contacting the coil heat-conducting plate; an inner sleeve connected to the base plate is provided outside the coil support, an outer sleeve is provided outside the inner sleeve, and a support grid is provided inside the outer sleeve, forming a gap between the inner sleeve and the outer sleeve for resin casting; heat dissipation fins are bolted to the outside of the movable cover. This invention maintains excellent explosion-proof performance while ensuring heat dissipation performance, achieving a balance between the two and meeting the requirements for use in a single explosion-proof cavity.

The utility model discloses an anti-explosion pressure switch which comprises a shell, a cover, a connecting base, a diaphragm, a lower ejector rod, a microswitch and an anti-explosion cable gland. The cover is detachably connected with one end of the shell and is used for sealing one end of the shell; the connecting base is detachably connected with the other end of the shell, and a connecting hole capable of communicating the cavity with a target pipeline is formed in the connecting base; the diaphragm covers the opening surface of one end, facing the cavity, of the connecting hole and is used for elastically sealing and separating the cavity and the connecting hole; one end of the lower ejector rod abuts against the diaphragm, and the other end of the lower ejector rod faces the connecting hole; the microswitch is fixedly arranged in the cavity, and a movable contact of the microswitch is linked with the lower ejector rod; the anti-explosion cable gland is arranged on the shell and used for leading out a wire electrically connected with the microswitch.

The application discloses a remote control system for propionyl chloride production and a control method thereof, and the method comprises the following steps: S1, establishing a communication connection between a remote control center and each reaction kettle, and collecting temperature, air pressure and process running state data in real time; S2, comparing the collected data with a threshold value, and judging whether there is an abnormal working condition; S3, automatically triggering an alarm device and sending an evacuation notice to on-site personnel when an abnormality is detected; S4, automatically sending a cut-off instruction to the corresponding production process, and stopping the operation of the control device; and S5, sending a repair task instruction to maintenance personnel. The system comprises a remote control center, an intelligent monitoring air pressure gauge, an actuating mechanism, an alarm device and a communication notification module, can realize real-time monitoring of key process parameters, automatic early warning of abnormalities and remote centralized control of production processes, significantly improves the safety supervision strength and emergency response efficiency of the propionyl chloride production process, effectively reduces the probability of safety accidents and reduces product loss.

The invention discloses a multi-channel programmable explosion-proof digital display pressure sensor. Comprising a shell, a man-machine interaction module, an acquisition module, an auxiliary module, an analog channel and a digital channel, wherein the man-machine interaction module is arranged in the shell and is used for checking a current measured value and modifying configuration information to complete man-machine interaction; the acquisition module is used for acquiring a medium pressure signal; the analog channel is used for realizing analog signal output; the communication channel is used for realizing I-Li < nk > bus communication, the M12-5-core waterproof connector is used for outputting signals in the analog channel, the digital channel and the communication channel and inputting a main power supply, and the core controller is used for controlling and coordinating electricity of all parts of the whole machine and has a data operation function. According to the invention, the measurement mode can be arbitrarily configured into an absolute pressure mode and a relative pressure mode, and the measurement medium can be any non-corrosive liquid and gas medium, so that the application range is wider.

The utility model relates to a coal mill fire extinguishing system which comprises a coal mill, the coal mill is provided with a coal mill powder inlet pipe and a coal mill powder outlet pipe used for being communicated with a boiler, a fire detector is arranged in the coal mill, and the coal mill fire extinguishing system further comprises a carbon dioxide gas inlet pipe communicated with the coal mill. A gas gate valve is arranged in the carbon dioxide inlet pipe, and the fire extinguishing system of the coal mill further comprises a controller electrically connected with the fire detector and the gas gate valve. Therefore, the fire detector detects a fire and sends out a signal as an opening condition of the carbon dioxide gas gate valve, so that spontaneous combustion or deflagration of the coal mill is quickly intervened, and jump milling of the coal mill is avoided or accidents are effectively prevented from expanding. Carbon dioxide is adopted as an anti-explosion and fire extinguishing medium of the coal mill, so that explosion accidents of the coal mill of a coal-fired power plant can be more effectively prevented, and accidents such as spontaneous combustion and ignition of pulverized coal in the coal mill can be timely eliminated. The coal mill fire extinguishing system is flexible in arrangement, and the operation reliability of power plant equipment is improved.

The utility model discloses an explosion-proof energy-saving motor, and relates to the technical field of motors. The anti-explosion energy-saving motor comprises a middle shell and a rear shell fixedly installed on the side face of the middle shell, and first heat exchange grooves are formed in the rear shell at equal intervals. Through the arrangement of the second heat exchange groove, the first heat exchange groove and the like, water can circularly flow in the motor shell by starting the circulating water pump, heat generated by the motor is exchanged, then the water inlet pipe is cooled through the semiconductor chilling plate, the water circularly flowing in the motor is cooled, the motor can be quickly cooled, and the service life of the motor is prolonged. And after the communication hose is detached, circulating water externally stored by the first water pipe connector and the second water pipe connector dissipates heat in the motor shell, so that the semiconductor chilling plate and the fan radiator can be separated, heat dissipation can be independently realized, and meanwhile, external circulating heat exchange water can be used for daily life, industrial production and the like. Electric energy is saved, and energy conservation and environmental protection are enhanced.

The invention discloses acid-base-resistant explosion-proof ink and a preparation method thereof, and belongs to the technical field of modified ink, firstly, the acid-base-resistant explosion-proof ink is prepared from the following raw materials in parts by mass: 55 to 65 parts of low-melting-point glass powder, 17.5 to 22.5 parts of copper-chromium black agent, 17.5 to 22.5 parts of varnish, 8 to 10 parts of acid-base-resistant aid, 0.5 to 1 part of flatting agent and 0.5 to 1 part of defoaming agent. According to the acid-alkali-resistant explosion-proof ink and the preparation method thereof, the prepared acid-alkali-resistant explosion-proof ink is printed on glass through a silk-screen printing technology and then cured to form a layer of ink film, it is detected that the glass loaded with the ink film is cured to show excellent explosion-proof performance, and further, the anti-explosion effect is good. An ink film formed by curing the ink shows excellent acid and alkali resistance, and the service life and the use scene of cured glass loaded with the acid and alkali resistant explosion-proof ink are prolonged and expanded.

The utility model relates to the technical field of TOPCon solar cells, in particular to a novel TOPCon solar cell, which comprises a TOPCon solar cell mechanism and an explosion-proof mechanism, the explosion-proof mechanism is mounted on the TOPCon solar cell mechanism, a cell cover main body is mounted at the top end of the explosion-proof mechanism, an electrode main body is mounted at the top end of the cell cover main body, and the electrode main body is mounted at the top end of the explosion-proof mechanism. The TOPCon solar cell module comprises a first antireflection film, a purification layer is arranged at the top end of the first antireflection film, a P-type emitting electrode is arranged at the top end of the purification layer, a first oxidation film layer is arranged at the top end of the P-type emitting electrode, and an N-type silicon wafer substrate is arranged at the top end of the first oxidation film layer. According to the explosion-proof mechanism, firstly, the insulating layer is made of polyethylene, so that the explosion-proof mechanism has a good insulating effect through the insulating layer, and meanwhile, the flame-retardant layer is made of rock wool, so that the explosion-proof mechanism has a good flame-retardant effect.