7results about How to "Prevent explosion accidents" patented technology

The invention discloses a high-temperature heat storage oxidation low-concentration gas explosion limit testing device and method based on burning explosion pressure, and belongs to the field of coal mine safety. The device comprises a high-temperature heating cavity, a pressure measuring system, an air supply system and a vacuum extraction system. The pressure measuring system is installed at an opening in the upper portion of the high-temperature heating cavity, and a cooling assembly and a heat insulation assembly are matched with a water-cooled pressure sensor to measure the high-temperature low-concentration gas heat storage oxidation explosion pressure. According to the gas supply system, a high-pressure gas mixing tank is controlled by an electromagnetic valve, and mixed gas is pumped into the high-temperature heating cavity from an opening in the lower portion of the high-temperature heating cavity through a multi-hole-channel compressed gas nozzle. And a side opening of the high-temperature heating cavity is sequentially connected with a cooling coil of a vacuum extraction system, a water-cooling clamp sheath and a vacuum pump. The problem of vacuum extraction in a high-temperature environment is solved, repeated measurement of a pressure evolution curve of coal mine extracted gas from an oxidation reaction to a burning explosion process in the high-temperature environment is realized, and the explosion limit of coal mine extracted low-concentration gas in a range of room temperature to 1200 DEG C is accurately obtained.

The utility model discloses a bag type dust collector for gas purification of a steelmaking converter. The ash bucket is of a double-layer ash bucket structure with an inner ash bucket (4) and an outer ash bucket (3); an ash bucket partition plate (5) is arranged between the inner ash bucket (4) and the outer ash bucket (3); an inlet of the air inlet pipe (1) is formed in the lower part of the middle box body (8) or the side surface of the upper part of the outer ash bucket (3); an inner ash bucket ring beam (6) is arranged in a cavity between the lower part of the filter element (9) in the middle box body (8) and the upper part of the outer ash bucket (3) and the air inlet pipe (1); and a passageway partition plate (7) is arranged in an arch-shaped cavity between the upper part of the inner ash bucket ring beam (6) opposite to the air inlet pipe (1), the outside of a filtering area in the middle box body (8) and a wall plate of the middle box body (8). According to the utility model, not only can the scouring of airflow to the filter bag be reduced, but also coal gas or oxygen-containing flue gas remained in the dust remover can be driven in real time, the contact and mixing probability of the coal gas and oxygen is effectively reduced, the occurrence of burning and explosion accidents is avoided, and the safety of equipment is obviously improved. The device is safe, efficient, energy-saving and economical.

The utility model relates to a VOC (volatile organic compound) gas pipeline accessory with fire suppression and explosion prevention functions. The VOC gas pipeline accessory comprises a pipeline, a waste gas collecting hood, a branch pipe, a waste gas collecting hose, a temperature sensor, a pressure sensor, a gas component analyzer (combustible gas, methane, non-methane hydrocarbon, oxygen content and the like), a fire suppression material pipeline, an automatic valve with an interlocking function and a remote transmission alarm device. Through simple equipment transformation and operation adjustment, the device not only can analyze components of pipeline waste gas, monitor pressure and temperature parameters of the pipeline and set alarm values, and give an alarm when danger occurs and an alarm standard is reached, but also can interlock fire suppression materials such as inert gas with pressure to quickly enrich the space in the pipeline to suppress burning explosion, so that the safety of the pipeline is improved. The system can quickly and accurately respond to dangers, prevent accidents from happening and expanding, achieve source control of burning and explosion, effectively prevent burning and explosion accidents, or reduce accident loss, create safe rescue conditions and achieve reliable accident control effect.

The utility model relates to an anti-static device for a vibrating screen. The anti-static device comprises a vibration eliminator, a monitor and a sub-control box, a first interface of the monitor is connected with the vibration eliminator through a first signal cable, and a second interface of the monitor is connected with the vibration eliminator through an instrument air pipe; a third interface of the monitor is connected with the monitor through a second signal cable; and a fourth interface of the monitor is connected with the first filtering pressure reducing valve. The utility model aims to provide the anti-static device for the vibrating screen, which aims to overcome the existing defects, effectively eliminate static electricity and prevent the occurrence of fire blast accidents.

The utility model discloses an inverted scraper conveyor for recycling lithium batteries. A plurality of scrapers are uniformly connected to the periphery of a transmission chain; the guide plate is located in the shell assembly, fixedly connected with a lower side bottom plate of the shell assembly through a lower side support, in contact fit with the lower portion of the transmission chain located on the lower side and used for guiding the transmission chain. The baffle is located in the upper side space in the shell assembly and located in the area below the feeding port, the outer side end edge of the baffle is fixedly connected with a side end plate of the shell assembly, and the baffle is located on the upper portion of the transmission chain on the upper side and used for preventing falling materials from entering the transmission chain. The filling port and the extraction port are formed in a side end plate of the shell assembly in a spaced mode, an air inlet one-way valve is installed in the filling port, and an air outlet one-way valve is installed in the extraction port. The conveyor can meet the requirement for material conveying in the lithium battery recycling process, the probability of clamping stagnation can be remarkably reduced, the conveying efficiency can be remarkably improved, and the maintenance frequency can be effectively reduced.

The utility model relates to the technical field of lithium batteries, and provides a discharging device suitable for a cylindrical lithium battery, which comprises a discharging box body, a filler frame body is arranged in the discharging box body, graphite nodule particles are filled in the filler frame body, a liftable pressing plate is arranged at the upper position in the filler frame body, and the lower position in the filler frame body is provided with a pressure plate. A plurality of conductive copper bars are mounted in the filler frame body, one end of each conductive copper bar extends to the outer part of the filler frame body, and different pressures are applied to the graphite nodule particles through the pressing plate, so that the contact area between the graphite nodule particles and the conductive copper bars can be changed; the graphite nodule particles in the filler frame are pressurized by using a hydraulic machine, so that the contact area between the internal conductive copper bar and the graphite nodule particles is increased, the resistance can be reduced, and the advantage of low energy consumption is achieved; the batteries are arranged in the battery material frame, so that a large batch of battery discharging work can be processed at the same time, and the discharging efficiency is effectively improved.

A device and method for testing the explosion limits of low-concentration methane gas extracted at high temperatures based on combustion and explosion pressure, belonging to the field of coal mine safety, is described. The device includes a high-temperature heating chamber, a pressure measurement system, a gas supply system, and a vacuum extraction system. The pressure measurement system is installed at the upper opening of the high-temperature heating chamber and uses a cooling component and a heat insulation component in conjunction with a water-cooled pressure sensor to measure the combustion and explosion pressure of low-concentration methane gas extracted at high temperatures through combustion and explosion. The gas supply system uses a solenoid valve to control a high-pressure mixing tank and injects the mixed gas into the high-temperature heating chamber through a multi-channel compressed gas nozzle from the lower opening. The side opening of the high-temperature heating chamber is sequentially connected to the cooling coil, water-cooled jacket, and vacuum pump of the vacuum extraction system. This device solves the problem of vacuum extraction under high-temperature conditions, enabling repeated measurement of the pressure evolution curve of extracted methane gas from oxidation reaction to combustion and explosion under high-temperature conditions, and accurately obtaining the explosion limits of low-concentration methane gas extracted from coal mines within the range of room temperature to 1200℃.