3results about How to "Prevent explosion accidents" patented technology

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 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.

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℃.