42results about How to "Avoid Burst Situations" patented technology

The invention relates to the field of refractory materials, in particular to a magnesium current stabilizer for a tundish and a preparation method thereof. A magnesium current stabilizer for tundish designed by the present invention is characterized in that it is prepared from main raw materials, dispersant, explosion-proof agent, stainless steel fiber and water, and the main raw materials include recycled magnesium raw materials 10% by weight percentage ~60%, forsterite particles 15~45%, fused magnesia fine powder 10~40%, activated alumina micropowder 3~8%, binder 1~5%; by weight percentage, dispersant accounts for the main raw material 0.1-0.5% of the main raw material, anti-explosion agent accounts for 0.1-0.5% of the main raw material, stainless steel fiber accounts for 0.5-1.5% of the main raw material, and water accounts for 4-5.5% of the main raw material; the magnesium flow stabilizer prepared by the present invention is not only difficult Cracking occurs, and has good strength and molten steel erosion resistance, and the preparation method has the characteristics of low cost and short cycle.

The invention discloses a mahjong and a manufacturing method of the mahjong. A front face of the mahjong has a name and a back face has patterns which project outwards. The back face is covered by a surface layer which covers areas projecting around patterns. The invention directly adopts the colorful surface layer around the patterns to displace the original transparent layer covering patterns on the back face of the mahjong body so as to realize the aim of protecting the patterns and avoiding crack of the transparent layer. The mahjong adopts different colors for the shaping of a main body layer, a pattern layer and the surface layer so as to lead the mahjong to be more colorful and the mahjong form to be more elegant.

The application relates to a quartz tube structure and a processing method thereof, including a quartz tube, a top piece, an opalescent flange, a main flange, a first exhaust pipe, a second exhaust pipe, an air intake pipe, a quartz ring, a top piece and a suspension ring. The head end of the tube is connected to the coaxial top piece, and the top piece is processed by lathe to form an outwardly convex arc shape. The tail end of the quartz tube is connected to the coaxial opalescent flange and the main flange in turn, and the axis of the quartz tube on the inner wall of the quartz tube is symmetrically distributed. There are two sets of plug joints, each set of plug joints includes two suspension rings arranged at intervals along the length of the quartz tube, the centerlines of the two suspension rings coincide and are parallel to the axis of the quartz tube; the center of the top piece is provided with an air inlet pipe extending outward A pair of first exhaust pipes and a pair of second exhaust pipes are arranged symmetrically with the axis of the quartz tube under the intake pipe; the outer middle part of the top sheet is connected to the outwardly extending quartz ring. The seal between the application and the connecting parts is good, the welding concentricity between the quartz tube and the milky white flange and the main flange is good, the quality is stable, and the phenomenon of bursting is effectively avoided.

The invention relates to an explosion-proof air column roll used for logistics packaging and transportation. The explosion-proof air column roll used for logistics packaging and transportation comprises an air column roll body, a winding device and a deflation device. The winding device is mounted at the rear end of the air column roll body. The deflation device is mounted at the front end of thewinding device. The air column roll body is located in the deflation device. By adoption of the explosion-proof air column roll used for logistics packaging and transportation, the problems that an existing air column roll needs to be sequentially inflated and deflated manually when needed, and the inflation and deflation process is complex; when wound after being deflated, the existing air columnroller needs to be manually wound by personnel after being pressed to be deflated, and deflation is incomplete; gas in the existing air column roll cannot be completely exhausted from deflation holeswhen the existing air column roll is pressed by the personnel, and consequentially, an explosion of the existing air column roll is caused; and when the existing air column roll is wound manually, the wrinkled air column roll has to be continuously flattened, and consequentially, time consumption is high, the labor intensity is high, and the efficiency is low are solved; and the air column roll body can be inflated conveniently and be deflated and wound automatically.

The invention discloses an intelligent pipeline connection equipment for anti-freezing and cracking of large-scale smart city industrial buildings, and relates to the technical field of pipeline connection equipment, including a sleeve and a locking assembly arranged on the sleeve. The sleeve is a hollow cylindrical structure , both sides of the sleeve are embedded with pipes, and the middle of the inner wall of the sleeve is fixedly connected with a connecting plate extending to the inside of the sleeve. There is a first cavity between the surface and the inner wall of the pipe, and a sealing assembly is arranged in the first cavity, and there is a second cavity between the outer wall of the pipe and the inner wall of the sleeve, and a vent hole is fixedly connected inside the sleeve, and the vent hole and the second The two cavities communicate with each other, and the present invention provides a storage place for ice cubes to freeze through the first cavity and the second cavity, reduces the pressure on the pipeline connection, and effectively strengthens the sealing of the pipeline connection.