36results about How to "Guaranteed foaming effect" patented technology

The invention provides a carbon dioxide foam injecting device of an oil well and relates to a mechanical device in an oil mine field. The carbon dioxide foam injecting device is composed of a cylinder body, a carbon dioxide inlet, a dosing port and a mixed liquid outlet. One end of the cylinder body is provided with the carbon dioxide inlet, the other end of the cylinder body is provided with the mixed liquid outlet, a side wall at one end of the cylinder body close to the carbon dioxide inlet is provided with the dosing port. The carbon dioxide inlet in the cylinder body is connected with a spraying pipe, and a stirring paddle is arranged on a fixing frame from the spraying pipe to a mixed liquid outlet space. The carbon dioxide foam injecting device of the oil well is novel in structure, low in construction cost and high-pressure-resisting, the cylinder body is made of stainless steel, and the material is OCr18Ni9 and can bear pressure of 25 MPa. Efficient flame retardant crystallized magnesium oxide is filled in a heater, an electric heat tracing band can heat a system at the temperature of 0-150 DEG C, and a temperature sensor externally-connected temperature control cabinet performs automatic control to a working state of an electric heating pipe. The carbon dioxide foam injecting device solves the problem of frozen blocking in the carbon dioxide foam oil-displacement process and effectively ensures the foaming performance of a carbon dioxide foam system.

The invention discloses a mixed plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide. The polyurethane sound-absorbing material is prepared by using castor oil polyol and rosin ester polyol instead of petroleum-based polyol. The material has a wide range of sources and is easy to degrade. Environmental pollution is reduced, and the addition of carbon nanotubes increases the weight of the material under the same volume, which further enhances the high-frequency sound absorption effect of the material. The impregnation of graphene oxide increases the complexity of the material inside, making it have better mid-low frequency Sound absorption and compression properties. At the same time, the present invention also provides a method for preparing a mixed plant-based polyurethane porous material impregnated with carbon nanotubes and graphene oxide. Different stirring speeds are used in the material preparation process to ensure that the materials are evenly mixed, and the heat preservation treatment and drying treatment are given. The appropriate temperature value at the time and the effective temperature control not only ensure the foaming effect and drying effect, but also ensure the sound absorption and compression properties of polyurethane materials.

The invention discloses a cement foam wall structure, a manufacturing process and a foamed cement paste formula for the wall, which solves the problem of insufficient strength and toughness of the foam cement wall in the prior art, and reduces the need for on-site The key point of the equipment investment is to pour foamed cement slurry evenly in the mold with light steel keels evenly arranged, so that the cement slurry can be chemically foamed in the mold, saving the equipment that only uses physical foaming in the prior art The cost, and the addition of materials such as light steel keel, cement reinforcing agent, and reinforcing fiber, have improved the strength and toughness of the wall.