30results about How to "To achieve the effect of explosion-proof" patented technology

The invention relates to an anti-explosion electricity taking box which is applied to electricity taking of electric appliances in flammable and combustible places. The anti-explosion electricity taking box is characterized in that a box body and a box cover are included, a power socket and a magnetically-controlled switch are arranged inside the box body, a permanent magnet is arranged on the box cover, the L end of the power socket is connected with a live line through the magnetically-controlled switch, when the box cover is closed, the permanent magnet acts on the magnetically-controlled switch to enable the magnetically-controlled switch to be in a conducting state so that the power socket can be powered up, and when the box cover is opened, the permanent magnet is far away from the magnetically-controlled switch to enable the magnetically-controlled switch to be in an open circuit state so that the power socket can be powered off. The anti-explosion electricity taking box has the advantages that an electric connecting contact point of a reed switch is in a reed switch sealed environment and is isolated from the outside, the reed switch is flame resistant in itself, when a plug is plugged into the power socket or is pulled out of the power socket, the power socket is in a power-off state, hence, electric sparks are avoided, and the intrinsic safety explosion proof effect can be achieved.

The invention discloses a foldable ultra-thin glass protective cover plate with circular polarizing function, comprising ultra-thin glass, an ink frame is printed under the ultra-thin glass, an explosion-proof layer is coated under the ink frame, and an explosion-proof layer is printed under the explosion-proof layer. Nano-scale WGP polarizer, the lower part of the nano-scale WGP polarizer is coated with 1 / 4λ retardation film, the circular polarizer of the present invention does not need optical glue bonding, which not only integrates the functions of the circular polarizer, but also saves the optical glue The thickness and bonding process of the base material of the traditional circular polarizer make the function of the circular polarizer integrated with the glass cover, effectively reducing the bendable angle of the glass cover, and after bending, the circular polarizer and the glass cover are integrated. The body of the glass cover does not shift.

The invention discloses a petroleum drilling rig floor data acquisition device. An explosion-proof power supply, a sensor interface module, a data acquisition board and an instruction issuing controlcircuit board are arranged in a device box body of the petroleum drilling rig floor data acquisition device. The explosion-proof power supply is used for converting a 220V alternating-current power supply into a direct-current power supply required by a sensor and a circuit board. The sensor interface module is used for supplying power to the sensor and conducting photoelectric isolation on sensorsignals. The data acquisition circuit board is used for collecting the external sensor signals and storing the external sensor signals in real time in remote transmission. The instruction issuing control circuit board is used for controlling an instruction issuing device. The device can stably work on a severe cold drilling platform, is resistant to explosion, low in cost, high in stability and high in transmission rate, integrates collection, storage, transmission and control functions, and can be applied to various analog and digital sensors.

The invention discloses an anti-explosion torch. The anti-explosion torch comprises a connecting flange, a gas mixing pipeline and a torch head. A cooling gas channel is arranged in the middle of the torch head and is vertically through. An annular cavity is defined by a shell of the torch head and the cooling gas channel. The annular cavity, heat dissipation flow division pipes and the gas mixing pipeline are sequentially connected and communicate with one another. The heat dissipation flow division pipes are annularly distributed. The gas mixing pipeline is filled with a low-temperature flame-arresting net. The annular cavity is filled with a high-temperature flame-arresting net. The cooling gas channel and the heat dissipation flow division pipes play a role in cooling. The low-temperature flame-arresting net and the high-temperature flame-arresting net can prevent an explosion caused by pipeline backfire in the combustion process. Once the explosion happens, cooling gas enters the explosion region, the high temperature generated due to the explosion is lowered through cooling, high pressure generated due to the explosion is relieved through the low-temperature flame-arresting net and the high-temperature flame-arresting net, and the pressure and the temperature of the gas mixing pipeline are within the normal range, so that the anti-explosion effect is achieved. Air inlets around a rectifying air inflow pipe are formed between the gas mixing pipeline and the torch head and matched with the heat dissipation flow division pipes to play a role in airflow adjustment and sound attenuation.