49results about How to "Does not affect distribution" patented technology

This invention relates to a crack induce test method and its device of cement base material, which adopts a frame with inner isolation board with bolts to induce the cement materials to crack rapidly. It fills cement materials between the isolation board and the frame and its bolts are covered in the cement materials. The top end of the isolation plate is exposed outside the base materials and its bottom end is in the same plane with the down part of the frame.

The invention provides a loudspeaker, which includes an upper cover, a lower cover and a sounding unit, the upper cover and the lower cover are fixedly connected to form a receiving cavity, the sounding unit is installed in the receiving cavity, and the loudspeaker also includes a A raised structure, the raised structure includes opposite first side walls and second side walls, the sounding unit includes a sound diaphragm and a basin frame, the lower surface of the sound diaphragm is attached to the upper surface of the basin frame, and the sound diaphragm The side of the basin, the side of the pot frame and the first side wall of the raised structure form a glue groove; the upper cover is provided with a sound outlet and a sound channel, and the outer end opening of the sound channel communicates with the sound outlet The bottom of the inner opening of the sound outlet channel is connected to the bottom of the second side wall, and the second side wall partially blocks the inner end opening of the sound outlet channel. The setting of the protruding structure in the present invention can not only play a waterproof role, but also its height is lower than that of the support beam, which basically does not affect the emission of sound.

This application discloses a method and system for controlling the shape of the edge of a strip based on induction heating. By means of a double closed-loop control loop, the shape control loop and the temperature control loop are respectively used for adjustment, which is different from the traditional single closed-loop control loop. Compared, the debugging time is short, the control precision is high, and the anti-interference ability is strong. Through the plate shape control loop, after the plate shape deviation is calculated by the controller, it is output to the temperature control loop as the temperature setting value. In the temperature control loop, by measuring the temperature of the work rolls, the temperature rise of the work rolls can be directly controlled, thereby controlling the thermal expansion of the work rolls, changing the reduction of the edge of the work rolls, and finally realizing the improvement of the shape of the edge of the strip.

The invention provides a detachable internally-arranged infrared temperature measuring device for the GIS. The detachable internally-arranged infrared temperature measuring device for the GIS comprises an infrared perspective window, an infrared temperature measurement sensor body, a fully-sealed shell, a first installation flange, a second installation flange, a circuit protective shell and a signal amplifying and processing circuit. The infrared perspective window is connected with the infrared temperature measurement sensor body. The infrared temperature measurement sensor body is located inside the fully-sealed shell. One end of the fully-sealed shell is fixed to the GIS through the first installation flange and the other end of the fully-sealed shell and the circuit protective shell are connected through the second installation flange. The signal amplifying and processing circuit is located inside the circuit protective shell. The detachable internally-arranged infrared temperature measuring device for the GIS is flexible and detachable, the infrared temperature measurement sensor body and the fully-sealed shell are safe and independent, the sealing performance and the voltage resistant performance are good, and the infrared temperature measurement sensor body and the fully-sealed shell are installed outside a GIS air chamber, so that verification, maintenance and replacement which are conducted by an infrared temperature sensing system are facilitated under the condition that the GIS is operated; the device can be detached under the condition that normal operation of the GIS is not influenced, an internal electric field structure of the GIS is not influenced, and the requirement for the sealing performance of the GIS is satisfied.

The invention provides an antistatic composite material, a preparation method of the antistatic composite material, an antistatic shell and a purifier. The antistatic composite material is prepared from resin, an antistatic agent, a silane coupling agent and solubilizer. The antistatic composite material has the resistance being between 106 and 109 omega by limiting the content of resin, antistatic agent, silane coupling agent and solubilizer, the antistatic effect can be improved by leading the raw materials to achieve a critical running-in point, attenuation and loss of static electricity inthe antistatic composite material are accelerated, and purification of static electricity on the inner surface of a purifier shell is not influenced, so that the static electricity transferring process is not obstructed, the outer surface of the purifier shell is not influenced by the static electricity on the inner surface of the purifier shell, the problems of ash accumulation on the outer surface of the shell and impact on operator safety can be solved, and the dust collection efficiency of a purifier can be improved.