5results about How to "Good high pressure" patented technology

This invention relates to the field of split-gate MOS technology, and discloses a novel split-gate MOS device and its fabrication method, comprising: a substrate with a heavily N-type doped region at the bottom layer; a drain electrode on the lower surface of the heavily N-type doped region; an N-type buffer region on the upper surface of the heavily N-type doped region; a P-type well region and an N-type well region on the upper surface of the N-type buffer region, with the P-type well regions located on both sides of the N-type well region; a split-gate region on the upper surface of the N-type well region, the split-gate region being a trench-type structure; the lower surface of the split-gate region being lower than the upper surface of the P-type well region; lightly P-type doped regions on the upper surfaces of the N-type and P-type well regions, located on both sides of the split-gate region and in contact with it; an N-type source region on the upper surface of the lightly P-type doped region, located on both sides of the split-gate region and in contact with it; a source electrode on the upper surface of the N-type source region; and a gate electrode on the upper surface of the split-gate region. This split-gate MOS achieves low loss and other effects.

The invention relates to the technical field of drilling tools, in particular to a bit pressure regulation and control directional drilling system and method suitable for carbon dioxide yield increase or burying, and the system comprises an upper drill column, an azimuth angle control assembly and a single-bend screw drill which are sequentially connected from top to bottom; the azimuth angle control assembly comprises a barrel, the upper end of the barrel is connected with the upper drill column, and the lower end of the barrel is connected with the single-bend screw drill. The inner wall of the barrel is connected with at least one contact block, and the contact block is in contact with the peripheral surface of the upper drill column to form at least one group of friction pair; the friction pair generates radial pressing force under the action of bit pressure applied to the upper drill column, and therefore adjustable circumferential friction torque is provided and used for controlling the tool face azimuth angle of the single-bend screw drill. No electronic or hydraulic control is needed, and stable switching of tool face angles can be achieved only by adjusting bit pressure in a grading mode.

The present invention relates to the technical field of rubber pads, and in particular to a vehicle rubber pad with expansion shock absorption, including a bottom plate, the bottom plate is made of polytetrafluoroethylene to ensure the stability of the rubber pad, the buffer layer made of natural latex has high elasticity, and the rubber film has excellent flex resistance, shock resistance and creep resistance, and can effectively absorb energy, and the sealing ring made of butyl rubber generates heat through the mutual friction of metal particles during vibration, and heats the hydrogen in the hydrogen tank through the sealing ring, thereby achieving the effect of expansion, and can effectively suppress the problem that the material rubber pad cannot withstand due to excessive vibration intensity, and the telescopic mechanism increases the friction coefficient between the engine and the rubber pad through the telescopic block while increasing the buffering effect, and the silencer hole can effectively reduce the diffusion of sound. The present invention has a simple structure, effectively increases the buffering effect, and is suitable for promotion.

The utility model relates to a submarine cable fault on-line monitoring system which comprises a measuring optical fiber and a distributed optical fiber monitoring system. The distributed optical fiber monitoring system comprises an upper monitoring host, a monitoring unmanned aerial vehicle and a monitoring unit. The monitoring unit comprises a plurality of convex joints, and a combined sensor module used for monitoring submarine cable state parameters, an MCU and a communication module are packaged in a joint cavity of each convex joint; a coding unit is arranged in the MCU; the communication module is in communication connection with an upper monitoring host by taking a measuring optical fiber as a signal transmission channel so as to realize data transmission; the monitoring unmanned aerial vehicle can be in wireless communication connection with the monitoring unmanned aerial vehicle entering the communication range so as to realize data transmission; and the upper monitoring host end is also provided with a monitoring unmanned aerial vehicle docking station for performing data transmission with the returning monitoring unmanned aerial vehicle. The system is high in use reliability, convenient to operate, good in data anti-collision and encryption performance, time-saving and labor-saving, convenient to manage, and capable of saving a large amount of manpower and material resources.