5results about How to "Small installation size" patented technology

The invention belongs to the technical field of optical imaging equipment, and particularly relates to a lens driving device which comprises a base, a support, a frame and a carrier. A first direction coil and a second direction coil are respectively arranged on the base; the frame is arranged on the support, a first-direction magnet is arranged on one side of the bottom end of the frame, and after the first-direction coil is powered on, the frame and the carrier can move in the first direction relative to the support; the support is arranged on the base, a second-direction magnet is arranged on one side of the bottom end of the support, and after the second-direction coil is powered on, the support, the frame and the carrier can move in the second direction relative to the base. According to the invention, the power supply of the OIS coil is directly supplied by the built-in circuit of the base, the power supply wiring difficulty is reduced, and when the carrier moves in the first direction, the thrust of the OIS anti-shake action required by the carrier is smaller, so that the installation size of the magnet can be obviously reduced or the thrust of the OIS anti-shake action can be increased, and the lens can realize a larger-angle anti-shake effect in the first direction.

The invention discloses an ultrasonic ablation catheter with a positioning function and an ablation method, and relates to the technical field of medical instruments, and the ultrasonic ablation catheter comprises a positioning transmitting unit which comprises at least one row of sensor transmitting groups uniformly distributed along the circumferential direction and is used for transmitting position measurement ultrasound; the positioning receiving unit comprises at least one row of sensor receiving groups which are uniformly distributed along the circumferential direction and is used for receiving the position measuring ultrasound transmitted by the positioning transmitting unit; the energy generation unit is used for outputting ultrasonic ablation energy; the positioning transmitting unit, the positioning receiving unit and the energy generating unit are coaxially fixed to the catheter in the axial direction and located in the cavity of the balloon, the positions of the positioning transmitting unit and the positioning receiving unit do not need to be adjusted in the operation, operation is more convenient, and the positioning transmitting unit, the positioning receiving unit and the energy generating unit are independently arranged, so that operation is more convenient. The inner cavity of the catheter does not need to additionally penetrate through equipment for adjusting the angle of the energy generation unit, and the structural design of the catheter is simpler.

This invention belongs to the field of optical imaging equipment technology, specifically relating to a lens driving device, including a base, a frame, a carrier, and a circuit board. An AF position sensor is disposed on the outer wall of the frame and cooperates with an AF magnet disposed on the base to monitor the movement position in a third direction. The circuit board is disposed on the frame and located below the carrier. Two OIS position sensors are disposed on the circuit board and cooperate with two OIS magnets disposed on the carrier to monitor the movement position in a first direction and a second direction, respectively. An elastic connection portion is disposed on one side of the circuit board. One end of the elastic connection portion is connected to the base and electrically connected to the base's internal wiring or an external circuit. The monitoring signals from the two OIS position sensors and the AF position sensor are all output through the elastic connection portion. In this invention, the monitoring signals from all three position sensors are output through the elastic connection portion of the circuit board, facilitating position monitoring.

The present application relates to the technical field of large oil and gas field station fire fighting system, and specifically relates to a large oil and gas field station fire fighting pump pressure relief backflow detection system and a detection method, which comprises a working pipeline and a standby pipeline, the working pipeline and the standby pipeline are both provided with a fire fighting pump, the output ends of the working pipeline and the standby pipeline are both connected with a fire fighting water outlet pipeline, the fire fighting water outlet pipelines of the two are communicated through a communication pipeline, the communication pipeline is parallelly connected with a pressure relief pipeline 3 and a backflow detection pipeline, the output ends of the pressure relief pipeline and the backflow detection pipeline are both merged into the same pipeline and are communicated with a fire fighting water tank or a fire fighting pool; the present application adopts an integrated installation process, solves the problem of system overpressure in the operation process of the automatic control fire fighting system of the large oil and gas station, and meets the requirements of flow and pressure detection, fire hydrant testing and the like in the daily maintenance of the fire fighting system.

The utility model discloses a gear box off-line filtering device and a wind power generation device. The gear box off-line filtering device comprises a filtering mechanism, a flow control valve and a controller, the filtering mechanism is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with a lubricating system of a gear box through a liquid inlet pipe, the liquid outlet is communicated with an oil tank of the gear box through a liquid outlet pipe, and the flow control valve is communicated with the liquid inlet pipe. The controller is arranged between the filtering mechanism and the lubricating system, electrically connected with the flow control valve and used for controlling opening and closing of the flow control valve and flow adjustment. According to the technical scheme, the flow control valve and the controller can be additionally arranged on the basis that the gear box is provided with the lubricating system to achieve the filtering function, components such as an oil pump and a motor do not need to be installed, system configuration is simplified, the installation size is reduced, and cost is reduced.