55results about How to "Data results are reliable" patented technology

The invention discloses a cutter jumping volume and blade initial angle measuring method and device. By means of the method and the device, the spindle jumping volume measurement and the blade initial angle measurement can be completed synchronously. The cutter handle jumping volume and the cutter tooth jumping volume are acquired through two laser displacement sensors simultaneously. Data of the cutter handle jumping volume are used for calculating the cutter jumping volume, and data of the cutter tooth jumping volume and data of the cutter handle jumping volume are used for determining the blade initial angle simultaneously. Measurement angles are processed by a principal computer through serial port communication. The cutter jumping amount is obtained directly through calculation of the difference between the crest and the trough through data acquired by the laser displacement sensors at the position of the handle; the blade initial angle is obtained by calculation of the difference between the crest phases of two groups of data acquired through the laser displacement sensors at the positions of the handle and the blade.

The invention discloses a towed underwater geological electrical method detection system and a method. The system includes: an underwater electrical cable, simple underwater electrodes, water pressuremeasurement and sensing units, an electrical cable floating and sinking unit, an underwater GPS positioning system, an inflator, an electrical method data collection and storage module and a data processing module. The underwater electrical cable is fixed with the electrical cable floating and sinking unit. The electrical cable floating and sinking unit is connected with the inflator. The underwater electrical cable is connected with the electrical method data collection and storage module and the data processing module in turn. The simple underwater electrodes and the water pressure measurement and sensing units are fixed on the underwater electrical cable. The underwater GPS positioning system includes responders, a shipboard transducer and a GPS. The responders are fixed at simple underwater electrodes of a front part, a middle part and a tail part on the underwater electrical cable. The responders are connected with the shipboard transducer in a wireless manner. The GPS is fixed on a tugboat. The towed underwater geoelectrical detection method and the method provided by the invention systematically solve the deficiencies and the problems still existing in current underwater geological electrical method detection, and have good application prospects.

The invention relates to a device for on-line monitoring of vacuum leakproofness of a steam turbine based on a gas state equation and a running method. At present, on-line monitoring of leakproofnessof a field vacuum system cannot be performed. In the device for on-line monitoring of vacuum leakproofness of a steam turbine based on a gas state equation, a condenser is connected with a vacuum pumpthrough a No.1 pipeline, and a vacuum breaking valve is mounted on the No.1 pipeline; the vacuum pump is connected with a steam-water separation device; the steam-water separation device is connectedwith a gas collection device through a No.2 pipeline, a steam-water separation device safety valve, a steam-water separation device air bleeding regulating valve and a gas collection device air inletregulating valve are mounted on the No.2 pipeline, the gas collection device is connected with the vacuum pump through a No.3 pipeline, and a gas collection device vacuumizing regulating valve is mounted on the No.3 pipeline; and a gas collection device pressure measuring point and a gas collection device temperature measuring point are arranged on the gas collection device, the gas collection device is connected with an operator stator, and the operator station is provided with a timer. The device provided by the invention is used for on-line monitoring of vacuum leakproofness of the steam turbine, and facilitates knowing of the running state of a unit in time.