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A dynamic calibration device and calibration method for an open water dynamic instrument

A dynamic calibration and hydrodynamic technology, applied in measuring devices, calibration/testing of force/torque/power measuring instruments, instruments, etc., can solve problems such as differences in torque coefficients

Active Publication Date: 2020-07-07
CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In static calibration, there is no friction generated by the rotation of the shaft, which makes the torque coefficient obtained by static calibration different from that in actual test use.

Method used

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  • A dynamic calibration device and calibration method for an open water dynamic instrument
  • A dynamic calibration device and calibration method for an open water dynamic instrument
  • A dynamic calibration device and calibration method for an open water dynamic instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The thrust calibration range of the open water dynamic instrument 14 is 0-250N, and the torque calibration range is 0-10N·m. The parameter values ​​for each test are set as shown in the table below.

[0057] Table 1 Test parameter value setting table

[0058] test count 1 2 3 4 5 6 7 8 9 10 Thrust / N 25 50 75 100 125 150 175 200 225 250 Torque / N·m 1 2 3 4 5 6 7 8 9 10 Servo motor speed / rpm 300 300 300 300 300 300 300 300 300 300 Speed ​​of open water dynamic instrument / rpm 240 240 240 240 240 240 240 240 240 240

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Abstract

The invention relates to a dynamic calibration device for an open water dynamometer and a calibration method thereof. The dynamic calibration device for the open water dynamometer comprises a supporting base; supporting frames are mounted at intervals at the upper part of the supporting base; a movable base is mounted on the inner wall face of one supporting frame, and fastening is carried out onthe outer wall face of the supporting frame by a pan head positioning screw; a servo motor base and a thrust and torsion meter base are respectively mounted on the upper surface of the movable base bya first screw and a second screw; a servo motor is mounted on the servo motor base; the output end of the servo motor is connected with a left adaptor; the left adaptor is connected with one end of athrust and torsion meter by a left coupling; the other end of the thrust and torsion meter is connected with a right adaptor by a right coupling; and the open water dynamometer is mounted on the right adaptor. The dynamic calibration device for the open water dynamometer works stably and reliably.

Description

technical field [0001] The invention relates to the technical field of testing and testing, in particular to a dynamic calibration device for an open water dynamic instrument and a calibration method thereof. Background technique [0002] The rapidity of the ship model is one of the important performances of the ship (buoyancy, stability, sinking resistance, rapidity, seakeeping, maneuverability). In the rapidity research method, the tank open water test of the ship propeller It is an indispensable means to check and verify the theoretical method. The open water test of the propeller is carried out in conjunction with the self-propulsion test, which can be used to analyze the propulsion efficiency components, compare the advantages and disadvantages of various design schemes, and facilitate the selection of the best propeller. [0003] The ship propeller open water dynamometer is the basic instrument for the test of the ship propeller tank. The accuracy of the test data is o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L25/00
CPCG01L25/00G01L25/003
Inventor 孙程陈伟张隆辉郑宏
Owner CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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