Current detecting device for ship stern shaft

A technology of current detection device and stern shaft, which is applied in the field of electrical quantity detection, to achieve the effect of improving corrosion protection effect, broad application prospect and wide application range

Active Publication Date: 2012-06-20
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cathodic protection effect of the propeller is closely related to the current flowing through the propeller, that is, the stern shaft. The current general-purpose current detection equipment can completely reflect the current change without changing the system state, which brings certain technical obstacles to the research on the protection state of the propeller.

Method used

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  • Current detecting device for ship stern shaft
  • Current detecting device for ship stern shaft
  • Current detecting device for ship stern shaft

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Experimental program
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Embodiment

[0015] The main structure of the present embodiment includes a measured hull 1, a drive motor 2, a speed reducer 3, a bearing seat 4, a sensor circuit unit 5, a data acquisition circuit unit 6, an information processing or a computer 7 and a propeller 8, in the measured hull 1 The rear section of the bearing seat 4 on the drive shaft or the ship's stern shaft 9 is fixedly installed with a sensor circuit unit 5, and the sensor circuit unit 5 adopts a current sensor finished product or a sensor designed by itself; the sensor circuit unit 5 and the ship's stern shaft 9 The installation method is fixed connection by welding or fixed connection by slip ring to realize the smooth flow of weak current; the data acquisition circuit unit 6 is installed in the space of the hardware box of the computer 7 or is separately designed as an all-in-one machine with a box structure through the conventional communication The interface circuit or ordinary interface is electrically connected with t...

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PUM

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Abstract

The invention belongs to the technical field of electric quantity detection, and particularly relates to a current detecting device for a ship stern shaft. A sensor circuit unit is fixedly mounted at the rear end of a bearing block of the ship stern shaft to be detected and is provided with a finished or self-designed current sensor; the sensor circuit unit is fixedly connected with the ship stern shaft by means of welding or through a sliding ring to realize smoothness of weak current; a data acquisition circuit unit is mounted in a space of a computer hardware case and respectively electrically communicated with a computer and the sensor circuit unit through communication interface circuits; and the current of the stern shaft passes through a propeller, returns to a hull through joints of a driving motor, a speed reducer and the bearing blocks, and then passes through the sensor circuit unit and the data acquisition circuit unit, so that data are processed and displayed by the aid of self-programming software installed in a computer. The current detecting device is simple in overall structure, reliable in principle, low in manufacturing cost, convenient in use and operation, accurate in data detection, wide in application range and applicable to detecting the current of stern shafts of various ships.

Description

Technical field: [0001] The invention belongs to the technical field of electrical quantity detection, and relates to a ship stern shaft current detection device, which is suitable for the current detection occasion of the ship stern shaft. By setting a current detection circuit and a signal processing and control circuit with a single-chip microcomputer as the core, it can be analyzed in related software With the support of the system, the real-time detection of the ship's stern shaft current is realized. Background technique: [0002] At present, low-end or high-end current-sensing circuits are commonly used to directly detect the current of the stern shaft of a ship. The small current-sensing resistors of the low-end current-sensing circuit are connected in series in the loop. The voltage difference at the end can get the current passing through. The disadvantage of this detection method is that the small resistance connected in series to the loop changes the inherent sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
Inventor 张繁闫永贵邢少华
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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