Online detection device for hydraulic pipeline washing oil for ship

Abstract

The invention relates to an online detection device for a hydraulic pipeline washing oil for a ship. According to the innovative points, the online detection device is mounted on a main oil path of a ship pipeline and is located in front of an entrance of a pipeline washing pump station; the online detection device comprises an online sampling assembly, a capacitive sensor module, a photoelectric sensor module and a signal processing system, wherein the online sampling assembly comprises a pair of check valves mounted on the main oil path and a sampling pipe arranged between the liquid outlet sides of the two check valves; the capacitive sensor module is used for detecting the water content; the photoelectric sensor module is used for detecting solid impurities; output signals of a capacitance detection circuit and a photoelectric detection circuit are connected into the signal processing system. The online detection device has the advantages that dielectric constants of various impurities in the washing oil are measured by the capacitive sensor module and the photoelectric sensor module; the cleanliness of the washing oil is calibrated by the processing of the signal processing system so as to judge a washing effect and feed the effect back to workers in time; the use amount of the washing oil is reduced and the washing period is shortened.

Description

technical field [0001] The invention relates to a sampling and collecting device for marine hydraulic pipeline cleaning oil, in particular to an online detection device for marine hydraulic pipeline cleaning oil. Background technique [0002] my country's shipbuilding industry has always paid too much attention to shipbuilding, while ignoring the research and development and manufacturing of ship supporting facilities. The lack of research and development of supporting facilities has restricted the development of my country's shipbuilding industry. The value of ship supporting products accounts for about two-thirds of the total value of ships, and plays a pivotal role in the shipbuilding industry. Improving the international competitiveness of the ship supporting industry is a necessary condition for building a world-class shipbuilding power. [0003] As we all know, the fuel, lubricating oil and hydraulic piping systems must be oiled and cleaned before being installed on bo...

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Problems solved by technology

[0006] (1) The national utility model patent [CN202330282U] proposes a photoelectric liquid impurity content tester, which measures the impurity content in the liquid through the ultraviolet light beam formed between the ultraviolet emitting head and the ultraviolet receiving head. , the more ultraviolet light is blocked, and vice versa, the less, but the ultraviolet emitting head and receiving head are not easy to install in the cleaning pipeline, and the oil contains a variety of impurities, and various impurities have different absorption of ultraviolet light. Compounds with poor UV absorption have low sensitivity

[0007] (2) Research on the key technology of liquid impurity detection based on video [Wang Zhiguo Master's Thesis]. This paper completed the construction of the imaging system, and gave the software system inspection framework; analyzed the characteristics of the liquid image, and realized the segmentation and positioning of the liquid area; After analyzing and comparing various motion detection methods, according to the characteristics of liquid sequence images, a target extraction algorithm based on the frame difference of three consecutive frames of images is proposed. This algorithm has the characteristics of good real-time performance and high detection rate, but considering the actual Working environment and technical indicators. This method has high requirements for cameras and image acquisition cards. The light intensity has a great influence on the results. It has high requirements for the working environment, and the obtained data is not stable enough to meet the actual needs of the factory.

[0008] (3) The application of photoelectric sensors in the detection of impurities in hydraulic oil [Shi Enhancement, Xie Jian Modern Electronic Technology 2004 27 (12)] It is proposed that when light is injected into a hydraulic oil sample containing impurities, the transmitted light weakens due to scattering and absorption. , detect the amount of transmitted light after attenuation, and determine the content of impurities according to the amount of transmitted light, but it only proposes this method, and does not involve an effective technical solution that is more suitable for ship pipeline cleaning, and cannot detect the content of water. The use of fields has its pitfalls

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