Device for realizing scour corrosion test of impeller of sea water pump

A technology of erosion corrosion and test equipment, which is applied in the directions of measuring equipment, weather resistance/light resistance/corrosion resistance, and wear resistance testing, etc., can solve the problems of untargeted measures for impeller protection, untargeted suggestions for impeller manufacturing and testing processes, Problems such as impeller running status cannot be simulated to achieve the effect of shortening the research cycle and reducing research costs

Pending Publication Date: 2019-06-18
中国船舶重工集团公司第七0四研究所
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Problems solved by technology

However, the material corrosion test device cannot simulate the real operating state of the impeller, cannot determine the initial location of corrosion in the seawat

Method used

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  • Device for realizing scour corrosion test of impeller of sea water pump
  • Device for realizing scour corrosion test of impeller of sea water pump

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[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] like figure 1 As shown in the figure, a device for realizing the erosion corrosion test of a seawater pump impeller is composed of an impeller installation module, a corrosion environment simulation module, an erosion condition simulation module, an acceleration module and corresponding auxiliary components.

[0021] The impeller installation module includes a variable frequency drive 1, a variable frequency motor 2, an auxiliary support bearing seat 3-1, an installation shaft 3-2, and the like. The corrosive environment simulation module includes a sealing device 4, a water tank 5, a measured impeller 6, a flushing nozzle 7, a blowdown valve 18, and the like. The scouring condition simulation module includes a flow meter 8, a shrinking pipe section 9, a rectifying device 10, a sand input device 11, a regulating valve 12, a circulating water pump ...

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Abstract

The invention relates to a device for realizing the scour corrosion test of the impeller of a sea water pump. The device is composed of an impeller installation module, a corrosion environment simulation module, a scour condition simulation module and an acceleration module; an impeller under test is arranged in the water tank of the corrosion environment simulation module; the water tank of the corrosion environment simulation module is filled with artificial seawater; the impeller under test is installed on the installation shaft of the impeller installation module and is connected with a variable-frequency motor and a variable-frequency driver through the installation shaft; a scour nozzle of the corrosion environment simulation module, which is corresponding to the impeller under test,is arranged in the water tank; and the scour nozzle is connected with the output opening of a circulating water pump through the flowmeter, shrinking pipe section, rectifying device, sand injection device and regulating valve of the scour condition simulation module; the input opening of the circulating water pump is connected with the bottom water outlet of the water tank through a pipeline anda filtering device; and the circulating water pump is connected with a circulating water pump variable-frequency motor and a variable-frequency driver. With the device of the invention adopted, the real working environment of the impeller of the sea water pump can be simulated, the scour corrosion tests of impellers of various types and specifications can be carried out, and the reliability of theimpellers can be evaluated.

Description

technical field [0001] The invention relates to a test device for erosion and corrosion of an impeller of a sea water pump, in particular to a test device for analyzing the corrosion factors of the impeller and accelerating the corrosion of the impeller. Background technique [0002] The research of marine equipment technology has always been a focus of various countries. Ocean survey, development of marine oil and gas resources, marine life-saving, and naval military are all inseparable from seawater hydraulic technology. As a key power component of the seawater hydraulic system, the seawater pump's life determines the maintenance and service cycle of the entire seawater hydraulic system. Statistical results show that there is a 50% probability of corrosion of the pump shaft and impeller during the maintenance process of seawater pumps, and the impeller will be seriously damaged after about 10-12 months of use. Therefore, it is of great significance to carry out research o...

Claims

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Application Information

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IPC IPC(8): G01N3/56G01N17/00
Inventor 钟焱李国平周璞冯海军
Owner 中国船舶重工集团公司第七0四研究所
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