Sealing test method for stern shaft sealing devices
A technology of sealing device and sealing test, which is applied in the direction of using liquid/vacuum degree to measure liquid tightness, and detecting the appearance of fluid at the leakage point, etc., can solve problems such as economic loss, and achieve high work efficiency and convenient construction.
Active Publication Date: 2018-09-04
中国船舶集团渤海造船有限公司
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Problems solved by technology
During the construction of ship products, the tightness inspection test is generally only carried out on the stern shaft sealing device in the infield, and the tightness inspection test is not carried out on the matching state of the stern shaft sealing device after installation. If seawater leakage occurs in the stern shaft sealing device after the ship is launched The phenomenon directly affects the operation safety of the ship, and some ships even need to re-board the berth or enter the dock to deal with the stern shaft sealing device, which will cause great economic losses
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[0019] As shown in the figure, a propeller 1 is connected to the outer end of the stern shaft 4 on the marine shafting parts, and the rear hub 2 of the stern shaft, the hub connecting sleeve 5, the front hub 6 of the stern shaft and the The stern shaft sealing device 8, the stern shaft rear bearing 3 is arranged in the stern shaft rear hub, the stern shaft front bearing 7 is arranged in the stern shaft front hub, and the tightness test tool 9 is set between the propeller and the stern shaft rear hub On the stern shaft of the stern shaft, the inner side is installed and fastened to the stern end face of the rear bearing of the stern shaft. The tightness test tool forms a closed chamber with the shafting components and the stern shaft sealing device. The chamber communicates with the connecting pipe 12 through the plugging cock 10 Pressure pump 11;
[0020] A semi-completed flat sealing gland 13 and a semi-completed axial sealing gland 16 are provided on the tightness test tool,...
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The invention provides a sealing test method for stern shaft sealing devices. A sealing test of a stern shaft sealing device can be carried out after the stern shaft sealing device is installed at theslipway or dock stage; a tightness test tooling is installed on the end face of a rear bearing of a stern shaft and forms an airtight chamber with the stern shaft sealing device and shafting members;pipelines corresponding to the upper and lower sea water interface of the stern shaft sealing device are dismantled; the pipelines are externally connected to a water inlet and are connected to a pressure pump; and a plugging cock is installed in a water outlet pipeline to form an airtight loop. Tightness inspection experiment works at the slipway or dock stage can be carried out by fastening thetightness test tooling on the end face of the rear bearing of the stern shaft through an installation stud between the bearing and a shaft bossing, dismantling the pipelines corresponding to the upper and lower sea water interface of the stern shaft sealing device, externally connecting the pipelines to the water inlet, connecting the pipelines to the pressure pump, and installing the plugging cock in the water outlet pipeline. The method can be used as an application of a tightness test method for the stern shaft sealing devices.
Description
technical field [0001] The invention relates to a sealing test method of a sealing device, in particular to a sealing test method of a stern shaft sealing device using seawater as a cooling medium. Background technique [0002] The sealing state of the ship's stern shaft sealing device after installation is directly related to the safety and reliability of the shafting and ship operation. Shafting equipment such as the stern shaft, bearings and parts of the stern shaft seal device of the ship shaft system that uses seawater as the cooling medium is in direct contact with seawater. The function of the stern shaft seal device is to prevent seawater from entering the cabin through the gap between the stern shaft and the bearing within, and ensure the safety and reliability of the ship's shafting to operate. During the construction of ship products, the tightness inspection test is generally only carried out on the stern shaft sealing device in the infield, and the tightness in...
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IPC IPC(8): G01M3/04
CPCG01M3/04
Inventor 王波戴俊崔赫高燕鲍洪亮吴超窦旭
Owner 中国船舶集团渤海造船有限公司