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Space curved surface type underwater sealing element and mounting method

An installation method and a technology of seals, which are applied to ship components, transportation and packaging, ships, etc., can solve the problems of water ingress into the lubricating grease chamber, reduced sealing effect, and damage to threaded holes, so as to achieve good sealing effect and ensure Force stability and overall sealing effect, good watertight effect and long-term watertight performance

Pending Publication Date: 2021-12-24
JIANGNAN SHIPYARD GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the cover plates of rudder blades have reduced sealing effect during use, and there are abnormal conditions such as water entering the lubricating grease cavity, and repeated disassembly and assembly are easy to damage the threaded holes

Method used

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  • Space curved surface type underwater sealing element and mounting method
  • Space curved surface type underwater sealing element and mounting method
  • Space curved surface type underwater sealing element and mounting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment provides a space surface type underwater seal, such as Figure 1-8As shown, the seal includes a surrounding frame 1, a sealing gasket 3 and a cover plate 2 stacked in sequence. The outer edge dimensions of the surrounding frame 1, sealing gasket 3 and cover plate 2 are the same as each other. The surrounding frame 1 and The inner edge of the sealing gasket 3 has the same size, the side of the surrounding frame 1 in contact with the sealing gasket 3 has a plurality of surrounding frame grooves nested in each other, and the area where the cover plate 2 contacts with the sealing gasket 3 There are a plurality of cover plate grooves nested in each other, and the surrounding frame grooves and the cover plate grooves are both closed rings.

[0058] Specifically, such as Figure 8 As shown, the opening edge of the grease cavity 70 is fixedly connected to one end of the cavity coaming plate 7, and the other end of the cavity coaming plate 7 is fixedly connected...

Embodiment 2

[0075] This embodiment provides an installation method of a space curved surface type underwater seal, and the installation method includes the following steps:

[0076] S1: provide a surrounding frame 1, a grease cavity 70 and a space curved workpiece 8, the opening edge of the grease cavity 70 is fixedly connected to one end of the cavity coaming plate 7, and the other end of the cavity coaming plate 7 is connected to The opening edge of the space curved surface workpiece 8 is fixedly connected, and the surrounding frame 1 is fixed on the inner side of the cavity surrounding plate 7;

[0077] S2: Assemble the sealing gasket 3 and the cover plate 2 sequentially on the surrounding frame 1, the gasket through hole 31 on the sealing gasket 3 and the cover plate through hole 25 on the The threaded hole 41 corresponds through, wherein,

[0078] The dimensions of the outer edges of the surrounding frame, the sealing gasket and the cover plate are the same as each other, the dimens...

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Abstract

The invention provides a space curved surface type underwater sealing element and a mounting method. The sealing element comprises an enclosure frame, a sealing gasket and a cover plate which are sequentially overlapped, the enclosure frame and the cover plate are respectively provided with a plurality of enclosure frame grooves and cover plate grooves which are mutually sleeved, and the sealing gasket is extruded during installation and fills the enclosure frame grooves and the cover plate grooves, and therefore, a good sealing effect is achieved. Meanwhile, the pressure of lubricating grease at one side of the cover plate on the cover plate is equivalent to or greater than the pressure of seawater at the other side of the cover plate on the cover plate, so that the seawater is prevented from entering the lubricating grease cavity. When the space curved surface type underwater sealing element is mounted, the cover plate is fixed through mounting bolts and nuts, so that the sealing gasket is subjected to the pressure of the cover plate to achieve expected plastic deformation, meanwhile, stress generated in the mounting process of the cover plate is released, then the mounting bolts and the mounting nuts are dismounted one by one, and the fastening screws are mounted one by one; therefore, the stress stability and the overall sealing effect are guaranteed to the maximum extent.

Description

technical field [0001] The invention relates to the sealing technology of marine engineering structures, in particular to a space curved underwater sealing piece and an installation method. Background technique [0002] Navigating ships and marine engineering structures are often in a complex marine environment with fast flow and strong vibration, especially propellers, rudder blades, fin stabilizers, hull curved outer plates and other components, which are usually equipped with lubricating grease chambers for For the lubrication protection of the transmission structure, etc., the grease chamber is usually provided with openings for regular maintenance and inspection of the internal transmission structure. Since the above-mentioned components are in direct contact with seawater, the opening of the grease chamber must be sealed and isolated to prevent Prevent corrosion by seawater immersion and damage to the internal transmission mechanism. Therefore, it is very important fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B17/00
CPCB63B17/00B63B2017/0045
Inventor 李小旭高爱东严健国
Owner JIANGNAN SHIPYARD GRP CO LTD
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