Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Long-acting preserving and sealing protection method

A sealing protection, long-term anti-corrosion technology, used in pipeline anti-corrosion/anti-rust protection, damage protection, pipeline protection and other directions, can solve the problems of low heat resistance, poor elasticity, easy to crack and so on

Inactive Publication Date: 2006-08-02
NANJING UNIV
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, epoxy cement is not resistant to high and low temperature impact, and has poor elasticity and is easy to crack
Polysulfide sealant has good elasticity, good ozone resistance and weather resistance, excellent oil resistance, good water resistance, low moisture permeability, and small shrinkage. However, in order to adjust thixotropy during construction, a large amount of filler is added to affect adhesion. There are many pores after construction, which affects the sealing effect
Ordinary polyurethane cement is oil-resistant, wear-resistant, high-strength, good elasticity, and good radiation resistance, but its heat resistance is not high. The disadvantage is that it is not resistant to hot water, water vapor, strong acid and alkali, and it is not suitable as the first choice for long-term underwater sealing. Material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Long-acting preserving and sealing protection method
  • Long-acting preserving and sealing protection method
  • Long-acting preserving and sealing protection method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0013] Example 1: Flange joint anti-corrosion sealing protection

[0014] figure 1 Schematic diagram of the anti-corrosion sealing double-layer protection structure of the flange joint. The outer neoprene jacket is prefabricated into a semicircular cavity structure with a thickness of 5mm. During construction, it is only necessary to fill the cavity with polysulfide sealant, close the two semicircles and lock them with a throat hoop, scrape off the excess sealant, and wait until completely After curing, remove the hose clamp. The sealing structure has double protection inside and outside, and the anti-corrosion effect is very effective. When repairing and disassembling, it is only necessary to cut the outer layer of rubber along the closing seam, scrape off the sealant in the cavity, and the neoprene jacket can be reused.

[0015] After the practical application of this long-term anti-corrosion sealing protection method, the appearance is beautiful and smooth, the construct...

example 2

[0016] Example 2: Bolt oil-resistant anti-corrosion seal application

[0017] figure 2 Schematic diagram of the anti-corrosion sealing double-layer protection structure of the bolt. The nitrile rubber jacket is designed as a cylindrical cavity structure with one end sealed, with a thickness of 3mm. The inner layer material is polyurethane sealant with excellent oil resistance and strong bonding performance. After the polyurethane sealant is injected into the cavity during construction, it is set on the bolt, scraped off the excess polyurethane, and pressed with tape. After it is completely cured, remove it. adhesive tape.

example 3

[0018] Example 3: Gas cylinder anti-corrosion sealing protection

[0019] image 3 Schematic diagram of the double-layer protective structure of the gas cylinder joint. The average thickness of the outer styrene-butadiene rubber jacket is 5mm-10mm. The semicircular cavity structure has a smooth outer surface. The diameter is 8-10mm. After filling the cavity with silicone sealant during construction, close the two semi-circular cavities and lock them with throat clamps. Scrape off the excess sealant. After it is completely cured, remove the throat clamps.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The long-acting preserving and sealing protection method has double-layer preserving and sealing structure adopted including an outer layer of rubber jacket and an inner layer of preserving and sealing glue to adhere the rubber jacket and the protected part integrally. The present invention is especially suitable for use in preserving and sealing protection of gas cylinder joint, pipeline, flange joint, nut and screw bolt in ships.

Description

1. Technical field [0001] The invention relates to a long-term anti-corrosion sealing protection method, which adopts a double-layer structure, is composed of a rubber jacket and a sealant, and is used for anti-corrosion sealing of pipeline connections, gas cylinder joints, nuts and bolts, etc., and belongs to the technical field of sealing. 2. Background technology [0002] There are thousands of various pipe connections (flanges) and a large number of bolts (screw caps) on the ship. Due to long-term immersion in seawater, frequent alternation of dry and wet, high and low temperature, it is easy to cause seawater oxidation and corrosion. In addition, different materials The potential corrosion of the parts is also very serious. The commonly used anti-corrosion method on ships is to use anti-rust paint, which has been proved to be unable to meet the long-term anti-corrosion requirements. There are also ships that directly coat underwater components with epoxy cement, polysu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16J15/00F16L58/02F17C1/10F16B41/00
Inventor 全一武周力平王庆军张俊生陈庆民
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com