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

Arched ring seal washer and arched ring seal pipe connecting piece

A technology of pipe connection and ring sealing, applied in the direction of pipe/pipe joint/pipe fitting, flange connection, passing element, etc., can solve the problems of high machining accuracy, cannot be reused, not suitable for union, etc., to reduce installation The effect of construction period, steel saving, and convenient installation of pipe connectors

Active Publication Date: 2017-01-25
杨顺立
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oval ring gasket is in line contact with the flange groove, and the sealing performance is good, but the processing accuracy is high, and it cannot be reused
Since the elliptical gasket and the octagonal ring are double-sided sealed, they are not suitable for unions.

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
  • Arched ring seal washer and arched ring seal pipe connecting piece
  • Arched ring seal washer and arched ring seal pipe connecting piece
  • Arched ring seal washer and arched ring seal pipe connecting piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] DN25PN63 union, the gasket is A1 type bow ring, see figure 1 , 10 , R=15mm, α=23°, h=14mm, h1=2mm, and other dimensions are the same as DN25 triangular ring joints, see Chinese Patent Nos. 201320856527.5 and 20152024387.0 for details. The material of bow ring, joint and connection pipe is stainless steel 304, and the material of nut is 20# carbon steel galvanized. 0.5m φ32×3 steel pipes are welded on the connecting pipes and joints. Tighten the gland, pressurize the ferrule valve to 10MPa with a nitrogen cylinder, close the ferrule valve, and remove the connecting pipe between the nitrogen cylinder and the ferrule valve. Immerse the union in water and observe for 10 minutes, there are no air bubbles. After standing for 5 hours, the pressure did not change. Proof.

Embodiment 2

[0060] DN25PN63 joint, the gasket is B1-type bow ring ( image 3 ), α=23°, β=21°, R 1 = 1.6, R 2 = 1, the rest are the same as example 1, see installation Figure 11 . The material of bow ring, joint and connection pipe is stainless steel 304, and the material of nut is 20# carbon steel galvanized. Connect the union as in Example 1, pressurize with a manual pressure test pump, enter water to 20MPa, and close the ferrule valve. After observing for 5 hours, no water seeped out and the pressure did not change.

Embodiment 3

[0062] DN25PN25 union, the gasket is a C-shaped bow ring ( Figure 6 ), α=60°, β=57°, R 1 =0.5, see the connecting pipe, joint sealing surface and installation Figure 13 . The material of joints, pipes and nuts is galvanized 20# carbon steel, and the material of the bow ring is carbon fiber reinforced polytetrafluoroethylene. Connect the union as in Example 1, pressurize with a manual pressure test pump, enter water to 5MPa, and close the ferrule valve. After observing for 5 hours, no water seeped out and the pressure did not change.

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

PropertyMeasurementUnit
Top angleaaaaaaaaaa
Top angleaaaaaaaaaa
Bottom corneraaaaaaaaaa
Login to View More

Abstract

The invention relates to an arched ring hard seal washer. The longitudinal section of the washer is in an arch shape, a curved bow circular arc is outward, a seal line is arranged on the curved bow circular arc, and a bowstring straight line is parallel to a pipeline. A convex ring table is arranged at the position of an arch handle of the longitudinal section, namely, the convex ring table is arranged in the center of the outer ring of the arched ring hard seal washer. The existing hard seal ring washer elliptical ring (comprising an octagonal ring) belongs to double-sided line sealing, can not be popularized due to high processing accuracy requirement and very high price, only can be used for special high temperature and high pressure occasions, can be only used for a flange and can not be used for loose joint. The seal washer provided by the invention is sealed by a circular arc line and is opposite to a trapezoid ring sealing system, but when an arched ring is applied to the flange, a locating table is omitted, and a locating groove does not need to be formed in the flange, so that the arched ring is especially suitable for sealing the flange.

Description

technical field [0001] The invention relates to a seal, which belongs to the field of chemical machinery, in particular to a bow-shaped ring hard sealing gasket for pipeline connection, a welded pipe connection matched with a bow-shaped ring, including a flange, a clamp height Neck flanges and joints, the sealing surface of the pipe connection is an inclined surface (inner cone surface). Background technique [0002] In industry, especially in the chemical industry, flanges are widely used in pipeline connections. For small-diameter pipes below DN65, it is not necessary to use flanges for connection, but unions should be used. The weight of unions is only 1 / 5 to 1 / 3 of that of flanges, and the price of a union is only about half of the price of a pair of flanges. The pipe connection uses a union, which not only saves steel, has low cost, but also is easy to install. Galvanized joints are used for water pipes. Because the wires are easy to leak and gaskets (asbestos or rubb...

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): F16L23/032F16L23/024F16L23/18
CPCF16L23/024F16L23/032F16L23/18
Inventor 杨顺立陈功郭霞将马方林
Owner 杨顺立
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