CN2883810Y

CN2883810Y - Dual-ring sealing gasket

Info

Publication number: CN2883810Y
Application number: CN 200620072217
Authority: CN
Inventors: 马志刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-06
Filing date: 2006-04-06
Publication date: 2007-03-28
Anticipated expiration: 2016-04-06

Abstract

The utility model relates to a double loop sealing gasket, which comprises an outside metal ring pipe, an inside metal ring pipe concentric to the outside pipe, flexible sealed filler, a limiting outer ring, a limiting middle ring, a limiting inside ring and an overlying strata on the top and bottom surface of the outside and inside pipes. The outside metal pipe is chucked between the limiting outside and middle rings; the inside metal pipe is chucked between the metal pipe and the limiting middle ring with at lest a through hole transfixing the top and bottom surface of the limiting middle pipes. Controlling the density of the flexible sealed filler in the metal pipe can realize the adjustment of the compress and the rebound rate of the sealing gasket, and double sealing surfaces can realize the surveillance of the sealing condition making the security higher.

Description

Dual-ring sealing washer

Technical field

The utility model relates to a kind of gasket seal, particularly relates to a kind of dual-ring sealing washer.

Background technique

In the prior art, gasket seal is many to be made with flexible material, for example asbestos, rubber etc., because the ability that this kind material meets with stresses is relatively poor, in use for some time, owing to bear the effect of pressure and ambient temperature, gasket seal is easily aging or lax, sealing variation even lose sealability, flexible when mounted distortion has simultaneously influenced sealing effect.The gasket seal that other has metallic material to make, because of metal tube is a hollow, resistance to pressure and compression recovery performance are limited, Applicable scope is narrower, do on this basis with improved metallic packing, the metal tube of hollow is provided with opening, though play the effect of self-tightening sealing, but explosion easily takes place when using and by problems such as medium obstructions, do not reach desirable sealing effect.In the occasion higher to the gasket seal performance requirement, gasket seal is difficult to monitoring and brings loss when take place leaking, when serious even have an accident.

Summary of the invention

The purpose of this utility model provides a kind of dual-ring sealing washer, and it has excellent sealing performance and can realize leak supervision.

The technical solution of the utility model is: a kind of dual-ring sealing washer, the outside metal tube that comprises ring-type, inboard metal tube with the ring-type of the concentric setting of outside metal tube, flexible sealing packing outside being filled in respectively in the inner chamber of metal tube and inboard metal tube, encircle in the restriction between outside metal tube and inboard metal tube, cover the coating of outside metal tube and inboard metal tube upper and lower surface respectively, the restricted outer shroud of arranged outside of outside metal tube, inboard metal tube inboard is provided with ring in the restriction, between outside metal tube chucking encircles in restriction outer shroud and restriction, between encircling in inboard metal tube chucking encircles in restriction and limits, outside metal tube, inboard metal tube, the restriction outer shroud, encircle in ring and the restriction in the restriction to being provided with one heart, at least have a through hole on the ring in the restriction, through hole runs through the upper and lower surface of encircling in the restriction.

Through hole has a plurality of, and the homonymy port part of each through hole is arranged in the form of a ring along ring in the restriction.

Outside metal tube has outer surface under the outside metal tube of outer surface peace on the flat outside metal tube, inboard metal tube has outer surface under the inboard metal tube of outer surface peace on the flat inboard metal tube, outer surface is parallel with outer surface under the metal tube of the outside on the metal tube of the outside, outer surface is parallel with outer surface under the inboard metal tube on the inboard metal tube, on the metal tube of the outside on outer surface and the inboard metal tube outer surface at grade, outer surface is at grade under outer surface and the inboard metal tube under the metal tube of the outside.

Coating is a lamella.

The upper and lower surface of coating is the plane.

The utility model compared with prior art has following advantage: will insert the flexible sealing packing in the metal tube, by control packing density, can realize that double-sealing face can be realized the supervision to sealing condition, and is safe to the compression of gasket seal, the adjustment of rebound degree.

Description of drawings

Accompanying drawing 1 is a plan view of the present utility model;

Accompanying drawing 2 is the A-A direction sectional view of accompanying drawing 1;

Wherein, 1, outside metal tube; 2, inboard metal tube; 3, flexible sealing packing; 4, coating; 5, restriction outer shroud; 6, ring in the restriction; 7, ring in the restriction; 8, through hole; 9, outer surface on the metal tube of the outside; 10, outer surface under the metal tube of the outside; 11, outer surface on the inboard metal tube; 12, outer surface under the inboard metal tube.

Embodiment

Referring to accompanying drawing 1 to accompanying drawing 2, a kind of dual-ring sealing washer, the outside metal tube 1 that comprises ring-type, inboard metal tube 2 with the ring-type of outside metal tube 1 concentric setting, flexible sealing packing 3 outside being filled in respectively in the inner chamber of metal tube 1 and inboard metal tube 2, encircle 6 in the restriction between outside metal tube 1 and inboard metal tube 2, cover the coating 4 of outside metal tube 1 and inboard metal tube 2 upper and lower surfaces respectively, the restricted outer shroud 5 of arranged outside of outside metal tube 1, inboard metal tube 2 inboards are provided with ring 7 in the restriction, outside metal tube 1 is clamped in restriction outer shroud 5 and the restriction and encircles between 6, inboard metal tube 2 is clamped in the restriction in the ring 6 and restriction between the ring 7, outside metal tube 1, inboard metal tube 2, restriction outer shroud 5, encircling 7 in the restriction in ring 6 and the restriction is to be provided with one heart, at least have a through hole 8 on the ring 6 in the restriction, through hole 8 runs through the upper and lower surface of ring 6 in the restriction.

Through hole 8 has a plurality of, and the homonymy port part of each through hole 8 is arranged in the form of a ring along ring 6 in the restriction.

As shown in Figure 2, outside metal tube 1 has outer surface 10 under the outside metal tube of outer surface 9 peace on the flat outside metal tube, and inboard metal tube 2 has outer surface 12 under the inboard metal tube of outer surface 11 peace on the flat inboard metal tube.Outer surface 9 is parallel with outer surface 10 under the metal tube of the outside on the metal tube of the outside, outer surface 11 is parallel with outer surface 12 under the inboard metal tube on the inboard metal tube, on the metal tube of the outside on outer surface 9 and the inboard metal tube outer surface 11 at grade, outer surface 12 is at grade under outer surface 10 and the inboard metal tube under the metal tube of the outside.Coating 4 is a lamella, and the upper and lower surface that covers respectively on outside metal tube 1 and the inboard metal tube 2 of coating 4 is the plane.

According to using required different pressure, rebound degree, adjust the density of inserting the flexible sealing packing in the metal tube, reach requirement.When inboard metal tube (seal element) the 2 poorly sealed generations of dual-ring sealing washer are leaked, there are gas or liquid etc. to enter in the cavity that forms between inboard metal tube (seal element) 2 and the outside metal tube (seal element) 1 along the place, slit, the interior pressure of cavity this moment changes, the testing instrument that is arranged on flange or teletransmission just can record, and realizes the monitoring to sealing condition.Before leaking by solution, outer metal ring (seal element) 1 has sealing effect equally, thereby provides the well-to-do preparatory period for changing gasket seal work, also provides foundation for changing gasket seal, has guaranteed the safety reliability of gasket seal.Because of the through hole of offering on the ring in the metal makes gas communication, any side sealing of metallic shim is not tight, can both be recorded, and has very high Security.

Claims

1, a kind of dual-ring sealing washer, it is characterized in that: it comprises the outside metal tube (1) of ring-type, inboard metal tube (2) with the ring-type of the concentric setting of described outside metal tube (1), be filled in the flexible sealing packing (3) in the inner chamber of described outside metal tube (1) and inboard metal tube (2) respectively, be arranged in the restriction ring (6) between described outside metal tube (1) and the inboard metal tube (2), cover the coating (4) of described outside metal tube (1) and inboard metal tube (2) upper and lower surface respectively, the restricted outer shroud of arranged outside (5) of described outside metal tube (1), described inboard metal tube (2) inboard is provided with ring (7) in the restriction, described outside metal tube (1) is clamped in described restriction outer shroud (5) and the restriction and encircles between (6), described inboard metal tube (2) is clamped on to encircle in the described restriction in (6) and the restriction and encircles between (7), described outside metal tube (1), inboard metal tube (2), restriction outer shroud (5), encircling (7) in ring (6) and the restriction in the restriction is to be provided with one heart, at least have a through hole (8) on the ring (6) in the described restriction, described through hole (8) runs through the upper and lower surface of ring (6) in the described restriction.

2, dual-ring sealing washer according to claim 1 is characterized in that: described through hole (8) has a plurality of, and the homonymy port part of described each through hole (8) is arranged in the form of a ring along ring (6) in the described restriction.

3, dual-ring sealing washer according to claim 1, it is characterized in that: described outside metal tube (1) has outer surface (10) under the outside metal tube of the peace of outer surface (9) on the flat outside metal tube, described inboard metal tube (2) has outer surface (12) under the inboard metal tube of the peace of outer surface (11) on the flat inboard metal tube, outer surface (9) is parallel with outer surface (10) under the metal tube of the outside on the metal tube of the described outside, outer surface (11) is parallel with outer surface (12) under the inboard metal tube on the described inboard metal tube, on the metal tube of the described outside on outer surface (9) and the inboard metal tube outer surface (11) at grade, outer surface (12) is at grade under outer surface (10) and the inboard metal tube under the metal tube of the described outside.

4, dual-ring sealing washer according to claim 1 is characterized in that: described coating (4) is a lamella.

5, dual-ring sealing washer according to claim 1 is characterized in that: the upper and lower surface of described coating (4) is the plane.