阅读说明：本技术 双重密闭接头和双重密闭接头组件 (Dual hermetic joint and dual hermetic joint assembly ) 是由 希·B·阮 顺·安·T·丁 马里奥·弗雷戈索 安克特·索尼 于 2018-12-18 设计创作，主要内容包括：本发明提供了一种双重密闭接头,所述双重密闭接头可包括初级管道、次级管道和双重容纳体。所述次级管道可围绕所述初级管道的第一部分并与之同心,形成介于所述初级管道与所述次级管道之间的第一泄漏容纳空间。所述双重容纳体可包括扩口式接头部分和初级密闭螺母部分。所述扩口式接头部分可围绕所述初级管道并与之同心,形成介于所述初级管道与所述扩口式接头部分之间的第二泄漏容纳空间。所述初级密闭螺母部分可围绕所述初级管道的所述扩口端并与之同心,形成介于所述初级管道与所述初级密闭螺母部分之间的第三泄漏容纳空间。所述初级密闭螺母部分可包括至少一个泄漏通孔,将所述第三泄漏容纳空间与所述第二泄漏容纳空间相连接。(A double containment fitting may include a primary conduit, a secondary conduit, and a double containment body. The secondary duct may surround and be concentric with the first portion of the primary duct, forming a first leak-accommodating space between the primary duct and the secondary duct. The double containment body may comprise a flared joint part and a primary gland nut part. The flared joint part may surround and be concentric with the primary pipe, forming a second leak-accommodating space between the primary pipe and the flared joint part. The primary gland nut portion may surround and be concentric with the flared end of the primary conduit, forming a third leak-containment space between the primary conduit and the primary gland nut portion. The primary containment nut portion may include at least one leakage through-hole connecting the third leakage accommodating space with the second leakage accommodating space.)

1. A double containment fitting comprising:

a primary conduit having a flared end;

a secondary duct having a flared end, wherein the secondary duct surrounds and is concentric with a first portion of the primary duct forming a first leak-accommodating space between the primary duct and the secondary duct;

a double containment body comprising a flared joint portion, a primary gland nut portion and a bore therethrough,

wherein the flared joint part surrounds and is concentric with the second part of the primary pipe, forming a second leakage accommodation space between the primary pipe and the flared joint part,

wherein the flared fitting portion is in compressive engagement with the flared end of the secondary conduit, connecting the first leak-containment space with the second leak-containment space,

wherein the primary gland nut portion surrounds and is concentric with the flared end of the primary pipe forming a third leak containment space between the primary pipe and the primary gland nut portion, and

wherein the primary containment nut portion includes at least one leakage through-hole connecting the third leakage accommodating space with the second leakage accommodating space.

2. A dual containment fitting assembly comprising:

a primary conduit having a flared end;

a secondary duct having a flared end, wherein the secondary duct surrounds and is concentric with a first portion of the primary duct forming a first leak-accommodating space between the primary duct and the secondary duct;

a double containment body comprising a flared joint portion, a primary gland nut portion and a bore therethrough,

wherein the flared joint part surrounds and is concentric with the second part of the primary pipe, forming a second leakage accommodation space between the primary pipe and the flared joint part,

wherein the flared fitting portion is in compressive engagement with the flared end of the secondary conduit, connecting the first leak-containment space with the second leak-containment space,

wherein the primary gland nut portion surrounds and is concentric with the flared end of the primary pipe forming a third leak containment space between the primary pipe and the primary gland nut portion, and

wherein the primary containment nut portion includes at least one leak-through hole connecting the third leak-containing space with the second leak-containing space; and a valve assembly annular fitting body including a first end, a second end, and a bore therethrough;

wherein the first end of the annular fitting body is threadably engaged within the primary gland nut portion of the dual receptacle such that the flared end of the primary conduit is compressively engaged within the first end of the annular fitting body.

3. The dual containment joint or dual containment joint assembly of any one of claims 1 and 2, wherein the primary conduit, the secondary conduit, or the dual containment body comprises a polymeric material.

4. The dual containment fitting or dual containment fitting assembly of claim 3, wherein the primary conduit, the secondary conduit, or the dual containment body comprises Perfluoroalkoxy (PFA).

5. The dual containment fitting or dual containment fitting assembly of claim 3, wherein the primary conduit, the secondary conduit, and the dual containment body comprise Perfluoroalkoxy (PFA).

6. The dual containment fitting or dual containment fitting assembly of any of claims 1 and 2, wherein the primary containment nut portion comprises a polymeric material.

7. The dual closed joint or dual closed joint assembly of claim 6 wherein the polymeric material comprises Perfluoroalkoxy (PFA).

8. The dual containment joint or dual containment joint assembly of any one of claims 1 and 2, wherein the primary containment nut portion comprises an outer wall having a thickness of at least about 1mm and no greater than about 5.0 mm.

9. The dual containment joint or dual containment joint assembly as in any one of claims 1 and 2, wherein the primary containment nut section comprises an outer wall and wherein the at least one leakage through-hole is disposed in the outer wall of the primary containment nut section.

10. The dual containment joint or dual containment joint assembly of claim 9, wherein the primary containment nut section includes at least two leak-off through holes disposed in the outer wall of the primary containment nut section.

11. The dual containment joint or dual containment joint assembly of claim 10, wherein each of the leakage through-holes are equally spaced around the outer wall of the primary containment nut portion.

12. The dual containment joint or dual containment joint assembly of claim 10, wherein each of the leak-off throughbores is configured for unidirectional fluid flow.

13. The double containment joint or double containment joint assembly as recited in claim 12, wherein each of the leak through holes is configured to allow flow from the third leak-containment space to the second leak-containment space.

14. The dual containment joint or dual containment joint assembly as in any one of claims 1 and 2, wherein the primary containment nut section comprises an outer wall and wherein the at least one leakage throughbore passes through the outer wall of the primary containment nut section.

15. The dual containment joint or dual containment joint assembly according to any one of claims 1 and 2, wherein the at least one leakage through-hole comprises an inner diameter of at least about 0.5mm and not greater than about 2.0 mm.

Technical Field

The present disclosure generally relates to a double containment fitting. More particularly, the present disclosure relates to a dual containment coupling for connecting a conduit to a secondary fluid transfer component in a dual containment coupling assembly.

The dual containment fitting assembly is designed to connect both threaded and non-threaded conduits to secondary components, such as other conduits or valve assemblies. The use of such an assembly may facilitate the connection of the concentric inner and outer plastic tubes in an arrangement such that the outer tubing accommodates any fluid leakage from the inner tubing. While such dual-joint assemblies reduce leakage problems from the innerduct itself, in view of the aggressiveness of the corrosive chemicals and the process conditions used in the semiconductor manufacturing industry, it is desirable to develop additional containment options for possible leakage around the connection between the conduit and the secondary component. Accordingly, it is desirable to continue to develop improved joint assemblies to provide additional leakage protection around the intersection between the conduit and the secondary component.

Disclosure of Invention

According to one aspect, a double containment fitting may include a primary conduit having a flared end, a secondary conduit having a flared end, and a double containment body. The secondary duct may surround and be concentric with the first portion of the primary duct, forming a first leak-accommodating space between the primary duct and the secondary duct. The double containment body may include a flared joint portion, a primary gland nut portion and a bore therethrough. The flared joint part may surround and be concentric with the second part of the primary pipe, forming a second leakage accommodation space between the primary pipe and the flared joint part. The flared nipple portion may be press fit with the flared end of the secondary conduit, connecting the first leak-containment space with the second leak-containment space. The primary containment nut portion may surround and be concentric with the flared end of the primary conduit, forming a third leak-containment space between the primary conduit and the primary containment nut portion. The primary containment nut portion may include at least one leakage via connecting the third leakage accommodating space with the second leakage accommodating space.

According to yet another aspect, a dual containment fitting assembly may include a primary conduit having a flared end, a secondary conduit having a flared end, a dual receptacle, and a valve assembly annular fitting body. The secondary duct may surround and be concentric with the first portion of the primary duct, forming a first leak-accommodating space between the primary duct and the secondary duct. The double containment body may include a flared joint portion, a primary gland nut portion and a bore therethrough. The flared joint part may surround and be concentric with the second part of the primary pipe, forming a second leakage accommodation space between the primary pipe and the flared joint part. The flared nipple portion may be press fit with the flared end of the secondary conduit, connecting the first leak-containment space with the second leak-containment space. The primary containment nut portion may surround and be concentric with the flared end of the primary conduit, forming a third leak-containment space between the primary conduit and the primary containment nut portion. The primary containment nut portion may include at least one leakage via connecting the third leakage accommodating space with the second leakage accommodating space. The valve assembly annular adapter body may include a first end, a second end, and a bore therethrough. The first end portion of the annular fitting body is threadably engaged within the primary gland nut portion of the dual receptacle such that the flared end of the primary conduit is compressively engaged within the first end portion of the annular fitting body.

Brief description of the drawings

The embodiments are shown by way of example and are not limited by the accompanying figures.

FIG. 1 includes an illustration of a perspective view of a dual containment joint assembly according to certain embodiments described herein;

FIG. 2 includes an illustration of a perspective view of a dual containment joint assembly according to certain embodiments described herein;

FIGS. 3-5 include illustrations of various views of the primary gland nut portion of the dual pod of the dual gland fitting assembly shown in FIG. 1;

figure 6 includes an illustration of a dual containment body of the dual containment joint assembly.

Skilled artisans appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale.