WO2012160419A1 - A pipe end plug and method of closing off a pipe end - Google Patents
A pipe end plug and method of closing off a pipe end Download PDFInfo
- Publication number
- WO2012160419A1 WO2012160419A1 PCT/IB2011/052300 IB2011052300W WO2012160419A1 WO 2012160419 A1 WO2012160419 A1 WO 2012160419A1 IB 2011052300 W IB2011052300 W IB 2011052300W WO 2012160419 A1 WO2012160419 A1 WO 2012160419A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe section
- formation
- end cap
- pipe
- defining
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/11—Plugs
- F16L55/1108—Plugs fixed by screwing or by means of a screw-threaded ring
Definitions
- This invention relates to a pipe end plug, to a pipe end plug assembly and to a method of closing off a pipe end.
- a pipe end plug for closing off an open end of a pipe section having a conical seating face formed thereon at said open end and defining an external screw thread formation
- the pipe end plug being configured for use with an end cap defining an internal cavity in which an end region of said open end of the pipe section is receivable, the end cap defining an internal screw thread and a shoulder formation defining a conical seating face
- the pipe end plug comprising: an end plug body of a deformable material, having two opposed ends and defining a longitudinal axis defining between the ends, the end plug body having a first locating formation configured to be received within the open end of the pipe section and a second locating formation configured to be received within the internal cavity of the end cap, and a circumferential sealing formation which is disposed between the first and second locating formations, the sealing formation having a first conical sealing face configured to seat against the conical seating face of the end cap and a second conical sealing face configured to seat against the conical seating face
- a pipe end plug assembly for closing off an open end of a pipe section having a conical seating face formed thereon at said open end and defining an external screw thread formation
- the pipe end plug assembly comprising: the pipe end plug as described and defined hereinabove in accordance with the first aspect of the invention; and an end cap defining an internal cavity in which an end region of said open end of the pipe section is receivable, the end cap defining an internal screw thread and an internal shoulder formation defining a conical seating face configured to seat against the first conical sealing face of the end plug, the first locating formation of the end plug being receivable within the open end of the pipe section and the second locating formation of the end plug being receivable within the internal cavity of the end cap, with the circumferential sealing formation of the end plug being wedged between the seating faces of the pipe section and the end cap when the end cap is screwed onto the open end of the pipe section thereby to form a barrier to fluid flow along the pipe and to form a
- the end cap may be in the form of a collar. More specifically, the collar may be in the form of a nut such as a union nut.
- a method of closing off an open end of a pipe section including: providing an end plug comprising an end plug body of a deformable material, having two opposed ends and defining a longitudinal axis extending between the ends, the end plug body having a first locating formation at one end, a second locating formation at the other end and a circumferential sealing formation which is disposed between the first and second locating formations, the sealing formation having a first conical sealing face and a second conical sealing face; providing an end cap defining an internal cavity in which an end region of said open end of the pipe section is receivable, the end cap defining a connecting formation and an internal shoulder formation defining a conical seating face configured to seat against the first conical seating formation of the end plug body; forming a seating face at said open end of the pipe section configured to seat
- the connecting formation of the pipe section may be in the form of an external screw thread and the connecting formation of the end cap is in the form of a complementary internal screw thread, the method including screwing the end cap into the open end of the pipe section so as to wedge the sealing formation of the end plug body between the seating faces of the pipe section and the end cap thereby to form said fluid-tight seal between the pipe section and the end cap.
- Figure 1 shows an exploded sectional side view of a pipe end plug assembly in accordance with the invention and an end section of a pipe to which the pipe end plug assembly is to be fitted;
- Figure 2 shows a sectional side view of the pipe end plug assembly of Figure 1 fitted to the pipe section shown in Figure 1 ;
- Figure 3 shows a side view of the pipe end section having the pipe end plug assembly of Figure 2 connected thereto;
- Figure 4 shows a perspective view of the pipe end plug of the pipe end plug assembly shown in Figure 1 .
- a pipe end plug assembly in accordance with the invention is designated generally by the reference numeral 10.
- the pipe end plug assembly 10 comprises a pipe end plug 12 also in accordance with the invention and an end cap 14 in the form of a collar.
- the pipe end plug assembly 10 is specifically adapted for closing off an open end of a pipe section.
- an example of such a pipe section having an open end is shown as an elbow pipe section 16 having a first open end 18 and a second open end 20.
- An end region of the pipe section 16 adjacent the end 18 has an external screw thread 22.
- the end 18 has a conical seating face 24 formed therein.
- the seating face 24 has a 45° cone angle.
- the end cap 14 is in the form of a union nut and defines an internal cavity 26 and an internal screw thread 28 which defines the internal cavity.
- the internal screw thread 28 of the end cap 14 has a complementary configuration to that of the external screw thread 22 of the pipe section 16 thereby permitting the end cap to be screwed onto the pipe section.
- the end cap 14 defines an internal shoulder formation 30 defining a conical seating face 32 leading into a cylindrical bore 34.
- the seating face 32 has a 45° cone angle.
- the end plug comprises an end plug body which has a unitary solid structure and is of a resiliently deformable plastics material such as nylon.
- the end plug 12 has two opposed ends 36 and 38 and defines a longitudinal axis "A" through its centre which extends between the ends 36 and 38.
- the end plug has a first cylindrical locating formation 40, a second cylindrical locating formation 42 and a circumferential sealing formation 44 which is disposed between the first and second locating formations.
- An apex of the sealing formation 44 has a larger diameter than the diameters of the locating formations 40 and 42 which have the same diameters.
- the sealing formation 44 thus projects outwardly beyond the circumferences of the locating formations 40 and 42. More specifically, the sealing formation 44 has a first conical sealing face 46 and a second conical sealing face 48, the conical sealing faces 46 and 48 being disposed on opposite sides of the sealing formation 44.
- the open end 18 of the pipe section 16 is closed off by locating the first locating formation 46 of the end plug body 12 within the open end 18 of the pipe section 16 and screwing the end cap 14 onto the open end of the pipe section so as to wedge the first and second conical sealing faces 46, 48 of the end plug body between the seating faces 24 and 32, respectively, of the end cap in the pipe section.
- the sealing faces 46, 48 of the sealing formation 44 of the end plug body deform so as to flatten and seat firmly against the seating faces 24 and 32 of the pipe section 16 and the end cap 14, respectively, so as to form a liquid-tight seal between the pipe section and the end cap.
- the end plug forms a barrier to the flow of fluid along the pipe section 16, thereby closing off the open end of the pipe section.
- This invention extends to the end plug 12.
- the invention also extends to the method of closing off the pipe section 16 using the pipe end plug 12 and the end cap 14, as described hereinabove.
- the pipe end plug 12 forms a barrier to the flow of fluid along the pipe, with the sealing formation 44 forming a fluid-tight seal between the pipe section and the end cap.
- the end plug 12 is thus suitable for forming a gas or liquid- tight seal between the pipe section and the end cap.
- the end plug may be used with pipe sections having various different configurations.
- the end cap does therefore does not need to have a closed end for closing off the pipe section. This allows a relatively inexpensive and commonly available nut to be used as the end cap.
- the nut and the end plug are relatively inexpensive components which provide for the closing off of a pipe end in a relatively inexpensive and simple manner which providing an effective plug for sealing off the open end of the pipe end.
- the method of closing off the pipe section is simple to implement as the end plug can be aligned with pipe section by simply inserting the relevant locating formation in the end of the pipe section and screwing the end cap onto the pipe section.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
A pipe end plug assembly for closing off an open end of a pipe section (16) having a conical seating face (24) and defining an external screw thread (22), comprises a pipe end plug (12) and an end cap (14). The plug (12) comprises a resiliently deformable plug body having cylindrical locating formations (40 and 42) at opposite ends and a circumferential seal (44) disposed between the locating formations (40, 42). The seal defines conical sealing faces (46 and 48). The end cap is a union nut having an internal cavity (26) and an internal screw thread (28). The end cap defines a conical seating face (32). The open end of the pipe section (16) is closed off by inserting the locating formation (40) into the pipe section and screwing the end cap (14) onto the pipe section so as to wedge the seal (44) of the end plug between the seating faces (24 and 32), thereby forming a fluid-tight seal between the pipe section and the end cap.
Description
A PIPE END PLUG AND METHOD OF CLOSING OFF A PIPE END
FIELD OF INVENTION
This invention relates to a pipe end plug, to a pipe end plug assembly and to a method of closing off a pipe end.
SUMMARY OF INVENTION
According to a first aspect of the invention, there is provided a pipe end plug for closing off an open end of a pipe section having a conical seating face formed thereon at said open end and defining an external screw thread formation, the pipe end plug being configured for use with an end cap defining an internal cavity in which an end region of said open end of the pipe section is receivable, the end cap defining an internal screw thread and a shoulder formation defining a conical seating face, the pipe end plug comprising: an end plug body of a deformable material, having two opposed ends and defining a longitudinal axis defining between the ends, the end plug body having a first locating formation configured to be received within the open end of the pipe section and a second locating formation configured to be received within the internal cavity of the end
cap, and a circumferential sealing formation which is disposed between the first and second locating formations, the sealing formation having a first conical sealing face configured to seat against the conical seating face of the end cap and a second conical sealing face configured to seat against the conical seating face of the pipe section when the end cap is screwed onto the open end of the pipe section, thereby wedging the sealing formation of the end plug body between the seating faces of the pipe section and the end cap thereby to form a barrier to fluid flow along the pipe and to form a fluid- tight seal between the pipe section and the end cap.
According to a second aspect of the invention, there is provided a pipe end plug assembly for closing off an open end of a pipe section having a conical seating face formed thereon at said open end and defining an external screw thread formation, the pipe end plug assembly comprising: the pipe end plug as described and defined hereinabove in accordance with the first aspect of the invention; and an end cap defining an internal cavity in which an end region of said open end of the pipe section is receivable, the end cap defining an internal screw thread and an internal shoulder formation defining a conical seating face configured to seat against the first conical sealing face of the end plug, the first locating formation of the end plug being receivable within the open end of the pipe section and the second locating formation of the end plug being receivable within the internal cavity of the end cap, with the circumferential sealing formation of the end plug being wedged between the seating faces of the pipe section and the end cap when the end cap is screwed onto the open end of the pipe section thereby to form a barrier to fluid flow along the pipe and to form a fluid-tight seal between the pipe section and the end cap.
The end cap may be in the form of a collar. More specifically, the collar may be in the form of a nut such as a union nut.
According to a third aspect of the invention, there is provided a method of closing off an open end of a pipe section, the method including: providing an end plug comprising an end plug body of a deformable material, having two opposed ends and defining a longitudinal axis extending between the ends, the end plug body having a first locating formation at one end, a second locating formation at the other end and a circumferential sealing formation which is disposed between the first and second locating formations, the sealing formation having a first conical sealing face and a second conical sealing face; providing an end cap defining an internal cavity in which an end region of said open end of the pipe section is receivable, the end cap defining a connecting formation and an internal shoulder formation defining a conical seating face configured to seat against the first conical seating formation of the end plug body; forming a seating face at said open end of the pipe section configured to seat against the second conical sealing formation of the end plug body and forming a connecting formation on said end of the pipe section to which the end cap can be connected; and locating the first locating formation of the end plug body within the open end of the pipe section at its open end and connecting the end cap onto the open end of the pipe section so as to wedge the first and second conical sealing faces of the sealing formation of the end plug body between the seating faces of the end cap and the pipe section, respectively, thereby to form a barrier to the flow of fluid along the pipe section and a fluid-tight seal between the pipe section and the end cap.
The connecting formation of the pipe section may be in the form of an external screw thread and the connecting formation of the end cap is in the form of a complementary internal screw thread, the method including screwing the end cap into the open end of the pipe section so as to wedge the sealing formation of the end plug body between the
seating faces of the pipe section and the end cap thereby to form said fluid-tight seal between the pipe section and the end cap.
BRIEF DESCRIPTION OF THE DRAWINGS
Further features of the invention are described hereinafter by way of a non-limiting example of the invention, with reference to and as illustrated in the accompanying diagrammatic drawings. In the drawings:
Figure 1 shows an exploded sectional side view of a pipe end plug assembly in accordance with the invention and an end section of a pipe to which the pipe end plug assembly is to be fitted;
Figure 2 shows a sectional side view of the pipe end plug assembly of Figure 1 fitted to the pipe section shown in Figure 1 ; Figure 3 shows a side view of the pipe end section having the pipe end plug assembly of Figure 2 connected thereto; and
Figure 4 shows a perspective view of the pipe end plug of the pipe end plug assembly shown in Figure 1 .
DESCRIPTION OF PREFERRED EMBODIMENTS
With reference to the drawings, a pipe end plug assembly in accordance with the invention, is designated generally by the reference numeral 10. The pipe end plug assembly 10 comprises a pipe end plug 12 also in accordance with the invention and an end cap 14 in the form of a collar.
The pipe end plug assembly 10 is specifically adapted for closing off an open end of a pipe section. With reference to the drawings, an example of such a pipe section having
an open end is shown as an elbow pipe section 16 having a first open end 18 and a second open end 20. An end region of the pipe section 16 adjacent the end 18 has an external screw thread 22. Furthermore, the end 18 has a conical seating face 24 formed therein. The seating face 24 has a 45° cone angle. The end cap 14 is in the form of a union nut and defines an internal cavity 26 and an internal screw thread 28 which defines the internal cavity. The internal screw thread 28 of the end cap 14 has a complementary configuration to that of the external screw thread 22 of the pipe section 16 thereby permitting the end cap to be screwed onto the pipe section. Furthermore, the end cap 14 defines an internal shoulder formation 30 defining a conical seating face 32 leading into a cylindrical bore 34. The seating face 32 has a 45° cone angle.
The end plug comprises an end plug body which has a unitary solid structure and is of a resiliently deformable plastics material such as nylon. The end plug 12 has two opposed ends 36 and 38 and defines a longitudinal axis "A" through its centre which extends between the ends 36 and 38. The end plug has a first cylindrical locating formation 40, a second cylindrical locating formation 42 and a circumferential sealing formation 44 which is disposed between the first and second locating formations. An apex of the sealing formation 44 has a larger diameter than the diameters of the locating formations 40 and 42 which have the same diameters. The sealing formation 44 thus projects outwardly beyond the circumferences of the locating formations 40 and 42. More specifically, the sealing formation 44 has a first conical sealing face 46 and a second conical sealing face 48, the conical sealing faces 46 and 48 being disposed on opposite sides of the sealing formation 44.
In use, the open end 18 of the pipe section 16 is closed off by locating the first locating formation 46 of the end plug body 12 within the open end 18 of the pipe section 16 and screwing the end cap 14 onto the open end of the pipe section so as to wedge the first and second conical sealing faces 46, 48 of the end plug body between the seating faces 24 and 32, respectively, of the end cap in the pipe section. As such, the sealing faces 46, 48 of the sealing formation 44 of the end plug body, deform so as to flatten
and seat firmly against the seating faces 24 and 32 of the pipe section 16 and the end cap 14, respectively, so as to form a liquid-tight seal between the pipe section and the end cap. Being of a solid construction, the end plug forms a barrier to the flow of fluid along the pipe section 16, thereby closing off the open end of the pipe section. This invention extends to the end plug 12. The invention also extends to the method of closing off the pipe section 16 using the pipe end plug 12 and the end cap 14, as described hereinabove.
It will be appreciated that the pipe end plug 12 forms a barrier to the flow of fluid along the pipe, with the sealing formation 44 forming a fluid-tight seal between the pipe section and the end cap. The end plug 12 is thus suitable for forming a gas or liquid- tight seal between the pipe section and the end cap. It will be appreciated also that the end plug may be used with pipe sections having various different configurations. The end cap does therefore does not need to have a closed end for closing off the pipe section. This allows a relatively inexpensive and commonly available nut to be used as the end cap. The nut and the end plug are relatively inexpensive components which provide for the closing off of a pipe end in a relatively inexpensive and simple manner which providing an effective plug for sealing off the open end of the pipe end. The method of closing off the pipe section is simple to implement as the end plug can be aligned with pipe section by simply inserting the relevant locating formation in the end of the pipe section and screwing the end cap onto the pipe section.
Claims
1 . A pipe end plug for closing off an open end of a pipe section having a conical seating face formed thereon at said open end and defining an external screw thread formation, the end plug being configured for use with an end cap defining an internal cavity in which an end region of said open end of the pipe section is receivable, the end cap defining an internal screw thread and a shoulder formation defining a conical seating face, the pipe end plug comprising: an end plug body of a deformable material, having two opposed ends and defining a longitudinal axis defining between the ends, the end plug body having a first locating formation configured to be received within the open end of the pipe section and a second locating formation configured to be received within the internal cavity of the end cap, and a circumferential sealing formation which is disposed between the first and second locating formations, the sealing formation having a first conical sealing face configured to seat against the conical seating face of the end cap and a second conical sealing face configured to seat against the conical seating face of the pipe section when the end cap is screwed onto the open end of the pipe section, thereby wedging the sealing formation of the end plug body between the seating faces of the pipe section and the end cap thereby to form a barrier to fluid flow along the pipe and to form a fluid-tight seal between the pipe section and the end cap.
2. A pipe end plug assembly for closing off an open end of a pipe section having a conical seating face formed thereon at said open end and defining an external screw thread formation, the pipe end plug assembly comprising: the pipe end plug as claimed in claim 1 ; and an end cap defining an internal cavity in which an end region of said open end of the pipe section is receivable, the end cap defining an internal screw thread and an internal shoulder formation defining a conical seating face configured to seat against the first conical sealing face of the end plug, the first locating formation of the end plug being receivable within the open end of the pipe section and the second locating formation of the end plug being receivable within the internal cavity of the end cap, with the circumferential sealing formation of the end plug being wedged between the seating faces of the pipe section and the end cap when the end cap is screwed onto the open end of the pipe section thereby to form a barrier to fluid flow along the pipe and to form a fluid-tight seal between the pipe section and the end cap.
The pipe end plug assembly as claimed in claim 2, wherein the end cap is in the form of a collar.
A method of closing off an open end of a pipe section, the method including: providing an end plug comprising an end plug body of a deformable material, having two opposed ends and defining a longitudinal axis extending between the ends, the end plug body having a first locating formation at one end, a second locating formation at the other end and a circumferential sealing formation which is disposed between the first and second locating formations, the sealing formation having a first conical sealing face and a second conical sealing face; providing an end cap defining an internal cavity in which an end region of said open end of the pipe section is receivable, the end cap defining a connecting formation and an internal shoulder formation defining a conical seating face configured to seat against the first conical seating formation of the end plug body; forming a seating face at said open end of the pipe section configured to seat against the second conical sealing formation of the end plug body and forming a connecting formation on said end of the pipe section to which the end cap can be connected; and locating the first locating formation of the end plug body within the open end of the pipe section at its open end and connecting the end cap onto the open end of the pipe section so as to wedge the first and second conical sealing faces of the sealing formation of the end plug body between the seating faces of the end cap and the pipe section, respectively, thereby to form a barrier to the flow of fluid along the pipe section and a fluid-tight seal between the pipe section and the end cap.
5. The method as claimed in claim 4, wherein the connecting formation of the pipe section is in the form of an external screw thread and the connecting formation of the end cap is in the form of a complementary internal screw thread, the method including screwing the end cap into the open end of the pipe section so as to wedge the sealing formation of the end plug body between the seating faces of the pipe section and the end cap thereby to form said fluid-tight seal between the pipe section and the end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2011/052300 WO2012160419A1 (en) | 2011-05-26 | 2011-05-26 | A pipe end plug and method of closing off a pipe end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2011/052300 WO2012160419A1 (en) | 2011-05-26 | 2011-05-26 | A pipe end plug and method of closing off a pipe end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012160419A1 true WO2012160419A1 (en) | 2012-11-29 |
Family
ID=44627244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2011/052300 WO2012160419A1 (en) | 2011-05-26 | 2011-05-26 | A pipe end plug and method of closing off a pipe end |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2012160419A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130319564A1 (en) * | 2012-06-01 | 2013-12-05 | Cornelio Torres | Plumbing elbow |
| CN108730529A (en) * | 2018-06-14 | 2018-11-02 | 河南柴油机重工有限责任公司 | A kind of multimode compound seal having directional exhaust device and application method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320238A (en) * | 1992-06-10 | 1994-06-14 | Fib-R-Fit, Inc. | End closure method and construction for non-metallic pressure vessels |
| US5560396A (en) * | 1994-08-10 | 1996-10-01 | Kramer, Jr.; Vance M. | Rigid end socket for flexible tubing and method of making same |
| WO2010144962A1 (en) * | 2009-06-17 | 2010-12-23 | Francis Desmond Lourigan | A end plug |
-
2011
- 2011-05-26 WO PCT/IB2011/052300 patent/WO2012160419A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320238A (en) * | 1992-06-10 | 1994-06-14 | Fib-R-Fit, Inc. | End closure method and construction for non-metallic pressure vessels |
| US5560396A (en) * | 1994-08-10 | 1996-10-01 | Kramer, Jr.; Vance M. | Rigid end socket for flexible tubing and method of making same |
| WO2010144962A1 (en) * | 2009-06-17 | 2010-12-23 | Francis Desmond Lourigan | A end plug |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130319564A1 (en) * | 2012-06-01 | 2013-12-05 | Cornelio Torres | Plumbing elbow |
| US9593475B2 (en) * | 2012-06-01 | 2017-03-14 | Cornelio Torres | Plumbing elbow |
| CN108730529A (en) * | 2018-06-14 | 2018-11-02 | 河南柴油机重工有限责任公司 | A kind of multimode compound seal having directional exhaust device and application method |
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