CA2490943A1 - High-pressure fastening tee assembly - Google Patents

High-pressure fastening tee assembly Download PDF

Info

Publication number
CA2490943A1
CA2490943A1 CA 2490943 CA2490943A CA2490943A1 CA 2490943 A1 CA2490943 A1 CA 2490943A1 CA 2490943 CA2490943 CA 2490943 CA 2490943 A CA2490943 A CA 2490943A CA 2490943 A1 CA2490943 A1 CA 2490943A1
Authority
CA
Canada
Prior art keywords
shell
conduit
neck
assembly
port
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA 2490943
Other languages
French (fr)
Inventor
Jared Sayers
Amanjeet Dhaliwal
David Ebl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RED FLAME HOT TAP SERVICES Ltd
Original Assignee
RED FLAME HOT TAP SERVICES Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RED FLAME HOT TAP SERVICES Ltd filed Critical RED FLAME HOT TAP SERVICES Ltd
Priority to CA 2490943 priority Critical patent/CA2490943A1/en
Priority to US11/311,481 priority patent/US20060151997A1/en
Publication of CA2490943A1 publication Critical patent/CA2490943A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00Branching pipes; Joining pipes to walls
    • F16L41/04Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
    • F16L41/06Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor making use of attaching means embracing the pipe
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00Branching pipes; Joining pipes to walls
    • F16L41/08Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/12Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe using attaching means embracing the pipe

Abstract

Referring to FIGS. 12 - 24d, a third embodiment of the fastening tee assembly 10 of the present invention is shown. This embodiment of the fastening tee assembly 10 is similar to the second embodiment, the major difference being that it has fewer holes 28 in the top and bottom shells 12, 14 and said shells 12, 14 are configured to clamp or mount around a smaller diameter conduit (not shown) than that of the second embodiment.

Description

1 "HIGH-PRESSURE FASTENING TEE ASSEMBLY"
4 The field of present invention relates generally to providing a high-s pressure fastening tee assembly and, more particularly, to providing a high-6 pressure fastening tee assembly having improved sealing means and which is also 7 lighter and simpler to manufacture.

Fastening tees assemblies are typically used when tapping into high-11 pressured piping systems, such as gas pipelines, drill string, coil tubing or other 12 such conduit, without the need for welding .
13 However, traditional fastening tees assemblies employ inferior sealing 14 technology, are expensive to manufacture and are heavy. The prior art typically provides sealing means in the form of an o-ring or rubber gasket on the inside of 16 the top shell of such a tee assembly (see FIG. 1), said o-ring or gasket to be 17 compressed against the conduit or pipeline when the top and bottom shells are 18 assembled together around said conduit. These prior art sealing technologies limit 19 the amount of pressure that a fastening tee assembly is able to withstand.
A typical upper pressure rating for such prior art fastening tee assemblies is 1500psi.
21 An advantage therefore exists for a fastening tee assembly to have 22 better seating means, be easier and less expensive to manufacture and be lighter.

2 FIG. 1 is a perspective view of a top shell of a prior art fastening tee 3 assembly, showing the placement of the sealing gasket or o-ring;
4 FIGS. 2 - 4 are various views of a first embodiment of a fastening tee assembly of the present invention;
6 FIGS. 5 -11 are various views of a second embodiment of a fastening 7 tee assembly of the present invention; and 8 FIGS. 12 - 24d are various views of a third embodiment of a fastening 9 tee assembly of the present invention.

12 Reference is to be had to the Figures in which identical reference 13 numbers identify similar components.

Referring generally to the Figures, various embodiments of a fastening 16 tee assembly 10 of the present invention are shown. These various embodiments 17 of the fastening tee assembly 10 comprise paired shells 12, 14 (hereinafter referred 18 to as top and bottom shells 12, 14, although the orientation may vary during 19 installation or operation and is not an essential feature of the invention), fastening means 16, a non-pressure branch or neck 18 projecting from the top shell 12, a 21 pressure carrying branch 20 having a sealing end 20s (said end 20s preferably 22 coped b match the outer diameter of the conduit), a seal 24 suitable for sealing 23 engagement between the pressure carrying branch's sealing end 20s and the 1 conduit (not shown and a locking or compressing collar 26 preferably having an 2 internally threaded portion 26t. Preferably the assembly 10 further comprises anti-3 rotation means 22 to prevent the pressure carrying branch 20 from rotating axially 4 relative to the non-pressure branch 18.
The non-pressure branch 18 preferably is a cylindrical tube having a 6 threaded end 18t suitable to threadably engage the locking collar's threaded portion 7 26t. The non-pressure branch 18 further comprises an internal diameter or port 18d 8 for accepting the pressure carrying branch 20 and the seal 24 thenethrough, 9 pn3ferably at close tolerances. The non-pressure branch 18 may be an integral part of the top shell 12 (e.g. by being welded thereto) such as in the first embodiment 11 (see FIGS. 2 - 4), or the non-pressure branch 18 may be a separate component 12 shaped so as to fit with a cbse tolerance through the top shell 12, such as in the 13 second and third embodiments.
14 The pressure carrying branch 20 preferably is a cylindrical tube having a shoulder portion 20a and shaft portion 20b. The pressure carrying branch 20 16 further comprises an internal diameter or port 20d for accepting a hot tap machine 17 (not shown) or drill (not shown) axially there-through 18 The locking collar ~ preferably comprises an aperture a6a of such 19 diameter so as to allow axial passage of the pressure carrying branch 20 there-through, except for the shoulder portion 20a. It will be recognized by those skilled in 21 the art that other configurations of the locking collar 26 are possible, and not depart 22 from the invention, as long as the locking collar 26 functions to force or compress 1 the pressure carrying branch 20 and the seal 24 through the non pressure branch 2 18 (i.e. through the inside diameter 18d) and against the conduit (not shown).
3 The top and bottom shells 12, 14 are generally shaped as shown in 4 the Figures and in the conventional manner, so as to mount to high-pressured piping systems, such as gas pipelines, drill strings, coil tubing or other such 6 conduits (not shown). Prefet~ably the top and bottom shells 12, 14 each have a 7 plurality of holes 28 for receiving bolts 16b them-through, so as to fasten the two 8 shells 12, 14 together around a conduit (not shown).
9 The seal 24 is of the appropriate dimensions so as to seal the pressure carrying branch 20 against the high pressure conduit (not shownj, when 11 said branch 20 and the seal 24 are inserted through inside diameter 18d and ford 12 against the conduit (not show) . In particular, the seal 24 will create a seal between 13 inside diameter 20d of the pressure branch 20 and the inside diameter 18d of the 14 non pressure branch 18 such that when a drill or hot tap machine (not shown) is advanced through the inside diameter 20d of the pressure branch 20 and cuts 16 through the conduit (not show), any pressurized contents inside the conduit will be 17 allowed into the inside diameter 20d of the pressure branch 20, but will be 18 prevented from escaping into the inside diameter 18d of the non pressure branch 19 18. Preferably the seal 24 is a rubber seal generally shaped as shown in and 9. More preferably, the seal means 24 is constricted from VitonT"' rubber 21 manufactured by The Dow Chemicals of Wilmington, Delaware, U.S.A..
22 In operation, the shaft portion 20d of the pressure carrying branch 20 23 slides through the port 18d of the non-pressure branch 18 thereby advancing the 1 sealing end 20s and the seal 24 there-through and against the conduit (not shown), 2 see FIGS. 8 - 9. The collar 26 is then utilized to clamp the pressure carrying branch 3 20 down against the conduit (not shown), thereby giving the pressure carrying 4 branch 20, and hence the seal 24, compression against the conduit (not shown), see FIG. 11. Because the seal 24 is inside port 18d, said port 18d prevents the seal 6 24 from extruding when pressurized or compressed. Advantageously, this 7 arrangement of the seal 24 inside the port or inside diameter 18d, between the 8 sealing end 20s of the pressure carrying branch 20 and the conduit (not show), 9 allows the fastening tee assembly 10 of the present invention to be rated for pressures as high as 27,OOOpsi.
11 Preferably, an anti-rotation means 22 is provided to ensure that the 12 cope of the pressure carrying branch's 20 sealing end 20s remains properly aligned 13 with the main run of conduit (not shown). Advantageously, the anti-rotation means 14 22 will also allow an operator to tighten a valve on the pressure carrying branch 20 (preferably said branch 20 has an extemaliy treaded portion, as shown in FIGS.
3, 16 6, and 9- 11, to facilitate attachment of a valve).

18 First embodiment 19 Referring to FIGS. 2 - 4, a first embodiment of the fastening tee assembly 10 of the present invention is shown. This embodiment of the fastening 21 tee assembly 10 comprises a non-pressure branch 18 which is an integral part of 22 the top shell 12, by being welded thereto. This embodiment further comprises a 23 key-and-groove anti-rotation means 22, and lateral tabs 12t, 14t on the top and 1 bottom shells 12, 14 (where the plurality of holes 28 for receiving bolts 16b there-2 through are located).
3 The anti-rotation means 22 of this embodiment comprises a tab or key 4 30 projecting from the shaft 20b of the pressure carrying branch 20 and a matching key-way or groove 32 in the internal diameter or port 18d of the non-pressure 6 branch 18. Typically, and so as to allow for sealing of the assembly 10 against a 7 high-pressure piping system, the key-way or groove 32 does not extend all the way 8 along the longitudinal axis of the internal diameter or port 18d, but rather only 9 extends partially from the top of the non-pressure branch 18. Likewise the key or tab 30 is also only of a certain limited length along the axis of the shaft 20b.

12 Second embodiment 13 Referring to FIGS. 5 - 11, a second embodiment of the fastening tee 14 assembly 10 of the present invention is shown. This embodiment of the fastening tee assembly 10 comprises a non-pressure branch 18 which is not an integral part 16 of the top shell 12, but instead passes through an aperture 12a in said shell 12, 17 preferably at a close tolerance, and is mounted in place by bolts or Allen screws 38.
18 This embodiment of the assembly 10 further comprises a dog-arid-recess anti-19 rotation means 22.
In particular this embodiment the top shell 12 comprises an aperture 21 12a having a shoulder 12c, and the non-pressure branch 18 comprises an end 18b 22 with a slightly enlarged outside diameter, the remainder of the branch's 18 outside 23 diameter is of such size so as to fit through the top shell's aperture 12a.

1 Accordingly, the non-pressure branch 18 is mounted to the top shell 12 by being 2 inserted through the aperture 12a until the branch's enlarged diameter 18b catches 3 on the shoulder 12c, at which point the screws 38 are utilized to retain the two 4 pieces 12,18 together (see FIGS 5 and 7).
The non-pressure branch 18 further comprises one or more dogs 40 6 projecting axially from the end of the branch 18 opposite the enlarged diameter 18b 7 (see FIGS 5 and 9). The pressure carrying branch 20 comprises the or more 8 recesses 42, located in the shoulder portion 20a, so as to match or cope with the 9 one or more dogs 40 of the non~pressure branch 18 (see FIG. 10). This embodiment of the anti-rotation means 22 is stronger than that of the first 11 embodiment.
12 This embodiment of the assembly 10, lacks the lateral tabs 12t, 14t 13 of the first embodiment and is therefore lighter than the first embodiment.
This 14 embodiment also does not require the welding of the non pressure branch 18 to the top shell 12, thereby making manufacturing of the assembly easier and more 16 efficient.

Claims (15)

1. A fastening tee assembly for use on a conduit, the conduit generally having pressurized contents, the assembly comprising:
a first shell having a port therethrough;
a second shell;
fastening means to fasten said first and second shells around the conduit;
a pressure carrying branch suitable for insertion through the first shell's port and having a sealing end and an inside passage, said inside passage suitable for accepting a drill or hot tap machine therethrough;
a seal suitable for creating a sealing engagement between the pressure carrying branch's sealing end and the conduit; and engagement means to maintain the sealing engagement between the pressure carrying branch's sealing end and the conduit.
2. The assembly of claim 1 wherein the engagement means further comprises:
a neck projecting from the first shell and forming said port, the neck having a threaded end;

a shoulder portion on said pressure carrying branch; and a locking collar having an internally threaded portion suitable for threading on the neck's threaded end and further having an aperture of such dimensions so as to allow axial passage of substantially all the pressure carrying branch therethrough with the exception of the shoulder portion.
3. The assembly of claim 2 wherein the neck is an integral part of the first shell.
4. The assembly of claim 2 wherein the neck is a separate component shaped so as to substantially mount through an aperture in the first shell.
5. The assembly of claim 4 further comprising:
a second shoulder associated with the aperture in the first shell; and an enlarged outside diameter portion on said neck;
wherein when the neck is mounted through the first shell's aperture said enlarged outside diameter catches on said second shoulder.
6. The assembly of claims 1 to 5 further comprising anti-rotation means.
7. The assembly of claim 6 wherein the anti-rotation means comprises a tab projecting from the pressure carrying branch and a matching groove in the port of the first shell.
8. The assembly of claim 6 wherein the anti-rotation means comprises at least one dog projecting axially from the neck and the pressure carrying branch further comprises at least one recess suitable for coping with said dog.
9. The assembly of claims 1 to 8 wherein the fastening means comprises bolt means and a plurality of matching and aligning holes through said first and second shells, wherein, said holes are suitable for receiving said bolt means.
10. A shell for use with a fastening tee assembly, the shell comprising:
a port suitable for accepting a pressure carrying branch;
a neck projecting from the shell and forming said port, the neck having a threaded end.
11. The shell of claim 10 wherein the neck is an integral part of the shell.
12. The shell of claim 10 wherein the neck is a separate component shaped so as to substantially mount through an aperture in the shell.
13. The assembly of claim 12 further comprising:
a second shoulder associated with the aperture in the shell; and an enlarged outside diameter portion on said neck;
wherein when the neck is mounted through the shell's aperture said enlarged outside diameter catches on said second shoulder.
14. A method of creating a seal between a conduit and a tubular member, said conduit having a pressurized contents and said tubular member having a sealing end, the method comprising the steps of:
providing at least one shell suitable for engaging the conduit, said shell having a port therethrough;
providing a seal suitable for creating a sealing engagement between the tubular member's sealing end and the conduit;
fastening the shell against the conduit;
inserting the seal and the tubular member through the port so that the seal is positioned between the conduit and the tubular member's sealing end;
creating a sealing engagement between the tubular member's sealing end and the conduit; and maintaining said sealing engagement for a desired length of time.
15. The method of claim 14 wherein the seal is positioned substantially inside the port when said sealing engagement is created.
CA 2490943 2004-12-22 2004-12-22 High-pressure fastening tee assembly Abandoned CA2490943A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA 2490943 CA2490943A1 (en) 2004-12-22 2004-12-22 High-pressure fastening tee assembly
US11/311,481 US20060151997A1 (en) 2004-12-22 2005-12-20 High-pressure fastening tee assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2490943 CA2490943A1 (en) 2004-12-22 2004-12-22 High-pressure fastening tee assembly

Publications (1)

Publication Number Publication Date
CA2490943A1 true CA2490943A1 (en) 2006-06-22

Family

ID=36636702

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2490943 Abandoned CA2490943A1 (en) 2004-12-22 2004-12-22 High-pressure fastening tee assembly

Country Status (1)

Country Link
CA (1) CA2490943A1 (en)

Similar Documents

Publication Publication Date Title
US6405762B1 (en) Composite pipe assembly and method for preparing the same
US11644136B2 (en) Flexible pipe joint
US20220364645A1 (en) Hydraulic fluid pump and stuffing box assembly for same
US20180119851A1 (en) Pipe, pipe connection and pipeline system
CN1342254A (en) Pipe coupling
US9243728B2 (en) Pipe with reinforced female end
CA2626695A1 (en) Fitting for tube and pipe
US5577776A (en) Tee fitting for lined pipe
US20090160184A1 (en) End Connector For Flexible Pipe
NO313304B1 (en) Inflatable gasket for placement along a pipe string in a well channel
GB2312030A (en) Pipe fitting for installation in a fluid container aperture
US20060151997A1 (en) High-pressure fastening tee assembly
US10632518B2 (en) Pipe end forming methods and pipe clamp
US5842496A (en) Hot tap connection and method for production thereof
US5737822A (en) Corporation stop assembly
CA2490943A1 (en) High-pressure fastening tee assembly
EP3728924A1 (en) Joining metal fittings to a polymer composite pipe
US20210381653A1 (en) Pipeline supplemental containment wall systems and methods
US11353131B2 (en) Gate valve bonnet connector
US11555564B2 (en) System and method for auxiliary line connections
US11236851B1 (en) Quick connect pipe fitting systems and methods
RU2201547C2 (en) Device for changing gate valves under pressure
US11781694B2 (en) Clamped saddle for directional hot-tapping tubulars
EP3405644B1 (en) Pipe coupling
US20240003455A1 (en) Hybrid direct tap corporation stop

Legal Events

Date Code Title Description
EEER Examination request
FZDE Dead