APPARATUS AND METHOD FOR PIPE REPAIR
20220120362 ยท 2022-04-21
Inventors
Cpc classification
F16L55/1608
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16L55/175
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
H02G1/00
ELECTRICITY
F16L55/168
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16L13/11
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
International classification
F16L13/11
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
The methods and devices described herein are for repairing a break in a pipe and also provide means for adding additional pipes to an existing pipe. According to a first embodiment, a pair of end connectors are installed on the broken ends of a pipe and then a sleeve is slid over the gap between the two broken ends. According to a second embodiment, two half cylinder connector pieces are placed around a broken pipe and then a cylindrical sleeve is placed over the top. According to a third embodiment, two half cylinder connector pieces are glued to each other and the broken pipe, one of the half cylinders having a branch for installing an additional pipe to the pipe system.
Claims
1. A system for joining a plurality of pieces of pipe, comprising: a first end connector; a second end connector, each of the first end connector and the second end connector, comprising: an outer cylindrical surface, an inner cylindrical surface, the inner cylindrical surface widening on a first side from a center towards an outer side resulting in a convex shape, a second side, cylindrical in shape, having an inner diameter that is less than a diameter of the outer cylindrical surface; a first circular end forming a lip on the first side; and a second circular end on the second side; and a cylindrical sleeve, comprising: an outer surface; an inner surface, the inner surface having an inside diameter larger than the outside diameter of the outer cylindrical surface of the first end connector and the second end connector; a first end; and a second end; the cylindrical sleeve surrounding the first end connector and the second end connector, spanning a space between the first end connector and the second end connector; and whereby a sealed connection is made between the first end connector and the second end connector when the cylindrical sleeve surrounds the first end connector and the second end connector and a bonding agent is placed on the outer surface of the first end connector, the outer surface of the second end connector and the inner surface of the cylindrical sleeve.
2. The system of claim 1, wherein the first end connector, the second end connector and the cylindrical sleeve are comprised of plastic.
3. The system of claim 1, wherein the first end connector, the second end connector and the cylindrical sleeve are comprised of metal.
4. The system of claim 1, wherein the bonding agent is placed between the first end connector and a first pipe and between the second end connector and a second pipe.
5. A system for joining a plurality of pieces of pipe, comprising: a first connector piece; and a second connector piece, each of the first connector piece and the second connector piece comprising: a first end; a second end; a top surface extending from the first end to the second end; a bottom surface corresponding to a shape of a pipe extending from the first end to the second end; a first edge joining the top surface and the bottom surface configured to engage with a first congruent edge of a connector piece; and a second edge opposite the first edge joining the top surface and the bottom surface configured to engage with a second congruent edge of the connector piece; whereby a sealed connection is created when the first edge and the second edge of the first connector piece engage with the first edge and the second edge of the second connector piece.
6. The system of claim 5, wherein a bonding agent is placed between the first connector piece and the second connector piece, on the first edge and the second edge of the first connector piece that engages with the first edge and the second edge of the second connector piece.
7. The system of claim 5, further comprising: a sleeve, comprising: an outer surface; an inner surface; a first end; and a second end.
8. The system of claim 7, wherein the sleeve is disposed around the first connector piece and the second connector piece.
9. The system of claim 7, wherein the first connector piece, the second connector piece and the sleeve are comprised of plastic.
10. The system of claim 7, wherein the first connector piece, the second connector piece and the sleeve are comprised of metal.
11. The system of claim 8, wherein a bonding agent is placed between the first connector piece and the second connector piece, on the first edge and the second edge of the first connector piece that engages with the first edge and the second edge of the second connector piece.
12. The system of claim 11, wherein a bonding agent is placed on the inside of the sleeve, bonding the sleeve to the first connector piece and the second connector piece.
13. A system for adding a new pipe to an existing pipe, comprising: a first connector piece; and a second connector piece, each of the first connector piece and the second connector piece comprising: a first end; a second end; a top surface extending from the first end to the second end; a bottom surface corresponding to a shape of a pipe extending from the first end to the second end; a first edge joining the top surface and the bottom surface configured to engage with a first congruent edge of a connector piece; and a second edge opposite the first edge joining the top surface and the bottom surface configured to engage with a second congruent edge of the connector piece; the first connector piece further comprising: a hole disposed through the first connector piece, extending from the top surface to the bottom surface of the first connector piece; and a pipe connection extending from the hole of the first connector piece; and whereby a sealed connection is created when the first edge and the second edge of the first connector piece engage with the first edge and the second edge of the second connector piece.
14. The system of claim 13, further comprising: one or more sleeves, the sleeves each comprising: an outer surface; an inner surface; a first end; and a second end.
15. The system of claim 14, wherein one or more sleeves are disposed around the first connector piece and the second connector piece on a first side and a second side of the pipe connection.
16. The system of claim 15, wherein a bonding agent is placed between the first connector piece and the second connector piece on the first edge and the second edge of the first connector piece that engages with the first edge and the second edge of the second connector piece.
17. The system of claim 16, wherein the bonding agent is placed on the inside of the one or more sleeves, bonding the one or more sleeves to the first connector piece and the second connector piece.
18. A method for connecting a plurality of pieces of pipe, the method comprising: aligning a first connector piece to partially cover an end of a first pipe and an end of a second pipe; and aligning a second connector piece to engage with the first connector piece and to partially cover the end of the first pipe and the end of the second pipe; wherein the first connector piece and the second connector piece engage with each other creating a sealed connection between the first pipe and the second pipe.
19. The method of claim 18, further comprising: placing a bonding agent between the first connector piece and the second connector piece, bonding the first connector piece and the second connector piece together. placing the bonding agent on the first connector piece between the first connector piece and the first pipe and between the first connector piece and the second pipe; and placing the bonding agent between the second connector piece between the second connector piece and the first pipe and between the second connector piece and the second pipe.
20. The method of claim 19, further comprising: placing a sleeve on the first pipe, sliding the sleeve over the first connector piece and the second connector piece after they are placed around the first pipe and the second pipe.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION
[0022] A pipe that is broken or intentionally cut can be difficult to repair when the pipe is in-situ. A pipe is in-situ if it is buried in the earth or installed within a building or other location where the pipe has already been incorporated into the infrastructure.
[0023] One particular problem of repairing an in-situ pipe is access. A pipe that needs to be repaired can be difficult to access if it is buried in the earth or located in a building where there is not enough clearance around the pipe to easily work on the pipe.
[0024] An additional complication is that the pipe may be in service at the time that it needs to be repaired. A pipe is in service if a substance is flowing or running through it. Pipes can be used to conduct liquids, gasses, wires or other substances. When the pipe is in service it may be difficult to interrupt the service to repair the pipe. If the pipe has active wires running through the pipe, the wires cannot be cut to repair the pipe. Pipes are used in commercial and residential applications.
[0025] Current methods for repairing a cut or broken pipe are laborious requiring multiple pieces that must be measured, cut and glued into place. A previous method for repairing a pipe involves wrapping the pipe with a leak proof material or a rubber gasket and then clamping that material onto the pipe. A second existing method is to install a new section of pipe with fittings on both ends to secure it to the pipe. The section of pipe must be cut to a precise length and fitted with appropriately sized fittings to securely repair the pipe.
[0026] Existing methods for repairing a broken or cut pipe do not always provide a water tight connection. A water tight connection is desirable because a pipe may be carrying potable water or sewage. If the water is potable having a leak may contaminate the water. A leak in a sewage pipe would contaminate the surrounding area. A water tight connection is desirable in many instances because water seeping into the pipe could damage the contents of the pipe, such as electrical wires.
[0027] The pipe repair system described herein is quick to install and provides a sealed connection between the two broken ends of the pipe. Two embodiments are described below. In the first embodiment end connectors are placed on the ends of the broken pipe and then a sleeve is slid over the top to seal the connection between the two pipe ends. In the second embodiment, two connector pieces that are each a half cylinder in shape are placed around the broken pipe and then a sleeve is slid over the two connector pieces securing the connection.
[0028] The pieces of the pipe repair system can be manufactured in any size so that they correspond to the size of the broken pipe. Repair pieces that correspond with standard pipe sizes are envisioned but repair pieces can also correspond to non-standard pipe sizes. The pieces of the pipe repair system can also be made from any suitable material for repairing a pipe, such as plastic or metal.
[0029]
[0030] The end connectors 120 are connected to the broken or cut pipe 110 by an adhesive, cement or other bonding agent. The sleeve 130 is bonded to the end connectors 120 by an adhesive, cement or other bonding agent. The fully formed connection, once the end connectors 120 and the sleeve 130 have been bonded onto the broken pipe 110, provides a sealed connection that can withstand the pressure of water or gas or another substance flowing through the pipe 110. The repair can also withstand forces from outside the pipe that might try to penetrate the repaired portion of the pipe, such as groundwater.
[0031] One embodiment of the invention is to repair a pipe that is in the ground. According to this embodiment the broken pipe 110 is exposed below the ground. It may be necessary to cut the ends of the broken pipe 110 so that they are even before repairing the break. The sleeve 130 is slid over one side of the broken pipe 110. Then, the end connectors 120 are installed on each end of the broken pipe 110. This includes placing an adhesive on the broken pipe 110 ends and/or on the end connectors 120 before they are inserted into the broken pipe 110 ends. An adhesive or some other type of bonding agent is placed on the outside of the end connectors 120 and then the sleeve 130 is slid over the top of the end connectors 120 so that the centerline of the sleeve 130 aligns with the centerline of the break in the pipe 110. Thus, the end connectors 120 and the sleeve 130 create a secure connection between the two ends of the broken pipe 110.
[0032]
[0033] According to one embodiment, the end connector 120 has an outer cylindrical surface 230 and an inner cylindrical surface 240. On the open side 210 of the end connector 120 that faces away from the pipe 110, the inner cylindrical surface 240 widens from the center towards the open side 210 resulting in a convex shape. The open side 210 of the end connector 120 that faces away from the pipe 110 is circular in shape and forms a narrow lip 250 thus guiding any substances flowing through the pipe 110 through the repaired section. On the pipe side 220 of the end connector 120 the inner surface of the end connector 120 is cylindrical and has a diameter slightly larger than the pipe 110 that the end connector 120 will be seated on. The pipe side 220 of the end connector 120 forms a circular end.
[0034] This design provides for a repair that does not narrow the cross section of the pipe 110. When the cross section of the repair is as wide as the broken pipe 110 then any substance flowing through the repaired pipe 110 is unimpeded. This helps to prevent clogs when the pipe 110 is in use. If the pipe 110 is being used to cover electrical wires, the broader cross section does not limit the number of wires that are passing through the pipe 110.
[0035] The sleeve 130 slides over the outside of the two end connectors 120. The position of the sleeve 130 on the outside of the end connectors 120 and the broken pipe 110 creates a larger diameter connection between the two ends of the in-situ pipe 110 and therefore does not limit the flow within the repaired pipe 110. The inside diameter of the sleeve 130 is only slightly larger than the outside diameter of the end connectors 120, thus providing a sealed connection once it has been glued on to the end connectors 120.
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[0037] The sleeve 130 has an outer surface 320 and an inner surface 330. According to one embodiment, the sleeve is cylindrical in shape and the outer surface 320 is a cylinder with a larger diameter than the inner surface 330 which is also a cylinder.
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[0039] The sleeve has a first end 410 and a second end 420. Each of these ends is circular in shape. The circular shape is best depicted in
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[0042] Each connector piece 610 and 620, according to this embodiment, is a half cylinder in shape. Each connector piece 610 and 620 has a first end 650 and a second end 660. According to this embodiment, the first end 650 and the second end 660 are half circles in shape. The first end 650 and the second end 660 are half circles in shape to accommodate a circular pipe but can be shaped differently to adapt to a pipe of a different shape or for ease of manufacture.
[0043] Each connector piece 610 and 620 has an inner surface 690 and an outer surface 680. According to this embodiment, the inner surface 690 and the outer surface 680 extend from the first end 650 to the second end 660. The inner surface 690 corresponds to the shape of the pipe that the connector pieces 610 and 620 are installed around. In this embodiment the inner surface 690 is concave to accommodate a cylindrical pipe.
[0044] The connector pieces 610 and 620 are joined together around the broken pipe 110 on the long edge 670 of the half cylinder. The long edge 670 extends from the first end 650 to the second end 660. Each long edge 670 has a tab 630 extending out that engages with a tab 640 on the other connector piece 620, so that each connector piece 610 can click onto the other connector piece 620. The two connector pieces 610 and 620 joining together and clicking into place create a sealed connection around the broken pipe 110.
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[0046] The two connector pieces 610 and 620 can be placed at any orientation around the pipe 110, above, below, left, right or at oblique angles to the centerline of the pipe 110. For the purposes of describing the two connector pieces a top half 610 and a bottom half 620 are referenced but as previously mentioned they can be placed at any orientation. Tabs 630 on either long edge 670 of the top connector piece 610 meet with tabs 640 on either long edge 670 of the bottom connector piece 620. The tabs 630 and 640 join together creating a firm connection between the top connector piece 610 and the bottom connector piece 620.
[0047] According to one embodiment a pipe 110 is cut to gain access to wires inside of the pipe 110. Repairs are made within the pipe 110 then the pipe 110 must be repaired in a manner that seals the pipe 110 closed but leaves the wires running through the pipe 110 intact. The embodiment described here creates an easy water tight seal for repairing the pipe 110. The two connector pieces 610 and 620 are snapped around the broken pipe 110 and sealed to each other and to the two broken pipe halves 110 by a glue or other bonding agent.
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[0054] The t-shaped connector 1010 is a half cylinder in shape. It has tabs 1060 on the long edge where it mates with the connector piece 1020. A cutout 1040 is removed from the middle of the half cylinder of the t-shape connector 1010 to accommodate a branch piece 1050 that extends perpendicular from the half cylinder. The cutout 1040 and the branch piece 1050 can be circular in shape according to some embodiments. A new pipe 1030 that is added into the t-shaped connector 1010 is placed inside of the branch piece 1050. The branch piece 1050 has an inside diameter that is slightly larger than the outside diameter of the new pipe 1030.
[0055] The t-shaped connector 1010 allows a new pipe 1030 to be added to the existing pipe 110. The connectors 1010 and 1020 are added to an existing pipe 110 by cutting an opening in the existing pipe 110. The t-shape connector 1010 can point in any direction from the pipe 110 being repaired. The angle at which the new pipe 1030 extends can be any angle and the t-shaped connector 1010 can point in any direction to accommodate that angle. The t-shaped connector 1010 can take on more of a y-shape to accommodate the angle that the new pipe 1030 intersects the existing pipe 110. Additionally, the cross-sectional area of the new pipe 1030 can be any of a variety of sizes. The t-shaped connector 1010 can have different sized openings to accommodate the different sizes of new pipe 1030.
[0056] The t-shaped connector 1010 can be used with a connector piece 1020 or with a second t-shaped connector 1010. If two t-shaped connectors 1010 are used, then two new pipes 1030 can be added to the existing pipe 110.
[0057] The t-shaped connector 1010 and the connector piece 1020 are bonded to the existing pipe 110 and then the new pipe 1030 is bonded to the t-shaped connector 1010. Gluing the connections ensures a water tight seal between the existing pipe 1010, the t-shaped connector 1010, the connector piece 1020 and the new pipe 1030.
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[0061] Glues and bonding agents for joining the various parts of the pipe repair system can include a PVC cement, an epoxy adhesive, or any other suitable material for joining pipe sections. Alternatively, if the pipes are metal the pieces of the pipe repair system can be welded onto the existing pipe and welded to each other.
[0062] From the foregoing, it will be appreciated that specific embodiments of the invention have been described herein for purposes of illustration, but that various modifications may be made without deviating from the scope of the invention. Accordingly, the invention is not limited except as by the appended claims.