WO2005040663A1 - Method for joining a pipe and a connector piece for use in the method - Google Patents
Method for joining a pipe and a connector piece for use in the method Download PDFInfo
- Publication number
- WO2005040663A1 WO2005040663A1 PCT/FI2004/000568 FI2004000568W WO2005040663A1 WO 2005040663 A1 WO2005040663 A1 WO 2005040663A1 FI 2004000568 W FI2004000568 W FI 2004000568W WO 2005040663 A1 WO2005040663 A1 WO 2005040663A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- connector piece
- hole
- pipes
- solder
- 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.)
- Ceased
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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe
- F16L41/082—Non-disconnectable joints, e.g. soldered, adhesive or caulked joints
- F16L41/084—Soldered joints
Definitions
- the present invention relates to a method for joining a pipe and more specifically a method, with the aid of which one pipe can be joined to another at essentially right angles.
- the invention also relates to a connector piece for use in the method.
- the conventional procedure for joining one pipe to another involves, in the first stage, making a hole at the desired connection point in the main pipe to which it is intended to connect the second pipe, notching the end of the pipe to be connected in such a way that the pipe to be connected lies essentially tightly on top of the main pipe, and placing a ring of solder around the hole in the main pipe so that, when the pipe to be connected is set in place, the ring remains entirely inside, but very close to the inner surface of the pipe to be connected, after which the area of the connection between the pipe being connected and the main pipe is heated with a soldering flame, thus melting the solder and welding the connection through the capillary phenomenon.
- the present invention is intended to alleviate the problem referred to above and for this purpose create a method that will make the joint more durable than known joints.
- Figure 1 shows a cross-section of an arrangement for applying the method according to the invention.
- Figure 2 shows the performance of the final stage of the method.
- Figure 1 shows a cross-section of the application of the invention.
- the main pipe 1 to which the second pipe 2 is connected, is any pipe at all in which a medium usually flows, particularly either water for transmitting heat from one place to another, or a cooling agent for arranging cooling in a desired place.
- the pipe or pipes can be conventional pipes with a circular cross-section, they can also be, for example, square pipes. It is obvious that the connection of square pipes will require the end of the pipe 2 being connected to be flat, in order to fit onto the flat external surface of the main pipe. Connecting round pipes to each other, however, will require the connecting end of the pipe 2 being connected to be suitably shaped to fit more or less tightly against the external surface of the main pipe 1.
- Figure 2 shows the final stage of the method being carried out, which corresponds completely to that according to the prior art, i.e. in it the connection area of the pipes 1 and 2 is heated with a flame, using a suitable jet nozzle 6.
- Figure 1 illustrates how the connection is made stronger and more durable than a conventional connection.
- an connector piece 4 is now used to support the joint.
- the work procedure is now one in which a hole 7 of the desired size is first drilled in the main pipe 1.
- the connector piece 4 which consists of a flange part 41 , with a diameter corresponding precisely to the internal dimension of the pipe 2 and of a tubular straight part 42, with a diameter corresponding precisely to the dimension of the drilled hole 7, is placed in the hole.
- a solder ring 3 is placed around the part 42, before it is set in the hole 7.
- a suitable tool is used to expand the bottom end of the tubular part 42 of the connector piece, thus preventing the connector piece 4 from leaving the hole and also setting the connector piece firmly in place.
- the pipe 2 to be connected is pushed on top of (around) the connector piece, so that the shaped bottom end (in the figure) of the pipe lies more or less tightly against the outer surface of the pipe 1.
- All that is now needed is heating with a flame from outside. Conventionally, the heating takes place in the area of the connection of the pipes 1 and 2.
- the solder ring 3, which is now close to the internal surface of the pipe 2 and is more or less on the outer surface of the pipe 1 melts and the capillary phenomenon sucks the solder into the joints, on the one hand, between the pipes 1 and 2 and, on the other, between the neck 42 of the connector piece 4 and the hole 7, and also between the flange part 41 and the internal surface of the pipe 2.
- After cooling a tight joint stabilized against movement has been created, which is clearly more durable than known joints under varying conditions.
- solder can be placed on top of the flange part 41 of the connector piece 4, as this location will ensure a better spread of the solder into the joints. If necessary, solder can be used both on top of the flange part 41 and also under the flange part 41 around the tubular part 42, thus ensuring the joints between the flange part and the internal surface of the pipe 2 being connected and between the hole and the pipes. The use of only a single ring of solder will usually be sufficient.
- the connector piece 4 is attached to the hole using a suitable tool, for instance, a pneumatically operated expander tool. Naturally any other tool that produces the desired effect can be used for this purpose.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention relates to a method, by means of which a side pipe (2) is joined to a main pipe (1) and in which a hole (7) of the desired size is made at the connection point in the main pipe.The end of the pipe to be connected is shaped to essentially fit the surface of the main pipe (1). Before the side pipe (2) is set in place in the hole (7) a connector piece (4) is attached to it, and the pipes (1, 2) are soldered together. The new and useful improvement consists in that the connector piece (4) is shaped to include a tubular part (42), with a size corresponding essentially to that of the hole (7) but with a diameter smaller than that of the pipe (2) and, at its upper end a flange part (41) that essentially corresponds to the internal dimension of the side pipe (2), and in that solder (3) is placed inside the side pipe to be connected, after which the pipes are heated, in order to melt the solder (3) and to create a soldered joint.
Description
Method for joining a pipe and a connector piece for use in the method
The present invention relates to a method for joining a pipe and more specifically a method, with the aid of which one pipe can be joined to another at essentially right angles. The invention also relates to a connector piece for use in the method.
The conventional procedure for joining one pipe to another, particularly in the case of copper pipes, involves, in the first stage, making a hole at the desired connection point in the main pipe to which it is intended to connect the second pipe, notching the end of the pipe to be connected in such a way that the pipe to be connected lies essentially tightly on top of the main pipe, and placing a ring of solder around the hole in the main pipe so that, when the pipe to be connected is set in place, the ring remains entirely inside, but very close to the inner surface of the pipe to be connected, after which the area of the connection between the pipe being connected and the main pipe is heated with a soldering flame, thus melting the solder and welding the connection through the capillary phenomenon.
The aforementioned procedure is both rapid and otherwise suitable for the stated purpose, except for the fact that the joint is liable to open in conditions in which some degree of movement acts upon the structures, as always happens when a medium that is hotter or colder than the surroundings flows through the pipe. This is mainly because the pipe being connected has no support other than that of the soldered joint.
The present invention is intended to alleviate the problem referred to above and for this purpose create a method that will make the joint more durable than known joints.
The aforementioned and other benefits and advantages of the present invention are achieved in the manner stated in the accompanying claims.
In the following, the invention is examined in greater detail with reference to the accompanying drawings.
Thus,
Figure 1 shows a cross-section of an arrangement for applying the method according to the invention; and
Figure 2 shows the performance of the final stage of the method.
Thus, Figure 1 shows a cross-section of the application of the invention. The main pipe 1 , to which the second pipe 2 is connected, is any pipe at all in which a medium usually flows, particularly either water for transmitting heat from one place to another, or a cooling agent for arranging cooling in a desired place. Though the pipe or pipes can be conventional pipes with a circular cross-section, they can also be, for example, square pipes. It is obvious that the connection of square pipes will require the end of the pipe 2 being connected to be flat, in order to fit onto the flat external surface of the main pipe. Connecting round pipes to each other, however, will require the connecting end of the pipe 2 being connected to be suitably shaped to fit more or less tightly against the external surface of the main pipe 1.
Figure 2 shows the final stage of the method being carried out, which corresponds completely to that according to the prior art, i.e. in it the connection area of the pipes 1 and 2 is heated with a flame, using a suitable jet nozzle 6.
Figure 1 illustrates how the connection is made stronger and more durable than a conventional connection. Thus, instead of using only a ring 3 of solder, which remains inside the pipe 2 being connected when the pipe 2 is pushed into contact with the main pipe 1 , an connector piece 4 is now used to support the joint.
In fact, the work procedure is now one in which a hole 7 of the desired size is first drilled in the main pipe 1. Next, the connector piece 4, which consists of a flange part 41 , with a diameter corresponding precisely to the internal dimension of the pipe 2 and of a tubular straight part 42, with a diameter corresponding precisely to the dimension of the drilled hole 7, is placed in the hole. A solder ring 3 is placed around the part 42, before it is set in the hole 7. After this, a suitable tool is used
to expand the bottom end of the tubular part 42 of the connector piece, thus preventing the connector piece 4 from leaving the hole and also setting the connector piece firmly in place.
Next, the pipe 2 to be connected is pushed on top of (around) the connector piece, so that the shaped bottom end (in the figure) of the pipe lies more or less tightly against the outer surface of the pipe 1. All that is now needed is heating with a flame from outside. Conventionally, the heating takes place in the area of the connection of the pipes 1 and 2. The solder ring 3, which is now close to the internal surface of the pipe 2 and is more or less on the outer surface of the pipe 1 , melts and the capillary phenomenon sucks the solder into the joints, on the one hand, between the pipes 1 and 2 and, on the other, between the neck 42 of the connector piece 4 and the hole 7, and also between the flange part 41 and the internal surface of the pipe 2. After cooling, a tight joint stabilized against movement has been created, which is clearly more durable than known joints under varying conditions.
Alternatively, the solder can be placed on top of the flange part 41 of the connector piece 4, as this location will ensure a better spread of the solder into the joints. If necessary, solder can be used both on top of the flange part 41 and also under the flange part 41 around the tubular part 42, thus ensuring the joints between the flange part and the internal surface of the pipe 2 being connected and between the hole and the pipes. The use of only a single ring of solder will usually be sufficient.
In the structures of some technical devices, several side pipes must be connected to a main pipe 1. According to the invention, there is no limitation to the number of pipes that can be connected. Soldering can be easily performed as a serial operation. The use of the connector piece 4 allows the easy alignment of the pipes to be connected, while the connector piece will also help to retain the alignment during assembly and soldering, leading to fewer faulty results.
The connector piece 4 is attached to the hole using a suitable tool, for instance, a pneumatically operated expander tool. Naturally any other tool that produces the
desired effect can be used for this purpose.
It is obvious that, if necessary, conventional soldering/welding from outside can be used instead of, or in addition to the soldering described to ensure the connection of the pipes 1 and 2.
Claims
1. A method, by means of which a side pipe (2) is joined to a main pipe (1) and in which a hole (7) of the desired size is made at the connection point in the main pipe, the end of the pipe to be connected is shaped to essentially fit the surface of the main pipe (1), before the side pipe (2) is'set in place in the hole (7) a connector piece (4) is attached to it, and the pipes are soldered together, characterized in that the connector piece (4) is shaped to include a tubular part (42), with a size corresponding essentially to that of the hole but with has a diameter smaller than that of the side pipe (2) and, at its upper end, a flange part
(41) that essentially corresponds to the internal dimension of the side pipe (2), and that solder (3) is placed inside the side pipe to be connected, after which the pipes are heated, in order to melt the solder (3) and to create a soldered joint.
2. A method according to Claim 1 , characterized in that the connector piece (4) is attached to the hole (7) in the pipe (1) by expanding the end of the tubular part
(42) inside the pipe (1 ).
3. A method according to Claim 1 , characterized in that the solder is placed, for example, in the form of a ring (3) inside the side pipe (2) to be connected.
4. A method according to Claim 3, characterized in that the solder is placed as a ring lying around the tubular part (42) of the connector piece (4) and/or as a ring lying on top of the flange part (41 ) of the intermediate piece (4).
5. A method according to Claim 1 , characterized in that the soldering/welding is performed by heating the connection area of the pipes (1 , 2) with an external flame.
6. A connector piece for use in a method, in which a side pipe (2) is connected to a main pipe (1), and in which a hole (7) of the desired size is made in the main pipe at the connection, the end of the pipe being connected is shaped to essentially fit the surface of the main pipe (1), and the pipes are soldered together, characterized in that the connector piece (4) is formed of a part (4), in which there is a tubular part (42) that essentially corresponds to the size of the hole, but is smaller than the inner diameter of the side pipe (2), at the upper end of which there is a flange-like part (41 ) that corresponds essentially to the internal diameter of the pipe (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20031549 | 2003-10-23 | ||
| FI20031549A FI20031549A7 (en) | 2003-10-23 | 2003-10-23 | Method for connecting a pipe and a spacer for performing the method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005040663A1 true WO2005040663A1 (en) | 2005-05-06 |
Family
ID=29225986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FI2004/000568 Ceased WO2005040663A1 (en) | 2003-10-23 | 2004-09-30 | Method for joining a pipe and a connector piece for use in the method |
Country Status (2)
| Country | Link |
|---|---|
| FI (1) | FI20031549A7 (en) |
| WO (1) | WO2005040663A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI513929B (en) * | 2014-04-17 | 2015-12-21 | Tsung Jung Wang | Tool and Method of Integrally Forming Manifold |
| EA037675B1 (en) * | 2018-01-20 | 2021-04-29 | Иностранное частное торговое унитарное предприятие "Ростела" | Method for connecting elbow with pipeline |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE456503C (en) * | 1928-02-24 | Mathilde Willutzki Geb Risse | Pipe connection for soldered bicycle frames | |
| FR945496A (en) * | 1947-04-19 | 1949-05-05 | Bicycle frame | |
| GB2092692A (en) * | 1981-02-05 | 1982-08-18 | Flowdrilling Uk Ltd | Improvements in pipe joints |
| US6161876A (en) * | 1995-06-22 | 2000-12-19 | Valeo Thermique Moteur | Elbow connection for tubular manifold for a motor vehicle air-conditioning condenser |
-
2003
- 2003-10-23 FI FI20031549A patent/FI20031549A7/en unknown
-
2004
- 2004-09-30 WO PCT/FI2004/000568 patent/WO2005040663A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE456503C (en) * | 1928-02-24 | Mathilde Willutzki Geb Risse | Pipe connection for soldered bicycle frames | |
| FR945496A (en) * | 1947-04-19 | 1949-05-05 | Bicycle frame | |
| GB2092692A (en) * | 1981-02-05 | 1982-08-18 | Flowdrilling Uk Ltd | Improvements in pipe joints |
| US6161876A (en) * | 1995-06-22 | 2000-12-19 | Valeo Thermique Moteur | Elbow connection for tubular manifold for a motor vehicle air-conditioning condenser |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI513929B (en) * | 2014-04-17 | 2015-12-21 | Tsung Jung Wang | Tool and Method of Integrally Forming Manifold |
| EA037675B1 (en) * | 2018-01-20 | 2021-04-29 | Иностранное частное торговое унитарное предприятие "Ростела" | Method for connecting elbow with pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| FI20031549L (en) | 2005-04-24 |
| FI20031549A7 (en) | 2005-04-24 |
| FI20031549A0 (en) | 2003-10-23 |
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