Source: https://patents.google.com/patent/NL1014138C2/en
Timestamp: 2020-08-09 04:10:16
Document Index: 530126026

Matched Legal Cases: ['art 3', 'art 9', 'art 9', 'art 5', 'art 3', 'art 18', 'art 19', 'art 29']

NL1014138C2 - Sock and connector. - Google Patents
Sock and connector. Download PDF
NL1014138C2
NL1014138C2 NL1014138A NL1014138A NL1014138C2 NL 1014138 C2 NL1014138 C2 NL 1014138C2 NL 1014138 A NL1014138 A NL 1014138A NL 1014138 A NL1014138 A NL 1014138A NL 1014138 C2 NL1014138 C2 NL 1014138C2
NL1014138A
NL1014138A1 (en
Renske Anne Sloff
Schoonen Marinus Henricus M
2000-01-20 Application filed by Schoonen Marinus Henricus M filed Critical Schoonen Marinus Henricus M
2000-01-20 Priority to NL1014138 priority Critical
2000-01-20 Priority to NL1014138A priority patent/NL1014138C2/en
2001-07-23 Publication of NL1014138A1 publication Critical patent/NL1014138A1/en
2001-07-31 Publication of NL1014138C2 publication Critical patent/NL1014138C2/en
Sock and connector.
The present invention relates to a sock to be applied to a tube comprising a sleeve-shaped part provided with a receptacle for that tube and an internal screw thread for engagement on that tube.
Such a sock is generally known in the art and can be designed on both sides as a coupling piece. This is used, for example, for connecting pipes that are threaded. Thereby the screw thread is placed on the free end of the pipes and the sock is fixed on this screw thread. The outside diameter of the socket is greater than the outside diameter of the respective pipe or pipe on which the screw thread is applied.
This means that no smooth whole is created. In certain applications, the smoothness of the connection between two pipes is essential. An example are pipelines in greenhouses. These are often used for moving so-called 15 tube wagons over them, with the wheels moving over the tubes. It will be understood in such an application that diameter differences of the pipe by coupling pieces and the like will be inadmissible.
Therefore, at the moment, most pipes are joined together by welding. This welding takes place in the greenhouse. Working conditions are generally unfavorable there, and the government increasingly sets strict requirements with regard to the working environment, so that this welding becomes increasingly difficult to carry out. Apart from the welding itself, i.e. the smoke generated thereby, there is a problem of protecting the exterior of the tubes from corrosion. In general, such pipes are supplied in different ways. Firstly, it is possible to provide the pipe with a corrosion-resistant layer over the entire length. However, problems arise where the welding has to take place. Galvanic treatment is not allowed at all, because the (zinc) vapors generated during welding are harmful to health. Another option is to supply the pipe with so-called paint-free ends.
In any case, after welding it is necessary to separately treat the welding site with an anti-corrosion agent. Depending on the protection, it is often chosen to provide this entire pipe with a further anti-corrosion cover. It will be understood that the conditions in a greenhouse are far from optimal 101 4138 2 and that the use of certain protection methods is not feasible or not permitted in greenhouses.
US-3489445A discloses a connection (fig. 3) between two solid rods. One of the rods has an internally threaded bore 5 while the other rod has a narrowed externally threaded end. As with certain wood constructions, the screw thread is not immediately at the beginning of the bore but at some distance from it. In the intermediate part, there is considerable space between the bore and the narrowed end of the other rod. From WO 94/11664 a sock is known consisting of an internal screw thread part. A conical surface is provided near the end limit of the sock. However, this extends over a very small part of the wall thickness of the sock so that if a corresponding conical part of a pipe were screwed against it, there would be no smooth transition.
The object of the present invention is to provide a connection between two pipes which, of course, is firstly waterproof because such pipes are used for water heating purposes. Secondly, the aim is to make the connection smooth, so that it is possible to drive over it with tubular wagons. Thirdly, the object of the invention is to achieve all this without welding, so that pipes can be provided which are provided with a corrosion-resistant layer over the entire length and which require little or no post-treatment.
This object is achieved with a sock described above in that the length (b) of that receptacle corresponds at least to the length (a) of that screw thread and that the inlet opening of that receptacle is provided with a conical tapering part, which conical tapering part extends substantially over the entire wall thickness of that sock.
It has been found that the socks or plugs known from the prior art are in no way suitable for coupling with threaded connections or pipe parts that are used in greenhouses. After all, such tube parts have considerable length and considerable weight. As an example, a weight of about 25 kilos and a length of 6 meters or more is mentioned. If one tube is provided with a socket or coupling piece, it is impossible to fit the other tube in a sock according to the prior art. This is possible by using the run-in part according to the 1014138 3 invention. Precise centering is achieved by the considerable length of the recording. Sliding together in the picture is relatively simple.
Sealing is in any case caused by the engagement of the conical tapering part of the sock and the corresponding pipe part. Optionally, further sealing means may be present.
The sock described above can be single. This can comprise an end stop for sealing a pipe section. In addition, it is possible to make further provisions on the end face for connection to other systems.
However, it is also possible to integrate two or more such socks. This creates coupling pieces, corner pieces, T-connections, etc. In such designs it is advantageous if stops are present which limit the maximum screwing in of the pipe. That is to say, in addition to the stop formed by the conically tapering part, at the inlet of the receptacle there is a further stop for the tubes. It will be understood that due to production tolerances, the stops located inside the coupling piece will not always be functional.
If more than one screw thread is present, such as, for example, in the coupling piece, it is preferable to use different types of screw thread. If in a straight coupling piece a left and right screw thread is used and the pipe sections are provided with corresponding left and right screw thread, it is sufficient to press the pipes against each other when inserting the coupling piece according to the invention. Due to the precise centering with the receptacle according to the invention, when further pressure is exerted and the coupling piece is rotated, the start of the connection between the two pipe parts via the coupling piece 25 can be effected. Further rotation of the coupling piece can provide a fixed connection between the pipe parts. In order to obtain the above-described smooth continuous appearance of the combination of sock-tube, it is proposed according to the invention to provide the relevant tubes with a narrowed tapering end. If this is produced, for example, by butting, the wall thickness at the end will therefore automatically increase relative to the wall thickness of the remaining part of the tube. This increase in wall thickness is advantageous because the screw thread must be arranged in that part. In order to keep the thread height limited, it is proposed to use a relatively fine thread, such as a metric 1014138 4 fine thread. A transition portion is provided between the smaller diameter portion of the tube and the main diameter. According to the invention, this is preferably carried out in accordance with the conical part when the sock is received. As a result, in addition to a very good sealing, a very good clamping connection between the sock and the pipe section concerned can be realized. It has been found that loosening by hand is no longer possible after the sock has been tightened by hand and the pipe section thus constructed. Tools are required for this.
Of course, for fixing, tools may be provided for such tools. An example is a hole into which a hook wrench can be inserted to rotate the sock. If a coupling piece is used, such a blind hole is preferably provided at the location of the breast, so that the material weakening occurring through the hole is not important.
The conical angle of the opening of the recording is preferably between 15 and 45 ° and more particularly about 30 °.
The invention also relates to a method for manufacturing a conduit strand, comprising providing at least three pipe parts interconnected with at least two coupling pieces, wherein a rotating force is imposed on the strand from one side for tightening the connection when stopping at least one of those connectors.
With the aid of the invention it is possible to use pipes and coupling pieces which have been completely provided with an anti-corrosion coating beforehand. No further treatment is necessary after application. Moreover, it will be understood that the manufacture of connections between two pipes by unskilled person can take place both indoors and outdoors under any circumstance. This is in contrast to the welding described above. In addition, it will be understood that if corner pieces, T-pieces, and the like are used, in combination with the pipe sections, any desired design of piping systems can be realized. That is, U-bends, junctions, couplings and the like constructions conceivable in the prior art can be realized with the coupling pieces / socket pin according to the invention.
The invention will be explained in more detail below with reference to illustrative embodiments shown in the drawing. Show: 1014138 5
Fig. 1 is a schematic cross-sectional view of a coupling piece and tube for mounting;
Fig. 2 two pipes and the coupling piece according to fig. 1 during installation;
Fig. 3 connector and tubes after application; FIG. 4 an end stop; and
Fig. 5 a corner piece according to the invention.
In Fig. 1 a pipe is indicated by 1. Such a tube can, for example, be used for heating purposes. This tube can have any length customary in the prior art, for example 6, 9 and 10 m. The part of the tube with the main diameter is indicated by 2. Via a transition part 3, the end of the tube is provided with a narrowed part with a smaller diameter, which part is indicated by 4. At the location the wall thickness is slightly larger and a thread 5 with a small thread height, for example metric fine thread with a pitch of, for example, 1.5 mm, is arranged therein.
7 indicates the coupling piece according to the invention in fig. 1 in part.
This consists of a lead-in part or receptacle 8 of length a, which tapers towards the free end in a conical part 9. On the other hand, the lead-in part or receptacle is provided with a screw thread 10 of length b. Thread 10 is followed by a material thickening or chest 12 in which a hole 13 is provided for gripping a hook spanner. Subsequently, a further screw thread 11 is provided. This is followed by a further run-in part or receptacle 8 to which a conical part 9 connects. In the embodiment shown in Figs. 1-3, the screw thread 10 is wound in opposite directions to the screw thread 11. Of course, screw thread 10 corresponds to screw thread 5 on tube 1.
Fig. 2 shows that a further tube 6 is additionally present. This is of course provided at the end with a screw thread that corresponds to screw thread 11.
It can be seen from Fig. 2 that with the help of the run-in part or receptacle 8 the centering of the threaded part 5, ie the pipe end with respect to the screw thread 11, is possible. This is important because the weight of the tubes according to the invention is often considerable. If such a centering possibility does not exist, it is virtually certain that a non-straight attachment takes place between the coupling piece and the pipe section concerned, which on the one hand results in leakage and on the other hand destruction of the threaded part.
Fig. 3 shows the end situation in which the coupling piece and the tubes 1, 6 are firmly connected to each other. From this it appears that the conicity of the opening, which is indicated by 95, corresponds to the conicity of the transition part 3. This provides sealing effect. Stop 12 can optionally serve for further sealing, for example by placing an O-ring or other sealing means therein.
It can be seen from Fig. 3 that a smooth continuous whole is obtained. In addition, it appears from this that the different material thicknesses are chosen such that the connection between the two tubes 1 and 6 is not the weakest link of the tube string.
Fig. 4 shows an end stop, which is indicated in its entirety by 17. This is also provided with a receptacle or run-in part 18, on the one hand bounded by a conical part 19 and on the other hand bounded by a screw thread 20. Contrary to the previous embodiment, this screw thread 20 20 does not have a stop, but an end plate 21 in which a bore 22 is provided for coupling with further connections. Naturally, this can also be done in a closed manner.
A corner piece is shown in Fig. 5. This is indicated in its entirety by 27 and consists of two sock parts which are in fluid communication with each other. 28 indicates the run-in or receiving part, which, on the one hand, opens into a conical part 29 and, on the other hand, into a screw thread 30 and 31, respectively. In this embodiment, screw thread can be of opposite pitch to screw thread 31. Coupling of two pipe parts takes place simply by moving those two pipe parts towards each other when receiving the coupling piece between them as shown in fig. 2. After that, a fixed connection between the pipe parts can be provided by rotation of the coupling piece 7. . It is of course also possible to rotate one of the tube parts, whereby the relevant coupling piece must be stopped. In this way a string of pipes can be coupled by rotating the pipe from one side and successively holding different coupling pieces.
In the latter case, it is of course also possible to make all threads, either on the left or on the right. In addition, it is no longer necessary to stop the coupling pieces when mounting a pipe string.
1014138 7
These and further changes are obvious to those skilled in the art after reading the above description and within the scope of the appended claims.
1. Sock to be applied to a tube comprising a sleeve-shaped part provided with a receptacle for that tube as well as an internal screw thread for engagement on that tube, characterized in that the length (b) of said receptacle corresponds at least to the length ( a) of that screw thread and that the inlet opening of said receptacle is provided with a conical tapering part (9; 19; 29), which conical tapering part extends substantially over the entire wall thickness of said sock.
Sock according to claim 1, comprising an end piece (17).
A connector (7; 27) comprising two interconnected socks according to any one of the preceding claims, wherein fluid communication is provided between said receptacles. 15
A coupling piece according to claim 3, comprising a stop (12) for said tube lying between said socks.
Coupler according to any of claims 3 or 4, wherein the two internal threaded parts (10; 11; 30; 31) are wound in opposite directions.
Sock / tube assembly comprising a sock, comprising a sleeve-shaped part provided with a receptacle (8; 18; 28) for that tube as well as an internal screw thread (10; 20; 30; 31) for engaging that tube, the length ( b) said receptacle corresponds at least to the length (a) of said screw thread and that the inlet opening of said receptacle is provided with a conically tapering part (9; 19; 29), as well as a tube, which tube is provided with a end (4) of smaller diameter than the diameter of the main part (2) of that tube which end is threaded, which can be engaged with the screw thread of that sock, the outer diameter of the part of the end not threaded substantially corresponding to the internal diameter of that receptacle.
Sock / tube assembly according to claim 6, wherein the transition (3) between the smaller diameter of said tube and the main diameter thereof substantially corresponds to the conical opening of said socket.
Coupling-tube assembly, comprising a coupling piece according to claim 3, 5 and a tube according to claim 5, wherein the external main diameter of said tube substantially corresponds to the external diameter of that coupling piece.
Coupling-tube assembly according to claim 8, wherein said conical angle of said opening is between 15 and 45 °. 10
Coupling-tube assembly according to either of claims 8 or 9, wherein said coupling piece is provided with gripping means (13) for tools.
11. A method for manufacturing a conduit strand, comprising providing at least three pipe parts interconnected with at least two coupling pieces according to claim 3, characterized in that a rotating force is imposed on the strand from one side to tighten the connection when retaining at least one of those coupling pieces. 1014138
NL1014138A 2000-01-20 2000-01-20 Sock and connector. NL1014138C2 (en)
NL1014138 2000-01-20
NL1014138A NL1014138C2 (en) 2000-01-20 2000-01-20 Sock and connector.
EP01906408A EP1248926B1 (en) 2000-01-20 2001-01-22 Socket and coupling piece
AT01906408T AT293775T (en) 2000-01-20 2001-01-22 Tube and clutch piece
AU3423601A AU3423601A (en) 2000-01-20 2001-01-22 Socket and coupling piece
DE60110202A DE60110202D1 (en) 2000-01-20 2001-01-22 Tube and clutch piece
US10/181,659 US20030132632A1 (en) 2000-01-20 2001-01-22 Socket and coupling piece
PCT/NL2001/000041 WO2001057425A1 (en) 2000-01-20 2001-01-22 Socket and coupling piece
NL1014138A1 NL1014138A1 (en) 2001-07-23
NL1014138C2 true NL1014138C2 (en) 2001-07-31
ID=19770639
US (1) US20030132632A1 (en)
EP (1) EP1248926B1 (en)
AT (1) AT293775T (en)
AU (1) AU3423601A (en)
DE (1) DE60110202D1 (en)
NL (1) NL1014138C2 (en)
WO (1) WO2001057425A1 (en)
NL1022255C2 (en) 2002-12-23 2004-06-24 Pleun Martin Van Der Wel Tube construction with screw threaded joint, especially for greenhouses, has specifically tapered male end part containing pressed groove for sealing ring
WO2008022357A1 (en) * 2006-08-13 2008-02-21 Eugene Fourie Pipe coupling
AT505072B1 (en) 2007-04-13 2009-02-15 Alwag Tunnelausbau Gmbh Method and device for securing an objected with an external thread
JP5780426B2 (en) * 2011-08-24 2015-09-16 日本管洗工業株式会社 joint structure and connection method
JP6518034B2 (en) * 2014-02-28 2019-05-22 株式会社神戸製鋼所 Fitting unit
DE102016107880A1 (en) * 2016-04-28 2017-11-02 Asm Automation Sensorik Messtechnik Gmbh screw
FR806400A (en) * 1936-05-15 1936-12-15 Ver Deutsche Metallwerke Ag A method to connect without welding of non-ferrous metal tubes
GB1008224A (en) * 1963-08-02 1965-10-27 Artlite Engineering Proprietar Method and means for connecting members in endwise relationship
US3489445A (en) * 1967-10-18 1970-01-13 Archer W Kammerer Jr Threaded sucker rod joint
US432733A (en) * 1890-07-22 Pipe-coupling
2000-01-20 NL NL1014138A patent/NL1014138C2/en not_active IP Right Cessation
2001-01-22 DE DE60110202A patent/DE60110202D1/en active Active
2001-01-22 US US10/181,659 patent/US20030132632A1/en not_active Abandoned
2001-01-22 AT AT01906408T patent/AT293775T/en not_active IP Right Cessation
2001-01-22 AU AU3423601A patent/AU3423601A/en active Pending
2001-01-22 EP EP01906408A patent/EP1248926B1/en active Active
2001-01-22 WO PCT/NL2001/000041 patent/WO2001057425A1/en active IP Right Grant
AU3423601A (en) 2001-08-14
EP1248926A1 (en) 2002-10-16
DE60110202D1 (en) 2005-05-25
WO2001057425A1 (en) 2001-08-09
NL1014138A1 (en) 2001-07-23
US20030132632A1 (en) 2003-07-17
EP1248926B1 (en) 2005-04-20
AT293775T (en) 2005-05-15
KR101479351B1 (en) 2015-01-05 Threaded component and device for connecting piping
RU2358180C2 (en) 2009-06-10 Threaded connection element and protective shell for it
WO2004042264A3 (en) 2005-03-03 Plastic-lined metal-encased tubing segment connector system
US20050236166A1 (en) 2005-10-27 Body with couplings
CA2725126A1 (en) 2006-09-08 Drill stem connection
DE4002494C2 (en) 1992-04-16
US4595219A (en) 1986-06-17 Gas tightly sealed joint in oil field tubular goods
AU2008316104B2 (en) 2011-03-03 Connection system for double-walled pipes
EP1751463B1 (en) 2010-01-27 A threaded pipe joint coupling with wire lock system
DE102008047544A1 (en) 2010-01-14 Two-piece composite fitting
FI115665B (en) 2005-06-15 A connecting piece
FR2505974A1 (en) 1982-11-19 Coupling and connection for plastic tube and method of mounting
2001-09-03 AD1B A search report has been drawn up