EP1588785A2 - Element de tube hélicoidal - Google Patents

Element de tube hélicoidal Download PDF

Info

Publication number: EP1588785A2
Authority: EP; European Patent Office
Prior art keywords: coiled; flange; tubular body; tube; pipe
Prior art date: 2004-04-20
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.): Granted

Application number

EP05008464A

Other languages

German (de)

English (en)

Other versions

EP1588785B1 (fr

EP1588785A3 (fr

Inventor

Norbert Heinzle

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.)

Erne Fittings GmbH

Original Assignee

Erne Fittings GmbH

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.)

2004-04-20

Filing date

2005-04-19

Publication date

2005-10-26

2005-04-19 Application filed by Erne Fittings GmbH filed Critical Erne Fittings GmbH

2005-10-26 Publication of EP1588785A2 publication Critical patent/EP1588785A2/fr

2005-11-02 Publication of EP1588785A3 publication Critical patent/EP1588785A3/fr

2010-03-17 Application granted granted Critical

2010-03-17 Publication of EP1588785B1 publication Critical patent/EP1588785B1/fr

2025-04-19 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
- F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
- F04C2/1075—Construction of the stationary member
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings

Definitions

the invention relates to a coiled tube element according to the preamble of the claim 1.
a stator is required, on the one hand coiled more often and accordingly designed geometrically complex
end-side connections which is a reliable Tightness in pump operation as well as easy mountability for replacement have wear.
stators for progressing cavity pumps the end with a screwed or welded ring, which has a flange-like pad are defined.
stators are still on the inside an inner lining of rubber or other elastomer provided, the without interruption and sealing pulled up to the pad.
the coiled tube element which conventionally mainly of a Pipe by forging from the outside to an inside Hammered or pressed form has neither straight nor circular end contours.
annular connection elements For welding or attachment of annular connection elements to Receipt of flange-like pads are then regularly transformations of Provide end areas including cutting shaping operations, before here ring parts can be welded or screwed on.
connection area of such rings also backup and strength problems at the expense of durability and with the need for special quality controls.
the object of the invention is accordingly, such a coiled tube element or its manufacturing process easier, cheaper, with a lower Manufacturing effort and with a directly representing quality and To create strength.
a coiled tube element according to the preamble of Claim 1 designed so that the metallic tubular body to form a or each pad an integrally formed as a flat flange pipe end having.
a method for producing a provided coiled tubular element in which a coiled tubular body formed integrally with an output tube and thereby at least one end to a flange is formed.
the corresponding manufacturing process is in the field of non-cutting hot and Perform cold forming, usually in the manufacture of the equipment with regard to the spatial arrangement and the processing sequence are summarized.
Cutting processes that are only in the sense of more precise External dimensions and planer or cylindrical surfaces by way of cutting Deformation to be worked out, can be at the end of the processing to a move such pipe element.
Such a post is in Meaning of a precise fit of such a tubular element at its respective
It is also of interest for instance as a stator for progressing cavity pumps with an inner layer of elastomeric material, in particular rubber, is lined.
the elastic layer would then be able to certain Deficiencies in dimensional accuracy to bridge, but this is at high standards to a reliable seal with circumferentially uniform sealing forces usually not be provided.
such a tubular element with a coiled Aufweitdom manufacture according to a method as described in EP 0 344 570 B1.
One Such method or tool creates a coiled tubing in a direct operation, in which the basic shape of the helix approximately in terms of pipe cross-section and Wendelste Trent be given with the shape of the expansion dome can.
a tube spiral production with the help of a Friedweitdoms is not in all, but in many cases performed as hot working, while the Shaping the pipe end in general as cold forming and thus under Waiver of previous warming up of the workpiece can be done.
the designated in the drawing as a whole with 1 tube element has a load-bearing Tubular body 2 made of metal, preferably steel, and an inner lining 3 of an elastomeric material, preferably rubber, wherein in any case the inner lining has a substantially uniform wall thickness and with an internal Surface 4 determines a non-cylindrical inner shape of the pipe, the important for the function of the tubular element 1 as a stator for eccentric screw pumps is.
the basic shape of a so delimited interior 5 can be made of an oval inner cross-section out, with the oval geometrically made up of two parallel ones Side sections, formed by mutually opposite semicircles is. According to a given helical shape, this oval is in longitudinal extension of the tubular element about a central axis 6 advances uniformly - helically - twisted, so that in the illustrated longitudinal section in the Cutting plane recognizable to each other approximated areas and further from each other removed areas of the inner contour 4 result. Played in the drawing Lines 7,8,9 are not as edges, but only as direction indicators (sanding marks) to understand the direction of rotation of the imaginary generating oval.
the basic form with the double-flighted helix is the most common in stators of progressing cavity pumps, but there are also three- or multi-start helix possible.
the end of the tube body 2 is integrally in a flange-shaped molded pipe end 10 over, which is aligned perpendicular to the longitudinal axis 6.
the flange has a defined by cutting machining peripheral edge 11th on, which is circular or cylindrical concentric with the axis 6.
the flange in the drawing is only slightly above the tubular body overhanging, if you put it in the sketched cutting plane of the Longitudinal section considered, in which the tubular body is approximately maximum in the direction of Drawing plane extends.
the flange-like tube end 10 without breakage and jointless emerges from the tubular body 2, in particular so on threaded cuts or welds can do without, not only in the sense of a simplified Production, but also a robust and uniform embodiment with good strength characteristics is beneficial. It is obviously unnecessary between pipe body 2 and pipe end 10 to an adapting intermediate area create as it is regularly required when placing separate parts.
the Tube end 10 is in its flange rather directly from the non-cylindrical Spiral shape over with a very short transition area 12.
the tubular body 2 is preferably formed by forming a cylindrical tube formed with the help of an expanding mandrel, which provides a rapid and precise molding process offers. While such a molding process using a dilation dome usually performed as hot forming, the subsequent forming the pipe end to the flange shape generally in the "cold" state, which saves not only the warm-up of the workpiece, but also the handling facilitated.
the metallic tubular body 2 together with the tube end 10 is completed before the Inner lining 3 is applied. This completion closes then also the Machining for the cylindrical rim 11 and can also normally a post-processing of an end face 13 of the flange with machined Include means, if this not already in the forming, in one Gesenk, has received a sufficiently smooth and precise surface.
the inner lining 3 is subsequently produced in a casting or injection mold. This then covers the tubular body 2 inside continuous and seamless and is also still end detox in one piece to the edge 11 of the pipe end 10 continues.
the inner lining 3 forms the particular for completion and sealing tasks important end face 14 and is at the transition of this end face 14 to the inner contour 4 provided with an edge 15, which is the boundary line between the coiled Inner shape of the tubular element 1 and the flat end face 14 consistently reproduced while the underlying supporting and supporting metallic Tube body 2 in the transition region 12 reveals fillets.
the coiled tube element 1 which is shown with only one end region, extends as a stator for eccentric screw pumps, for example via the Length of 250 mm and is usually on the other side with a corresponding one Pipe end provided, so that it easily interchangeable with the help of Clamping screws or clamping claws clamped in a motor-pump unit can be.
a stator for eccentric screw pumps, for example via the Length of 250 mm and is usually on the other side with a corresponding one Pipe end provided, so that it easily interchangeable with the help of Clamping screws or clamping claws clamped in a motor-pump unit can be.
a stator which is a circular cylindrical Cross-section, but coiled around an axis, the installation coincides with the axis 6 of the stator, wherein the circular cross section of the Rotor sections in one and the other of the two end portions the oval inner cross-section of the stator snuggles.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Rotary Pumps (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Reciprocating Pumps (AREA)
Ultra Sonic Daignosis Equipment (AREA)
Endoscopes (AREA)
External Artificial Organs (AREA)

EP05008464A 2004-04-20 2005-04-19 Element de tube hélicoidal Expired - Lifetime EP1588785B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE102004019698A DE102004019698B4 (de)	2004-04-20	2004-04-20	Gewendeltes Rohrelement
DE102004019698		2004-04-20

Publications (3)

Publication Number	Publication Date
EP1588785A2 true EP1588785A2 (fr)	2005-10-26
EP1588785A3 EP1588785A3 (fr)	2005-11-02
EP1588785B1 EP1588785B1 (fr)	2010-03-17

Family

ID=34935347

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP05008464A Expired - Lifetime EP1588785B1 (fr)	2004-04-20	2005-04-19	Element de tube hélicoidal

Country Status (3)

Country	Link
EP (1)	EP1588785B1 (fr)
AT (1)	ATE461001T1 (fr)
DE (2)	DE102004019698B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2016057294A1 (fr) *	2014-10-07	2016-04-14	Access Business Group International Llc	Dispositif pour formulation personnelle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102014116327A1 (de)	2014-11-10	2016-05-12	Netzsch Pumpen & Systeme Gmbh	Verfahren zur Herstellung eines gewendelten Stators und Vorrichtung zur Herstellung eines gewendelten Stators

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0344570B1 (fr)	1988-05-30	1992-12-09	SIEKMANN FITTINGS GMBH & CO. KG	Procédé et dispositif de fabrication d'un tube en forme d'hélice
EP0925892A1 (fr)	1997-12-23	1999-06-30	BUG BETRIEBSANLAGEN UND GRUNDBESITZ GmbH	Procédé et malaxeur pour fabriquer des masses de mortier en couleur
DE19950257A1 (de)	1999-10-18	2001-04-26	Wilhelm Kaechele Gmbh Elastome	Exzenterschneckenpumpe mit vollausgekleidetem Stator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1653899A1 (de) *	1967-08-12	1971-09-30	Seeberger Kg Maschinen Und Ger	Schneckenpumpe
DE2713468C3 (de) *	1977-03-26	1982-09-02	Allweiler Ag, 7760 Radolfzell	Stator für Exzenterschneckenpumpen
DE4121717C2 (de) *	1991-06-07	1995-01-26	Allweiler Ag	Schneckenpumpe, insbesondere Exzenterschneckenpumpe
DE19602137A1 (de) *	1995-01-23	1996-08-08	Andrej Nikolaevic Frolov	Verfahren und Vorrichtungen zur Herstellung von Rohren mit profilierter Wand (gaufrierten Rohren)
DE19804259A1 (de) *	1998-02-04	1999-08-12	Artemis Kautschuk Kunststoff	Elastomerstator für Exzenterschneckenpumpen

2004
- 2004-04-20 DE DE102004019698A patent/DE102004019698B4/de not_active Expired - Fee Related
2005
- 2005-04-19 EP EP05008464A patent/EP1588785B1/fr not_active Expired - Lifetime
- 2005-04-19 AT AT05008464T patent/ATE461001T1/de not_active IP Right Cessation
- 2005-04-19 DE DE502005009219T patent/DE502005009219D1/de not_active Expired - Lifetime

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0344570B1 (fr)	1988-05-30	1992-12-09	SIEKMANN FITTINGS GMBH & CO. KG	Procédé et dispositif de fabrication d'un tube en forme d'hélice
EP0925892A1 (fr)	1997-12-23	1999-06-30	BUG BETRIEBSANLAGEN UND GRUNDBESITZ GmbH	Procédé et malaxeur pour fabriquer des masses de mortier en couleur
DE19950257A1 (de)	1999-10-18	2001-04-26	Wilhelm Kaechele Gmbh Elastome	Exzenterschneckenpumpe mit vollausgekleidetem Stator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2016057294A1 (fr) *	2014-10-07	2016-04-14	Access Business Group International Llc	Dispositif pour formulation personnelle
CN106999881A (zh) *	2014-10-07	2017-08-01	捷通国际有限公司	个人配制装置

Also Published As

Publication number	Publication date
EP1588785B1 (fr)	2010-03-17
DE102004019698A1 (de)	2005-11-24
DE502005009219D1 (de)	2010-04-29
DE102004019698B4 (de)	2010-06-10
EP1588785A3 (fr)	2005-11-02
ATE461001T1 (de)	2010-04-15

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