EP2099100B1 - Fiche de raccordement - Google Patents

Fiche de raccordement Download PDF

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Publication number
EP2099100B1
EP2099100B1 EP08003992A EP08003992A EP2099100B1 EP 2099100 B1 EP2099100 B1 EP 2099100B1 EP 08003992 A EP08003992 A EP 08003992A EP 08003992 A EP08003992 A EP 08003992A EP 2099100 B1 EP2099100 B1 EP 2099100B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
component
cable
connection
plug according
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.)
Not-in-force
Application number
EP08003992A
Other languages
German (de)
English (en)
Other versions
EP2099100A1 (fr
Inventor
Thomas Mangaard
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.)
Grundfos Management AS
Original Assignee
Grundfos Management AS
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 Grundfos Management AS filed Critical Grundfos Management AS
Priority to EP08003992A priority Critical patent/EP2099100B1/fr
Priority to DE502008000987T priority patent/DE502008000987D1/de
Priority to AT08003992T priority patent/ATE475209T1/de
Publication of EP2099100A1 publication Critical patent/EP2099100A1/fr
Application granted granted Critical
Publication of EP2099100B1 publication Critical patent/EP2099100B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/523—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases for use under water
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/504—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together

Definitions

  • the invention relates to a connector for connecting an electrical connection cable with a motor of a submersible pump.
  • Submersible pumps are state of the art and are used in numerous applications. They usually have a respect to the environment sealed motor housing, which merges into a suction port of the pump pump housing open or is connected to such and has a pressure port through which a hose is typically connectable.
  • an electrical connection cable is inserted into the motor housing and sealed from the environment.
  • the electrical connection cable is either factory-fixed and connected to permanent whereabouts or provided with a connector through which the connection cable is electrically and mechanically connected to the submersible pump and can also be changed by the user when needed, for example, if a longer connection cable is required or the cable is damaged. If a cable extension is required due to depth of dive, this can usually only be done by replacing the connection cable, as the use of an electrical extension cable under water is not practical.
  • DE-T-602005001035 discloses a plug according to the preamble of claim 1.
  • the connector according to the invention for connecting an electrical connection cable to the motor of a submersible pump has a holder for the mechanical connection of the plug to the motor of the submersible pump, through which the electrical connection cable is passed and an adjoining sleeve-shaped component with an inner ring seal for sealing the sleeve-shaped Component opposite the connecting cable and with an outer seal for sealing the sleeve-shaped member relative to the submersible pump-side connector receptacle.
  • the basic idea of the connector plug according to the invention is to design the sealing and holding functions in such a way that they are as independent as possible from each other and thus are guaranteed to be particularly reliable.
  • a holder is provided, with which the mechanical connection between the plug and connecting cable is made, typically in the form of a flange which is screwed to the housing of the motor of the submersible pump by means of threaded bolts.
  • the sealing function is ensured by seals on the sleeve-shaped component, wherein the inner ring seal is provided for sealing against the connection cable and the outer seal for sealing the sleeve-shaped component relative to the submersible pump-side connector receptacle.
  • the outer seal be arranged as a ring seal, for example in the form of an O-ring on the circumference of the sleeve-shaped component or possibly also be additionally formed by an elastic body, which is arranged at the end of the sleeve-shaped member and its sealing effect after incorporation into the motor-side connector receptacle Attachment of the holder of the connector plug is generated on the engine.
  • a ring seal for example in the form of an O-ring on the circumference of the sleeve-shaped component or possibly also be additionally formed by an elastic body, which is arranged at the end of the sleeve-shaped member and its sealing effect after incorporation into the motor-side connector receptacle Attachment of the holder of the connector plug is generated on the engine.
  • the inner ring seal is prestressed in the axial direction of the cable, so that a certain minimum contact pressure to the cable and thus the tightness of the plug can be ensured even in the event of loading.
  • the bias is according to the invention before attaching the plug to the submersible motor, so applied already when attaching the plug to the cable, so that this sealing function is independent of the attachment of the plug in the connector receptacle of the associated motor in each case.
  • the bias of the inner ring seal in the axial direction of the cable is carried out according to the invention over corresponding, quasi-rigid bearing surfaces, so that therefrom a deflection of the sealing forces in the direction of the cable.
  • the bias may possibly also be provided in the radial direction to the cable.
  • a Kunststoffverguss between the sleeve-shaped component and the connecting cable provided, ie a second sealing barrier, which acts independently of the first (inner ring seal).
  • This Kunststoffverguss also makes a mechanical connection between the cable and sleeve-shaped component ago, which increases the overall stability of the connector, in particular the composite of the individual components.
  • the connector according to the invention has a holder with a mounting flange, via which the holder can be firmly connected to the submersible motor housing mechanically and an adjoining hollow cylindrical section with a circumferential groove, wherein the arrangement is formed so that the sleeve-shaped member the hollow cylindrical portion includes and positively and / or non-positively fixed there.
  • holder with mounting flange and hollow cylindrical portion are integrally made of metal and the sleeve-shaped component also made of metal.
  • the positive connection can be achieved in that the sleeve-shaped component is crimped end on its end facing the hollow cylindrical portion and thus engages positively in the circumferential groove formed between the flange and the free end of the hollow cylindrical portion.
  • the flanging takes place in such a way that in addition to the positive connection and a frictional connection is formed, which determines the sleeve-shaped component not only form-fitting, but non-positively on the holder.
  • a frictional connection is formed, which determines the sleeve-shaped component not only form-fitting, but non-positively on the holder.
  • the frictional connection then arises due to the resilience of the inner seal on its own, but the biasing force can be set much more accurate in this process.
  • the aforementioned components are made of metal or at least of an electrically conductive material, then this additional non-positive fixing forms an electrically conductive connection between the sleeve-shaped member and the holder, so that can be done via a grounding, if, which is provided according to a development of the invention, connected to ground potential conductor of the connecting cable is conductively connected to the sleeve-shaped component.
  • the electrically conductive connection between the earth potential leading line of the connection cable and the sleeve-shaped component is advantageously carried out by a welding ode or solder joint on the inside of the sleeve-shaped component.
  • a welding ode or solder joint on the inside of the sleeve-shaped component.
  • the current-carrying lines of the cable are provided at their ends with plug contacts, which incorporated in an electrically insulating and elastic body at the pump end of the sleeve-shaped component are and which are aligned with corresponding mating contacts in the submersible connector, via which the electrical connection is made.
  • This insulating and elastic body is advantageously designed so that it additionally produces a sealing effect, both in the region of the individual electrical contacts and in the circumferential direction.
  • the elastic body is not only designed so that it engages in the sleeve-shaped component, but there also provided with a peripheral seal which seals between the body and the component.
  • a peripheral seal which seals between the body and the component.
  • the elastic body seals to the outside, d. H. towards the plug receptacle.
  • the length of the elastic body is dimensioned so that the elastic body is clamped axially when fastening the holder, whereby it radially expands and forms a seal against the connector receptacle in which it is incorporated.
  • end-side, leading to the contacts recesses are provided in the elastic body, which are tapered towards the cable, so that with appropriate training of the contacts or the contact guides in the bottom of the connector receptacle an additional seal in this area is achieved.
  • a bias to the inner ring seal is provided according to an embodiment of the invention to clamp this between two Axialauflagern, one of which is supported in the sleeve-shaped member and the other formed by the holder or at least supported by this.
  • the support within the sleeve-shaped component can be formed by a gradation in the inner wall, on which, for example, an annular disc rests as Axialauflager. It is then expediently initially applied during assembly of the plug, the bias on the inner ring seal and then attached the sleeve-shaped member to the holder, preferably by plastic deformation of the sleeve-shaped member in a groove of the holder.
  • the plug shown with reference to FIGS are for receiving in a correspondingly formed connector receptacle 12 of a submersible motor 11 (FIG. Fig. 6 ) of a submersible pump and provided.
  • a connection cable 1 in the form of four individual lines 2, 5 (current-carrying lines 2, grounding 5) is provided, which are introduced in a symmetrical arrangement relative to the longitudinal center axis 3 of the plug in this.
  • connector is a flat cable 4 is provided with lines 2 arranged therein and a separate line 5 for the ground potential.
  • the plugs shown differ so far only by the cable guide, with respect to their internal structure and the contact arrangement, however, they agree.
  • Each connector has a holder 6, which has an outer flange 7 with two recesses 8 and a central recess for cable entry.
  • a hollow cylindrical portion 9 connects to the repellent from the cable 1 side, which has a circumferential groove 10, the groove bottom relative to the rest of the circumference of the portion 9 springs back.
  • the holder 6 is made of metal and is used for mechanical attachment of the plug to the submersible motor 11. With built-in plug, the flange 7 engages over the connector receptacle 12, terminates flush with the housing contour on one side and is provided with two threaded screws which are guided through the recesses 8 , firmly connected to the housing of the submersible motor 11, thus establishes a firm mechanical connection with the motor.
  • a sleeve-shaped member 13 which is formed substantially cylindrical and with its outer contour the inner diameter of the upper part of the connector receptacle 12 corresponds.
  • the sleeve-shaped component 13 has on its outer side a groove 14, in which an O-ring 15 is guided, which forms an outer sealing ring in the installed position, which seals the sleeve-shaped member 13 against the inner wall of the connector receptacle 12.
  • the sleeve-shaped member 13 is thinned to the bracket-side end inside, so that inside a stepped shoulder 17 is formed, which serves to receive an annular disc 18 which forms an axial bearing for an inner ring seal 19, the other Axialauflager by the flange 7 for sleeve-shaped member 13 toward projecting hollow cylindrical portion 9 forms.
  • the hollow-cylindrical section 9 has the circumferential groove 10 projecting inwards and is surrounded by the section 16 of the sleeve-shaped component 13. In the region of the groove 10, the end of the sleeve-shaped component 13 is deformed inwardly, so that this engages positively, but also non-positively in the groove 10.
  • the inner ring seal 19 is subjected to force between the disc 18 and the hollow cylindrical portion 9 in the axial direction of the plug and thus biased in the axial direction of the cable. Since the seal 19 is made of rubber or a rubber-like material and a deflection of the material is possible neither in the axial nor in the radial outward direction, a radially inwardly acting force is generated by this bias, which the pressing force of the seal 19 to the cable 1 out increases and thus produces a high sealing effect.
  • the cable 1 is formed by a flat cable and a grounding line 5
  • the recesses in the flange 7 and the hollow cylindrical portion 9 are provided accordingly.
  • a potting body 22 is provided in this area, which forms a further sealing barrier between the inside of the sleeve-shaped component 13 and the cable 1, 4 or the lines 2, 5.
  • This potting body 22 is formed of plastic.
  • an elastic and insulating cylindrical body 23 is incorporated, which is supported on the end face of the sleeve-shaped member 13 in the axial direction and engages over a short portion 24 in this and there with a circumferential seal 25th is sealed against the sleeve-shaped member 13.
  • Its length is dimensioned so that it is pressed axially upon insertion of the plug into the connector receptacle 12 and screwing the flange 7 and thereby pressed radially against the inside of the connector receptacle 12 becomes.
  • the elastic body 23 forms a further seal between the sleeve-shaped member 13 and the connector receptacle 12.
  • This body 23 carries sleeve-shaped Contacts 26, which, like FIG. 1 shows are arranged distributed in 120 ° distance about the longitudinal axis 3 of the plug and is electrically connected to the ends of the three current-carrying lines 2.
  • the sleeve-shaped contacts 26 are aligned with conically widened to the end recesses 20 in the end face of the body 23.
  • Wie FIG. 6 illustrates, corresponding pin-shaped contacts 27 are provided in the connector receptacle 12 on the bottom side, which are provided for engagement and for electrical contacting in the contacts 26.
  • the formation is such that within the conically widened region of the recesses 20, a further seal against correspondingly tapered sections 28 in the connector receptacle 12 takes place.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Surgical Instruments (AREA)
  • Motor Or Generator Frames (AREA)

Claims (11)

  1. Fiche de raccordement pour le raccordement d'un câble de raccordement électrique (1, 4) à un moteur d'une pompe immergée, comprenant une attache (7) pour la liaison mécanique de la fiche au moteur immergé, à travers laquelle est guidé le câble de raccordement électrique (1, 4), un élément en forme de manchon (13) s'y raccordant et un joint annulaire intérieur (19) pour rendre étanche l'élément en forme de manchon (13) vis-à-vis du câble de raccordement (1, 4), caractérisée par un joint extérieur (15, 23) pour rendre étanche l'élément en forme de manchon (13) vis-à-vis du logement (12) de la fiche de raccordement côté moteur immergé.
  2. Fiche de raccordement selon la revendication 1, dans laquelle le joint annulaire intérieur (19) est précontraint, avant montage de la fiche sur le moteur immergé, dans la direction axiale du câble (1, 4).
  3. Fiche de raccordement selon l'une des revendications précédentes, dans laquelle une partie située entre l'élément en forme de manchon (13) et le câble de raccordement (1, 4) est moulée en matière plastique (22).
  4. Fiche de raccordement selon l'une des revendications précédentes, dans laquelle l'attache (6) présente une bride de fixation (7) ainsi qu'une partie cylindrique creuse (9) s'y raccordant et comportant une rainure périphérique (10), et dans laquelle l'élément en forme de manchon (13) entoure la partie cylindrique creuse (9) et, après application de la force de précontrainte sur le joint annulaire intérieur (19), y est fixé par liaison de forme et/ou de force.
  5. Fiche de raccordement selon l'une des revendications précédentes, dans laquelle l'élément en forme de manchon (13) présente une partie (16) en retrait par rapport au contour intérieur du logement (12), sur la face interne de laquelle est soudée la ligne (5) du câble électrique (1, 4) conduisant un potentiel de terre.
  6. Fiche de raccordement selon l'une des revendications précédentes, dans laquelle les fils conducteurs (2) du câble électrique (1, 4) sont munis en leurs extrémités de contacts à fiches (26) qui sont incorporés dans un corps (23) électriquement isolant et élastique en l'extrémité côté moteur de l'élément en forme de manchon (13).
  7. Fiche de raccordement selon l'une des revendications précédentes, dans laquelle le corps élastique (23) vient en prise dans l'élément en forme de manchon (13), où un joint périphérique (25) étant prévu entre le corps (23) et l'élément (13).
  8. Fiche de raccordement selon l'une des revendications précédentes, dans laquelle sont prévus, dans le corps élastique (23), des évidements (20) frontaux conduisant aux contacts (26), qui sont conçus pour s'effiler jusqu'aux contacts (26).
  9. Fiche de raccordement selon l'une des revendications précédentes, dans laquelle le joint annulaire intérieur (19) est maintenu entre un appui axial (18) reposant dans l'élément en forme de manchon (13) et un appui axial s'appuyant sur ou formé au niveau de l'attache (6).
  10. Fiche de raccordement selon l'une des revendications précédentes, dans laquelle l'élément en forme de manchon (13) reçoit le joint annulaire intérieur (19), le joint annulaire (19) précontraint se trouvant immobilisé, par déformation plastique de l'élément en forme de manchon (13), conjointement avec celui-ci sur l'attache (6).
  11. Fiche de raccordement selon l'une des revendications précédentes, dans laquelle le corps élastique (23) est conçu et disposé de façon à être précontraint par fixation de l'attache (6) sur le moteur immergé de manière étanche dans un logement (12) de la fiche de raccordement du moteur immergé.
EP08003992A 2008-03-04 2008-03-04 Fiche de raccordement Not-in-force EP2099100B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08003992A EP2099100B1 (fr) 2008-03-04 2008-03-04 Fiche de raccordement
DE502008000987T DE502008000987D1 (de) 2008-03-04 2008-03-04 Anschlussstecker
AT08003992T ATE475209T1 (de) 2008-03-04 2008-03-04 Anschlussstecker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08003992A EP2099100B1 (fr) 2008-03-04 2008-03-04 Fiche de raccordement

Publications (2)

Publication Number Publication Date
EP2099100A1 EP2099100A1 (fr) 2009-09-09
EP2099100B1 true EP2099100B1 (fr) 2010-07-21

Family

ID=39718301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08003992A Not-in-force EP2099100B1 (fr) 2008-03-04 2008-03-04 Fiche de raccordement

Country Status (3)

Country Link
EP (1) EP2099100B1 (fr)
AT (1) ATE475209T1 (fr)
DE (1) DE502008000987D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800004156A1 (it) * 2018-03-30 2019-09-30 Eris Anzanello Cavo di alimentazione elettrica per motori elettrici sommersi formati in una struttura di supporto per gruppi di pompaggio di liquidi, e procedimento di fabbricazione di tale cavo di alimentazione elettrica
CN109025925A (zh) * 2018-08-07 2018-12-18 中国石油天然气股份有限公司 一种数字式分注井下集成式控制器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736548A (en) * 1971-07-28 1973-05-29 R Double Electrical coupler
US7071588B1 (en) * 2004-05-20 2006-07-04 Yeomans Chicago Corporation Pump motor penetration assembly
FR2874462B1 (fr) * 2004-08-17 2008-07-25 Ksb Sas Soc Par Actions Simpli Traversee de paroi antideflagrante

Also Published As

Publication number Publication date
EP2099100A1 (fr) 2009-09-09
ATE475209T1 (de) 2010-08-15
DE502008000987D1 (de) 2010-09-02

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