CN103928201B

CN103928201B - Medium-voltage Supporting Insulating Part

Info

Publication number: CN103928201B
Application number: CN201410005740.4A
Authority: CN
Inventors: J-F.托托里奇; D.科克; P.内温格; F.贝拉登戈
Original assignee: Schneider Electric SE
Current assignee: Schneider Electric SE
Priority date: 2013-01-11
Filing date: 2014-01-07
Publication date: 2017-04-12
Anticipated expiration: 2034-01-07
Also published as: CN103928201A; ES2547346T3; FR3001080A1; EP2755212B1; EP2755212A1; FR3001080B1

Abstract

A supporting insulating part comprises a main body (1), an end part region (2, 3) in which a recess (10) possessing a side opening (12) used for accommodating metal insertion members (5) is arranged. The insertion members are inserted after being manufactured, and are kept by screwing forces without needing to fasten the insertion members (5) in the main body (1). The manufacture is simplified, and the supporting insulating part is easy to recover when being exhausted. The medium-voltage supporting insulating part is used in an electrical device, and especially used in the devices possessing shells and used for supporting medium-voltage conductors.

Description

Middle hydraulic support insulating part

Technical field

The present invention relates to a kind of electric supporting insulating part, pressure is tieed up during such electric supporting insulating part is designed at least resist Hold the separation between two conductive components under different potentials.

Background technology

Conductive component can be electric conductor and belong to its housing of the air electrical equipment of confirmation, and they are by screw or class Like device is connected to the opposed end of supporting insulating part.Supporting insulating part is equipped with the female metal for wherein inserting screw Insert, and during these metal inserts are by being embedded in the insulating body for constituting supporting insulating part major part, by enclosing The main body is moulded around these inserts and be maintained.

Material for molding supporting insulating part main body is typically epoxy resin or other thermosetting polymers, although thermoplastic Property material has also been suggested, particularly in file WO2011/023721A.Nonetheless, it is Overmolded make it difficult to separate insert Enter part and main body, its possibility is easily recycled after supporting insulating part service life is completed so as to be compromised by.It is difficult to or nothing This shortcoming that method is reclaimed is because becoming even more obvious using thermosets.Another complaint with regard to existing design is They are very heavy.

The content of the invention

The purpose of the present invention is the manufacture process for simplifying these supporting insulating parts, first by eliminating Overmolded insertion Part, to allow the main body and insert separately fabricated, is followed by being easily recycled.The insert can be with simple but hold completely Long mode is assembled to main body.In certain embodiments, the insert even can be omitted entirely, and the supporting is exhausted Then edge part is only made up of main body.The light structures of main body are entirely possible with good electric insulation quality.

In general type, the present invention relates to the supporting insulating part of the above-mentioned type, including the main body by made by polymer, band Have along two relative end regions of the longitudinal direction of the main body, it include for accommodate the main body is fastened to it is described The device of the end of the device of part, the described device for accommodating includes that being provided with the master set up on the body side opens The recess of mouth, the body side connects the end regions, and is defined by dividing plate with holes, and the hole is used for by described Shank for the device of fastening and the jag for keeping the device for fastening.

As previously described, fastener generally includes screw or bolt.As the case may be, recess can accommodate nut, Screw head or the similar additional inserts with the similar form of nut, they are inserted by lateral openings.Thread handle is passed through Opening in dividing plate and jag is maintained in recess.The present invention still can be with the class with the shank for ending at jag It is used together like any other fastener of form.

For this general restriction can carry out multinomial improvement.Therefore it is recommended that main body is by thermoplastic polymer Make, so that it is easily recycled.

In the design of certain amount, supporting insulating part includes metal insert, and it is inserted in the recess and holds Fastener is received, while constituting the nose portion of described device.These metal inserts are inserted into, it is no Overmolded, and Therefore subsequently easily can separate with the main body of insulating part.By the protrusion for including entering in the corresponding aperture of main body external partition Thing, so that insert is maintained at into fixed position, they can be advantageously associated with it.

Additionally, insert can be threaded to be fastened to screw, or the die cavity for being provided with nut, fastener.

In general, main body preferably can be configured to rib structure, to make it lighten, without significantly reducing its machine Tool or dielectric strength, this will give the credit to the continuity of relief and rib, and this allows to prevent electric field and extend arc line；Additionally, The solution allows to avoid the thermoplastic of big thickness that cellular type defect is produced in the core of material.It can be with Including the longitudinal rib of connection end regions, principal spread direction of the rib parallel to main body.These ribs preferably radial direction.They can To be branched off with different distances from the central axis of main body, to prevent them from coalescing completely and accumulated material at center, can Moulding faults can be caused.The main body can also include the cross rib perpendicular to its principal spread direction, and its Main Function is to provide Dielectric separates, make when they exist longitudinal rib strengthen and extend thread cast-off.The main body is at least between the end regions Even longitudinally can be made up of with the grid of cross rib these completely, wherein the recess will apply slightly different structure.

Equally advantageous, the rib has constant and identical thickness, in order to manufacture the main body by moulding.

The end regions can include the continuous perisporium in addition in the main opening of recess.These are preferably provided with one Angle skew between individual end regions and another end regions, is also here the purpose for reducing electric arc risk.

The recess is defined by end wall.Advantageously, when there is provided insert, they are with these walls with constant gap Separate.

Description of the drawings

By figure below, it is explained in more detail to various aspects of the present invention：

- Fig. 1 shows the general view of supporting insulating part,

- Fig. 2 and 3 is two viewgraph of cross-section,

- Fig. 4 shows the view of one of insert, and

- Fig. 5 shows another embodiment without insert.

Specific embodiment

The supporting insulating part of the present invention is substantially made up of cylinder or cone shape main body 1, including two Hes of end regions 2 3 and by their separate zone lines 4.End regions 2 and 3 align with the central axis of main body 1, and it limits the vertical of main body 1 To bearing of trend.End regions 2 and 3 are designed to be fastened to conductive component by screw or bolt（It is not shown）, and have There is the insert 5 for being connected to the conductive component, such as in the diagram isolation is illustrated.They have the axle bush of general shape, special It is not radial configuration, to reduce electric field, and is included in three protrusions 6 on tabular surface 7.As seen in fig. 2, They also include for the close-fitting center internal thread hole 8 of thread handle for belonging to fastener, and nut die cavity 9, its It is arranged to relatively above-mentioned tabular surface 7, if it is desired, it is used to accommodate the nut for belonging to fastener.Insert 5 is placed in end region In the respective recess 10 in domain 2 and 3.Recess 10 is disposed through by outside lateral opening of the opening 12 towards main body 1, opening 12 Around each and a round perisporium 11 is also continued in end regions 2 and 3.Each is connected to side wall 11 by its end End wall 13 and by defining positioned at flat porous dividing plate 14 along its Longitudinal extending direction in the respective end of main body 1.Insert 5 Tabular surface 7 be placed in and be hollowed out being allowed by the porous barrier 14 of fastener thread handle with hole 15.Porous barrier 14 is also The hole for accommodating protrusion 6 is provided with, this allows to the appropriate location being maintained at insert 5 in its recess 10.Then, Insert 5 is concentric with end wall 13, and leaves uniform gap（In addition near opening 12）, it allows to obtain in insert 5 weeks Enclose also uniform electric field.Can there are any number of insert 5 and recess 10, this depends on the needs of the supporting to be completed. Here, end regions 2 include single central insert piece 5, and the other end region 3 includes two bias and relative insert 5.This species diversity explains why end regions 2 and 3 are here with their zone line 4 is connected with different radiuses What is taper, but this is not the essential feature of the present invention.

End wall 13 is connected to each other and is connected to perisporium 11 by internal rib 16.One of which extends at the center of main body 1 To larger end regions 3, and limit the inlet 17 for manufacturing main body 1.

The zone line 4 of main body 1 is only made up of rib grid, longitudinal rib 18 extend on the principal spread direction of main body 1 and End regions 2 and 3 are connected with each other, cross rib 19 is crossed as above-mentioned and regularly arranges；Alternately, if mechanical strength can be with Safely reduce, then can only have two or four rib.Longitudinal rib 18 is radial direction, but with can be seen in figure 3 Labyrinth：In fact, they are branched off from the central axis of main body 1 with different distances.It can be seen that four diagonal ribs 18a, 18b, 18c and 18d, four other ribs 18e, 18f, 18g and 18h, and aforementioned equal angle intervals at 45 °, but it Only in relative rib 18a and 18c top sets, but be held apart at other ribs 18b and 18d, and they therefore will not court To the center of the structure；Each in these ribs 18e to 18h branches into paired rib 18i and 18j at a right angle, with distance center Sizable distance is respectively parallel to one of one of lucky rib 18a and 18c and lucky rib 18b and 18d.This is radially but irregular Structure has on the whole more or less uniform thickness, it reduces the risk of polymer molding defect.Substantial amounts of rib combines it Good regular arrangement increased the intensity of main body 1.

Cross rib 19 is circular and continuous, and they create relief also around zone line 4.

Their Main Function is to increase under different potentials the quantity of the dielectric wall between insert and extends different electricity Thread cast-off between the lower conductor of position（leakage line）.

All of rib 18 has identical, constant thickness with 19.To prevent from being formed, that accidental arcs are taken is one last pre- Anti- measure can at one end between portion region 2 and the other end region 3 recess 10 opening 12 between angle skew in find out, It it is here 90 °, to apply longer spiral path on electric arc.

Some other embodiments will be illustrated by Fig. 5.Insert 5 is not intended to that main body 1 is fastened to including common The necessary device of the conductive component of screw 20.Screw 20 inserts recess 10, and its shank 21 passes through hole 15, and the head of screw 20 22 are maintained in recess 10.Used as variant, tapping screw can be used to form 15, the hole by initial continuous poriferous dividing plate 14 Body.Then identical arrangement is obtained.The height of recess 10 is selected to allow the screw 20 to insert.Kept by screw 20 and with The conductive component 23 held on porous barrier 14 is schematically shown.Other conductive components will be relative to supporting insulating part The other end region is positioned in an identical manner.

, by thermoplastic molded manufacture in special mould, melted material is axially towards end regions 2 and along footpath for main body 1 To being first poured in inlet 17 before outwardly, will not run into may bring any real obstacle of manufacturing defect Or narrow passage：On the contrary, it is contemplated that progressive, quite rapid and uniform foundry goods.Insert 5（When they exist）Lead to respectively Cross casting or machining is separately fabricated by metal, and be subsequently installed in main body 1 once main body is removed from mould.

Claims

1. it is a kind of to support insulating part, at least under medium voltate, two conductive components being separated under different potentials, including Main body (1), relative two end regions (2,3) on the Longitudinal extending direction of the main body by made by polymer, its bag The device for accommodating is included, the device for receiving accommodates the end of the device for fastening, the dress for fastening Put and the main body (1) is fastened to into the part, it is characterised in that the device for accommodating includes recess (10), and it sets It is equipped with the main opening (12) set up on the body side for connecting the end regions and is defined by porous barrier (14), The porous barrier (14) is for by the shank of the device for fastening and for keeping the dress for fastening The jag put.

2. supporting insulating part according to claim 1, it is characterised in that the main body (1) is made up of thermoplastic polymer.

3. supporting insulating part according to claim 1 and 2, it is characterised in that it includes metal insert (5), the gold Category insert (5) is inserted in recess (10), without the Overmolded main body, and accommodates the device for fastening.

4. supporting insulating part according to claim 3, it is characterised in that the insert is provided with and is pressed into the dividing plate Respective aperture in protrusion (6).

5. supporting insulating part according to claim 3, it is characterised in that the insert be provided with to be secured to it is described For the internal thread hole (8) of the screw of the device of fastening.

6. supporting insulating part according to claim 3, it is characterised in that the insert is provided with for described for tight Solid device nut die cavity (9).

7. supporting insulating part according to claim 1 and 2, it is characterised in that the main body includes the connection end region Domain and parallel to the longitudinal rib (18) of the main body principal spread direction.

8. supporting insulating part according to claim 7, it is characterised in that the longitudinal rib is radial direction.

9. supporting insulating part according to claim 8, it is characterised in that central axis of the longitudinal rib from the main body It is branched off with different distances.

10. supporting insulating part according to claim 1 and 2, it is characterised in that the main body is included perpendicular to the main body The cross rib (19) of principal spread direction.

11. supporting insulating parts according to claim 1 and 2, it is characterised in that it is completely by between the end regions Longitudinal direction and cross rib constitute.

12. supporting insulating parts according to claim 11, it is characterised in that the rib has identical and constant thickness.

13. supporting insulating parts according to claim 1 and 2, it is characterised in that the end regions (2,3) include except Continuous perisporium (11) outside the main opening (12) of the recess (10).

14. supporting insulating parts according to claim 1 and 2, it is characterised in that the main opening (12) of the recess with One of the end regions and another between, with regard to the main body principal spread direction angle skew.

15. supporting insulating parts according to claim 3, it is characterised in that the recess have separate perseverance with insert (5) The end wall (13) of fixed gap.