BE635337A - Screen head and its manufacturing process - Google Patents

Description

       

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  SCREEN HEAD AND ITS PROCESS
MANUFACTURING.
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 the present invention relates to an e of an electrostatic screen, applied to an insulating sheath surrounding at least one conductor which can be at a high en4ion. Its goal is an eo head for high pension, particularly short and has to be achieved.



  The manufacturing process according to the invention is characterized in that the end of the electrostatic screen is stripped at least over a length of the order of magnitude of the diameter of the cable, which is ent'i. , on the electrostatic screen stripped a piece of ev pipe consisting of

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 a weakly conductive shadow eleqtrioitê that, 4 close *, the narrow end of this end of twy to the center
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 the electrostatic screen using a tottib $ 8t # and bzz fills this flared end of pipe with an insulating mass
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 hard lesa ouie.



  The invention is explained cid ... O8 with respect to an example of an embodiment shown in. attached drawing. The drawing shows a perspective view, partial-
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 ment in section of a cable head equipped with uni 4ttè 4190 * b according to the invention.



  In this figure a cable 1 totleônziïtài by Ut conductor 2, an insulating sheath 3, a éorôh elec'troai <4, an auxiliary conductor 5 for the capacitive stuffing and
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 a protective sheath 6. The end of the clamp 2 block connected to the connection terminal 7 of a spark gap using a screw contact 9, released at tt * ttVer * uine opening closed by a cover 10 .

   On the bare end
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 of the electrostatic screen 4 we put on a flared t4yatt drink in the shape of a trumpet bell. The inside diameter of this piece of pipe 11 is slightly larger than the diameter of the aortic electroethical screen * the casting of a durciaaabie 12 nest egg, it is easy to eliminate all the air bubbles which could remain trapped in the bottom of the pavilion, if we do not expressly take care by a special measure * Immediately
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 after casting,

   the narrow end of the tU18u bèut 11 Obt applied by crimping firmly against ll'ora 41.dtr- static 4 to ensure electrical contact between this

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 screen and the low elastomeric elastomeric mass of which the end of the pipe 11 is made. For this crimping one can use, for example, an auxiliary conducting wire 5 connected to the mass of the cable. the space between the end of the cable and the inner walls of the insulator 8 is filled with a suitable insulating mass.


    

Claims (1)

SUMMARY 1. Method for manufacturing a head of an electrostatic screen applied to an insulating sheath surrounding at least one conductor capable of being brought to a high voltage, characterized in that the static electron screen is stripped at least over a length of the order of magnitude of the diameter of the sheath, which one threads on the stripped electrostatic screen a piece of flared pipe, constituted by an elastomer weakly conductive of electricity, that one presses the narrow end of the end of pipe against the electrostatic screen using a crimp and that the end of the flared pipe is filled with a hardenable insulating mass 2. Method of manufacturing a screen head, according to 1, characterized in that the head of aeorah is capped with an insulator and that the free space between the latter and the interior walls of the insulator is filled by a suitable insulating mass, 3. Screen head manufactured according to 1 or 2. 4. Screen head according to 3, characterized in that the flared end of pipe has a minimum internal diameter <Desc / Clms Page number 4> a little larger than the diameter of the electrostatic screen on which it is applied. 5. Screen head according to 3 or 4, characterized in that it is applied to the end of a cable and that the end of the flared pipe is crimped onto the electrostatic screen of the cable by means of a conductive wire connected to ground.