ITBO20140109U1

ITBO20140109U1 - SYSTEM FOR DETECTING THE ELECTRIC HEAD EMITTED FROM A CONDUCTOR CABLE AND / OR FROM A TERMINAL CABLE

Info

Publication number: ITBO20140109U1
Application number: ITBO2014U000109U
Authority: IT
Original assignee: Green Seas Ventures Ltd
Priority date: 2014-11-17
Filing date: 2014-11-17
Publication date: 2016-05-17

Description

D E S C R I Z I O N E DESCRIPTION

dei Modello di Utilità avente per Titolo; of the Utility Model having a Title;

Sistema per Rilevare il Capo Elettrico Emesso da un Cavo Conduttore e/o da un Cavo Terminale" System for Detecting the Electric Head Emitted by a Conductor Cable and / or a Terminal Cable "

Campo della Invenzione Field of Invention

_La presente invenzione concerne un sistema per rilevare il capo elettrico emesso da un cavo conduttore e/o da un cavo terminale, _The present invention relates to a system for detecting the electrical end emitted by a conductor cable and / or a terminal cable,

_Più particolarmente, la presente invenzione concerne un sistema del suddetto tipo atto a poter svolgere varie funzioni, come per esempio atto a poter rilevare la presenza o la non presenza di tensione elettrica in un cavo conduttore e/o in un cavo terminale oggetto di rilevamento, oppure, atto a poter misurare il valore della tensione elettrica in un cavo conduttore e/o in un cavo terminale oggetto di rilevamento, oppure per altre analoghe funzioni. More particularly, the present invention relates to a system of the aforesaid type able to perform various functions, such as for example able to detect the presence or absence of electrical voltage in a conductor cable and / or in a terminal cable subject to detection, or, adapted to be able to measure the value of the electric voltage in a conductor cable and / or in a terminal cable subject to detection, or for other similar functions.

JPiù particolarmente, la presente invenzione concerne un sistema del suddetto tipo in cui detto rilevamento non subisce l’infiuenza di eventuali campi elettrici circostanti, come, per esempio, l'influenza dei campi elettrici generati da altri cavi conduttori disposti nelle vicinanze, con particolare applicazione nel settore afferente le linee e/o apparecchiature e/o cabine di bassa, media et alta tensione. More particularly, the present invention relates to a system of the aforesaid type in which said detection is not affected by any surrounding electric fields, such as, for example, the influence of the electric fields generated by other conducting cables arranged nearby, with particular application in the sector relating to low, medium and high voltage lines and / or equipment and / or substations.

Antefatti della Invenzione Background of the Invention

Gli attuali sistemi per rilevare il campo elettrico emesso da un cavo conduttore e/o da un cavo terminale si presentano laboriosi e/o costosi da realizzare e, inoltre, non consentono di ovviare l’influenza dei campi elettrici circostanti, generati per esempio da altri cavi conduttori disposti nelle vicinanze, con il rischio di fornire indicazioni errate circa il campo elettrico emesso dal cavo conduttore o cavo terminale oggetto di rilevamento. Current systems for detecting the electric field emitted by a conductor cable and / or a terminal cable are laborious and / or expensive to implement and, moreover, do not allow to overcome the influence of the surrounding electric fields, generated for example by others. conductor cables placed nearby, with the risk of providing incorrect indications about the electric field emitted by the conductor cable or terminal cable being sensed.

Jnoltre, detti attuali sistemi non consentono di ottenere delle misure del campo elettrico o di grandezze da esso derivate con adeguati livelli di accuratezza. Furthermore, said current systems do not allow to obtain measurements of the electric field or of quantities derived therefrom with adequate levels of accuracy.

Scopo della Invenzione Purpose of the Invention

Lo scopo della presente invenzione è quello di risolvere i sopra lamentati inconvenienti. The object of the present invention is to solve the aforementioned drawbacks.

L’invenzione, la quale è caratterizzata dalle rivendicazioni, risolve il problema di creare un sistema per rilevare il campo elettrico emesso da un cavo conduttore e/o da un cavo terminale, in cui detto sistema comprende un cavo conduttore che si estende lungo un proprio asse longitudinale ed un sensore di campo elettrico che si estende lungo un proprio asse, in cui detto sistema si caratterizza per il fatto che detto cavo conduttore comprende un primo segmento ed un secondo segmento, in cui rispetto ad uno sviluppo verticale detto primo segmento è definito inferiore e detto secondo segmento è definito superiore, in cui lungo detto primo segmento inferiore il cavo conduttore è dotato di una schermatura, in cui lungo detto secondo segmento superiore il cavo conduttore non è dotato di una schermatura, in cui detto sensore di tensione è posizionato a! lato del primo segmento inferiore del cavo conduttore, in cui detto sensore di tensione comprende un corpo scatolare schermante atto a schermare le linee di campo elettrico ed una apertura permeabile alle linee di campo elettrico; in cui detto sensore comprende una sonda di campo elettrico disposta all'interno di detto corpo scatolare schermante, in cui detta apertura del corpo scatolare è orientata verso il secondo segmento di conduttore superiore in maniera tale che le linee di campo elettrico emesse dal secondo segmento superiore di cavo conduttore passano attraverso detta apertura si chiudono su detta sonda di campo elettrico. The invention, which is characterized by the claims, solves the problem of creating a system for detecting the electric field emitted by a conducting cable and / or a terminal cable, in which said system comprises a conducting cable extending along its own longitudinal axis and an electric field sensor extending along its own axis, in which said system is characterized by the fact that said conductor cable comprises a first segment and a second segment, in which with respect to a vertical development said first segment is defined and said second segment is defined as upper, in which along said first lower segment the conductor cable is provided with a shield, in which along said second upper segment the conductor cable is not provided with a shield, in which said voltage sensor is positioned to! side of the first lower segment of the conductor cable, in which said voltage sensor comprises a shielding box-like body adapted to shield the electric field lines and an opening permeable to the electric field lines; wherein said sensor comprises an electric field probe arranged inside said shielding box-like body, wherein said opening of the box-like body is oriented towards the second upper conductor segment in such a way that the electric field lines emitted by the second upper segment of conducting cable pass through said opening and close on said electric field probe.

Breve Descrizione delle Figure dei Disegni Allegati Brief Description of the Figures in the Attached Drawings

-La descrizione che segue del sistema sensore capacitivo oggetto della presente invenzione, nelle varie forme di realizzazione pratiche, è data in via esemplificativa e non limitativa e, inoltre, con riferimento alle illustrazioni allegate in cui: -The following description of the capacitive sensor system object of the present invention, in the various practical embodiments, is given by way of non-limiting example and, moreover, with reference to the attached illustrations in which:

> Figura 1 illustra, in maniera schematica, una prima preferita forma di realizzazione del sistema oggetto della presente invenzione; Figure 1 schematically illustrates a first preferred embodiment of the system object of the present invention;

> Figura 2 illustra, in maniera schematica, una secondo forma di realizzazione per un sensore di campo elettrico. Figure 2 schematically illustrates a second embodiment for an electric field sensor.

Descrizione di una Preferita Forma dì Realizzazione Description of a Preferred Form of Realization

-Con riferimento alla figura 1, il sistema per rilevare il campo eletrico emesso da un cavo conduttore e/o da un cavo terminale comprende un cavo conduttore, indicato nel suo insieme con 100, il quale si estende lungo un proprio asse longitudinale Y.100 ed un sensore di campo elettrico, indicato nel suo insieme con 200, il quale si estende lungo un proprio asse Y.200, -With reference to Figure 1, the system for detecting the electric field emitted by a conductor cable and / or a terminal cable comprises a conductor cable, indicated as a whole with 100, which extends along its own longitudinal axis Y.100 and an electric field sensor, indicated as a whole with 200, which extends along its own axis Y.200,

Il cavo conduttore 100, in maniera esemplificativa, principalmente, comprende un conduttore 101, un guaina isolante 102, una guaina schermante 103, una guaina esterna 104. The conductor cable 100, by way of example, mainly comprises a conductor 101, an insulating sheath 102, a shielding sheath 103, an outer sheath 104.

In relazione con il sistema oggetto delia presente invenzione, per le ragioni che risulteranno in seguito, detto cavo conduttore 100 comprende un primo segmento assiale 110a, vedasi segmento AB della proiezione laterale, ed un secondo segmento assiale 110b, vedasi segmento BC della medesima proiezione laterale, in cui, in detta Figura 1, rispetto ad uno sviluppo verticale, detto primo segmento 110a è definito inferiore e detto secondo segmento 110b è definito superiore. In connection with the system object of the present invention, for the reasons that will appear later, said conducting cable 100 comprises a first axial segment 110a, see segment AB of the lateral projection, and a second axial segment 110b, see segment BC of the same lateral projection , in which, in said Figure 1, with respect to a vertical development, said first segment 110a is defined as lower and said second segment 110b is defined as upper.

_Con riferimento a detto primo segmento 110a inferiore, il conduttore 101 è dotato della guaina isolante 102, della guaina schermante 103, come pure della guaina esterna 104 e, pertanto, il campo elettrico emesso da questo primo segmento inferiore 110a non si propaga nell'ambiente essendo schermato dalla guaina schermante 103. With reference to said first lower segment 110a, the conductor 101 is equipped with the insulating sheath 102, with the shielding sheath 103, as well as with the outer sheath 104 and, therefore, the electric field emitted by this first lower segment 110a does not propagate into the environment being shielded by the shielding sheath 103.

Con riferimento al secondo segmento superiore 110b, il conduttore 101 è dotato della guaina isolante 102, non è dotato della guaina schermante 103, non è dotato della guaina esterna 104, siccome dette due guaine, 103 e 104, sono state asportate e, pertanto, il campo elettrico emesso da questo secondo segmento inferiore 110b si propaga nel' ambiente non essendo schermato dalla guaina schermante 103. With reference to the second upper segment 110b, the conductor 101 is equipped with the insulating sheath 102, it is not equipped with the shielding sheath 103, it is not equipped with the outer sheath 104, since said two sheaths, 103 and 104, have been removed and, therefore, the electric field emitted by this second lower segment 110b propagates in the environment as it is not shielded by the shielding sheath 103.

A lato del primo segmento inferiore 110a del cavo conduttore 100 è posizionato il sensore di campo elettrico 200, meglio descritto in seguito, il quale comprende un corpo scatolare schermante 210, conformato a guisa di tazza, teso a formare una camera schermata 212 dotata di una apertura 211, ed una sonda di campo elettrico 220 disposta all'interno di detto corpo scatolare schermante 210, To the side of the first lower segment 110a of the conductor cable 100 is positioned the electric field sensor 200, better described below, which comprises a shielding box-like body 210, shaped like a cup, aimed at forming a shielded chamber 212 equipped with a opening 211, and an electric field probe 220 arranged inside said shielding box body 210,

Con riferimento al corpo scatolare schermante 210 esso ha la sua apertura 211 orientata verso il secondo segmento superiore 110b del cavo conduttore 100, in maniera tale che le linee di campo elettrico emesse dal secondo segmento superiore 110b passando attraverso detta apertura 211 si vanno chiudere su detta sonda di campo elettrico 220. With reference to the shielding box-like body 210, it has its opening 211 oriented towards the second upper segment 110b of the conductor cable 100, in such a way that the electric field lines emitted by the second upper segment 110b passing through said opening 211 are closed on said electric field probe 220.

Più particolarmente, mediante questo sistema e/o mediante questa configurazione geometrica, il corpo scatolare schermante 210 provvede a schermare la sonda 220 rispetto alle linee di campo generate da altri cavi conduttori disposti nelle vicinanze e, inoltre, la apertura 211, posizionata a lato del primo segmento schermato 110a, come pure assai vicino al secondo segmento 110b, con la sua bocca di ingresso rivolta verso il medesimo segmento 110b, consente l'ingesso verso la sonda 220 soltanto alle linee di campo elettrico generate da detto secondo segmento 110b e, pertanto, detto sensore 200 sarà in grado di rilevare il campo elettrico solo nei confronti del cavo conduttore 100, senza subire l'influenza di eventuali campi elettrici disposti nelle vicinanze,, come per esempio i campi elettrici generati da altri conduttori disposti nelle vicinanze. More particularly, by means of this system and / or by means of this geometric configuration, the shielding box-like body 210 provides for shielding the probe 220 with respect to the field lines generated by other conducting cables arranged in the vicinity and, in addition, the opening 211, positioned at the side of the first shielded segment 110a, as well as very close to the second segment 110b, with its inlet facing towards the same segment 110b, allows the input towards the probe 220 only to the electric field lines generated by said second segment 110b and, therefore , said sensor 200 will be able to detect the electric field only towards the conductor cable 100, without being influenced by any electric fields disposed in the vicinity, such as for example the electric fields generated by other conductors disposed in the vicinity.

Con riferimento alla descrizione sopra significata, il cavo conduttore 100 potrebbe anche essere un cavo conduttore oppure un cavo terminale, senza uscire dai concetti inventivi della presente invenzione. With reference to the above description, the conductor cable 100 could also be a conductor cable or a terminal cable, without departing from the inventive concepts of the present invention.

Ancora con riferimento alla figura 1, detto sensore 200 è posizionato a lato del primo segmento schermato 110a, in una zona preferibilmente sottostante rispetto al livello L1 che definisce l'inizio del secondo segmento non schermato 110b del cavo conduttore 100 Again with reference to Figure 1, said sensor 200 is positioned to the side of the first shielded segment 110a, in an area preferably below the level L1 which defines the beginning of the second unshielded segment 110b of the conductor cable 100

Jnoìtre, sempre detto sensore 200 è posizionato distanziato di un determinato valore D rispetto al cavo conduttore 100 e/o rispetto agli eventuali elementi in tensione che compongono il cavo conduttore e/o il cavo terminale, in cui il valore di detta distanza D è preferibilmente pari alla distanza minima necessaria per non compromettere il livello di isolamento richiesto e consentire alle linee di campo elettrico emesse dal secondo segmento 110b di entrare nella camera interna 202 e chiudersi sulla sonda 220. Se necessario, il valore della distanza D può anche essere maggiore rispetto al valore minimo. Furthermore, said sensor 200 is also positioned at a distance of a determined value D with respect to the conductor cable 100 and / or with respect to any live elements that make up the conductor cable and / or the terminal cable, in which the value of said distance D is preferably equal to the minimum distance necessary in order not to compromise the level of insulation required and to allow the electric field lines emitted by the second segment 110b to enter the internal chamber 202 and close on the probe 220. If necessary, the value of the distance D can also be greater than to the minimum value.

Claims

CLAIMS 01) System for detecting the electric field emitted by a conducting cable and / or a terminal cable comprising a conducting cable (100) which extends along its own longitudinal axis (Y.100) and an electric field sensor (200) which is extends along its own axis (Y.200) characterized in that said conductor cable (100) comprises a first segment (110a) and a second segment (110b), in which with respect to a vertical development said first segment (110a) is defined lower and said second segment (110b) is defined upper, due to the fact that along said first lower segment (110a) the conductor cable (100) is provided with a shield (103); due to the fact that along said second upper segment (110b) the conductor cable (100) is not provided with a shield; due to the fact that said voltage sensor (200) is positioned to the side of the first lower segment (110a) of the conductor cable (100); due to the fact that said voltage sensor (200) comprises a shielding box-like body (210) adapted to shield the electric field lines and an opening (211) permeable to the electric field lines; due to the fact that said sensor (200) comprises an electric field probe (220) arranged inside (212) of said shielding box-like body (210), due to the fact that said opening (211) of the box-like body (210) is oriented towards the second segment (110b) of upper conductor, in such a way that the electric field lines emitted by the second upper segment (110b) of the conductor cable (100) pass through said opening (211) close on said probe (220) of electric field. 02) System according to claim 1, characterized in that said conductor cable (100) is a low / medium / high voltage terminal cable. 03) System according to claim 1 or 2, characterized in that said voltage sensor (200) is positioned at a level slightly below the lower starting level (L1) of the second segment (110b) of conductor cable (100). 04) System according to one of the preceding claims, characterized in that said sensor (200) is positioned at a distance of a determined value (D) with respect to the conductor cable (100) and / or with respect to the elements that make up the terminal, and for the the fact that the value of said distance (D) is equal to the minimum distance required in order not to compromise the required insulation level. 05) System according to one of the preceding claims, characterized in that said opening (211) lies in a plane substantially normal with respect to the axis (Y.200) of the sensor (200) and in that the axis (Y. 200) of the sensor and the axis (Y.100) of the conductor (100) define each other a first point of incidence (P1) positioned axially along the second upper segment (110b) of the conductor cable (100). 06) System according to claim 5, characterized in that said first intersection point (P1) is positioned in a midpoint with respect to the axial extension (Y.100) of the second unshielded upper segment (110b) of the conductor cable (100 ). 07) System according to one of the preceding claims, characterized in that the axis (Y.200) of the sensor (200) and the axis (Y.100) of the conductor cable define between them an impact point (P1) which configure an underlying acute angle (a) of approximately 30 degrees. 08) System according to one of the preceding claims, characterized in that the axis (Y.200) of the sensor (200) and the axis (Y.100) of the conductor cable define between them an impact point (P1) which configure an underlying acute angle (a) of not less than 10 degrees. 09) System according to one of the preceding claims, characterized in that the axis (Y.200) of the sensor (200) and the axis (Y.100) of the conductor cable define between them an impact point (P1) which configure an underlying acute angle (a) not greater than 65 degrees. 10) System according to one of the preceding claims, characterized in that the projection (P.210dx) of the lower side (210dx) of the shielded box body (210) defines with the axis (Y.100) of the conductor cable (100) a second intersection point (P2) and due to the fact that said second point (P2) is preferably positioned near the lower end of the second unshielded segment (110b) of conductor cable (100) 11) System according to one of the preceding claims, characterized in that the projection (P.210sx) of the lower side (210sx) of the shielded box body (210) defines with the axis (Y.100) of the conductor cable (100) a third intersection point (P3) and due to the fact that said third point (P3) is preferably positioned near the upper end of the second unshielded segment (110b) of conductor cable (100). 12) System according to one of the preceding claims, characterized in that it further comprises first adjusting means (300) able to vary and set the orientation of the axis (Y.200) of the sensor (200) in order to modify and set the point of incidence (P2) between the sensor axis (Y.200) and the axis (Y.100) of the conductor cable (100). 13} System according to claim 12, characterized in that said first register means (300) comprise a support bracket (301) which, in proximity to one of its first ends, supports the sensor (200) in an oscillating manner. 14) System according to one of the preceding claims, characterized in that it further comprises second register means (400) adapted to be able to vary and set the value of the transverse distance (D) between the sensor (200) and the conductor cable (100) . 15) System according to claim 14, characterized in that said second register means (400) comprise a support bracket (301) which, in proximity to a second end thereof, is coupled in an oscillating manner to a wing (401) of a fixing bracket (402) fixed to the first segment (110a) of the conductor cable (100). 16) System according to one of claims 1 to 15, characterized in that said sensor (200) comprises: a shielding box-like body (210) made of conductive material and equipped with an opening (211); an electric field probe (220) positioned within an internal chamber (212) configured by means of said shielding box-like body (210); a mass (214) of dielectric material intended to form a support body (214) which incorporates said shielding box body (210) and said electric field probe (220); a cable (230) connected to said probe (220) and protruding with respect to said mass of dielectric material (214) and intended to carry the signal detected by said probe (220) outside the same mass (214). 17) System according to claim 16, characterized in that said shielding box-like body (210) is connected to earth. 18) System according to one of claims 1 to 15, characterized in that said sensor (500) comprises: a first box-like body made of plastic material permeable to the electric field lines and equipped with an opening (511); a layer of shielding material (520) applied to the internal walls of said first box-like body (510) adapted to shield the electric field lines; an electric field probe (530) positioned within an internal chamber (512) configured by means of a first box-like body (510) and by means of said layer (520); a cover (540) made of plastic material permeable to the electric field lines adapted to cover said opening (511); a cable (550) connected to said probe (530) and protruding with respect to said sensor (500) intended to carry the detected signal outside the same sensor (500). 19) System according to claim 18, characterized in that said layer of shielding material (520) is connected to earth. · 20) System according to one of the preceding claims, characterized in that said shielding box-like body (210/520) equipped with an opening (211/511) is shaped like a cup having a hollow circular cross-section. 21) System according to one of claims 1 to 19, characterized in that said shielding box-like body (210/520) equipped with an opening (211/511) is shaped like a tray having a hollow square and / or rectangular cross section. 22) System according to the preceding claims and substantially as described and illustrated in the figures of the attached drawings and for the purposes specified above.