ELECTRIC CABLE WITH STRAIN SENSOR AND MONITORING SYSTEM AND METHOD FOR DETECTING STRAIN IN AT LEAST ONE ELECTRIC CABLE

An electric cable includes a strain sensor longitudinally extending along the cable and including a strain optical fibre arranged within a bending neutral region surrounding and including a bending neutral longitudinal axis of the electric cable, and at least two longitudinal structural elements, at least one of the at least two longitudinal structural elements being a core including an electrical conductor, wherein the strain sensor is embedded in a strain-transferring filler mechanically coupling at least one of the at least two longitudinal structural elements with the strain sensor. With the disclosed cable construction, the strain experienced by the at least one of the at least two longitudinal structural elements is transferred to the strain sensor at least in a strained condition. In the preferred embodiments, the electric cable is a heavy-duty cable. 137-. (canceled)38. An electric cable comprising:a strain sensor longitudinally extending along the cable and comprising a strain optical fibre arranged within a bending neutral region surrounding and comprising a bending neutral longitudinal axis of the electric cable, and at least two longitudinal structural elements, at least one of the at least two longitudinal structural elements being a core comprising an electrical conductor,wherein the strain sensor is embedded in a strain-transferring filler mechanically coupling at least one of the at least two longitudinal structural elements with the strain sensor at least in a strained condition.39. The cable of claim 38 , wherein the strain-transferring filler comprises an elastomer with Young's modulus of 0.01 to 0.7 GPa.40. The cable of claim 38 , wherein the strain-transferring filler is based on a thermosetting elastomer.41. The cable of claim 38 , wherein the strain sensor comprises a protective sheath surrounding the strain optical fibre and wherein the strain-transferring filler surrounds and is congruent with the protective sheath.42. The cable of claim 41 ...

Monitoring method and system for detecting the torsion along a cable provided with identification tags

A method for monitoring the torsion of a cable includes the steps of: providing a cable having an outer surface and extending along a longitudinal direction, the cable being provided with at least one identification tag, preferably an RFID tag, arranged in a tag angular position in a cross-sectional plane taken transverse to the longitudinal direction, the at least one tag storing a tag identification code and being capable of transmitting a tag electromagnetic signal; interrogating the at least one identification tag to receive the tag electromagnetic signal, and detecting the tag electromagnetic signal, wherein the step of detecting the tag electromagnetic signal includes the step of reading the tag identification code and determining the tag angular position of the at least one identification tag. A torsion monitoring system of a cable includes at least one identification tag.

METHOD AND A MACHINE FOR CUTTING PAPER LOGS

Method for cutting of logs of paper material, wherein the cut is performed by means of two circular blades (, lib) rotating about respective axes (x-x) and acting in a cutting plane (T) orthogonal to a plane (P) in which lies the longitudinal axis (y-y) of one or more logs () subjected to cutting, and wherein, during execution of the cut, is: DL Подробнее

DRAGGING ELEMENT FOR DRAGGING WEB MATERIALS

Dragging element for dragging web materials comprising at least a portion with at least one through cut () apt to engage a part () of a web material () intended to be moved in a direction imposed by the same dragging element that follows a predetermined operating path, said at least one cut () is helicoidal. 1. A dragging element for dragging web materials , the dragging element comprising:a dragging element structure, at least a portion of said dragging element structure comprising at least one through cut for engaging a part of a web material intended to be moved in a direction imposed by the dragging element structure that follows a predetermined operating path, said at least one cut being helicoidal.2. A dragging element according to claim 1 , wherein a cross section of the dragging element structure is solid.3. A dragging element according to claim 1 , wherein a cross section of said dragging element structure is bioconvex.4. A dragging element according to claim 1 , wherein a cross section of said dragging element structure is star shaped.5. A dragging element according to claim 1 , wherein a cross section of said dragging element structure is circular.6. A dragging element according to claim 1 , wherein said dragging element structure is made of thermoplastic polyurethane.7. A dragging element according to claim 1 , wherein said dragging element structure comprises plurality of twisted strands.8. A dragging element according to claim 1 , wherein said dragging element structure serves a plurality of machines which constitute a plant for paper converting.9. A dragging element according to claim 1 , wherein a cross section of the dragging element structure is not hollow. The present invention relates to a dragging element for dragging web materials.It is known that, in certain industrial operations, a weblike material must be properly guided along a path crossing a plurality of operative stations in each o which the same material is subject to a specific step ...

RIGID AND FLEXIBLE DOCTOR BLADE HOLDER AND SYSTEM COMPRISING A CYLINDER AND A DOCTOR BLADE HOLDER

There is described a doctor blade holder () for a doctor blade () adapted to co-act with a cylindrical surface (S) of a rotating cylinder (), comprising: 2. Doctor blade holder according to claim 1 , wherein the thrust member comprises at least one chamber inflatable with a pressurized fluid.3. Doctor blade holder according to claim 1 , wherein the thrust member comprises at least one elastic body claim 1 , preferably a spring claim 1 , more preferably a plurality of springs distributed along the beam.4. Doctor blade holder according to claim 1 , wherein each finger can be mounted on and removed from said beam independently from the others.5. Doctor blade holder according to claim 1 , comprising a counter-blade claim 1 , on which said fingers act claim 1 , the counter-blade being arranged between the fingers and the blade claim 1 , to press on the blade housed in the housing seat for the doctor blade.635. Doctor blade holder according to claim 1 , wherein each finger comprises a hinge pin and wherein for each finger the beam comprises an openable support claim 1 , in which the hinge pin of the respective finger () is rotatingly engaged.7. Doctor blade holder according to claim 1 , wherein each finger comprises a first portion claim 1 , defining the housing seat for the doctor blade claim 1 , and a second portion claim 1 , co-acting with said thrust member claim 1 , the rotation axis being arranged between the first portion and the second portion.8. Doctor blade holder according to claim 7 , wherein each hinge pin is arranged between the first portion and the second portion of the respective finger.9. Doctor blade holder according to claim 1 , wherein each finger is hinged to the beam at a proximal end of the finger; wherein the housing seat for the blade is positioned between the first end and a second distal end of the fingers claim 1 , opposite the rotation axis; and wherein the thrust member is positioned between the first ends and the second ends of the fingers. ...

Method and system for transmitting power in link

(57)【要約】 （修正有） 【課題】電力伝送リンクの状態及び関連の電流定格能力 制御の分析方法及び装置に関する。 【解決手段】電流導通リンクに電力の輸送方法で、リン クに所定値の電流の供給段階、リンクを所定数のセグメ ントの分割段階、第一の所定予知モデルをセグメントの 各々に関係づける段階、複数の温度検知器の少なくとも ２つがセグメントの各々に作動可能に係合し電流値で影 響される温度検知器をリンクに沿って敷設する段階、第 一回目に検知器から各検知器値の受信段階、セグメント に関係づけられた第一予知モデルに従って、第二回目に セグメントの１つで予想作動条件を第一回目の検知器の 電流値の関数の決定段階、第二回目に発生した検知器値 に関連した第二回目のセグメントの実際の作動条件の決 定段階、実際の作動条件の予想作動条件と比較段階、実 際の作動条件と所定値を超える予想作動条件との差の存 在下でセグメント或いはそのサブセグメントに第二の所 定予知モデルを関係づけ段階を含む。

Monitoring system and method for detecting strain an at least one electric cable

An electric cable comprising a strain sensor longitudinally extending along the cable and including a strain optical fibre arranged within a bending neutral region surrounding and including a bending neutral longitudinal axis of the electric cable, and at least two longitudinal structural elements, at least one of the at least two longitudinal structural elements being a core comprising an electrical conductor, wherein the strain sensor is embedded in a strain-transferring filler mechanically coupling at least one of the at least two longitudinal structural elements with the strain sensor. With the disclosed cable construction, the strain experienced by the at least one of the at least two longitudinal structural elements is transferred to the strain sensor at least in a strained condition. In the preferred embodiments, the electric cable is a heavy-duty cable. The invention relates also to a method for monitoring the strain, and preferably also the temperature, of an electric cable. Further, the invention is directed to a deformation monitoring system for measuring at least the tensile strain of a plurality of electric cables, and in particular of a plurality of heavy-duty cables.

Monitoring method and system for detecting the torsion along a cable provided with identification tags

The present invention relates to a method for monitoring the torsion of a cable comprising the steps of: providing a cable having an outer surface and extending along a longitudinal direction, the cable being provided with at least one identification tag, preferably am RFID tag, arranged in a tag angular position in a cross-sectional plane taken transverse to the longitudinal direction, the at least one tag storing a tag identification code and being capable of transmitting a tag electromagnetic signal; interrogating the at least one identification tag to receive the tag electromagnetic signal, and detecting the tag electromagnetic signal, wherein the step of detecting the tag electromagnetic signal comprises the step of reading the tag identification code and determining the tag angular position of the at least one identification tag. In another aspect, the invention relates to a torsion monitoring system of a cable comprising at least one identification tag. Preferably, the cable is provided with a plurality of identification tags, each tag of the plurality being arranged in a respective tag angular positions.

PROCEDURE AND SYSTEM TO TRANSPORT ELECTRICAL ENERGY IN A LINK.

Procedimiento para transportar energía eléctrica en un enlace de conducción de corriente, que comprende: - suministrar una corriente eléctrica de un valor predeterminado en el enlace; - dividir dicho enlace en un número predeterminado de segmentos (CS1, CS2, CS3, CS4, CS5, CS6, CS7); - colocar una pluralidad de sensores de temperatura (S1, S2, S3, S4, S5, S6, DS) a lo largo del enlace, de manera que tienen por lo menos dos valores de sensor en asociación con cada uno de dichos segmentos, estando afectados dichos sensores mediante dicho valor de la corriente; - obtener los respectivos valores de los sensores desde dichos sensores en un primer momento; caracterizado por el hecho de que también comprende: - asociar un primer modelo de predicción predeterminado a cada uno de dichos segmentos (CS1, CS2, CS3, CS4, CS5, CS6, CS7); - determinar una condición operativa esperada en uno de dichos segmentos en un segundo momento como una función de dichos valores de los sensores en dicho primer momento y de dicho valor de la corriente eléctrica, según dicho primer modelo de predicción asociado con dicho segmento; - determinar una condición operativa real en dicho segmento en dicho segundo momento asociado a los valores de los sensores generados en dicho segundo momento; - comparar dicha condición operativa real con dicha condición operativa esperada; - en presencia de una diferencia entre dicha condición operativa real y dicha condición operativa esperada que supera un valor predeterminado, asociar un segundo modelo de predicción predeterminado con una porción de dicho segmento para la cual se ha determinado dicha diferencia; - cuando la temperatura detectada en el segmento supera una temperatura crítica Tc, generar una señal de alarma y/o control para provocar una acción de regulación en el enlace. Method for transporting electrical energy in a current conduction link, comprising: - supplying an electric current of a predetermined value in the link; - dividing said link into a ...

Deformation monitoring system for electric cables

A deformation monitoring system for measuring at least the tensile strain of at least one electric cable comprising: an electric cable comprising a strain sensor longitudinally extending along the cable and including a strain optical fibre having proximal and distal ends arranged within a bending neutral region surrounding and including a bending neutral longitudinal axis of the electric cable, and at least two longitudinal structural elements, at least one of the at least two longitudinal structural elements being a core comprising an electrical conductor, wherein the strain sensor is mechanically coupled with at least one of the at least two longitudinal structural elements at least in a strained condition, and a sampling apparatus for measuring spectral changes of Brillouin scattered light in the strain optical fibre, the sampling apparatus being optically coupled with at least the proximal end of the strain optical fibre for injecting light into the strain optical fibre.

DEFORMATION MONITORING SYSTEMS TO MEASURE AT LEAST TRACTION DEFORMATION AT LEAST ONE ELECTRICAL CABLE AND A PLURALITY OF ELECTRICAL CABLES

é descrito um cabo elétrico compreendendo um sensor de deformação se estendendo longitudinalmente ao longo do cabo e incluindo uma fibra óptica de deformação arranjada em uma região neutra de dobramento envolvendo e incluindo um eixo longitudinal neutro de dobramento do cabo elétrico, e pelo menos dois elementos estruturais longitudinais, pelo menos um dos pelo menos dois elementos estruturais longitudinais sendo um núcleo compreendendo um condutor elétrico, em que o sensor de deformação é embutido em uma carga de transferência de deformação acoplando mecanicamente pelo menos um dos pelo menos dois elementos estruturais longitudinais com o sensor de deformação. com a construção de cabo revelada, a deformação observada por pelo menos um dos pelo menos dois elementos estruturais longitudinais é transferida para o sensor de deformação pelo menos em uma condição deformada. na modalidade preferida, o cabo elétrico é um cabo de trabalho pesado. a invenção diz respeito a um sistema para monitorar a deformação e, preferivelmente também, a temperatura de um cabo elétrico. adicionalmente, a invenção está voltada para um sistema de monitoramento de deformação para medir pelo menos a deformação por tração de uma pluralidade de cabos elétricos e, em particular, de uma pluralidade de cabos de trabalho pesado. an electrical cable comprising a strain sensor extending longitudinally along the cable and including a strain optical fiber arranged in a neutral folding region surrounding and including a neutral longitudinal axis of the electric cable folding, and at least two structural elements is described longitudinal, at least one of the at least two longitudinal structural elements being a core comprising an electrical conductor, in which the deformation sensor is embedded in a deformation transfer load mechanically coupling at least one of the at least two longitudinal structural elements with the sensor deformation. with the cable construction revealed, the deformation observed by ...

Electric cable with load sensor and monitoring system and method for detecting load in at least one electric cable

Doctor blade holder for cylinders, and system comprising a cylinder and a doctor blade holder

The doctor blade holder ( 7 ) comprises: a plurality of fingers ( 35 ) mounted on a beam ( 9 ), hinged around a rotation axis ( 37 A) and configured to cumulatively form a housing seat ( 41 ) for the doctor blade ( 43 ); wherein the fingers ( 35 ) are pivotable independently from one another around said rotation axis ( 37 A); at least one actuator ( 51 ) comprising at least one chamber ( 53 ) that can be inflated with pressurized fluid, configured and arranged so as to generate a thrust (f 53 ) on the fingers ( 35 ) to make them pivot around said rotation axis ( 37 A). Each finger ( 35 ) can be mounted and removed independently from the others on said beam ( 9 ).

Doctor blade holder for cylinder, and system comprising a cylinder and a doctor blade holder

The doctor blade holder (7) comprises: - a plurality of fingers (35) mounted on a beam (9), hinged around a rotation axis (37A) and configured to cumulatively form a housing seat (41) for the doctor blade (43); wherein the fingers (35) are pivotable independently from one another around said rotation axis (37A); - at least one actuator (51) comprising at least one chamber (53) that can be inflated with pressurized fluid, configured and arranged so as to generate a thrust (f53) on the fingers (35) to make them pivot around said rotation axis (37A). Each finger (35) can be mounted and removed independently from the others on said beam (9).

BLADE HOLDER AND CYLINDER EQUIPPED WITH THE SAW BLADE

Doctor blade holder for cylinders, and system comprising a cylinder and a doctor blade holder

The doctor blade holder (7) comprises: - a plurality of fingers (35) mounted on a beam (9), hinged around a rotation axis (37A) and configured to cumulatively form a housing seat (41) for the doctor blade (43); wherein the fingers (35) are pivotable independently from one another around said rotation axis (37A); - at least one actuator (51) comprising at least one chamber (53) that can be inflated with pressurized fluid, configured and arranged so as to generate a thrust (f53) on the fingers (35) to make them pivot around said rotation axis (37A). Each finger (35) can be mounted and removed independently from the others on said beam (9).

Electric cable with strain sensor and monitoring system and method for detecting strain in at least one electric cable

An electric cable comprising a strain sensor longitudinally extending along the cable and including a strain optical fibre arranged within a bending neutral region surrounding and including a bending neutral longitudinal axis of the electric cable, and at least two longitudinal structural elements, at least one of the at least two longitudinal structural elements being a core comprising an electrical conductor, wherein the strain sensor is embedded in a strain-transferring filler mechanically coupling at least one of the at least two longitudinal structural elements with the strain sensor. With the disclosed cable construction, the strain experienced by the at least one of the at least two longitudinal structural elements is transferred to the strain sensor at least in a strained condition. In the preferred embodiments, the electric cable is a heavy-duty cable. The invention relates also to a method for monitoring the strain, and preferably also the temperature, of an electric cable. Further, the invention is directed to a deformation monitoring system for measuring at least the tensile strain of a plurality of electric cables, and in particular of a plurality of heavy-duty cables.

Monitoring method and system for detecting the torsion along a cable provided with identification tags

The present invention relates to a method for monitoring the torsion of a cable comprising the steps of: providing a cable having an outer surface and extending along a longitudinal direction, the cable being provided with at least one identification tag, preferably am RFID tag, arranged in a tag angular position in a cross-sectional plane taken transverse to the longitudinal direction, the at least one tag storing a tag identification code and being capable of transmitting a tag electromagnetic signal; interrogating the at least one identification tag to receive the tag electromagnetic signal, and detecting the tag electromagnetic signal, wherein the step of detecting the tag electromagnetic signal comprises the step of reading the tag identification code and determining the tag angular position of the at least one identification tag. In another aspect, the invention relates to a torsion monitoring system of a cable comprising at least one identification tag. Preferably, the cable is provided with a plurality of identification tags, each tag of the plurality being arranged in a respective tag angular positions.

Method and system for fiber-optic monitoring of spatially distributed components

A system for monitoring ancillary elements of an electric power distribution network, comprising: an optical fiber path; associated with the ancillary elements to be monitored, respective optical branches branching from the optical fiber path, wherein each optical branch comprises at least one passive optical attenuator operatively coupled to, and having an attenuation adapted to change in response to a change in operating conditions of the respective ancillary element, and an optical reflector; an optical radiation source adapted to inject an optical radiation into the optical fiber path; and an optical receiver adapted to detect back-reflected optical radiation reflected by the optical reflector; the monitoring system is further adapted to recognize a position of the at least one of the ancillary elements based on a characteristic of the back-reflected optical radiation.

Method and device for transmitting electrical power via a connection

Rigid and flexible doctor blade holder and system comprising a cylinder and a doctor blade holder

There is described a doctor blade holder (7) for a doctor blade (43) adapted to co-act with a cylindrical surface (1S) of a rotating cylinder (1), comprising: - a plurality of fingers (35) mounted on a beam (9), hinged around a rotation axis (37A) and configured to cumulatively form a housing seat (41) for the doctor blade (43); wherein the fingers (35) are pivotable independently from one another around said rotation axis (37A); - at least one elastic thrust member (51), configured and arranged to generate a thrust on the fingers ((35) to make them pivot around said rotation axis (37A). Each finger (35) comprises a locking element (67), to rigidly lock the finger to the beam (9).

Verfahren und vorrichtung zur übertragung von elektrischer leistung über eine verbindung

Dynamic power cable arrangement with moisture ingress detection device

A power cable arrangement (28,40) , having a power core with one or more conductors, an intermediate layer disposed about the power core, a water barrier layer tightly arranged about the intermediate layer, and a moisture ingress detection device (10,29) arranged between the water barrier layer and the intermediate layer in direct contact with the water barrier layer. The moisture ingress detection device comprising an elongated optical fiber (12) surrounded by a water-swellable material (14,32) , the swellable material arranged to expand upon contact with moisture and exert a pressure on the underlying optical fiber sufficient to cause an observable change in the attenuation and/or propagation characteristics of the optical fiber.

Cross-bonding box integrity monitoring

A monitoring system for monitoring of a cross-bonding box, wherein the monitoring system comprises a heat transfer means having a first end and a second end; a thermal sensing unit. The first end of the heat transfer means is thermally connectable to a conductor clamp or an earthing bar bridge located within a waterproof housing of the cross-bonding box, wherein the second end of the heat transfer means is thermally connectable to a housing contact area of the inner surface of the waterproof housing. The thermal sensing unit is arranged on the outer surface of the waterproof housing adj acent to the housing contact area of the inner surface.

Dynamic power cable arrangement with moisture ingress detection device

A power cable arrangement (28,40), having a power core with one or more conductors, an intermediate layer disposed about the power core, a water barrier layer tightly arranged about the intermediate layer, and a moisture ingress detection device (10,29) arranged between the water barrier layer and the intermediate layer in direct contact with the water barrier layer. The moisture ingress detection device comprising an elongated optical fiber (12) surrounded by a water-swellable material (14,32), the swellable material arranged to expand upon contact with moisture and exert a pressure on the underlying optical fiber sufficient to cause an observable change in the attenuation and/or propagation characteristics of the optical fiber.

Method and system for determining deformation in a cable

A method and system for determining deformation in a cable, where a sensing optical fiber arrangement is applied along the cable. The method includes injecting a forward pulse pump signal in the optical fiber in a forward direction of the optical fiber and injecting a reverse probe signal in the optical fiber in a reverse direction of the optical fiber. A stimulated Brillouin backscattering is measured and, based on the Brillouin backscattering measurement, information is provided about a deformation of the cable. The forward pulse pump signal is provided as a sum of a stationary signal component and an interrogation pulse component, the stationary signal component has an energy below a Brillouin activation level and the interrogation pulse signal component has an energy which results in that the sum of the stationary signal component and the interrogation pulse signal component exceeds the Brillouin activation level.

Method and system for determining deformation in a cable

Method and system for determining deformation in a cable

Sheath integrity monitoring