JP2017130354A - Cable with discrimination function, cable discrimination device, and cable discrimination method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily discriminate a specific cable from a plurality of cables at any position.SOLUTION: A cable with discrimination function includes a cable body 30 having core wires 2 covered with non-conductive core wire coating 3, an electrically conductive probing conductor 4 arranged in a longitudinal direction of the cable body 30, and non-conductive conductor coating 5 covering the probing conductor 4. When measurement terminals 11 and 12 are pushed into the conductor coating 5, the measurement terminals 11 and 12 and the conductor for prospecting 4 are electrically connected.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cable with a discrimination function having a function of easily discriminating a specific cable from a plurality of cables, a cable discrimination device for discriminating a specific cable from a plurality of cables, and a cable discrimination Regarding the method.

  For example, in a cable pit or duct of a power plant or substation, there are cases where many control cables are laid in messed up without being arranged. In such a case, in order to identify and identify the target control cable when removing the control cable or troubleshooting, follow it little by little visually or by hand from one cable end (for example, the terminal block side of the device). It took a lot of effort and time.

  For this reason, a technique for discriminating a specific cable by arranging an optical fiber in the covering member of the signal line of the cable, allowing light to enter from one end of the optical fiber and emit light from the other end is known. (For example, refer to Patent Document 1). Also, identification information is obtained from the first IC tag provided in one connector of the cable and the second IC tag provided in the other connector, respectively, and one connector and the other connector are based on the two identification information. A technique for determining whether or not they belong to the same cable is known (for example, see Patent Document 2).

JP 2013-196960 A Japanese Patent Laid-Open No. 2006-243834

  By the way, many cables are laid in the cable pits of power plants and substations. For this reason, when applying the technique of patent document 1, there exists a possibility that an optical fiber may be damaged with the weight of a cable. Further, light is only emitted from the other end of the optical fiber, and the cable cannot be determined unless it is from the other end, and the cable cannot be determined in the middle of the cable (in the pit).

  Similarly, in the technique of Patent Document 2, a cable can be determined only by an IC tag provided on the connector of the cable, that is, only at both ends of the cable, and cannot be determined in the middle of the cable. In addition, it is necessary to provide IC tags on both connectors of the cable to manage identification information and the like, which increases equipment costs and management costs.

  Accordingly, an object of the present invention is to provide a cable with a discrimination function, a cable discrimination device, and a cable discrimination method that can easily discriminate a specific cable from a plurality of cables at an arbitrary position.

  In order to solve the above problems, the invention of claim 1 is directed to a cable body in which a core wire is covered with a non-conductive core wire coating, and a conductive probe disposed along a longitudinal direction of the cable body. And a non-conductive conductor coating covering the exploration conductor, and when the measurement terminal is pushed into the conductor coating, the measurement terminal and the exploration conductor are electrically connected. It is a cable with a discrimination function.

  According to the present invention, for example, a first measurement terminal such as a tester is inserted into the conductor covering of the cable A with a discrimination function that is known as a discrimination target, and is electrically connected to the exploration conductor, so that it is known as the discrimination target. A second measuring terminal such as a tester is inserted into the conductor coating of the cable B with no discrimination function, and is electrically connected to the exploration conductor. Next, the electrical value between the first measurement terminal and the second measurement terminal is measured with a tester or the like, and the cable B with a discrimination function is discriminated depending on whether or not the measured value is a predetermined value. Determine if it is the target cable.

  According to a second aspect of the present invention, in the cable with a discrimination function according to the first aspect, the exploration conductor is disposed over the entire circumference of the cable body.

  According to a third aspect of the present invention, in the cable with a discrimination function according to the first aspect, the conductor for exploration and the conductor coating constitute an electric wire for exploration as a unit, and the electric wire for exploration extends in the longitudinal direction of the cable body. It is characterized by being arranged along.

  According to a fourth aspect of the present invention, the cable with a discrimination function according to any one of the first to third aspects is pushed into an arbitrary first measurement position of the conductor coating, and is electrically connected to the exploration conductor. A first measurement terminal; a second measurement terminal that is pushed into an arbitrary second measurement position of the conductor coating and electrically connected to the exploration conductor; the first measurement terminal; and the second measurement terminal. A cable discriminating apparatus comprising: a measurement unit that is connected to a measurement terminal and measures an electrical value between the first measurement position and the second measurement position.

  According to a fifth aspect of the present invention, in the cable discriminating apparatus according to the fourth aspect, an output unit that determines whether or not the electrical value measured by the measurement unit is a predetermined value and outputs the determination result. It is characterized by providing.

  The invention of claim 6 is the tester suspension adapter according to any one of claims 1 to 5, wherein any first measurement position of the conductor covering of the cable with a discrimination function according to any one of claims 1 to 3 is provided. A first conduction step for pushing the first measurement terminal into electrical conduction with the conductor for exploration; and a second measurement terminal for pushing the second measurement terminal into an arbitrary second measurement position of the conductor coating. A second conduction step for electrically conducting with the electrical conductor, a measurement step for measuring an electrical value between the first measurement position and the second measurement position, and the electricity measured in the measurement step And a determination step of determining whether or not a specific value is a predetermined value.

  According to the first, fourth, and sixth aspects of the present invention, a specific / desired cable is selected from a plurality of cables by simply inserting the two measurement terminals into the conductor coating of the cable with a discrimination function and measuring the electrical value. Can be easily identified and identified. Moreover, the cable can be discriminated at an arbitrary position by pushing the measurement terminal into an arbitrary position of the conductor covering of the cable with the discrimination function.

  According to the invention of claim 2, the exploration conductor is arranged over the entire circumference of the cable body, and the measurement terminal is electrically connected to the exploration conductor wherever the measurement terminal is pushed into the conductor coating. The cable can be identified more easily and quickly.

  According to the third aspect of the present invention, the cable with the discrimination function can be easily manufactured because the wire for exploration which is integral is only provided in the cable body. For example, it can be manufactured easily and at low cost simply by disposing existing and ready-made cables for surveying on existing and ready-made cable bodies.

  According to the invention of claim 5, the determination result of whether or not the electrical value measured by the measurement unit is a predetermined value, that is, whether or not the cables into which the two measurement terminals are pushed are the same cable. Is output from the output unit, so anyone can easily and quickly determine the cable.

They are the front view (a) which shows the cable with a discrimination function concerning Embodiment 1 of this invention, and its AA sectional drawing (b). It is a schematic structure figure showing a cable discriminating device concerning an embodiment of this invention. It is a conceptual diagram which shows the operation state of the cable discrimination | determination apparatus of FIG. It is sectional drawing which shows the state which pinched | interposed the cable with a discrimination function of FIG. 1 with the measurement terminal of the cable discrimination device of FIG. It is a conceptual diagram which shows a mode that the cable with a discrimination | determination function of FIG. 1 is discriminate | determined by the cable discrimination | determination apparatus of FIG. It is sectional drawing which shows the cable with a discrimination function which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the cable with another discrimination | determination function which concerns on embodiment of this invention.

  The present invention will be described below based on the illustrated embodiments.

(Embodiment 1)
1-5 shows this embodiment, FIG. 1: is the front view (a) which shows the cable 1 with a discrimination function which concerns on this embodiment, and its AA sectional drawing (b), FIG. 2 is a schematic configuration diagram showing the cable discrimination device 10 according to this embodiment. The cable 1 with a discrimination function is a cable having a function that allows a specific cable to be easily discriminated from among a plurality of cables. In this embodiment, the cable 1 with a discrimination function is a control cable. The description will mainly be given.

  The determination function-equipped cable 1 mainly includes a cable body 30, an exploration conductor 4, and a conductor coating 5.

  The cable body 30 is a cable in which the core wire 2 is covered with a non-conductive core wire covering 3. In this embodiment, the three core wires 2 are covered with the core wire covering 3. Here, the core wire 2 is an electric wire made of an electric conductor, and the periphery thereof may be covered with an insulator. Further, the core wire coating 3 is an insulating protective coating that covers and protects the outer peripheral surface of the core wire 2 and is made of a material (for example, a rubber material) having a predetermined flexibility and strength. Such a cable main body 30 has the same configuration as that of existing and existing control cables.

  The exploration conductor 4 is an electric conductor disposed along the longitudinal direction of the cable main body 30, and is disposed over the entire circumferential direction of the cable main body 30. That is, it is made of a metal film such as copper, covers the outer peripheral surface of the core wire covering 3 of the cable body 30, and is laid in the longitudinal direction of the core wire covering 3 without a gap.

  The conductor coating 5 is a non-conductive coating covering the exploration conductor 4. That is, it is an insulating protective coating that covers and protects the outer peripheral surface of the exploration conductor 4 and is made of a material (for example, a rubber material) having a predetermined flexibility, strength, etc., like the core coating 3. . The hardness of the conductor coating 5 is set so that the measurement terminals 11 and 12 of the cable discrimination device 10 can be pushed in (inserted). Alternatively, a plurality of cuts and open / close windows (terminal insertion portions) into which the measurement terminals 11 and 12 can be inserted may be provided continuously along the longitudinal direction of the conductor coating 5. When the measurement terminals 11 and 12 are pushed into the conductor coating 5, the measurement terminals 11 and 12 and the exploration conductor 4 are electrically connected. In other words, the two measurement terminals 11 and 12 are energized through the exploration conductor 4.

  Here, the exploration conductor 4 is not electrically connected to the outside and is electrically insulated from the outside. That is, when the cable 1 with a discrimination function is used, only the cable body 30 is connected to the equipment or grounded, and the exploration conductor 4 is not electrically connected to the outside or grounded. Absent. In this way, the exploration conductor 4 is attached to the cable body 30 only in an incidental or accessory manner.

  On the other hand, the cable discriminating device 10 is a device for discriminating a specific cable from a plurality of cables, and mainly includes a first measurement terminal 11, a second measurement terminal 12, and an apparatus body 13. Prepare.

  The first measurement terminal 11 is a terminal that is pushed into an arbitrary first measurement position of the conductor covering 5 of the cable 1 with a discrimination function and is electrically connected to the exploration conductor 4. That is, it is made of an electric conductor, and as shown in FIG. 4, both tip portions 11a and 11b are pointed in a clip shape (tongue shape). Then, by sandwiching the cable 1 with a discriminating function between the first measurement terminals 11, the both end portions 11 a and 11 b are inserted into arbitrary positions on the conductor coating 5, thereby being electrically connected to the exploration conductor 4.

  The second measurement terminal 12 is a terminal that is pushed into an arbitrary second measurement position of the conductor coating 5 of the cable 1 with a discrimination function and is electrically connected to the exploration conductor 4. It has an equivalent configuration.

  The first measurement terminal 11 is connected to one end of the first test lead 111, and the other end of the first test lead 111 is connected to the measurement unit 131 in the apparatus main body 13. Similarly, the second measurement terminal 12 is connected to one end of the second test lead 112, and the other end of the second test lead 112 is connected to the measurement unit 131 in the apparatus main body 13. In this embodiment, the test leads 111 and 112 have a length equal to or longer than that of the cable 1 with a discrimination function, and can be measured anywhere on the cable 1 with the discrimination function. On the other hand, the length of the test leads 111 and 112 may be shortened, and one of the test leads 111 and 112 may be connected to the cable 1 with a discrimination function and the other may be grounded.

  In this embodiment, the test leads 111 and 112 are accommodated in the apparatus main body 13 and can be taken in and out. On the other hand, the test leads 111 and 112 may be detachable from the apparatus main body 13 so that they can be carried and stored separately from the apparatus main body 13.

  The apparatus main body 13 includes a negative terminal and a positive terminal, the first test lead 111 (first measurement terminal 11) is connected to the negative terminal, and the second test lead 112 (second measurement terminal 12) is connected to the positive terminal. ) Is connected. The apparatus main body 13 includes a measurement unit 131 and an output unit 132.

  The measurement unit 131 is connected to the first measurement terminal 11 and the second measurement terminal 12 via the test leads 111 and 112, and an electrical value between the first measurement position and the second measurement position. Is to measure. That is, as with the tester, it is an electrical measuring instrument that measures electrical values including a voltage value, a current value, and an electrical resistance value between two points where the measurement terminals 11 and 12 are in contact.

  For example, as shown in FIG. 3, the first measurement position of the exploration conductor 4 can be obtained by passing a current I with the measurement terminals 11 and 12 sandwiching the measurement positions P1 and P2 of the cable 1 with a discrimination function. A resistance value (electrical value) between P1 and the second measurement position P2 is measured. Similarly, a voltage is applied to measure the current value between the measurement positions P1 and P2.

  Here, the apparatus main body 13 includes a display unit (not shown) that displays the measurement values obtained by the measurement unit 131. In addition, it is possible to select which value to measure from electrical values including a voltage value, a current value, and an electrical resistance value.

  The output unit 132 determines whether or not the electrical value measured by the measurement unit 131 is a predetermined value, and outputs a determination result. That is, it is determined whether or not the measurement value by the measurement unit 131 is a value (predetermined value) to be measured between two points of the cable 1 with the same discrimination function. Or “no discrimination” is output by a sound or a lamp if it is not a predetermined value.

  For example, when the resistance value between the measurement positions P1 and P2 is measured as described above, the value to be measured is almost zero if the resistance value is between the measurement positions P1 and P2 of the cable 1 with the same discrimination function. Therefore, if the measurement value by the measurement unit 131 is substantially zero, “good discrimination” is output, and if the measurement value by the measurement unit 131 is not substantially zero, “discrimination failure” is output. Similarly, when a voltage is loaded, it is determined whether or not the measured value by the measuring unit 131 is a predetermined current value (predetermined value) (whether it is not zero or zero) and is output. In this way, it is determined and output whether or not the two measurement terminals 11 and 12 are pushed into the cable 1 with the same determination function.

  Next, the operation of the cable 1 with the discrimination function having such a configuration and the cable discrimination device 10, the cable discrimination method by the cable discrimination device 10, and the like will be described.

  Here, as shown in FIG. 5, one end portions of the control cables 1A, 1B, 1C configured by the cable 1 with a discrimination function are connected to a control panel (equipment) 202 in the substation building 201, and the control cable 1A, 1B, and 1C are laid in the cable pit 205 below the floor G, and the other end is connected to the operation box 204 of the circuit breaker (device) 203. A case where the first control cable 1A is discriminated and replaced in the cable pit 205 will be described. The cable pit 205 is several hundred meters long.

  First, since one end of the control panel 202 is connected to the control panel 202, the operator can easily and reliably recognize and identify the first control cable 1A. The first measurement cable 11 is inserted into the conductor covering 5 with the first measurement terminal 11 sandwiched between one end portion (arbitrary first measurement position) of the first control cable 1A, and the first measurement terminal 11 is electrically connected to the exploration conductor 4 (First conduction step). Here, the first measurement terminal 11 (first test lead 111) may be connected to the ground, or may be connected to the negative terminal of the apparatus main body 13. Thus, in the present invention, the ground connection is also included in the connection to the measurement unit 131.

  Next, in the cable pit 205, the conductor covering 5 with the second measurement terminal 12 sandwiched between the central portions of the control cables 1A, 1B, and 1C (parts in the pit 205, any second measurement position). The second measurement terminal 12 is electrically connected to the exploration conductor 4 (second conduction step). In this state, the measurement unit 131 of the cable discrimination device 10 measures an electrical value between the measurement terminals 11 and 12 (between the first measurement position and the second measurement position) (measurement step). For example, the electrical resistance value is measured as described above.

  Subsequently, the output unit 132 determines whether or not the measured electrical value is a predetermined value (determination step). As a result, when the value is not a predetermined value, that is, when the first control cable 1A is not sandwiched between the second measurement terminals 12, the output unit 132 outputs “determination failure”. The same measurement and determination are performed with the second measurement terminal 12 sandwiched between the control cables 1A, 1B, and 1C.

  Then, when measurement is performed with the second measurement terminal 12 sandwiched between the first control cable 1A, “good discrimination” is output from the output unit 132, so the operator can connect the cable 1 with the discrimination function to the first. The control cable 1A can be discriminated. Further, to determine the first control cable 1A at a position other than the cable pit 205, for example, the operation box 204 side (arbitrary second measurement position) which is the other end side of the first control cable 1A. Similarly, measurement and determination are performed on the control cables 1A, 1B, and 1C.

  Thus, according to the cable 1 with the discrimination function, the cable discrimination device 10 and the cable discrimination method, the two measurement terminals 11 and 12 are pushed into the conductor coating 5 of the cable 1 with the discrimination function to measure the electrical value. By doing this, it is possible to easily and quickly discriminate and identify the cable 1 having the specific / desired discriminating function from among the plurality of cables 1 having the discriminating function. Moreover, by pushing the measurement terminals 11 and 12 into arbitrary positions in the longitudinal direction of the conductor coating 5 of the cable 1 with a determination function, the cable 1 with the determination function can be determined at any position. As a result, it is possible to avoid a power failure due to an erroneous disconnection of the cable 1 with a discrimination function, and it is possible to reduce time and labor required for the power substation construction and failure handling.

  In addition, the exploration conductor 4 and the conductor coating 5 are arranged over the entire circumference of the cable body 30, and the measurement terminals 11 and 12 are connected to the exploration conductor 4 regardless of where the measurement terminals 11 and 12 are pushed into the conductor coating 5. Conducts electrically. That is, since the measurement can be performed at an arbitrary position in the circumferential direction as well as the longitudinal direction of the cable 1 with a discrimination function, the cable 1 with a discrimination function can be discriminated more easily and quickly.

  On the other hand, the determination result of whether or not the electrical value measured by the measurement unit 131 is a predetermined value, that is, the cable 1 with a determination function in which the measurement terminals 11 and 12 are pushed in is the same cable 1 with a determination function. Whether or not there is is output from the output unit 132, so anyone can easily and quickly determine the cable 1 with the determination function.

(Embodiment 2)
FIG. 6 is a cross-sectional view (cross-sectional view in a plane perpendicular to the axis) showing the cable 1 with a discrimination function according to this embodiment. In this embodiment, the exploration conductor 4 and the conductor coating 5 integrally form the exploration electric wire 50, and the exploration electric wire 50 is arranged along the longitudinal direction of the cable body 30. 1, the same reference numerals are given to the same components as those of the first embodiment, and the description thereof is omitted.

  That is, the exploration electric wire 50 is configured by existing and existing covered electric wires, and the outer periphery of the linear and conductive exploration conductor 4 is covered with the electrically insulating conductor coating 5. Such an exploration wire 50 is arranged along the longitudinal direction of the cable body 30. Here, any arrangement method may be used. For example, the exploration wire 50 is attached to the cable body 30 by a fastening means such as a band, or the exploration wire 50 is cabled by a joining means such as an adhesive. It may be joined to the main body 30.

  According to such an embodiment, since the search electric wire 50 that is integral is only disposed in the cable main body 30, the cable 1 with the present discrimination function is used by using existing and ready-made cables and electric wires. It can be easily manufactured. For example, it can be manufactured easily and at low cost simply by disposing the existing and ready-made cable 50 for investigation to the existing and ready-made cable body 30.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the device main body 13 of the cable discrimination device 10 includes the output unit 132. However, the cable discrimination device 10 may be configured with existing and existing testers without including the output unit 132. Good.

  In the first embodiment, the exploration conductor 4 that is a conductive paint is laid and applied to the entire circumferential surface of the cable body 30, and the exploration conductor 4 is covered with a conductor coating 5 that is a nonconductive paint. May be. Further, in the second embodiment, as shown in FIG. 7, the wire-shaped exploration conductor 4 may be disposed in contact with the cable body 30, and the exploration conductor 4 may be covered with the conductor coating 5.

DESCRIPTION OF SYMBOLS 1 Cable with discrimination | determination function 2 Core wire 3 Core wire coating | cover 30 Cable main body 4 Searching conductor 5 Conductor coating 50 Searching electric wire 10 Cable discrimination | determination apparatus 11 1st measurement terminal (measurement terminal)
12 Second measurement terminal (measurement terminal)
13 Device Body 131 Measuring Unit 132 Output Unit

Claims (6)

A cable body whose core wire is covered with a non-conductive core wire sheath;
A conductive exploration conductor disposed along the longitudinal direction of the cable body;
A non-conductive conductor coating covering the exploration conductor;
And the measurement terminal and the exploration conductor are electrically connected to each other when the measurement terminal is pushed into the conductor coating.   The cable with a discrimination function according to claim 1, wherein the exploration conductor is disposed over the entire circumference of the cable body.   2. The exploration conductor and the conductor coating constitute an exploration electric wire as a unit, and the exploration electric wire is disposed along a longitudinal direction of the cable body. Cable with discrimination function. A first measurement terminal that is pushed into an arbitrary first measurement position of the conductor coating of the cable with a discrimination function according to any one of claims 1 to 3 and is electrically connected to the exploration conductor;
A second measurement terminal which is pushed into an arbitrary second measurement position of the conductor coating and is electrically connected to the exploration conductor;
A measurement unit connected to the first measurement terminal and the second measurement terminal and measuring an electrical value between the first measurement position and the second measurement position;
A cable discriminating apparatus comprising:   The cable determination device according to claim 4, further comprising an output unit that determines whether or not an electrical value measured by the measurement unit is a predetermined value and outputs a determination result. The first measurement terminal is pushed into an arbitrary first measurement position of the conductor coating of the cable with a discrimination function according to any one of claims 1 to 3, and is electrically connected to the exploration conductor. One conduction step;
A second conduction step of pushing a second measurement terminal into an arbitrary second measurement position of the conductor coating to electrically connect with the exploration conductor;
A measurement step of measuring an electrical value between the first measurement position and the second measurement position;
A determination step of determining whether or not the electrical value measured in the measurement step is a predetermined value;
A cable discrimination method comprising:

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