A cable termination identification system and method

Abstract

The application discloses a kind of control cable wiring terminal identification system and method, belong to electric power system school line detection technical field, including: core terminal identification device, it is set in place equipment side, it includes plugboard, plugboard sets fixed value resistance, fixed value resistance one end and core line contact jack are connected, and fixed value resistance other end is connected with grounding point;The first plug is arranged on one side of the plugboard, and the other side is provided with a slot, and a plurality of plugboards are connected in a circular shape;Measuring device, it is set in centralized control cabinet side, it includes with the second plug of centralized control cabinet side core line connection and measuring line, second plug has core line contact point, and measuring line is connected with detection arrow, detection arrow can rotate and with core line contact point contact.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power system line checking detection, in particular to a control cable terminal identification system and method. BACKGROUND

[0002] The statements herein merely provide background technology related to the present application, and do not necessarily constitute prior art.

[0003] In the construction, reconstruction and operation and maintenance of modern power plants, transformer / substation, chemical plants, municipal buildings and other engineering projects, a distributed control system (multiple local devices and one centralized control center) is indispensable, and a large number of control cables or secondary cores will be used. During construction, reconstruction and operation and maintenance, it is inevitable to carry out a large number of centralized line checking. The engineering personnel need to check and compare dozens or even hundreds of indistinguishable cores one by one to confirm the terminal connection position of the cores.

[0004] The inventor found that the existing line checking method is to use a walkie-talkie, a multimeter and other devices by at least two line checking personnel to hold one end of the cable connector respectively, and to determine the checked core line by verbal confirmation of the core line conduction. This testing method has many disadvantages: first, the efficiency is low, the measurement speed is slow, and a large amount of time and energy of the engineering personnel is occupied; second, at least two people must measure at the same time, and both of them need to hold communication equipment. If there is signal interference on the site, the line checking work cannot be completed; third, the method of identifying the core line by human being is uncertain, and the line checking result may be wrong due to miscommunication, operation error and the like. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a control cable terminal identification system and method, which sets a core terminal identification device and a measuring device, and sets the core terminal identification device and the measuring device at both ends of the core line respectively. By using the core terminal identification device and the measuring device together, different fixed value resistors are used to distinguish different core lines, which can accurately identify the core line at both ends of the core line, and solves the problems of waste of manpower, time and inaccurate line checking result of the existing line checking method.

[0006] In order to achieve the above purpose, the present application is realized by the following technical scheme:

[0007] In the first aspect, the present application provides a control cable terminal identification system, which comprises:

[0008] The core terminal identification device is arranged on the local device side, which comprises a plugboard, the plugboard is provided with a fixed value resistor, one end of the fixed value resistor is connected with a core line contact jack, and the other end of the fixed value resistor is connected with a grounding point; a first plug is arranged on one side of the plugboard, and a plug slot is arranged on the other side of the plugboard, and a plurality of plugboards are connected in a circular shape;

[0009] The measuring device is arranged on the side of the centralized control cabinet, and comprises a second plug connected with the core wire on the side of the centralized control cabinet and a measuring circuit, the second plug has a core wire contact point, and the measuring circuit is connected with a detection arrow, the detection arrow is rotatable and in contact with the core wire contact point.

[0010] As a further technical solution, the single core terminal identification device corresponds to the core wire of a single cable to be calibrated, the core terminal identification device is connected to one end of the corresponding core wire, and the other ends of the core wires of the multiple cables to be calibrated are connected to the measuring device.

[0011] As a further technical solution, the plug disc is an arc-shaped plate structure, the grounding point is arranged at the center of the circle when the plurality of plug discs are connected in a head-to-tail manner, and the plurality of plug discs are connected to the same grounding point.

[0012] As a further technical solution, the fixed resistor and the diode are connected in series, and the diode is connected to the grounding point through a grounding lead.

[0013] As a further technical solution, the number disc is fixedly arranged on the surface of the plug disc, and the number disc is marked with a digital number.

[0014] As a further technical solution, the detection arrow is connected to the axial rotation mechanism, and the axial rotation mechanism drives the detection arrow to move during the measurement.

[0015] As a further technical solution, the second plug is arranged in a circular shape, and the arrow contact points are also arranged in a circular shape; the arrow contact points are provided with scale marks.

[0016] As a further technical solution, the measuring circuit is further connected to a third plug, and the third plug is connected to the grounding net.

[0017] As a further technical solution, the measuring circuit is connected to a display device, the measuring circuit is connected to a power supply, and a switch is arranged.

[0018] In a second aspect, the application provides a method for using the cable terminal identification system, comprising the following steps:

[0019] The core wires needing to be calibrated are combed, the cable number heads are defined one by one according to the wiring diagram, and a comparison table is made;

[0020] The core wires are sleeved into the corresponding number plates one by one at the device terminals of each on-site device, and are inserted into the core wire contact jacks in the core terminal identification devices;

[0021] All the core terminal identification devices of the core terminals in each device area are spliced, and the grounding ends of all the core terminal identification devices are reliably connected to the grounding net.

[0022] At the centralized control cabinet, the measuring device is reliably connected with the grounding net, all core wires are inserted into the second plug of the measuring device one by one, the switch is started, the axial rotation mechanism is rotated, and the number displayed by the display device is the core wire number at the on-site equipment side, so that the number corresponding to each core wire at the centralized control cabinet is determined, the axial rotation is performed, and the measuring result is recorded.

[0023] According to the table, the actual number of the core wire is found, the serial number plate is found, and the wiring is performed.

[0024] Returning to each on-site equipment, the terminal identification device of each core wire is checked and retrieved, and then the wiring of the core wire at the on-site side is performed.

[0025] The beneficial effects of the present application are as follows:

[0026] (1) The present application sets the core wire terminal identification device and the measuring device, and sets the core wire terminal identification device and the measuring device at both ends (the on-site equipment side and the centralized control cabinet side) of the core wire, respectively. By using the core wire terminal identification device and the measuring device in cooperation, different fixed resistors are used to distinguish different core wires, the corresponding number of the core wire can be accurately measured at the centralized control cabinet side, and then the subsequent wiring work is performed according to the number, without the need for multiple people to cooperate, and the communication environment is not affected, the speed of the line calibration is improved, and the accuracy of the line calibration is ensured.

[0027] (2) The axial rotation mechanism of the present application is coaxially arranged with the circularly arranged arrow contact, and the axial rotation mechanism realizes the accurate connection of the arrow contact and each core wire contact through the ratchet technology, avoiding the simultaneous connection of one arrow contact and multiple core wire contacts, and ensuring the measurement accuracy of the measuring device.

[0028] (3) The core wire terminal identification device at the on-site equipment side of the present application is a passive module component, and the entire line calibration process is performed using a safe voltage below 24V, which is safe and reliable, and ensures the personal safety of the line calibration personnel. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation of the present application.

[0030] Figure 1 is a structural schematic view of the core wire terminal identification device according to one or more embodiments of the present application;

[0031] Figure 2 is a structural schematic view of 12 core wire terminal identification devices assembled according to one or more embodiments of the present application;

[0032] Figure 3is a structural schematic diagram of a measuring device according to one or more embodiments of the present application;

[0033] Figure 4 is a measuring circuit schematic diagram of a measuring device according to one or more embodiments of the present application;

[0034] In the figure: the mutual distance or size is exaggerated for showing the position of each part, and the schematic diagram is only for illustration;

[0035] Wherein, 1, first plug; 2, number disc; 3, plug disc; 4, diode; 5, fixed value resistance; 6, core wire contact socket; 7, plug slot; 8, grounding lead; 9, grounding point; 10, second plug; 11, third plug; 12, scale mark; 13, arrow contact; 14, axial rotation mechanism; 15, display device; 16, switch; 17, power supply; 18, detection arrow. DETAILED DESCRIPTION

[0036] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0037] As introduced in the background, the existing line calibration method has low efficiency, slow measurement speed, occupies a large amount of time and energy of engineering personnel; at least two people need to measure at the same time, and both of them need to hold communication equipment, if there is signal interference on site, the line calibration work is difficult to complete; the method of identifying whether the core wire is conducted or not by human being has great uncertainty, and it is easy to cause the problem of incorrect line calibration result due to miscommunication, operation error, etc. In order to solve the above technical problems, the present application proposes a control cable terminal identification system and method.

[0038] Example 1

[0039] In a typical embodiment of the present application, as shown in Figures 1-4 a control cable terminal identification system is proposed, which comprises a core wire terminal identification device, a measuring device and a plurality of grounding leads 8 for connecting the core wire terminal identification device and the ground network.

[0040] Among them, the core wire terminal identification device is provided with a plurality of and is arranged at the local equipment side, the measuring device is provided with one and is arranged at the centralized control cabinet side, a single core wire terminal identification device corresponds to a single core wire to be calibrated, the core wire terminal identification device is connected to one end of the corresponding core wire, and the other ends of a plurality of core wires to be calibrated are connected to the measuring device.

[0041] Specifically as Figure 1As shown, the core terminal identification device is composed of a first plug 1, a number disc 2, a plug disc 3, a diode 4, a fixed resistor 5, a core contact jack 6 and a plug slot 7. The first plug 1, the number disc 2, the diode 4, the fixed resistor 5, the core contact jack 6 and the plug slot 7 are all arranged on the plug disc 3.

[0042] As shown, the plug disc 3 is an arc-shaped plate structure. One end of the plug disc 3 in the length direction is the first plug 1, and the other end of the plug disc 3 is the plug slot 7. The plug disc 3 and the plug discs 3 on both sides thereof can be fixedly connected through the cooperation of the first plug 1 and the plug slot 7. A plurality of plug discs 3 are connected end to end to form a whole.

[0043] As shown, Figure 2 In the embodiment, 12 plug discs 3 are arranged. The 12 plug discs 3 are connected end to end in sequence, and are fixedly connected through the cooperation of the adjacent first plug 1 and plug slot 7, so as to realize the fixed connection of a plurality of core terminal identification devices.

[0044] It can be understood that in other embodiments, the plug disc 3 can also be arranged in other quantities, and the radius of the plug disc 3 can be arranged according to the required quantity, as long as the arranged plug discs 3 can be connected end to end in sequence to form a circle, which is not limited here.

[0045] The number disc 2 is fixedly arranged on the surface of the plug disc 3. The number disc 2 is marked with a number, and is mainly used for the label classification of the core terminal identification device. In the embodiment, the number disc 2 is located on the side close to the first plug 1.

[0046] It can be understood that in other embodiments, the number disc 2 can also be arranged at any position on the plane of the plug disc 3, as long as it does not affect the work of other structural components on the plug disc 3, which is not limited here.

[0047] The arc-shaped middle part of the inner side of the plug disc 3 is a convex structure. The diode 4 and the fixed resistor 5 are fixedly arranged at the convex part of the middle part of the plug disc 3. The diode 4 and the fixed resistor 5 are connected in series. The fixed resistor 5 is connected with the core contact jack 6. The diode 4 is connected with the grounding point 9 through the grounding lead 8.

[0048] When a plurality of plug discs are connected end to end, the plurality of plug discs form a circle. The grounding points 9 are all arranged at the center of the circle, and the plurality of plug discs are connected with the same grounding point.

[0049] The diode 4 is a single-way diode, which can avoid the interference between the core terminal identification devices. The core contact jack 6 is used for the plug connection of the core wire. The core contact jack 6 is connected with the fixed resistor 5 by using a metal sheet. The grounding lead 8 is a copper core soft lead wire. The grounding point 9 is connected with the grounding net.

[0050] The fixed resistor 5 in the core terminal identification device in this embodiment has a unique resistance value, and the corresponding number plate 2 is set according to the different resistance values to distinguish the types of the core terminal identification device.

[0051] For example, the core terminal identification device with a 1kΩ fixed resistor 5 records Rx=1kΩ, and the number plate 2 is marked as #1. The core terminal identification device with a 2kΩ fixed resistor 5 records Rx=2kΩ, and the number plate 2 is marked as #2. Similarly, the Rx value ranges from 1kΩ to 100kΩ, and the number of the number plate 2 represents the number of the cable core wire (in this embodiment, the number of the cable core wire is temporarily defined during the calibration process).

[0052] It can be understood that in other embodiments, the Rx value can be adjusted to a larger range by adjusting the specifications of the fixed resistor 5, and the specific range is determined according to actual needs, which is not limited here.

[0053] When the core terminal identification device is connected to the grounding net, the resistance between each core terminal identification device and the grounding net is the resistance value Rx of the fixed resistor 5 in the identification device, and the resistance between the identification devices tends to infinity.

[0054] The reason is that a single-conduction diode 4 is installed between the fixed resistor 5 and the ground potential. When measuring the resistance between the core contact jack 6 (point a) and the grounding point (point N), a positive voltage (+24V) is applied to point a, and the diode is turned on when the potential of point N is 0. At this time, the measured resistance is the resistance value Rx of the fixed resistor 5.

[0055] When measuring the resistance between point a and another core contact jack (point b), a positive voltage (+24V) is applied to point a, and the N points of the two core terminal identification devices are connected together. When the potential of point b is 0, the diode between point b and point N is cut off, the entire circuit is not connected, and the measured resistance tends to infinity, achieving electrical isolation between the core terminal identification devices.

[0056] The core terminal identification device on the ground equipment side is a passive module component, and the entire calibration process is performed using a safe voltage below 24V, which is safe and reliable, and ensures the personal safety of the calibration personnel.

[0057] The measuring device is composed of a measuring circuit, a second plug 10, a third plug 11, a scale mark 12, an arrow contact 13, an axial rotation mechanism 14, a display device 15, a switch 16, and a power supply 17.

[0058] The second plug 10 is provided with several second plugs 10, one side of the second plug 10 is used for centralized control cabinet side core wire insertion, the other side of the second plug 10 has several core wire contacts, the core wire contacts are connected with corresponding arrow contacts 13, the arrow contacts 13 are matched with the detection arrow 18, and are connected with the measurement line under the action of the detection arrow 18.

[0059] In order to facilitate the line calibration work, the second plug 10 is arranged in a circular shape as the core wire terminal identification device, so that the arrow contacts 13 are also arranged in a circular shape.

[0060] The arrow end of the detection arrow 18 is in contact with the arrow contact 13, and the other end is connected with the measurement line. Under the limitation of the arrow contact 13, the detection arrow 18 performs circular motion when working. In order to facilitate the movement of the detection arrow 18, an axial rotation mechanism 14 is arranged, and the detection arrow 18 is fixedly arranged on the axial rotation mechanism 14.

[0061] The axial rotation mechanism 14 is coaxially arranged with the circularly arranged arrow contacts 13. The axial rotation mechanism 14 realizes accurate connection of the arrow contact 13 and each core wire contact through ratchet technology, avoiding simultaneous connection of one arrow contact 13 and multiple core wire contacts.

[0062] In order to facilitate the marking of the scale where the arrow contact 13 is located, a scale mark 12 is also arranged on each arrow contact 13. Any form of mark can be used. In the embodiment, the number form of N1, N2, … is used, and the specific mark form is not limited.

[0063] The third plug 11 is connected with the measurement line. The third plug 11 is a grounding wire plug. The third plug 11 is reliably connected with the grounding net through the copper core grounding soft wire, so as to realize the connection of the measurement line and the grounding net.

[0064] The display device 15 is provided with a decoding system. The display device 15 is connected with the measurement line, and can display specific measurement numbers. The power supply 17 is used for providing power support for the measurement device. The switch 16 is arranged on the connection line between the power supply 17 and the measurement circuit, and can control the switch of the measurement device.

[0065] During measurement, the rotation of the axial rotation mechanism 14 makes the arrow contact 13 connect different second plugs 10 respectively, so as to communicate with different measured core wires. Through the measurement line and the display device 15, the corresponding self-defined core wire number is finally obtained.

[0066] As Figure 4As shown, Rx is the measured resistance value, which can be measured by the measuring device, and the number of the number plate 2 corresponding to the core terminal identification device is displayed in the display device 15, for example, when Rx = 2kΩ, the actual measurement result is between 1.95kΩ and 2.05kΩ, by setting the decoding system, the digital display of the display device 15 is 02, and the recording is the self-defined #2 core wire.

[0067] It can be understood that the actual measurement result range can be adjusted according to actual needs, and the actual measurement result in the embodiment is only an example for easy understanding and description, which is not limited too much here.

[0068] Different fixed resistors are used to distinguish different cores, and all cores can be identified at one time by detecting the rotation of the arrow 18 at the centralized control cabinet side, without the need for multiple people to cooperate, thereby improving the accuracy and speed of the core identification work.

[0069] Embodiment 2

[0070] In another typical embodiment of the present application, a use method of the control cable terminal identification system as described in embodiment 1 is provided, which is specifically as follows:

[0071] Step 1: The core wire to be calibrated is combed by the calibration personnel, and the cable number head is self-defined as the number head used in the embodiment according to the wiring diagram, for example, the NL45853 core wire in the wiring diagram is self-defined as #1 core wire, and a comparison table is made;

[0072] Step 2: The core wire is sleeved into the corresponding actual number plate at the device terminal of each local device, and is inserted into the core wire contact jack 6 in the core terminal identification device, to ensure good core wire metal contact;

[0073] Among them, the actual number plate number is determined according to the number plate 2 in the core terminal identification device corresponding to the core wire;

[0074] Step 3: The core terminal identification devices of all core terminals in each device area are spliced, and the grounding ends of all core terminal identification devices are reliably connected with the grounding grid;

[0075] Step 4: Go to the centralized control cabinet, reliably connect the third plug 11 of the measuring device with the grounding grid through the copper core grounding soft wire, and insert all core wires into the second plug 10 of the measuring device one by one, ensure that there is no error, start the switch 16, rotate the axial rotation mechanism 14, and the number displayed on the display device 15 is the core wire number on the opposite side (local device side), thereby determining the corresponding number of each core wire at the centralized control cabinet, rotating one by one, and recording one by one to obtain the measurement result;

[0076] Fifth step: according to the table prepared in the first step, find the actual number of the core, string number plate, and make the connection;

[0077] Sixth step: return to each on-site device, check and retrieve all core terminal identification devices, and then make the connection of the on-site side core.

[0078] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A control cable termination identification system, characterized by, The application relates to a core terminal identification device and a measurement device. The core terminal identification device is arranged on the local equipment side and comprises a plugboard, a fixed resistor arranged on the plugboard, a core contact plug hole connected to one end of the fixed resistor, and a grounding point connected to the other end of the fixed resistor; a first plug is arranged on one side of the plugboard, a plug slot is arranged on the other side of the plugboard, a plurality of plugboards are connected in a head-to-tail mode to form a circular shape; the fixed resistor and a diode are connected in series, and the diode is connected to the grounding point through a grounding lead; The measurement device is arranged on the centralized control cabinet side and comprises a second plug connected to the core on the centralized control cabinet side and a measurement circuit, the second plug has a core contact point, the measurement circuit is connected to a detection arrow, and the detection arrow is rotatable and in contact with the core contact point; The detection arrow is connected to an axial rotation mechanism, and the axial rotation mechanism drives the detection arrow to move during measurement; The second plug is arranged in a circular shape, the arrow contact point is also arranged in a circular shape, and the arrow contact point is provided with a scale mark; The axial rotation mechanism is coaxially arranged with the circularly-arranged arrow contact point, the axial rotation mechanism realizes accurate connection of the arrow contact point and each core contact point through a ratchet technology, and the arrow contact point is prevented from being simultaneously connected to multiple core contact points; The plugboard is an arc-shaped plate structure, the grounding point is arranged at the center of the circular shape when the plurality of plugboards are connected in a head-to-tail mode, and the plurality of plugboards are connected to the same grounding point.

2. The control cable terminal identification system of claim 1, wherein, A single core terminal identification device is one-to-one corresponding to a single core of a to-be-calibrated wire, the core terminal identification device is connected to one end of the corresponding core, and the other ends of the cores of the plurality of to-be-calibrated wires are connected to the measurement device.

3. The control cable terminal identification system of claim 1, wherein, A number plate is fixedly arranged on the surface of the plugboard, and the number plate is provided with a digital mark.

4. The control cable terminal identification system of claim 1, wherein, The measurement circuit is further connected to a third plug, and the third plug is connected to a grounding net.

5. The control cable terminal identification system of claim 1, wherein, The measurement circuit is connected to a display device, the measurement circuit is connected to a power supply, and a switch is arranged.

6. The method of using a cable termination identification system according to any one of claims 1-5, wherein, The application further discloses a core terminal identification method. The application comprises the following steps: The cores of the wires needing calibration are combed, the cable number heads are self-defined one by one according to a wiring diagram, and a comparison table is prepared; The cores of the wires are sleeved into corresponding number plates one by one on the device terminals of the local equipment, and the cores of the wires are inserted into the core contact plug holes in the core terminal identification devices; All the core terminal identification devices of the cores of the wires in each device area are spliced, and the grounding ends of all the core terminal identification devices are reliably connected to the grounding net; The measurement device is reliably connected to the grounding net at the centralized control cabinet, all the cores of the wires are inserted into the second plugs of the measurement device one by one, the switch is started, the axial rotation mechanism is rotated, and the number displayed on the display device is the core number on the local equipment side, so that the core numbers corresponding to the cores of the wires at the centralized control cabinet are determined, the axial rotation mechanism is rotated one by one, and the measurement results are recorded one by one; According to the comparison table, the actual core numbers are found, the number plates are connected in series, and the wires are connected; The core terminal identification devices are returned to the local equipment, and the wires on the local equipment side are connected.

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