CN212301825U - Portable intelligent secondary cable alignment device - Google Patents
Portable intelligent secondary cable alignment device Download PDFInfo
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- CN212301825U CN212301825U CN202020329530.1U CN202020329530U CN212301825U CN 212301825 U CN212301825 U CN 212301825U CN 202020329530 U CN202020329530 U CN 202020329530U CN 212301825 U CN212301825 U CN 212301825U
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Abstract
The utility model discloses a portable intelligent secondary cable alignment device, which comprises a cable far-end numbering device, a cable alignment device, a display, a control circuit and a fault alarm circuit; the cable far-end numbering device is arranged at a far-end cable and used for numbering core wires of the tested cable at the far end; the cable wire aligning device is arranged at the position of the near-end cable and used for measuring the corresponding relation between each core wire and the far end; the display is connected with the cable wire aligning device and used for displaying the serial numbers of the core wires at the near end; the input end of the control circuit is connected with the cable butt-joint device, the output end of the control circuit is connected with the display, and the real-time display and refreshing of the core wire number are realized through the control circuit; the fault alarm circuit is connected with the cable wire checking device and used for identifying short circuit and open circuit fault states and giving an alarm to prompt staff. The utility model discloses the structure is light and handy, and the function is perfect, and easy operation can accurate, accomplish the line work fast to effectively improve work efficiency.
Description
Technical Field
The utility model relates to a portable intelligent secondary cable is to line device is applied to the secondary cable of transformer substation transformation, build, when newly-built to line work, realizes quick, accurate line through replacing original manual work to line working method.
Background
When the work of newly building, expanding, transforming and the like of a transformer substation is carried out, the alignment of the laid secondary cable core wires is needed to be carried out so as to judge the quality of the cable. Meanwhile, the problems of circuit breaking and the like caused by misconnection of core wires can be avoided through alignment, so that the working quality is improved. The method generally adopted in the actual working site comprises the following steps: two persons are respectively arranged on two sides of the same cable, all core wires are sequentially in short circuit with a common line at the home end of the cable, and meanwhile, the short-circuit core wires are informed to an opposite end worker. And after the opposite end receives the short-circuit information, utilizing a universal meter to test the on-off of the core wire and the public end, thereby distinguishing the cable core wire used by the opposite end.
However, with the centralized transformation and extension of old transformer substations, the great increase of the cable usage, the complication of the working site environment and the increase of the working strength, the working time is greatly increased by the working mode, the wire alignment error rate is also remarkably improved, the working efficiency is reduced, the debugging and the use of secondary devices such as protection and the like are influenced, even the misoperation of the protection device is caused, the potential safety operation hazard of the transformer substations is easily caused, and the development trend of modern intelligence is not met. Obviously, if the traditional manual method is still used for alignment, the following problems will occur: 1) with the increase of the use amount of the cable, the working time is greatly increased by the working mode; 2) the working mode needs at least two persons to carry out simultaneously, which wastes manpower and reduces labor productivity; 3) random man-made alignment errors are easy to generate due to carelessness of workers; 4) an interphone is used in a control room when the line is needed, so that the relay protection regulation is violated; 5) the electromagnetic interference of the transformer substation, the length of the cable and other objective factors can influence the line accuracy.
From the above analysis, the manual alignment method cannot meet the requirement of field work. Meanwhile, with the advent of the intelligent and mechanized era, a portable intelligent secondary cable alignment device needs to be researched urgently, so that the on-site secondary cable alignment efficiency is effectively improved, and the alignment error rate is reduced.
Disclosure of Invention
According to prior art not enough, the utility model discloses develop a portable intelligent secondary cable to line device to reach that the structure is light and handy, the function is perfect, easy operation can be accurate, accomplish the purpose to line work fast. Meanwhile, the pair line device can effectively improve the working efficiency of the pair line of the secondary cables on the site such as the comprehensive automatic transformation of the transformer substation and the like, and eliminate potential safety hazards.
The utility model discloses realize according to following technical scheme:
a portable intelligent secondary cable aligning device comprises:
the cable far-end numbering device is arranged at the far-end cable and is used for numbering core wires of the tested cable at the far end;
the cable wire aligning device is arranged at the near-end cable and used for measuring the corresponding relation between each core wire and the far end;
the display is connected with the cable wire aligning device and used for displaying the serial numbers of the core wires at the near end;
the input end of the control circuit is connected with the cable butt-joint device, the output end of the control circuit is connected with the display, and the real-time display and refreshing of the core wire number are realized through the control circuit;
and the fault alarm circuit is connected with the cable wire matching device and is used for identifying short circuit and open circuit fault states and giving an alarm to prompt staff.
Further, the cable wire aligner comprises a near-end receiving voltage circuit and an A/D converter; one end of the near-end receiving voltage circuit is connected with the cable far-end numbering device, the other end of the near-end receiving voltage circuit is connected with the A/D converter, resistors with different resistance values are arranged at the cable far-end numbering device, the near-end receiving voltage circuit receives different voltages transmitted by the cable, and the A/D converter converts voltage analog quantity into digital quantity and displays the digital quantity on the display.
Further, the display adopts a nixie tube; the cable wire matching device further comprises a decoding circuit, wherein the decoding circuit is connected between the A/D converter and the display, and the decoding circuit is used for decoding the binary codes output by the A/D converter.
Furthermore, the nixie tube adopts a common cathode nixie tube and is connected with a CD4511 chip for driving the common cathode nixie tube.
Further, the A/D converter adopts an ADC0808 singlechip.
Further, the control circuit adopts a 555 timer.
Further, the fault alarm circuit comprises a plurality of light emitting diodes with different colors, and the short circuit and the open circuit phenomena existing in the cable are alarmed and displayed through the plurality of light emitting diodes.
The utility model discloses beneficial effect:
the reasons that the on-site secondary cable core wire alignment efficiency is low and the error is large mainly come from the aspects of long operation time of workers, low communication efficiency, time waste of core wires sequentially accessed, complex alignment process and the like. Through developing a portable intelligent secondary cable to the line device, can insert all heart yearns fast and can observe the core wire number simultaneously at the cable both ends, reduced to the line time by a wide margin. Meanwhile, the alignment device is light in structure, complete in function, simple in operation and capable of accurately and quickly completing alignment work, so that the work efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a portable intelligent secondary cable alignment device;
FIG. 2 is a diagram of an embodiment of a portable intelligent secondary cable alignment device;
FIG. 3 is a diagram of the components of a portable intelligent secondary cable alignment device;
FIG. 4 is a structure diagram of a portable intelligent secondary cable alignment device ADC0808 single-chip microcomputer;
fig. 5 is a control circuit of the portable intelligent secondary cable alignment device.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a portable intelligent secondary cable alignment device comprises a cable far-end numbering device, a cable alignment device, a display, a control circuit and a fault alarm circuit; the cable far-end numbering device is arranged at a far-end cable and used for numbering core wires of the tested cable at the far end; the cable wire aligning device is arranged at the position of the near-end cable and used for measuring the corresponding relation between each core wire and the far end; the display is connected with the cable wire aligning device and used for displaying the serial numbers of the core wires at the near end; the input end of the control circuit is connected with the cable butt-joint device, the output end of the control circuit is connected with the display, and the real-time display and refreshing of the core wire number are realized through the control circuit; and the fault alarm circuit is connected with the cable wire aligning device and is used for identifying short circuit and open circuit fault states and giving an alarm to prompt staff.
With continued reference to fig. 2, the cable counterpoint comprises a proximal receiving voltage circuit and an a/D converter;
one end of the near-end receiving voltage circuit is connected with the cable far-end numbering device, the other end of the near-end receiving voltage circuit is connected with the A/D converter, resistors with different resistance values are arranged at the cable far-end numbering device, the near-end receiving voltage circuit receives different voltages transmitted by the cable, and the A/D converter converts voltage analog quantity into digital quantity and displays the digital quantity on the display.
The preferred scheme is as follows: the display adopts a nixie tube; the nixie tube only supports BCD code input, and therefore the nixie tube further comprises a decoding circuit, the decoding circuit is connected between the A/D converter and the display, and binary codes output by the A/D converter are decoded through the decoding circuit.
Further scheme: the nixie tube adopts a common cathode nixie tube and is connected with a CD4511 chip for driving the common cathode nixie tube. The CD4511 chip is used to drive the common cathode nixie tube display, and features the CMOS circuit with BCD conversion, blanking and latching control, seven-segment decoding and driving functions, and can provide relatively great source current to drive the nixie tube display directly.
The preferred scheme is as follows: the A/D converter adopts an ADC0808 singlechip. The AD0808 singlechip is an 8-bit A/D converter, and the conversion method is a successive approximation type. AD0808 precision is 1/2 LSB. The AD converter is internally composed of a high-impedance chopper-stabilized comparator, a 256-resistor voltage divider with an analog switch tree group and a successive approximation register. The on-off of the 8-way analog switch is controlled by an address latch and a decoder, so that a single-side analog signal can be randomly accessed in 8 channels. The internal structure and circuit of AD0808 are shown in FIG. 4.
As shown in FIG. 5, the control circuit is used for refreshing the measurement result, thereby controlling the display time of the nixie tube or the conversion time of the AD0808 singlechip. Setting display result 2 of portable intelligent secondary cable alignment devicesRefreshing once, and the display time is not less than 1s. A555 timer is selected to control an ADC0808 singlechip through an external clock. The 555 timer is an integrated circuit chip and has the advantages of easy use, low price, high reliability and the like.
It should be noted that, the utility model discloses a portable intelligent secondary cable meets following electrical property to the wire device:
1) meanwhile, the number of the accessible cable wires is at least 8, and the expandability is realized;
2) digitally displaying a core wire preset number;
3) the results show a residence time of about 2 seconds (adjustable);
4) the short circuit or open circuit fault alarm signal of the tested core wire is provided;
5) the core wire test mode is that single wires are tested one by one;
6) the wire aligning device is light in structure, easy to carry and simple to operate, and can accurately and quickly complete wire aligning work.
A set of resistance values in actual use is given below: r1Take 1k Ω, R21.9 k.OMEGA.R3Take 2.8k Ω, R4Take 3.9k Ω, R5Take 5.2k Ω, R6Take 6.8k Ω, R7Take 8.8k omega, R8Take 11.33 kq.
In conclusion, through developing a portable intelligent secondary cable to the line device, can insert all heart yearns fast and can observe the core wire number simultaneously at the cable both ends, reduced to the line time by a wide margin. Meanwhile, the alignment device is light in structure, complete in function, simple in operation and capable of accurately and quickly completing alignment work, so that the work efficiency is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (7)
1. Portable intelligent secondary cable is to line device, its characterized in that includes:
the cable far-end numbering device is arranged at the far-end cable and is used for numbering core wires of the tested cable at the far end;
the cable wire aligning device is arranged at the near-end cable and used for measuring the corresponding relation between each core wire and the far end;
the display is connected with the cable wire aligning device and used for displaying the serial numbers of the core wires at the near end;
the input end of the control circuit is connected with the cable butt-joint device, the output end of the control circuit is connected with the display, and the real-time display and refreshing of the core wire number are realized through the control circuit;
and the fault alarm circuit is connected with the cable wire matching device and is used for identifying short circuit and open circuit fault states and giving an alarm to prompt staff.
2. The portable intelligent secondary cable alignment device according to claim 1, wherein: the cable wire-aligning device comprises a near-end receiving voltage circuit and an A/D converter;
one end of the near-end receiving voltage circuit is connected with the cable far-end numbering device, the other end of the near-end receiving voltage circuit is connected with the A/D converter, resistors with different resistance values are arranged at the cable far-end numbering device, the near-end receiving voltage circuit receives different voltages transmitted by the cable, and the A/D converter converts voltage analog quantity into digital quantity and displays the digital quantity on the display.
3. The portable intelligent secondary cable alignment device according to claim 2, wherein: the display adopts a nixie tube;
the cable wire matching device further comprises a decoding circuit, wherein the decoding circuit is connected between the A/D converter and the display, and the decoding circuit is used for decoding the binary codes output by the A/D converter.
4. The portable intelligent secondary cable alignment device according to claim 3, wherein: the nixie tube adopts a common cathode nixie tube and is connected with a CD4511 chip for driving the common cathode nixie tube.
5. The portable intelligent secondary cable alignment device according to claim 2, wherein the a/D converter employs an ADC0808 single chip microcomputer.
6. The portable intelligent secondary cable alignment device as claimed in claim 2, wherein the control circuit employs a 555 timer.
7. The portable intelligent secondary cable alignment device according to claim 1, wherein: the fault alarm circuit comprises a plurality of light emitting diodes with different colors, and the short circuit and the open circuit phenomena in the cable are alarmed and displayed through the plurality of light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020329530.1U CN212301825U (en) | 2020-03-17 | 2020-03-17 | Portable intelligent secondary cable alignment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020329530.1U CN212301825U (en) | 2020-03-17 | 2020-03-17 | Portable intelligent secondary cable alignment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212301825U true CN212301825U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020329530.1U Active CN212301825U (en) | 2020-03-17 | 2020-03-17 | Portable intelligent secondary cable alignment device |
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| Country | Link |
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| CN (1) | CN212301825U (en) |
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- 2020-03-17 CN CN202020329530.1U patent/CN212301825U/en active Active
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