CN205049681U - Multicore cable insulation , short -circuit detection device - Google Patents

Multicore cable insulation , short -circuit detection device Download PDF

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Publication number
CN205049681U
CN205049681U CN201520751708.0U CN201520751708U CN205049681U CN 205049681 U CN205049681 U CN 205049681U CN 201520751708 U CN201520751708 U CN 201520751708U CN 205049681 U CN205049681 U CN 205049681U
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CN
China
Prior art keywords
diode
circuit
electric capacity
power supply
resistance
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Withdrawn - After Issue
Application number
CN201520751708.0U
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Chinese (zh)
Inventor
祁方晓
岳凯
刘平
温江华
李文书
王芳芳
汪伟
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China Academy of Launch Vehicle Technology CALT
Changzhi Qinghua Machinery Factory
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China Academy of Launch Vehicle Technology CALT
Changzhi Qinghua Machinery Factory
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Priority to CN201520751708.0U priority Critical patent/CN205049681U/en
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Abstract

The utility model discloses (B, ) one (b) plants multicore cable insulation, short -circuit detection device, belongs to intelligent detecting instrument's technical field, the problem of the technique is solved for: the utility model provides a device of insulation of equipment, short -circuit fault detection is accomplished to the accuracy fast, the technical scheme who adopts does: a multicore cable insulation, short -circuit detection device, includes multicore socket, control circuit board, control button, data display unit, 5V integration switching power supply and DC power supply circuit, multicore socket, control button, data display unit and DC power supply circuit link to each other with control circuit board respectively, and it is continuous with the cable conductor of being surveyed the product that the multicore socket passes through the switchover control box, control circuit board includes: microprocessor, analog switch circuit and AD converter, analog switch circuit's switching point links to each other with the binding post of multicore socket, and analog switch circuit links to each other with microprocessor's, and it is continuous with microprocessor's data input end that analog switch circuit passes through the AD converter, and microprocessor links to each other with the data display unit.

Description

A kind of polycore cable insulation, short-circuit detecting device
Technical field
The utility model relates to oneplant polycore cable insulation, short-circuit detecting device, belong to the technical field of intellectualized detection instrument and meter.
Background technology
The insulating property of current testing product electrical equipment, mainly completed by the megohmmeter of hand-rail type or digital megohmmeter, manual megohmmeter is powered by hand generator, by pointer scale dish display insulation values, digital megohmmeter is made up of Large and middle scale IC, detected by test pencil docking measuring junction, testing result is shown by liquid crystal display, compared with the megohmmeter of hand-rail type, digital megohmmeter eliminates the manpower acting of hand megohmmeter, and measurement result has the clear and intuitive advantage of display.
But, in product Insulation test, because the cable type quantity of test product is more, usually tens kinds even tens kinds are had, cable core and test point various, measure one by one with hand-rail type or digital megohmmeter and waste time and energy, inefficiency, and the situations such as test leakage, by mistake survey, duplicate measurements easily occur.
Utility model content
The utility model overcome prior art exist deficiency, technical matters to be solved is: provide a kind of can quick and precisely finishing equipment insulation, short trouble detect device.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of polycore cable insulation, short-circuit detecting device, comprise multi-core socket, control circuit board, control knob, data display equipment, 5V integral switching power source and DC power supply circuit;
Described multi-core socket, control knob, data display equipment and DC power supply circuit are connected with described control circuit board respectively, multi-core socket, control knob, data display equipment, control circuit board are connected with described 5V integral switching power source respectively, and described multi-core socket is connected with the cable of test product by switching control enclosure;
Described control circuit board comprises: microprocessor, analog switching circuit and A/D converter; The switching point of described analog switching circuit is connected with the connection terminal of multi-core socket, described analog switching circuit is connected with microprocessor, the I/O port of described analog switching circuit is connected by the data input pin of A/D converter with described microprocessor, and described microprocessor is connected with data display equipment.
In the present invention, described analog switching circuit comprises: the first analog switch chip group and the second analog chip switches set, described first analog switch chip group and the second analog chip switches set all comprise 4 analog switch chips, and described first analog switch chip group and the second analog chip switches set all include 64 switching points; 64 test points that each switching point of described first analog switch chip group is corresponding with on switching control enclosure 10 respectively and after connecing each switching point of the first analog switch chip group connect.
The circuit structure of described DC power supply circuit is: comprising: electric capacity C, resistance R1, electric capacity C3, one end of described electric capacity C1 one end of connecting resistance R1, be connected with the zero line of external 220V AC power behind one end of electric capacity C3, the other end of described electric capacity C1 and after the other end of connecting resistance R1 with the negative pole of diode D1, the positive pole of diode D2 is connected, the positive pole of described diode D1 and after connecing the positive pole of diode D4 with one end of electric capacity C5, the negative pole of light emitting diode VD1, the 100V power supply of DC power supply circuit exports earth terminal and is connected, the positive pole of described diode D2 and after connecing the negative pole of diode D3 with the other end of electric capacity C5, the negative pole of diode D5, the 100V power supply output plus terminal of DC power supply circuit is connected, and the positive pole of described diode D5 is connected with the positive pole of light emitting diode VD1, the positive pole of described diode D3 and after connecing the negative pole of diode D4 with one end of electric capacity C2, one end of resistance R2 is connected, the other end of described electric capacity C2 and after connecing the live wire of external 220V AC power with the other end of resistance R2, the negative pole of diode D6, one end of electric capacity C4, the collector of triode VT1, one end of resistance R4 is connected, the other end of described electric capacity C3 is also connected with the negative pole of diode D7 after connecing the positive pole of diode D6, with one end of electric capacity C6 after the other end of the positive pole shunt-wound capacitance C4 of described diode D7, the positive pole of diode D8, one end of resistance R6, the other end of electric capacity C7, the 500V power supply of DC power supply circuit exports earth terminal and is connected, the other end of described electric capacity C6 and after connecing the base stage of triode VT1 with the collector of triode VT2, the other end of resistance R4 is connected, the emitter of described triode VT1 and behind one end of connecting resistance R3 with one end of resistance R5, one end of electric capacity C7, the 500V power supply output plus terminal of DC power supply circuit is connected, the emitter of described triode VT2 and after the other end of connecting resistance R3 diode D8 negative pole be connected, the base stage of described triode VT2 the other end of connecting resistance R5, the other end of resistance R6.
The model of described microprocessor is 8 AT89S52 single board computer.
The model of described analog switch chip is 16 path analoging switch CD4067.
The utility model compared with prior art has following beneficial effect:
1, the utility model comprises multi-core socket, control circuit board, control knob, data display equipment, 5V integral switching power source and DC power supply circuit; Be connected with the cable of test product by described multi-core socket, switching control enclosure, and completing the autonomous Polling fast to the insulation between cable core, between heart yearn and shell, short trouble by control circuit board, testing result is directly shown by data display equipment; This apparatus structure is simple, practical.
2, in the utility model, the Insulation test voltage of 100V or 500V is selected by DC power supply circuit, and insulating resistance value needs can being selected to reach according to the testing requirement of specific product, insulating resistance value, Insulation test voltage and testing result value are all shown by data display equipment, intuitive display result, greatly facilitates the work efficiency of staff.
3. in the utility model, the cable detection of maximum 63 cores can be completed, can be docked with the cable of most of test product by switching control enclosure, reach the requirement containing the insulation of product major part and short-circuit detecting content, highly versatile.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described further.
Fig. 1 is electrical block diagram of the present utility model;
Fig. 2 is the circuit connection diagram of the DC power supply circuit in the utility model;
Fig. 3 is the structural representation of the switching control enclosure in the utility model;
Fig. 4 is the front elevation of the pick-up unit in the utility model;
Wherein: 1 is multi-core socket, 2 is control circuit board, and 3 is control knob, and 4 is data display equipment, and 5 is 5V integral switching power source, and 6 is DC power supply circuit, and 7 is microprocessor, and 8 is analog switching circuit, and 9 is A/D converter, and 10 is switching control enclosure.
Embodiment
As shown in Figures 1 to 4, a kind of polycore cable insulation, short-circuit detecting device, comprise multi-core socket 1, control circuit board 2, control knob 3, data display equipment 4,5V integral switching power source 5 and DC power supply circuit 6; Described multi-core socket 1, control knob 3, data display equipment 4 are connected with described control circuit board respectively with DC power supply circuit 6, multi-core socket 1, control knob 3, data display equipment 4, control circuit board 2 are connected with described 5V integral switching power source 5 respectively, and described multi-core socket 1 is connected with the cable of test product by switching control enclosure 7.
In the present embodiment, described multi-core socket 1 is connected with the cable of test product by switching control enclosure 7, can realize the insulation of product facility polytype cable and the detection of short trouble to needing test; Described 5V integral switching power source 5 is mainly used in powering to the multi-core socket 1 of this pick-up unit, control knob 3, data display equipment 4, control circuit board 2, and described 5V integral switching power source 5 can be that volume is little, lightweight, power consumption is little, efficiency is high, the integral switching power source Switching Power Supply of voltage stabilization.
Particularly, described control circuit board 2 comprises: microprocessor 7, analog switching circuit 8 and A/D converter 9; The switching point of described analog switching circuit 8 is connected with the connection terminal of multi-core socket 1, described analog switching circuit 8 is connected with microprocessor 7, the I/O port of described analog switching circuit 8 is connected with the data input pin of described microprocessor 7 by A/D converter 9, and described microprocessor 7 is connected with data display equipment 4.
Further, described analog switching circuit 8 comprises: the first analog switch chip group and the second analog chip switches set, described first analog switch chip group and the second analog chip switches set all comprise 4 analog switch chips, and described first analog switch chip group and the second analog chip switches set all include 64 switching points; 64 test points that each switching point of described first analog switch chip group is corresponding with on switching control enclosure 7 respectively and after connecing each switching point of the first analog switch chip group connect, 64 above-mentioned test points, can comprise the shell test point of test product Insulation test and 1 to 63 point of cable core.
In the present embodiment, 8 analog switch chips can be controlled by microprocessor 7 to complete break-make in turn between maximum 63 core cable cores and between heart yearn and shell and detect, described high-precision A/D converter 9 is by the connection with each analog switch chip in analog switching circuit 8, complete the collection to test voltage signal and conversion, and the signal after conversion is sent to single-chip microcomputer and processes;
Particularly, three grades of locking press buttons can be provided with between described DC power supply circuit 6 and analog switching circuit 8, the switching of 100V and 500V VDCT volts ,direct-current ,test can be completed by the normally-open normally-close contact controlling three grades of locking press buttons, after current limliting, VDCT volts ,direct-current ,test is introduced in control circuit board 2, and show test voltage value by data display equipment 4; And by the operation to control knob 3, complete insulation resistance and Insulation test magnitude of voltage setting and on data display equipment 4 display setting magnitude of voltage; Described control knob 3 can be the non-self-lock-ing button that model is LA39-F11/y;
Further, more directly perceived for ensureing test result, described data display equipment 4 in this device can be the LCDs of band Chinese word library, described LCDs is communicated with microprocessor 7 by serial line interface, accepts the various display information that microprocessor 7 transmits, and four lines can be divided to show, the first row display voltage setting value, second row display insulation setting value, the third line display testing result, fourth line shows the combination of abnormal heart yearn period.
As shown in Figure 2, according to the needs of testing and control, alternating current 220V mains-supplied can be converted to corresponding direct current supply and be converted to corresponding direct current supply, particularly, described DC power supply circuit 6 can produce 100V and 500V stable DC voltage by 220V alternating current by step-down rectifying circuit and voltage doubling rectifing circuit simultaneously, and the circuit structure of described DC power supply circuit 6 is: comprising: electric capacity C, resistance R1, electric capacity C3;
One end of described electric capacity C1 one end of connecting resistance R1, be connected with the zero line of external 220V AC power behind one end of electric capacity C3, the other end of described electric capacity C1 and after the other end of connecting resistance R1 with the negative pole of diode D1, the positive pole of diode D2 is connected, the positive pole of described diode D1 and after connecing the positive pole of diode D4 with one end of electric capacity C5, the negative pole of light emitting diode VD1, the 100V power supply of DC power supply circuit 6 exports earth terminal and is connected, the positive pole of described diode D2 and after connecing the negative pole of diode D3 with the other end of electric capacity C5, the negative pole of diode D5, the 100V power supply output plus terminal of DC power supply circuit 6 is connected, and the positive pole of described diode D5 is connected with the positive pole of light emitting diode VD1, the positive pole of described diode D3 and after connecing the negative pole of diode D4 with one end of electric capacity C2, one end of resistance R2 is connected, the other end of described electric capacity C2 and after connecing the live wire of external 220V AC power with the other end of resistance R2, the negative pole of diode D6, one end of electric capacity C4, the collector of triode VT1, one end of resistance R4 is connected, the other end of described electric capacity C3 is also connected with the negative pole of diode D7 after connecing the positive pole of diode D6, with one end of electric capacity C6 after the other end of the positive pole shunt-wound capacitance C4 of described diode D7, the positive pole of diode D8, one end of resistance R6, the other end of electric capacity C7, the 500V power supply of DC power supply circuit 6 exports earth terminal and is connected, the other end of described electric capacity C6 and after connecing the base stage of triode VT1 with the collector of triode VT2, the other end of resistance R4 is connected, the emitter of described triode VT1 and behind one end of connecting resistance R3 with one end of resistance R5, one end of electric capacity C7, the 500V power supply output plus terminal of DC power supply circuit 6 is connected, the emitter of described triode VT2 and after the other end of connecting resistance R3 diode D8 negative pole be connected, the base stage of described triode VT2 the other end of connecting resistance R5, the other end of resistance R6.
The model of described microprocessor 7 is 8 AT89S52 single board computer.
The model of described analog switch chip is 16 path analoging switch CD4067.
To sum up, a kind of polycore cable insulation, short-circuit detecting device, highly versatile, portability are strong, use is flexible, it is rapid to detect, display is directly clear, the testing using conventional instrument dozens of minutes even to complete for several hours shortens to even several seconds a few minutes, substantially increase efficiency and the accuracy of detection, be highly suitable for equipment cable kind quantity large, the testing process that measured point is various, coordinate different switching control enclosurees, the most insulation of different product electrical equipment and short-circuit detecting content can be contained, have a good application prospect.
Above embodiment of the present utility model is explained in detail, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from the utility model aim.

Claims (5)

1. polycore cable insulation, a short-circuit detecting device, is characterized in that: comprise multi-core socket (1), control circuit board (2), control knob (3), data display equipment (4), 5V integral switching power source (5) and DC power supply circuit (6);
Described multi-core socket (1), control knob (3), data display equipment (4) are connected with described control circuit board respectively with DC power supply circuit (6), multi-core socket (1), control knob (3), data display equipment (4), control circuit board (2) are connected with described 5V integral switching power source (5) respectively, and described multi-core socket (1) is connected with the cable of test product by switching control enclosure (10);
Described control circuit board (2) comprising: microprocessor (7), analog switching circuit (8) and A/D converter (9); The switching point of described analog switching circuit (8) is connected with the connection terminal of multi-core socket (1), described analog switching circuit (8) is connected with microprocessor (7), the I/O port of described analog switching circuit (8) is connected with the data input pin of described microprocessor (7) by A/D converter (9), and described microprocessor (7) is connected with data display equipment (4).
2. a kind of polycore cable insulation according to claim 1, short-circuit detecting device, it is characterized in that: described analog switching circuit (8) comprising: the first analog switch chip group and the second analog chip switches set, described first analog switch chip group and the second analog chip switches set all comprise 4 analog switch chips, and described first analog switch chip group and the second analog chip switches set all include 64 switching points; 64 test points that each switching point of described first analog switch chip group is corresponding with on switching control enclosure 10 respectively and after connecing each switching point of the first analog switch chip group connect.
3. a kind of polycore cable insulation according to claim 1, short-circuit detecting device, is characterized in that: the circuit structure of described DC power supply circuit (6) is: comprising: electric capacity C1, resistance R1, electric capacity C3, one end of described electric capacity C1 one end of connecting resistance R1, be connected with the zero line of external 220V AC power behind one end of electric capacity C3, the other end of described electric capacity C1 and after the other end of connecting resistance R1 with the negative pole of diode D1, the positive pole of diode D2 is connected, the positive pole of described diode D1 and after connecing the positive pole of diode D4 with one end of electric capacity C5, the negative pole of light emitting diode VD1, the 100V power supply of DC power supply circuit (6) exports earth terminal and is connected, the positive pole of described diode D2 and after connecing the negative pole of diode D3 with the other end of electric capacity C5, the negative pole of diode D5, the 100V power supply output plus terminal of DC power supply circuit (6) is connected, and the positive pole of described diode D5 is connected with the positive pole of light emitting diode VD1, the positive pole of described diode D3 and after connecing the negative pole of diode D4 with one end of electric capacity C2, one end of resistance R2 is connected, the other end of described electric capacity C2 and after connecing the live wire of external 220V AC power with the other end of resistance R2, the negative pole of diode D6, one end of electric capacity C4, the collector of triode VT1, one end of resistance R4 is connected, the other end of described electric capacity C3 is also connected with the negative pole of diode D7 after connecing the positive pole of diode D6, with one end of electric capacity C6 after the other end of the positive pole shunt-wound capacitance C4 of described diode D7, the positive pole of diode D8, one end of resistance R6, the other end of electric capacity C7, the 500V power supply of DC power supply circuit (6) exports earth terminal and is connected, the other end of described electric capacity C6 and after connecing the base stage of triode VT1 with the collector of triode VT2, the other end of resistance R4 is connected, the emitter of described triode VT1 and behind one end of connecting resistance R3 with one end of resistance R5, one end of electric capacity C7, the 500V power supply output plus terminal of DC power supply circuit (6) is connected, the emitter of described triode VT2 and after the other end of connecting resistance R3 diode D8 negative pole be connected, the base stage of described triode VT2 the other end of connecting resistance R5, the other end of resistance R6.
4. a kind of polycore cable insulation according to claim 1, short-circuit detecting device, is characterized in that: the model of described microprocessor (7) is 8 AT89S52 single board computer.
5. a kind of polycore cable insulation according to claim 2, short-circuit detecting device, is characterized in that: the model of described analog switch chip is 16 path analoging switch CD4067.
CN201520751708.0U 2015-09-25 2015-09-25 Multicore cable insulation , short -circuit detection device Withdrawn - After Issue CN205049681U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105223461A (en) * 2015-09-25 2016-01-06 长治清华机械厂 A kind of polycore cable insulation, short-circuit detecting device and method
CN109725243A (en) * 2018-11-16 2019-05-07 湖北江山重工有限责任公司 Multicore cable insulating properties self-operated measuring unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105223461A (en) * 2015-09-25 2016-01-06 长治清华机械厂 A kind of polycore cable insulation, short-circuit detecting device and method
CN109725243A (en) * 2018-11-16 2019-05-07 湖北江山重工有限责任公司 Multicore cable insulating properties self-operated measuring unit
CN109725243B (en) * 2018-11-16 2020-09-29 湖北江山重工有限责任公司 Multi-core cable insulation automatic measuring device

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Granted publication date: 20160224

Effective date of abandoning: 20180511