CN202735449U - Portable multifunctional series electric detector - Google Patents
Portable multifunctional series electric detector Download PDFInfo
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- CN202735449U CN202735449U CN 201220203007 CN201220203007U CN202735449U CN 202735449 U CN202735449 U CN 202735449U CN 201220203007 CN201220203007 CN 201220203007 CN 201220203007 U CN201220203007 U CN 201220203007U CN 202735449 U CN202735449 U CN 202735449U
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- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 230000003321 amplification Effects 0.000 claims abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 15
- 230000005674 electromagnetic induction Effects 0.000 claims description 26
- 238000012795 verification Methods 0.000 claims description 9
- 230000005669 field effect Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model relates to a portable multifunctional series electric detector, which is suitable for the detection of the AC-DC mixed connection failure of a substation. The portable multifunctional series electric detector comprises a shell and a contact type electricity testing unit, wherein the contact type electricity testing unit comprises a screwdriver type sensor, a rectifier circuit, first to third amplification and optical alarm circuits and a button switch SB; the rear end of a metal rod of the screwdriver type sensor is connected with an input end of the rectifier circuit, an output end of the rectifier circuit is respectively connected with input ends of the first to third amplification and optical alarm circuits, a battery E is respectively connected with power supply ends of the first to third amplification and optical alarm circuits by the button switch SB. The portable multifunctional series electric detector has advantages of high sensitivity, simple operation, convenient carry-over, accuracy and reliability.
Description
Technical field
The utility model relates to a kind of portable multi-function crosstalk detecting device, is applicable to detect the fault of transformer station's alternating current-direct current hybrid junction.
Background technology
There is the problem of alternating current-direct current hybrid junction in capital construction transformer station; especially 500kV Ultra-high Voltage Substations; secondary cable in protection screen cabinet, terminal box and the convergence control cabinet is various; secondary connection on the terminal row is close and numerous; checking and accepting task amount before putting into operation is large; and particularly important, slightly there is the carelessness impact normally to send electricity, bring hidden danger to the stabilization of power grids.Check and process at present the method for alternating current-direct current hybrid junction, utilize the secondary drawing, to the figure line inspection, the method time and effort consuming.
When measuring with multimeter, the combined-voltage shelves are used also existing problems with: (1) alternating voltage shelves are measured DC voltage, and voltage table might non-metering or doubled than actual DC voltage, and concrete error size is that half-wave or all-wave are relevant with the interior rectification of table.In a word, the value of table is nonsensical.(2) shelves of direct voltage is measured alternating voltage, owing to frequency, can affect the flutter rate of pointer, and long-time use can cause the damage of multimeter.
The utility model content
Technical problem to be solved in the utility model provides a kind of highly sensitive, simple to operate, easy to carry, accurately and reliably portable multi-function crosstalk detecting device.
The utility model adopts following technical scheme:
The utility model comprises housing and contact electrical verification unit, and described contact electrical verification unit comprises screw blade type sensor, rectification circuit, the first to the 3rd amplification and optical alarm circuit and pushbutton switch SB;
The input end of the rear termination rectification circuit of the Metallic rod of described screw blade type sensor, the output terminal of described rectification circuit connects respectively the input end of the first to the 3rd amplifier optical alarm circuit, and battery E connects respectively the power end of the first to the 3rd amplification and optical alarm circuit through pushbutton switch SB.
Described housing is for falling " T " font, and described screw blade type sensor is fixed on down the upper end of " T " font housing.
Crosstalk detecting device described in the utility model also comprises the non-contact type electricity checking unit, and described non-contact type electricity checking unit comprises a pair of electromagnetic induction sheet, alternating voltage amplifier, driving and sound light alarming circuit, single-pole triple-throw (SPTT) switch S A; One end of described a pair of electromagnetic induction sheet is attempted by the input end of described alternating voltage amplifier, the output termination driving of described alternating voltage amplifier and the input end of sound light alarming circuit, described battery E is connected on respectively the power end of alternating voltage amplifier and driving and sound light alarming circuit through single-pole triple-throw (SPTT) switch S A.
Good effect of the present utility model is as follows:
(1) the utility model has improved secondary circuit capital construction checking and accepting efficient greatly, and figure line inspection method is not only made things convenient for but also saves time more in the past the most important thing is more accurate more reliable.Searched in the past a 500kV line switching convergence control cabinet and terminal box whether crosstalk need 2 people/skies, take this crosstalk detecting device after, needs can efficiently be finished 1 people/half a day.Human and material resources and financial resources have greatly been saved.
(2) the utility model also have highly sensitive, easy to operate, easy to carry and characteristics accurately and reliably.
This detecting device is except checking alternating current-direct current serial connection problem, and it also has following purposes:
(1) can judge easily whether 60V～220V AC power cord is charged;
(2) height of alternating voltage in the measurement certain limit;
(3) the convenient broken positions of measuring wire core.
Description of drawings
Accompanying drawing 2 is the circuit theory diagrams of Fig. 1.
Accompanying drawing 3 is the principle calcspar of non-contact type electricity checking unit.
Accompanying drawing 4 is the circuit theory diagrams of Fig. 3.
Fig. 5 is the front view of the utility model housing.
Fig. 6 is the rear view of the utility model housing.
In Fig. 1-6, glass screen cover, 6 pushbutton switches (SB), 7 single-pole triple-throw (SPTT) switches (SA), 8 Self-concentration lighting bulbs (DL), 9 battery case lids, 10 speaker voice giving holes, 11 first light emitting diodes (LED1) of the band of 1 electromagnetic induction sheet, 2 electromagnetic induction sheets, 3 screw blade type sensors, 4 housings, the 5 second to the 4th light emitting diode LD2-LED4 numeral printed words.
Embodiment
Embodiment 1(only comprises contact electrical verification unit, referring to Fig. 1, Fig. 2, Fig. 5 and Fig. 6):
Present embodiment comprises housing 4 and contact electrical verification unit, and described contact electrical verification unit comprises screw blade type sensor 3, rectification circuit, the first to the 3rd amplification and optical alarm circuit and pushbutton switch SB;
The input end of the rear termination rectification circuit of the Metallic rod of described screw blade type sensor 3, the output terminal of described rectification circuit connects respectively the input end of the first to the 3rd amplifier optical alarm circuit, and battery E connects respectively the power end of the first to the 3rd amplification and optical alarm circuit through pushbutton switch SB.
Described portable multi-function crosstalk detecting device is characterized in that described screw blade type sensor 3 is " one " font or " ten " font screwdriver.
Described rectification circuit is comprised of commutation diode D; The positive pole of commutation diode D connects the Metallic rod rear end of described screw blade type sensor 3.
Described the first to the 3rd amplification and optical alarm circuit are comprised of transistor VT4-VT6, potentiometer RW1-RW3, resistance R 4-R6, capacitor C 1-C3 and the second to the 4th LED 2-LED4;
The structure of described the first to the 3rd amplification and optical alarm circuit is identical, and wherein the first amplification and optical alarm circuit are comprised of transistor VT4, potentiometer RW1, resistance R 4, capacitor C 1 and the second LED 2; The base stage of described transistor VT4 connects the negative pole of described commutation diode D through potentiometer RW1, the emitter of described transistor VT4 connects the negative pole of described battery E, and the collector of described transistor VT4 connects the positive pole of described battery E successively through the second LED 2, resistance R 4, pushbutton switch SB;
The base stage of described transistor VT5, VT6 connects respectively the negative pole of described commutation diode through potentiometer RW2, RW3.
Described housing 4 is for falling " T " font, and described screw blade type sensor 3 is fixed on down the upper end of " T " font housing.
The principle of work of embodiment 1 is as follows:
Be about the straight screwdriver 3 of 55mm, both can be used as screwdriver and have used, be used as again the contact probe simultaneously, it can directly contact with electrified body, but housing 4 will guarantee insulation.
After pressing the button switch S B button, screw blade type sensor 3 is contacted with a certain unknown AC power, then alternating current is after commutation diode D rectification, and input first to the 3rd is amplified and sound alarm circuit.According to the height of voltage to be measured, adjust the resistance (carrying out under the power supply disconnection) of RW1, RW2 and RW3, after debugging, if the VT4 conducting, LED2 is bright, then voltage≤the 60V that surveys; If VT4～VT5 conducting, LED2～LED3 is bright, and then the voltage of surveying is about 110V; If VT4～VT6 conducting, LED2～LED4 is bright, then the voltage of surveying be 〉=220V.
Be according to the size of measuring alternating voltage with the glass screen cover 5 of digital printed words, show successively 60V, 110V, three numerical value of 220V, when AC signal during less than 60V, only have the 60V printed words to light, and a little less than the brightness; When AC signal during greater than 220V, 60V, 110V, three printed words of 220V are entirely bright, and brightness is stronger.R4～R6 is the current-limiting resistance of LED2-LED4, with current limit in the 15-20mA ratings.Capacitor C 1～C3 is anti-tampering electric capacity.The resistance of RW1～RW3, R4-R6 is all debugged in the situation that power supply disconnects.
Embodiment 2(had both comprised contact electrical verification unit, comprised again the non-contact type electricity checking unit, saw Fig. 1-6):
It also comprises the non-contact type electricity checking unit to present embodiment as different from Example 1, and described non-contact type electricity checking unit comprises a pair of electromagnetic induction sheet 1, electromagnetic induction sheet 2, alternating voltage amplifier, driving and sound light alarming circuit, single-pole triple-throw (SPTT) switch S A; One end of described a pair of electromagnetic induction sheet 1, electromagnetic induction sheet 2 is attempted by the input end of described alternating voltage amplifier, the output termination driving of described alternating voltage amplifier and the input end of sound light alarming circuit, described battery E is connected on respectively the power end of alternating voltage amplifier and driving and sound light alarming circuit through single-pole triple-throw (SPTT) switch S A.
The structure of described a pair of electromagnetic induction sheet 1, electromagnetic induction sheet 2 is identical, is the copper sheet of 5 * 10 * 0.5mm.
Described alternating voltage amplifier is comprised of N channel field-effect pipe VT1, resistance R 1; That the grid g of described N channel field-effect pipe VT1 connects described a pair of electromagnetic induction sheet 1, electromagnetic induction sheet 2 and connect end, its drain electrode d connects the positive pole of battery E successively through resistance R 1, single-pole triple-throw (SPTT) switch S A, and its source electrode s connects the negative pole of battery E;
Described driving and sound light alarming circuit are comprised of transistor VT2-VT3, resistance R 2-R3, the first LED 1 and loudspeaker HA; The base stage of transistor VT2 meets the drain electrode d of N channel field-effect pipe VT1 through resistance R 1, the collector of transistor VT2 connects the positive pole of battery E through single-pole triple-throw (SPTT) switch S A, the emitter of transistor VT2 connects the base stage of transistor VT3, the emitter of transistor VT3 connects the negative pole of battery E, and the collector of transistor VT3 connects the positive pole of battery E successively through resistance R 3, the first LED 1, loudspeaker HA and single-pole triple-throw (SPTT) switch S A.
Described non-contact type electricity checking unit also comprises lighting circuit, and the power end of described lighting circuit meets battery E through single-pole triple-throw (SPTT) switch S A; Described lighting circuit is comprised of Self-concentration bulb DL.
In the both ends of the horizontal arm that is contained in down " T " font housing lower end of described a pair of electromagnetic induction sheet 1, electromagnetic induction sheet 2 symmetries.
The principle of work of the non-contact type electricity checking unit among the embodiment 2 is as follows:
When a pair of electromagnetic induction sheet during near alternating current-direct current hybrid junction circuit, the alternating magnetic field that alternating voltage produces, act on a pair of electromagnetic induction sheet, be similar to and do the cutting magnetic induction line motion, make on a pair of electromagnetic induction sheet and produce induction electromotive force, so just capture ac voltage signal, a pair of electromagnetic induction sheet from electrified body more close to, sensitiveer, and then the induction electromotive force that produces is larger.
N channel field-effect pipe VT1 is a kind of voltage controlled element, and its input impedance is higher, needs only the variation that the voltage of giving to change at the input end grid just can be controlled output current, the 50Hz power-frequency voltage is changed particularly responsive.When a pair of electromagnetic induction sheet does not have induction electromotive force, VT1 is in zero state partially, because VT1 is depletion type, so saturation conduction state all the time between its drain electrode d and the source electrode s, the VT2 base stage is lower than 0.65V by the bias voltage that R2 obtains, so VT2, VT3 are in cut-off state.When a pair of electromagnetic induction sheet is sensed faint alternating voltage, after amplifying through VT1, the 50Hz ac voltage signal that will amplify from its d output that drains, thus make VT2, VT3 also with constantly conducting of same frequency and cut-off.
When transistor VT3 conducting, order about loudspeaker HA and send continuous sound, and light LED1, remind people to note, a pair of electromagnetic induction sheet place has detected alternating voltage and has existed.
When single-pole triple-throw (SPTT) switch S A switch is got to 1 position, start the non-contact electricity testing unit; SA gets to 2 position, is in closed condition, not power consumption of detecting device; When SA gets to 3 position, start lighting loop, both can be used at night the short time illumination, can when the maintenance electric device, illuminate secondary circuit again.
The utility model can measure whether it charged apart from tested AC power cord 2cm～15cm place.When using its non-contact electricity testing function, apart from terminal row secondary connection 6cm place, slowly mobile from top to bottom along terminal row, when sound and light alarm, illustrate to have alternating voltage herein, whether compare line this moment again No.1 consistent with drawing, and use the other end of this detecting device, start the contact electroscope function, judge further which root cable core is charged and measure with the amplitude of alternating voltage.When detect to exchange, whether direct current during hybrid junction, disconnect each DC loop sky and open, and only closes the ac circuit sky and open, such detection effect is better.
Can also detect the broken end position of wire core with this detecting device, as long as pass to 220V voltage to tested core, that this detecting device is close by survey line, make loudspeaker sounding, LED 1 luminous, progressively mobile along this line length direction again, on one side mobile, check on one side.The place that LED1 extinguishes is exactly the determination portion position of disconnected core.
Claims (10)
1. portable multi-function crosstalk detecting device, it is characterized in that comprising housing (4) and contact electrical verification unit, described contact electrical verification unit comprises screw blade type sensor (3), rectification circuit, the first to the 3rd amplification and optical alarm circuit and pushbutton switch SB;
The input end of the rear termination rectification circuit of the Metallic rod of described screw blade type sensor (3), the output terminal of described rectification circuit connects respectively the input end of the first to the 3rd amplifier optical alarm circuit, and battery E connects respectively the power end of the first to the 3rd amplification and optical alarm circuit through pushbutton switch SB.
2. a kind of portable multi-function crosstalk detecting device according to claim 1 is characterized in that described screw blade type sensor (3) is " one " font or " ten " font screwdriver.
3. a kind of portable multi-function crosstalk detecting device according to claim 1 and 2 is characterized in that described rectification circuit is comprised of commutation diode D; The positive pole of commutation diode D connects the Metallic rod rear end of described screw blade type sensor (3).
4. a kind of portable multi-function crosstalk detecting device according to claim 3 is characterized in that described the first to the 3rd amplification and optical alarm circuit are comprised of transistor VT4-VT6, potentiometer RW1-RW3, resistance R 4-R6, capacitor C 1-C3 and the second to the 4th LED 2-LED4;
The structure of described the first to the 3rd amplification and optical alarm circuit is identical, and wherein the first amplification and optical alarm circuit are comprised of transistor VT4, potentiometer RW1, resistance R 4, capacitor C 1 and the second LED 2; The base stage of described transistor VT4 connects the negative pole of described commutation diode D through potentiometer RW1, the emitter of described transistor VT4 connects the negative pole of described battery E, and the collector of described transistor VT4 connects the positive pole of described battery E successively through the second LED 2, resistance R 4, pushbutton switch SB;
The base stage of described transistor VT5, VT6 connects respectively the negative pole of described commutation diode through potentiometer RW2, RW3.
5. a kind of portable multi-function crosstalk detecting device according to claim 4 is characterized in that described housing (4) for falling " T " font, and described screw blade type sensor (3) is fixed on down the upper end of " T " font housing.
6. a kind of portable multi-function crosstalk detecting device according to claim 1 or 5, it is characterized in that described crosstalk detecting device also comprises the non-contact type electricity checking unit, described non-contact type electricity checking unit comprises a pair of electromagnetic induction sheet (1,2), alternating voltage amplifier, driving and sound light alarming circuit and single-pole triple-throw (SPTT) switch S A; One end of described a pair of electromagnetic induction sheet (1,2) is attempted by the input end of described alternating voltage amplifier, the output termination driving of described alternating voltage amplifier and the input end of sound light alarming circuit, described battery E is connected on respectively the power end of alternating voltage amplifier and driving and sound light alarming circuit through single-pole triple-throw (SPTT) switch S A.
7. a kind of portable multi-function crosstalk detecting device according to claim 6 is characterized in that the structure of described a pair of electromagnetic induction sheet (1,2) is identical, is the copper sheet of 5 * 10 * 0.5mm.
8. a kind of portable multi-function crosstalk detecting device according to claim 7 is characterized in that described alternating voltage amplifier is comprised of N channel field-effect pipe VT1, resistance R 1; That the grid g of described N channel field-effect pipe VT1 connects described a pair of electromagnetic induction sheet (1,2) and connect end, its drain electrode d connects the positive pole of battery E successively through resistance R 1, single-pole triple-throw (SPTT) switch S A, and its source electrode s connects the negative pole of battery E;
Described driving and sound light alarming circuit are comprised of transistor VT2-VT3, resistance R 2-R3, the first LED 1 and loudspeaker HA; The base stage of transistor VT2 meets the drain electrode d of N channel field-effect pipe VT1 through resistance R 1, the collector of transistor VT2 connects the positive pole of battery E through single-pole triple-throw (SPTT) switch S A, the emitter of transistor VT2 connects the base stage of transistor VT3, the emitter of transistor VT3 connects the negative pole of battery E, and the collector of transistor VT3 connects the positive pole of battery E successively through resistance R 3, the first LED 1, loudspeaker HA and single-pole triple-throw (SPTT) switch S A.
9. a kind of portable multi-function crosstalk detecting device according to claim 8 is characterized in that described non-contact type electricity checking unit also comprises lighting circuit, and the power end of described lighting circuit meets battery E through single-pole triple-throw (SPTT) switch S A; Described lighting circuit is comprised of Self-concentration bulb DL.
10. a kind of portable multi-function crosstalk detecting device according to claim 9 is characterized in that in the both ends of the horizontal arm that is contained in down " T " font housing lower end that described a pair of electromagnetic induction sheet (1,2) is symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220203007 CN202735449U (en) | 2012-05-08 | 2012-05-08 | Portable multifunctional series electric detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220203007 CN202735449U (en) | 2012-05-08 | 2012-05-08 | Portable multifunctional series electric detector |
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| Publication Number | Publication Date |
|---|---|
| CN202735449U true CN202735449U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220203007 Expired - Fee Related CN202735449U (en) | 2012-05-08 | 2012-05-08 | Portable multifunctional series electric detector |
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| Country | Link |
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| CN (1) | CN202735449U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662124A (en) * | 2012-05-08 | 2012-09-12 | 河北省电力公司超高压输变电分公司 | Portable type multifunctional serial electric detector |
| CN107901791A (en) * | 2017-11-21 | 2018-04-13 | 中车株洲电力机车有限公司 | A kind of multiple feed return circuit detection method, system and device |
-
2012
- 2012-05-08 CN CN 201220203007 patent/CN202735449U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662124A (en) * | 2012-05-08 | 2012-09-12 | 河北省电力公司超高压输变电分公司 | Portable type multifunctional serial electric detector |
| CN107901791A (en) * | 2017-11-21 | 2018-04-13 | 中车株洲电力机车有限公司 | A kind of multiple feed return circuit detection method, system and device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20180508 |