CN87208317U - Detecting device for electricity leakage and illicit electricity using - Google Patents
Detecting device for electricity leakage and illicit electricity using Download PDFInfo
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- CN87208317U CN87208317U CN 87208317 CN87208317U CN87208317U CN 87208317 U CN87208317 U CN 87208317U CN 87208317 CN87208317 CN 87208317 CN 87208317 U CN87208317 U CN 87208317U CN 87208317 U CN87208317 U CN 87208317U
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Abstract
The utility model relates to a detecting device for electricity leakage and illicit electricity using. The utility model is formed by that plier-shaped current mutual inductors of consistent performance are respectively arranged on the top ends of two insulation inclined rods of a Y-shaped insulation rod; an amperometer is arranged on an insulation connecting tube; using the detecting device, detecting personnel can stand on a ground to detect the size of the alternating current in two overhead service lines and the difference value of the two lines of the alternating current and can accurately control the condition of the electric power consumption, the electrical leakage and the electric larceny of the users consequently. The utility model has the advantages of simple structure, high sensitivity and safety and can improve the work efficiency of detecting electrical leakage and electric larceny.
Description
The present invention relates to alternating current size in a kind of energy measurement trolley wire, particularly energy measurement compares the electric instrument that two velamens are surveyed alternating current difference in the pole line.
There is the individual user to ignore national electricity consumption rules and regulations now, takes various means stealings violating the regulations.Cause a large amount of energy loss to country every year.Chang Yong stealing electricity method has three kinds according to investigations: the wiring before the watt-hour meter inlet wire that has (the general abbreviation shown preceding wiring); The plug in short-circuit line on watt-hour meter that has; Have with live wire on the power lead.A ground wire (generally being called for short a line one ground) way stealing is installed voluntarily.Preceding two kinds of stealing electricity methods are examined discovery easily.Inlet wire and watt-hour meter way such as pack in the box of hanging lead sealing prevented stealing in also can taking to manage.Keep away but the third stealing electricity method is relatively more latent.Easy-to-search, particularly some stealing family are not connected on ground wire on the steam heating pipe, insert in the ground on the running water pipe or by metal object, all belong to the defective ground wire of breaking rules and regulations, and are easy to cause oneself or neighbours personnel electric shock accidents.
Existingly do not disconnect electric wire to measure the instrument of alternating current be to use clamp on amperemeter, but the testing staff can't measure alternating current in the service drop with clamp on amperemeter again on the ground out of doors.More can not detect the difference of alternating current in two house lead in simultaneously.
Task of the present invention provides a kind of outdoor electric leakage stealing detector.The testing staff stands in ground can not disconnect the difference that electric wire detects alternating current in the size of alternating current in the service drop and two house lead in instrument of the present invention.Thereby can check out the power consumption of electricity consumer and electric leakage, stealing situation.
Electric leakage stealing detector of the present invention is to thoroughly do away with edge brace top at two of a Y shape insulating bar split core type current transformer of a performance unanimity respectively is installed.The output of coil is drawn to get off by cable on two split core type current transformers.Be connected on the reometer in the insulation adapter, can control the opening and closing of split core type current transformer jaw by guiding to following insulation backguy.
Y shape insulating bar is made up of hyphen bar, two insulation braces and the adapter of insulating.The hyphen bar is connected by flexibly connecting axle with the insulation brace, is fixed by wing nut.Hyphen bar center is taken over following insulation and is connected.Each insulation brace can be spent angle by vertically laterally rotating 0～180 as required, and can also be fastening by two wing nut institutes that flexibly connect on the axle.
The pincerlike iron core that split core type current transformer is made up of movable core and secured core, the coil on the secured core, insulation wire-hanging hook, spring, insulation backguy, insulation shell and illuminating lamp are formed.Split core type current transformer part in its structure, principle and effect and the general clamp on amperemeter is basic identical.One of difference is to also have an insulation wire-hanging hook that connects together with insulation shell in the jaw of pincerlike iron core, in measurement, make it tangle tested lead, allow tested lead fixed, with the accuracy that guarantees to measure at the jaw central part of split core type current transformer.Two of difference is to thoroughly do away with one of edge backguy with one to be fixed on movable core insulation handle lower end, and the cable-through hole that spring and insulation shell are passed in the other end draws down by the insulation adapter again.Straining or unclamp the insulation backguy can make the jaw of pincerlike iron core open or closure.An illuminating lamp that uses when specializing in night time operation is installed on the insulation shell in jaw.
Reometer is made up of sensitive galvanometer and metering circuit.Metering circuit is made up of input plug socket, shunt resistance, Gear Select Switch, sensitivity selecting switch, operational amplifier, zero potentiometer, bridge rectifier circuit, sheet lighting lamp, lighting lamp power switch, gear pilot lamp and power supply.The output current of two split core type current transformers inserts reometer by cable and plugs and sockets, the antiphase series circuit is formed in two clamp current transformer coil outputs, be connected on the Gear Select Switch by shunt resistance, make it to realize three kinds of states of left line, right line, two wires difference current measurement, every kind of measurement state divides 0～10 peace, 0～50 peace, 0～100 peace third gear again.Gear Select Switch output is connected on the sensitivity selecting switch, can select I * 1 grade, directly crossover formula rectification circuit and sensitive galvanometer by sensitivity selecting switch; Also can select the sensitive gear of I/10, allow the output of gear selector switch receive the input end of operational amplifier, after amplifying, remove bridge rectifier circuit and sensitive galvanometer again.Make each gear measure sensitivity and improve 10 times, the range of I/10 state is 0～1 peace, 0～5 peace, 0～10 peace.At this moment the I/10 pilot lamp is bright.
Left and right line current measurement is an electric current of measuring the left side or the output of the right split core type current transformer coil, and it is identical with the measuring principle of general clamp meter.The electric current difference measurement of two wires, the left and right sides is the effect of the output current of two split core type current transformer coils being connected, is equivalent to a zero sequence differential current transformer by antiphase.If electric current equates in tested two service drops, because of left and right two line current directions are opposite, two coil output currents mutually offset mutually on the contrary because of phase place.So the total output current in antiphase series connection back is zero.Promptly there are not electric leakage, stealing electricity phenomenon.If electric current is unequal in tested two service drops when a line one ground mode stealing is arranged (if any live wire electric leakage or), two total output currents in split core type current transformer coil antiphases series connection back are the two differences.Just can measure the difference of alternating current in two lines through metering circuit, thereby can measure electric leakage, the stealing situation of electricity consumer exactly.
Electric leakage stealing detector of the present invention is simple in structure, highly sensitive, safe and reliable, the testing staff stands in size and the difference that two alternating currents in the service drop just can be detected in ground, thereby can grasp the power consumption and the electric leakage stealing situation of electricity consumer more exactly, improve detection efficiency greatly.
The present invention is described in further detail below with reference to accompanying drawing.
Fig. 1 is the view of a kind of concrete structure of the present invention.
Fig. 2 is an electrical schematic diagram of the present invention.
The best is executed example and is seen accompanying drawing 1 and accompanying drawing 2.Electric leakage stealing detector of the present invention by two insulation brace (6) tops of a Y shape insulating bar (2) split core type current transformer (8) of two performance unanimities is installed and the reometer (1) in the insulation adapter (3) is formed.
The pincerlike iron core that split core type current transformer (8) is connected to form by movable axis by movable core (9) and secured core (10), insulation wire-hanging hook (11), coil (13), insulation shell (14), illuminating lamp (12), spring (7), insulation backguy (15), connection cable (16) are formed.Movable core (9) and secured core (10) are all moulded casting last layer 1～3 millimeters thick, withstand voltage 5000 volts of above insulation courses on the surface except that the jaw end face.Movable core (9) lower end also has one and insulation course to mould insulation handle cast in block.The coil (13) that one group and core insulation are arranged on the secured core (10) has an insulation wire-hanging hook (11) in the jaw of pincerlike iron core.Insulation wire-hanging hook (11) and insulation shell (14) are moulded cast solid, and its back side closely is connected with the inboard insulation course of secured core (10).A spring (7) is installed between the insulation handle of movable core (9) and insulation shell (14), under the effect of spring (7), is made the jaw tight closure.(15) one of backguys of insulation are fixed on the place of the insulation handle mounting spring (7) of movable core (9), and the other end is passed cable-through hole, hyphen bar (4), insulation adapter (3) on spring (7) and the insulation shell (14) and gone below guiding to.Straining or unclamp insulation backguy (15) can make the jaw of split core type current transformer (8) open or closure.The insulation shell (14) that is connected the place, base angle at insulation wire-hanging hook (11) with secured core (10) is gone up an installation illuminating lamp (12).
Y shape insulating bar (2) thoroughly does away with edge brace (6), hyphen bar (4), coupling shaft (5) and 2-5 joint insulation adapter (3) by two and forms.Every eradication edge brace (6) can be by vertically laterally rotating 0-180 degree angle, and the wing nut institute that can also be connected on the axle (5) is fastening.(3) are taken in each joint insulation, the hyphen bar can connect and take apart between (4).
Reometer (1) is made up of sensitive galvanometer (20) and metering circuit.Metering circuit is made up of plugs and sockets (17), shunt resistance (28), Gear Select Switch (25), sensitivity selecting switch (22), operational amplifier (29), zero potentiometer (27), bridge rectifier circuit (30), sheet lighting lamp (18), lighting lamp power switch (19), difference pilot lamp (21), left line pilot lamp (26), right line pilot lamp (24) and I/10 pilot lamp (23).
Insulation brace (6), insulation are taken over (3) length between 20-60 centimetre, various insulating bars, pipe, layer, shell etc. mainly insulating bodies is withstand voltage all should be more than 5 kilovolts, safe in utilization to guarantee.
Claims (10)
1, a kind of instrument of the measurement alternating current of being made up of insulating bar, split core type current transformer and reometer is characterized in that on the top of two insulation braces [6] of a Y shape insulating bar [2] split core type current transformer [8] that performance is consistent being installed respectively, insulation wire-hanging hook [11], insulation backguy [15] and illuminating lamp [12] are installed on split core type current transformer [8], insulation take over [3] go up install the left line of an energy measurement, right line and about the alternating current ammeter [1] of two line current differences.
2, it is characterized in that by the described instrument of claim 1 Y shape insulating bar (2) thoroughly does away with edge brace (6), hyphen bar (4), flexible connection axle (5) and insulation adapter (3) by two and forms, two thoroughly do away with edge brace (6) connects by flexibly connecting axle (5) at hyphen bar (4) two ends, taking over (3) with insulation in the middle of the hyphen bar (4) connects, two thoroughly do away with edge brace (6) can laterally rotate 0-180 degree angle from vertical position, and the wing nut that can also be connected on the axle (5) is fixed.
3, instrument according to claim 1 is characterized in that having in split core type current transformer (8) jaw insulation wire-hanging hook (11) that and insulation shell (14) fuse, and makes tested lead hang over the middle position that just in time is in jaw when insulation wire-hanging hook (11) is gone up.
4, it is characterized in that go up also having one can control that jaw opens or closed insulation backguy (15) by the described instrument of claim 1 at split core type current transformer (8), (15) one of backguys of insulation are fixed on the place of the insulation handle mounting spring (7) of active iron stamen (9), and the other end is passed cable-through hole on spring (7), the insulation shell (14) and insulation and taken over (3) and go below guiding to.
5, an illuminating lamp (12) is installed is controlled by the described instrument of claim 1 it is characterized in that in split core type current transformer (8) jaw, insulating wire-hanging hook (11) and insulation shell (14) junction by the lighting lamp power switch (19) on the reometer (1).
6, it is characterized in that by the described instrument of claim 1 reometer (1) is made up of sensitive galvanometer (20) and metering circuit, metering circuit is made up of input plug socket (17), shunt resistance (28), Gear Select Switch (25), sensitivity selecting switch (22), operational amplifier (29), zero potentiometer (27), bridge rectifier circuit (30), sheet lighting lamp (18), lighting lamp power switch (19), gear pilot lamp and power supply.
7, it is characterized in that when measuring the electric current difference of two pole lines by the described instrument of claim 1, Gear Select Switch (25) is thrown the difference gear, make two split core type current transformers (8) go up coil (13) output line and form the antiphase series circuit, this instrument energy measurement goes out the electric current difference of two trolley wires.
8, it is characterized in that when measuring little electric current by the described instrument of claim 1, sensitivity selecting switch (22) is thrown the I/10 position, tested electric current delivers to bridge rectifier circuit (30) after operational amplifier (29) amplifies again and sensitive galvanometer (20) goes to measure, and makes each grade measurement sensitivity improve 10 times.
9, it is characterized in that the gear pilot lamp that also useful light emitting diode is linked to be in metering circuit by the described instrument of claim 1, left line pilot lamp (26), right line pilot lamp (24), difference pilot lamp (21) and I/10 pilot lamp (23) are arranged, show the gear at Gear Select Switch (25) and sensitivity selecting switch (22) place.
10, take over (3) length between 20-60 centimetre by the described instrument of claim 1 it is characterized in that insulating brace (6), insulation, various insulating bars, pipe, layer, shell etc. mainly insulating bodies is withstand voltage all should be more than 5 kilovolts, safe in utilization to guarantee.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208317 CN87208317U (en) | 1987-05-19 | 1987-05-19 | Detecting device for electricity leakage and illicit electricity using |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208317 CN87208317U (en) | 1987-05-19 | 1987-05-19 | Detecting device for electricity leakage and illicit electricity using |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87208317U true CN87208317U (en) | 1988-06-15 |
Family
ID=4823607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87208317 Withdrawn CN87208317U (en) | 1987-05-19 | 1987-05-19 | Detecting device for electricity leakage and illicit electricity using |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87208317U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636688A (en) * | 2012-04-27 | 2012-08-15 | 武汉电力职业技术学院 | Detector for unbalance ratio of three-phase current of low-voltage line |
| CN103323649A (en) * | 2013-06-18 | 2013-09-25 | 国家电网公司 | Current measuring device |
| CN103472281A (en) * | 2013-09-23 | 2013-12-25 | 国家电网公司 | Clamp-type current meter safe to use |
| CN108120862A (en) * | 2017-11-29 | 2018-06-05 | 国网河南省电力公司焦作供电公司 | The method of portable rapid stealing detecting electric installation and rapid stealing detecting electricity |
-
1987
- 1987-05-19 CN CN 87208317 patent/CN87208317U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636688A (en) * | 2012-04-27 | 2012-08-15 | 武汉电力职业技术学院 | Detector for unbalance ratio of three-phase current of low-voltage line |
| CN102636688B (en) * | 2012-04-27 | 2014-11-26 | 武汉电力职业技术学院 | Detector for unbalance ratio of three-phase current of low-voltage line |
| CN103323649A (en) * | 2013-06-18 | 2013-09-25 | 国家电网公司 | Current measuring device |
| CN103472281A (en) * | 2013-09-23 | 2013-12-25 | 国家电网公司 | Clamp-type current meter safe to use |
| CN108120862A (en) * | 2017-11-29 | 2018-06-05 | 国网河南省电力公司焦作供电公司 | The method of portable rapid stealing detecting electric installation and rapid stealing detecting electricity |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |