CN85203338U - Controller for preventing consuming electric source bypassing watthour meter - Google Patents

Abstract

The utility model relates to a controller for preventing consuming electric source bypassing watthour meter which is theft-proof electric equipment used with a single-phase watthour meter, belonging to the circuit device for power supply. With the development of electric industry, various electricity stealing behaviors occur continuously, which brings loss to the country; the controller for preventing consuming electric source bypassing watthour meter provided by the utility model utilizes two transformer type current samplers to sample the difference value of the current so as to control the electricity consumption of users; for various phenomena of electricity stealing developed between the service entrance and the watthour meter, the controller for preventing consuming electric source bypassing watthour meter immediately cuts off power without misoperation to overloading electricity passing through the watthour meter or load short circuit exists. The controller for preventing consuming electric source bypassing watthour meter can also be used as the meter front switch of the watthour meter.

Description

Controller for preventing illegal use of electricity

The utility model is the innovation and creation about controller for preventing illegal use of electricity, is the anti-electricity-theft equipment of adapted before single-phase watt-hour meter, belongs to the circuit arrangement of power supply.

Along with the increase gradually of development of electric power industry and various power consumption equipments, various forms of electricity filching behaviors also constantly take place.As manage direct stealing or live wire stealing etc. over the ground before short circuit meter current coil, the kilowatt-hour meter, cause certain loss to country.Though relevant department has taked a lot of control methods to electricity filching behavior,, all can not fundamentally prevent stealing as adopting power-steeling preventing electric meter table tail, watch glasses and iron power-steeling preventing electric meter table case etc.

Task of the present utility model provides a kind of controller for preventing illegal use of electricity, electricity consumption to the user is controlled, various stealings before can preventing from user's house lead in termination to kilowatt-hour meter, the user that electricity filching behavior is arranged is stopped power supply immediately, but overload electricity consumption or the load short circuits by kilowatt-hour meter all do not had misoperation.

Task of the present utility model is finished as follows: at user's live wire house lead in end series transformer formula house lead in current sampler, at kilowatt-hour meter place series transformer formula current watt-hour meter sampler, the sampling current of two samplers is compared in the reed switch relay coil, take place if any stealing electricity phenomenon, two sampling currents produce difference, this difference electric current produces magnetic field and makes the contact of tongue tube contact, connect the electromagnetic relay coil power supply, make its action power dump live wire, stop the user being powered.

Accompanying drawing 1 is the arrangements of elements schematic diagram of a specific embodiment of the present utility model and winding diagram is installed.1 is control box among the figure, and 2 is terminal box, and 3 is the live wire house lead in, 4 is entrance hole, and 5 is patch bay, and 6 is the house lead in current sampler, 7 is this sampler secondary coil, and 8 is this sampler current coil, and 9 is electromagnetic relay, 10 is indicator board, and 11 is core bar, and 12 is brace, 13 is reed switch relay, and 14 is base plate, and 15 is the current watt-hour meter sampler, 16 is this sampler current coil, and 17 is this sampler secondary coil, and 18 is terminal block, 19 is plug, and 20 is the zero line house lead in, and 21 is lead, 22,23 is holding wire, 24 is user load, and 25 is single-phase watt-hour meter, and 26 is the terminal box shell, 27,30 is lead seal hole, 28 is lid, and 29 is inspection hole, and 31 is fixing hole, A, B is the contact

-(17) are contact.Accompanying drawing 2 is electrical schematic diagrams of the present utility model.36,37 is the reed switch relay coil among the figure, and 38,40 is the tongue tube contact, and 39 is tongue tube.J is an electromagnetic relay coil.Accompanying drawing 3 is the structural representation of reed switch relay.41 is skeleton among the figure, and 42 is shell, and 43 is coil.Accompanying drawing 4 is the structural representation of electromagnetic relay.44 is coil among the figure, and 45 are awl tube, and 46 be sleeve, and 47 be support plate, and 48 is the core tube, and 49 is fixing indicator board screw, and 50 is connector, and 51 is grade iron.

Below in conjunction with a description of drawings specific embodiment of the present utility model.With reference to accompanying drawing 1,2, this embodiment is divided into control box (1) and (2) two parts of terminal box with controller for preventing illegal use of electricity.The contact that house lead in live wire end (3) is received patch bay (5) through control box entrance hole (4) is 1. gone up, 1. contact is connected on the contact (A), receive the end (32) of the current coil (8) of house lead in current sampler (6) by brace (12), contact (B), the other end of current coil (33) is received the contact of patch bay and is 3. gone up.8. 3. contact gone up through the contact that lead (21) is received the current coil (16) of terminal box current watt-hour meter sampler (15), and 9. the other end of current coil is plugged on the ramp (14) of meter current coil by plug (19).6. 7. the secondary coil of current watt-hour meter sampler (17) passes through contact, and 5. holding wire (22) (23) 4. is connected with the contact of control box patch bay respectively.Sampling current signal in sampling current signal in the house lead in current sampler secondary coil (7) and the current watt-hour meter sampler secondary coil compares by reed switch relay (13).The coil of reed switch relay (36) (37) is a two-wire and around one group of coil of reverse connection, mid point

Be connected to the patch bay contact 5., the contact that 10. terminates to patch bay of coil (37) 4., an end (11) of coil (36) is connected with house lead in current sampler secondary coil one end (34).If the current signal of two sampler taking-ups equates to cancel each other in the magnetic field that reed switch relay two coils produce, tongue tube (39) is failure to actuate.When stealing electricity phenomenon takes place, two sampling current signals are unequal, then produce magnetic field in coil, and the size in this magnetic field changes with the difference size of two current signals, after signal difference reached certain numerical value, the magnetic field of generation contacted the contact of tongue tube (38), (40).2. the contact that contact one end (12) of tongue tube is received patch bay is gone up with house lead in zero line (20) and is connected.The contact other end (13) is connected the back and is connected with contact (B) with electromagnetic relay coil J.When one contact of tongue tube contact, electromagnetic relay coil J inserts electrical network at once, inhales moving core bar (11) and brace (12) contact A, contact B are disconnected, and stops the user being powered thereby cut off live wire.The utility model electromagnetic relay core bar does not have the device of homing, and axially level is installed, and core bar had both made outage automatically reset after being inhaled into coil.Therefore stealing is permanent power failure after taking place.After during application controller for preventing illegal use of electricity being pressed the wiring of Fig. 1 state, seal the power supply that puts into operation by electric industry department with the control box fastening and with lead sealing, therefore after the stealing outage, must please call industry department again and open lead sealing, core bar pulled out to power again after making brace touch contact (A) and contact (B), reach the purpose that prevents stealing effectively.The technological parameter of house lead in current sampler of the present utility model and current watt-hour meter sampler should be in full accord as far as possible, and selecting a mountain type and a shape silicon steel sheet in the present embodiment for use is iron core, long-pending 10.4 * 13 millimeters of core section ², primary and secondary coil ratio is 20:100, diameter of wire is 1.4 millimeters and 0.29 millimeter, by general transformer technique for coiling assembling back dipping lacquer.The structure of reed switch relay is with reference to accompanying drawing 3, tongue tube (39) is to select JAG-4-1H type standard component for use, make tubular coil (43) at tongue tube external application diameter 0.13 millimeter high insulation resistance enamelled wire two-wire and around 1200 circles, should guarantee that also coil (36) is consistent with (37) parameter, add metal shell (42) after coiling is finished.The structure of electromagnetic relay is with reference to accompanying drawing 4, and coil (44) is with 0.11 millimeter enamel insulated wire of diameter, coiling 5000 circles, and core bar (11), the steel processing of awl tube (45) available cold drawn garden, the available fine copper plate of brace (12) is made.Core bar, brace, fixedly (49) three parts of indicator board screw can be cast into an integral body and keep to each other insulation with phenolic plastics, fixing indicator board (10) thereon can drive brace after core bar is inhaled simultaneously and indicator board moves.Contact (A) and the available elasticity in contact (B) and electric conductivity preferred metal sheet such as tin bronze sheet processing and fabricating are fixed on the base plate (14).The base plate of control box, the available ABS plastic die casting of lid (28) are fixed on parts such as patch bay, house lead in current sampler, reed switch relay, electromagnetic relay, contact A, contact B on the base plate afterwards.By fixing hole (31) control box is fixed on the metope during installation.Control box base plate and lid should be able to closely fasten and available lead sealing is sealed.9. the contact of terminal box inserts on the meter current coil ramp (14) by plug (19), utilize terminal screw that terminal box is fixed on the kilowatt-hour meter lower end afterwards, plug can be processed with brass, the shell of terminal box (26) can select for use good insulating to have the bakelite of certain intensity, the size of shell should be able to be lived the complete shelves of other ramp (15) (16) (17) of kilowatt-hour meter, can directly prevent from the stealing of kilowatt-hour meter ramp.

Use before the single-phase watt-hour meter of present embodiment adapted below 220 volt 5 is pacified, control box is installed in the house lead in place of live wire, when at control box to there being stealing electricity phenomenon to take place between terminal box, the stealing electric current reaches 230 MAHs, promptly be equivalent to connect electrical appliance with 50 watts (or more than 50 watts), this controller for preventing illegal use of electricity promptly moves, and cuts off the electricity supply.Can guarantee simultaneously that the overload that does not belong to stealing violating the regulations does not all have misoperation when using (the electricity consumption electric current can reach 10 peaces) or load short circuits.Apparatus structure is simple, it is reliable to be active in one's movements.Consumed power is few, and overload capacity is strong.

The utility model can effectively prevent user's electricity filching behavior, can also play the effect of kilowatt-hour meter table preceding switch simultaneously.

Claims (6)

1, a kind of controller for preventing illegal use of electricity of forming by contact [A], contact [B], patch bay [5], base plate [14], lid [28], terminal block [18], shell [26] etc., the 7. end that it is characterized in that the secondary coil [17] of the current watt-hour meter sampler [15] in the terminal box [2], by holding wire [23] contact 5. with control box [1] in [35] end and the coil mid point of reed switch relay [13] of secondary coil [7] of house lead in current sampler [6]

Connect, 6. current watt-hour meter sampler secondary coil is held, 4. be connected with reed switch relay coil [37] by holding wire [22] contact, [34] end of house lead in current sampler secondary coil [7] is connected with reed switch relay coil [36], the contact [40] of tongue tube [39] is connected with house lead in zero line [20], contact [38] is connected with contact [B] by the coil fourth of electromagnetic relay [9], inhale moving core bar [11] after the electromagnetic relay coil fourth energized and drive brace [12] action, cut off being connected of contact [A] and contact [B].

2, according to the said controller for preventing illegal use of electricity of claim 1, it is characterized in that house lead in current sampler and current watt-hour meter sampler are transformer type, and the parameter of two samplers is consistent as far as possible.

3, according to the said controller for preventing illegal use of electricity of claim 1, it is characterized in that reed switch relay (13) is to be with tubular coil (43) in the outside of tongue tube (39), coil (36) (37) two-wire is also drawn wiring by skeleton (41), added metal shell (42) around reverse connection.

4, according to the said controller for preventing illegal use of electricity of claim 1, the core that it is characterized in that the coil (44) of electromagnetic relay (9) is equipped with awl tube (45), core bar (11), brace (12) and fixedly indicator board screw (49) become one and mutually insulated by connector (50), core bar drives brace when being inhaled into the awl tube and indicator board (10) moves, should guarantee that the core bar axis is horizontal during instrument work, and core bar does not automatically revert to the device of the position of brace connecting terminal A and contact B.

5, according to the said controller for preventing illegal use of electricity of claim 1, it is characterized in that the current watt-hour meter sampler current coil (15) in the terminal box (2) is connected with the kilowatt-hour meter ramp by plug (19), its shell (26) is lived the whole shelves of each ramp of kilowatt-hour meter.

6, according to the said controller for preventing illegal use of electricity of claim 1, it is characterized in that control box base plate (14) and the available plastics die casting of lid (28) makes, lid and base plate closely fasten, on lid, be provided with inspection hole (29), lead seal hole (30), on base plate, be provided with lead seal hole (27), fixing hole (31), entrance hole (4).

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