CN2901447Y

CN2901447Y - Anti-theft warning system for transformer and power line

Info

Publication number: CN2901447Y
Application number: CN 200620115441
Authority: CN
Inventors: 高宝龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-17
Filing date: 2006-05-17
Publication date: 2007-05-16
Anticipated expiration: 2016-05-17

Abstract

The utility model relates to an anti-theft alarming system for voltage transformer and power line, comprising a wireless alarming receiver, a wireless emitter, a trigger switch, a bridge circuit and an anti-theft bolt consisted of a threaded rod and a corresponding turnbuckle. The bridge circuit comprises four bridge arms respectively consisted of four impedance elements, wherein at least the impedance elements of one bridge arm are embedded on the bottom of the turnbuckle and a wire connected with the impedance element is guided out via a center hole on the threaded rod. The trigger switch comprises a trigger element and a switch element, wherein the trigger terminal of the trigger element is connected with the output terminal of the bridge circuit and the switch element is connected with the wireless emitter. The utility model alarms when the voltage transformer is destroyed or the power line is steeled.

Description

Transformer and power line anti-theft alarming system

Technical field

The utility model relates to guard against theft and alarm system, particularly the guard against theft and alarm system of field electric transformer and line of electric force.

Background technology

The field electric transformer is constant because of far keeping an eye on from the resident residence, often takes place stolen.The means of theft are earlier transformer to be left behind from high platform, open the housing top cover of transformer then, therefrom steal the line bag.The social danger of this class case of violation of law is very big, has all caused damaging influence for open-air worker, agricultural production, because this class case generally all occurs in the field, is difficult for setting up defences and tracking down.

With line of electric force, especially the electrofarming line of force that transformer links, far away from the resident residence, can't nurse, stolen case also often takes place, the detection difficulty is big.

The utility model content

The purpose of this utility model provides a kind of transformer and power line anti-theft alarming system, sends alerting signal when destroyed or line of electric force is stolen at transformer, reminds the nurse personnel, so that in time catch the robber.

For achieving the above object, the utility model following technical scheme of sampling:

A kind of transformer and power line anti-theft alarming system, comprise the radio alarming receiver, transmitting set, trigger switch, it is characterized in that: this system also comprises bridge diagram, anti-theft bolt, anti-theft bolt is made up of screw rod and the swivel nut that is mated, bridge diagram has first, second, the 3rd, the 4th brachium pontis, these four brachium pontis are made of four impedors respectively, wherein the impedor of at least one brachium pontis is embedded in the bottom of described swivel nut, connecting this impedor lead is drawn by the center pit of screw rod, described trigger switch is formed by triggering element and on-off element, this trigger end that triggers element links to each other with the output terminal of bridge diagram, and this on-off element is connected with transmitting set.

Described triggering element is a controllable silicon, on-off element is a relay, this silicon controlled anode is connected with the positive pole of power supply through the coil of relay, this silicon controlled negative electrode is connected with the negative pole of power supply, this silicon controlled gate pole is a trigger end, and the normally opened contact of described relay is serially connected on the current supply circuit of transmitting set.

The impedor of described bridge diagram the 4th brachium pontis is embedded in the bottom of described swivel nut, and the impedor of bridge diagram first brachium pontis is made up of two resistance, and one of them resistance is connected across the getting access to grid of first, second phase line of line of electric force and holds; Another resistance be connected across line of electric force first, the third phase line get access to grid the end on;

The transformer terminal that connects of described second, third phase line connects the end that the back constitutes first brachium pontis, first phase line connect the other end that transformer terminal constitutes first brachium pontis.

The utility model has following positive beneficial effect:

The radio alarming receiver of this product can be installed in nurse personnel's family, and transmitting set, bridge diagram, power supply, trigger switch are installed in the control enclosure.Control enclosure can be installed on the open-air electric pole.Like this; the nurse personnel at home; just can monitor in real time the transformer and the line of electric force in field; in case transformer is destroyed or line of electric force when stolen; transmitting set sends signal, and the radio alarming receiver is reported to the police after receiving signal, in time notifies the nurse personnel; be convenient to catch the robber, protection transformer and line of electric force.

Description of drawings

Fig. 1 is a mounting structure synoptic diagram of the present utility model.

Fig. 2 is the circuit theory diagrams of the utility model embodiment one.

Fig. 3 is the amplification decomposition figure of anti-theft bolt among Fig. 1.

Fig. 4 is the circuit theory diagrams of the utility model embodiment two.

Embodiment

Embodiment one:

Please refer to Fig. 1, Fig. 2, Fig. 3, the utility model is a kind of transformer and power line anti-theft alarming system, comprise radio alarming receiver REC, transmitting set SEN, trigger switch, this system also comprises bridge diagram, anti-theft bolt 1, anti-theft bolt is made up of screw rod 101 and the swivel nut 102 that is mated, bridge diagram has first, second, third, fourth brachium pontis, these four brachium pontis are made of four impedor R1, R2, R3, R4 respectively, and these four impedor R1, R2, R3, R4 can be four resistance that resistance is identical.Transmitting set SEN, bridge diagram, dry cell DC1, dry cell DC2, trigger switch are installed in the control enclosure 3, and control enclosure 3 can be installed on the electric pole 4.

Transmitting set SEN and radio alarming receiver REC are prior art, can adopt the commercially available prod, the transmitting set SEN of the RS200-1 model of producing as Shenzhen, and the radio alarming receiver REC of RS200-2 model.

Wherein the impedor R4 of the 4th brachium pontis is embedded in the bottom of swivel nut 102, connecting this impedor lead 5 is drawn with bridge diagram in the control enclosure 3 by the center pit 103 of screw rod 101 and is connected, trigger switch is formed by triggering element and on-off element, the triggering element is a controllable silicon SCR, on-off element is a relay J, the anode of this controllable silicon SCR is connected with the positive pole of dry cell DC2 through the coil of relay J, this silicon controlled negative electrode SCR is connected with the negative pole of dry cell DC2, the gate pole of this controllable silicon SCR is a trigger end, link to each other with the output terminal P2 of bridge diagram, the normally opened contact J1 of relay J is serially connected on the current supply circuit of transmitting set SEN.

During use, earlier screw rod 101 is penetrated in the fixed orifice of the shell of transformer 2 and top cover, then the lead that connects impedor R4 is drawn from the center pit 103 of screw rod 101 with bridge diagram in the control enclosure 3 and be connected, constitute balanced bridge, and screwing swivel nut 102, swivel nut 102 plays the effect of nut.Center pit at screw rod 101 pours into the partial fixing that an amount of epoxide-resin glue is arranged in lead 5 center pit 103 for 103 li then, the shell and the top cover that are connected and fixed transformer 2 with anti-theft bolt 1 have just been finished, epoxide-resin glue can adopt the commercially available prod, as common on the market " brothers are good " glue.

After installing dry cell DC1, DC2, circuit is on the alert, the bridge diagram balance, symmetry is connected on four triode V2, V1 between the brachium pontis and ends, there is not potential difference (PD) between contact P1, P2 in the circuit, triode V3 is in cut-off state, the gate pole Triggerless of controllable silicon SCR, dry cell DC2 nonpassage, not power consumption, dry cell DC1 has micro-power consumption, each impedor R1, R2, R3, R4 select tens kilohms resistance for use, quiescent current is at microampere order, and therefore, the power consumption of the state of alert is small.

The burglar is if want to open transformer 2 top covers, steal line bag wherein, then screw rod 101 will be back-outed from swivel nut 102 earlier, no matter unscrewing screw rod 101 still is swivel nut 102, the part of being fixed by epoxide-resin glue that lead 5 is in the center pit 103 is twisted into two parts in the capital, makes the bridge diagram out of trim.

The burglar also can make the bridge diagram out of trim if directly cut off the lead 5 between control enclosure 3 and the anti-theft bolt 1 or destroy control enclosure 3, if transformer 2 is directly moved away, also can be dragged the disconnected bridge diagram out of trim that makes because of lead 5.

When the bridge diagram out of trim, produce potential difference (PD) between contact P1, P2 in the circuit, symmetry is connected on two triode V2, the V1 conducting successively between the brachium pontis, thereby makes triode V3 by by becoming conducting, triggers the gate pole of controllable silicon SCR, after the SCR conducting, the coil of relay J gets electric, and its normally opened contact J1 closure makes the power end of transmitting set SEN and dry cell DC2 constitute path, transmitting set SEN sends signal, reports to the police after radio alarming receiver REC receives signal.

In like manner, impedor R1, R2, the R3 of other three brachium pontis is contained in respectively in other three swivel nuts, just can constitutes four anti-theft bolts, four jiaos of transformer 2 top covers are fixed with housing.

Embodiment two:

With line of electric force, especially the electrofarming line of force that transformer links, far away from the resident residence, when irrigating electricity consumption, the field generally all the someone work, the stolen phenomenon of line of electric force is rare.In the winter time during slack season, the continuous sometimes two wheat harvesting periods electricity of not bothering to see me out for preventing unloaded power consumption, often disconnects electric brake K, and the stolen incident of line of electric force often takes place in this case.

The utility model also can be monitored line of electric force, please refer to Fig. 4, label A, B among the figure, C represent the triple-phase line of the electrofarming line of force, the electrofarming line of force is the branch line of electrical network, is connected with electrical network by electric brake K, when not bothering to see me out electricity slack season, for preventing unloaded power consumption, disconnect electric brake K, at this moment, first, second, third phase line A, B, C are in off-position.First, second, third phase line A, B, C are the end that gets access to grid near the end of electric brake K, away from the end of electric brake K for connecing transformer terminal.

The impedor of bridge diagram first brachium pontis is made up of two resistance R 1-1, R1-2, and one of them resistance R 1-1 is connected across the getting access to grid of first, second phase line A, B of line of electric force and holds; Another resistance R 1-2 be connected across line of electric force first, third phase line A, C get access to grid the end on.

The transformer terminal that connects of second, third phase line B, C connects the end that the back constitutes first brachium pontis, and the first phase line A connects the other end that transformer terminal constitutes first brachium pontis.The impedor R4 of bridge diagram the 4th brachium pontis is embedded in the bottom of swivel nut, is used to protect transformer, and impedor R2, R3, R4 are four resistance that resistance is identical.Because of resistance R 1-1, R1-2 are connected in parallel by first, second, third phase line A, B, C, the dc resistance of each phase line is very little, can ignore, so the resistance of resistance R 1-1, R1-2 is the twice of impedor R2 resistance value.If the burglar steals first, second, third phase line A, B, arbitrary phase line among the C, resistance R 1-1 then, parallel connection relation between the R1-2 is destroyed, during the bridge diagram out of trim, P1, produce potential difference (PD) between P2, symmetry is connected on two triode V2 between the brachium pontis, the V1 conducting, thereby make triode V3 become conducting by ending, trigger the gate pole of controllable silicon SCR, after the SCR conducting, the coil of relay J gets electric, and its normally opened contact J1 closure makes the power end of transmitting set SEN and dry cell DC2 constitute path, transmitting set SEN sends signal, reports to the police after radio alarming receiver REC receives signal.Thereby realize the triple-phase line of line of electric force is monitored simultaneously.

Claims

1. transformer and power line anti-theft alarming system, comprise the radio alarming receiver, transmitting set, trigger switch, it is characterized in that: this system also comprises bridge diagram, anti-theft bolt, anti-theft bolt is made up of screw rod and the swivel nut that is mated, bridge diagram has first, second, the 3rd, the 4th brachium pontis, these four brachium pontis are made of four impedors respectively, wherein the impedor of at least one brachium pontis is embedded in the bottom of described swivel nut, connecting this impedor lead is drawn by the center pit of screw rod, described trigger switch is formed by triggering element and on-off element, this trigger end that triggers element links to each other with the output terminal of bridge diagram, and this on-off element is connected with transmitting set.

2. transformer as claimed in claim 1 and power line anti-theft alarming system, it is characterized in that: described triggering element is a controllable silicon, on-off element is a relay, this silicon controlled anode is connected with the positive pole of power supply through the coil of relay, this silicon controlled negative electrode is connected with the negative pole of power supply, this silicon controlled gate pole is a trigger end, and the normally opened contact of described relay is serially connected on the current supply circuit of transmitting set.

3. transformer as claimed in claim 1 and power line anti-theft alarming system, it is characterized in that: the impedor of described bridge diagram the 4th brachium pontis is embedded in the bottom of described swivel nut, the impedor of bridge diagram first brachium pontis is made up of two resistance (R1-1, R1-2), and one of them resistance (R1-1) is connected across the getting access to grid of first, second phase line (A, B) of line of electric force and holds; Another resistance (R1-2) be connected across line of electric force first, third phase line (A, C) get access to grid the end on;

The transformer terminal that connects of described second, third phase line (B, C) connects the end that the back constitutes first brachium pontis, first phase line (A) connect the other end that transformer terminal constitutes first brachium pontis.