CN201204437Y - Intelligent double-control electrical leakage cut-off alarm - Google Patents
Intelligent double-control electrical leakage cut-off alarm Download PDFInfo
- Publication number
- CN201204437Y CN201204437Y CNU2008200799315U CN200820079931U CN201204437Y CN 201204437 Y CN201204437 Y CN 201204437Y CN U2008200799315 U CNU2008200799315 U CN U2008200799315U CN 200820079931 U CN200820079931 U CN 200820079931U CN 201204437 Y CN201204437 Y CN 201204437Y
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- decoder
- circuit breaker
- intelligent measurement
- electrical network
- current circuit
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Abstract
The utility model provides an intelligent double-control current leakage breaking alarm, which is characterized in that: the alarm comprising a metal casing, an intelligent detecting decoder, a switching power supply, a residual current circuit breaker; an input terminal of the intelligent detecting decoder is connected with an input terminal of electric network; the input terminal of the intelligent detecting decoder also connected with a current leakage voltage sampling line; the current leakage voltage sampling line is connected with the metal casing, which is communicated by current leakage poles of the metal casing and a distribution equipment; the switching power supply is connected in series to the input terminal of the intelligent detecting decoder and connected with the input terminal of electric network for supplying power for the intelligent detecting decoder; the residual current circuit breaker is connected in series between the input terminal of electric network and the output terminal of electric network; the output terminal of the intelligent detecting decoder is connected with the residual current circuit breaker; the residual current circuit breaker controls switching between the input terminal and the output terminal of electric network based on the output signal of the intelligent detecting decoder. The apparatus detects the safety condition of the electric network by current leakage voltage, adapts environmental quality for electric supply for field work, and makes sure safety power utilization for field work.
Description
Technical field
The utility model relates to a kind of circuit protection device, particularly a kind of intelligent double-control electrical leakage breaking alarm at the design of field power supply environmental quality.
Background technology
For the work that conducts a field operation such as many needs such as oil exploration, exploitations of mineral resources, open-air electricity consumption is a very big problem.Can the instrument and equipment that it is directly connected to field work run well, and whether the staff can normal life.Particularly in recent years, along with production-scale continuous expansion, the continuous improvement of field work condition, the power consumption of field work is also increasing gradually, and open-air safety utilization of electric power problem is also just outstanding all the more.Generally in real work, the outfield using electricity system often needs to be provided with special controller switching equipment.For guaranteeing that system's Electrical Safety generally all adds circuit protection device on these controller switching equipments.Yet, because the work characteristics and the particular surroundings of field work make existing circuit protection device exist a lot of problems when reality is used.
Existing circuit protection device normally carries out safe judgement by the leakage current that detects in the main circuit.When circuit protection device detects leakage current in the circuit greater than certain threshold value, can automatic shutdown circuit, to guarantee the safety of user and power consumption equipment.But the ground state that this detection depends on circuit protection device itself is good.Yet, during operation in the open air, build, probably owing to construction is hurry or the geology reason causes the earthing device ground state bad owing to the camping site mostly is temporarily.In this case, existing circuit protection device is difficult to accurately circuit be implemented protection, and electric leakage or electric shock phenomenon happen occasionally.In addition, field work is adopted oneself generating through regular meeting, and its self power generation voltage instability causes circuit protection device to move the undesired load circuit that influences probably, even causes device failure.And existing circuit protection device does not often possess the voltage stabilizing design to this voltage disturbance.
Be not difficult to find out,, the Electrical Safety even the personal safety of field work all caused threat because existing circuit protection device can not adapt to the operational environment of field work.Therefore, be necessary to design a kind of novel circuit protection device at the characteristics of field work.
Summary of the invention
The purpose of this utility model is to solve the Electrical Safety problem under the existing field work condition, and a kind of electrical leakage breaking warning device that is applicable to open-air power supply environmental quality is provided.
The purpose of this utility model is achieved by following technical proposals:
Intelligent double-control electrical leakage breaking alarm is arranged on the electrical network, in order to protection electrical network Electrical Safety, it is characterized in that: comprise metal shell, Intelligent Measurement decoder, Switching Power Supply, residual current circuit breaker;
The input of described Intelligent Measurement decoder is connected with the electrical network input; The input of described Intelligent Measurement decoder is also gathered line with electrical leakage voltage and is connected; This electrical leakage voltage is gathered line and is linked to each other with described metal shell, is connected with the drain electrode of power distribution equipment by this metal shell;
The input that described Switching Power Supply is serially connected with described Intelligent Measurement decoder is connected with the electrical network input, is the power supply of Intelligent Measurement decoder;
Described residual current circuit breaker is serially connected with between electrical network input and the electrical network output; The output of described Intelligent Measurement decoder is connected with residual current circuit breaker; Described residual current circuit breaker is according to the output signal control electrical network input of Intelligent Measurement decoder and the break-make between the electrical network output.
Also comprise a relay; This relay is serially connected with between described Intelligent Measurement decoder, Switching Power Supply, residual current circuit breaker and the electrical network input.
Also comprise audible-visual annunciator; The output of described Intelligent Measurement decoder also links to each other with audible-visual annunciator; This audible-visual annunciator is subjected to the output signal control of Intelligent Measurement decoder to send audible and visible alarm.
The beneficial effects of the utility model are:
1, intelligent double-control electrical leakage breaking alarm increase of the present utility model comes the detection of grid safe condition by electrical leakage voltage, has adapted to the power supply environmental quality of field work, has guaranteed the safety utilization of electric power of field work.
2, intelligent double-control electrical leakage breaking alarm of the present utility model carries out voltage stabilizing control by add Switching Power Supply at mains side, makes alarm work more stable.
Description of drawings
Fig. 1 is the intelligent double-control electrical leakage breaking alarm first example structure figure;
Fig. 2 is the intelligent double-control electrical leakage breaking alarm second example structure figure;
Fig. 3 is Intelligent Measurement decoder circuit figure.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Intelligent double-control electrical leakage breaking alarm of the present utility model is may have the designed circuit protection device of the bad characteristics of ground state at distribution system under field the power supply environmental quality, particularly field condition.Its core design main points be the available circuit protective device with the basis of leakage current as safe basis for estimation on; further the electrical leakage voltage that increases drain electrode detects; judge according to this drain electrode whether self electric leakage external electric leakage well or is not arranged, and further Circuits System is implemented corresponding protection.
Fig. 1 is the first example structure figure of the utility model electrical leakage breaking alarm, and this embodiment is designed at the three-phase four-wire system power supply.This alarm comprises: metal shell, Intelligent Measurement decoder, Switching Power Supply, residual current circuit breaker, audible-visual annunciator.
This Intelligent Measurement decoder is the core of alarm, and this part is according to the reference signal judgement electrical network of input and the situation of consuming device, and output control signal control related device is protected electrical network and reported to the police.The input of Intelligent Measurement decoder links to each other respectively with A line, B line, C line, the zero line of electrical network input.In addition, this Intelligent Measurement decoder also is connected with electrical leakage voltage collection line.This A line, B line, C line, zero line and electrical leakage voltage are gathered the reference signal of the input signal of line as Intelligent Measurement decoder judgement electrical network and consuming device situation.The output of Intelligent Measurement decoder is connected with residual current circuit breaker with above-mentioned audible-visual annunciator.Wherein, residual current circuit breaker is serially connected between electrical network input and the electrical network output.When the Intelligent Measurement decoder is judged electrical network input normal condition according to the reference signal of input, then to control residual current circuit breaker and remain closed, electrical network input and electrical network output are communicated with.When the Intelligent Measurement decoder belongs to abnormal condition according to the reference signal detection of grid of importing, then control residual current circuit breaker and cut off electric network source, and make audible-visual annunciator send sound and light alarm signal prompting monitor staff.
Because field work is adopted oneself generating, its self power generation voltage instability through regular meeting.Existing circuit protection device only is to be its power supply by general vertoro spare; cause the components and parts in the protective device to damage probably; also may cause protective device influenced by power-supply fluctuation and frequent the warning cut off electrical network, cause the consuming device can't operate as normal.Based on the problems referred to above, the designed intelligent double-control electrical leakage breaking alarm of the utility model is serially connected with Switching Power Supply between Intelligent Measurement decoder and electrical network input.Switching Power Supply is a kind of time ratio that turns on and off by the control switch pipe, keeps the power supply of regulated output voltage.This power supply can also play the effect of voltage stabilizing in the transformation rectification, can guarantee that circuit can not be subjected to the influence of power-supply fluctuation.
Should be pointed out that the electrical leakage voltage collection line that Intelligent Measurement decoder input is connected in the said structure is that the bars that the utility model alarm is set up is gathered circuit, whether normal in order to detect the distribution system ground path.Described electrical leakage voltage is gathered line and is linked to each other with the metal shell of alarm.Simultaneously, this metal shell (not shown) that also links to each other with the drain electrode of power distribution equipment, the drain electrode of power distribution equipment typically refers to power distribution room or iron sheet room here.Therefore, gathering the reference signal of line input Intelligent Measurement decoder actual by electrical leakage voltage is exactly the electric leakage signal of power distribution equipment.If power distribution equipment ground connection is good, then above-mentioned intelligent double-control electrical leakage breaking alarm is the same with general circuit protection device, is the safety detection foundation with the leakage current of circuit, and circuit is implemented protection.As the imperfect earth of crossing power distribution equipment or external electric leakage is arranged; then above-mentioned intelligent double-control electrical leakage breaking alarm will be gathered the electrical leakage voltage that line detects power distribution equipment by electrical leakage voltage and whether surpass setting (normally 36V), promptly circuit be implemented protection and needn't form current circuit.
Fig. 2 is the second example structure figure of the utility model electrical leakage breaking alarm, and this embodiment is designed at two-wire system power.This embodiment at the problem of the easy reversal connection of two-wire system power, has set up a relay (model: WJ184-2CAC-80A) especially on the basis of aforementioned first embodiment.This relay is serially connected with between described Intelligent Measurement decoder, Switching Power Supply, residual current circuit breaker and the electrical network input.As user during with the power supply reversal connection, the Intelligent Measurement decoder is judged the power supply reversal connection according to the power supply reference signal of input.Its control residual current circuit breaker is cut off electric network source, the concurrent visual alarm prompting monitor staff that speaks.The monitor staff stirs relay according to alarm, makes power supply wiring correct.The remaining circuit structure and first embodiment are identical in the present embodiment, at this repeated description no longer just.
What should be pointed out that above-mentioned relay employing is the type hand relay.But in actual applications, use other existing relay types also can realize same effect, all should be considered as within protection range of the present utility model.
As from the foregoing, the core component of intelligent double-control electrical leakage breaking alarm of the present utility model is the Intelligent Measurement decoder, is responsible for the judgement and the circuit protection control strategy of electric network state.At this, provide physical circuit figure based on the second embodiment Intelligent Measurement decoder.As shown in Figure 3, P1, P2, P3 are the input of Intelligent Measurement decoder, and wherein P1 corresponding power live wire, P2 corresponding power zero line, the corresponding electrical leakage voltage of P3 are gathered line.The testing circuit that the reference signal of input input is formed via comparator IC1A and IC1B detects to be judged, and its judged result is sent to 1,2 pins of decoder IC2.After decoder IC2 deciphers this result, by its output 12 to 15 pins output.Wherein, 13 pins control back level residual current circuit breaker has only that residual current circuit breaker just remains closed when this pin output high level, and electrical network is in normal operating conditions.An indicator light in other three corresponding audible-visual annunciators of pins difference shows which kind of abnormal condition electrical network is in, and 13 pins are output low level then, and residual current circuit breaker is disconnected.
Claims (3)
1, intelligent double-control electrical leakage breaking alarm is arranged on the electrical network, in order to protection electrical network Electrical Safety, it is characterized in that: comprise metal shell, Intelligent Measurement decoder, Switching Power Supply, residual current circuit breaker;
The input of described Intelligent Measurement decoder is connected with the electrical network input; The input of described Intelligent Measurement decoder is also gathered line with electrical leakage voltage and is connected; This electrical leakage voltage is gathered line and is linked to each other with described metal shell, is connected with the drain electrode of power distribution equipment by this metal shell;
The input that described Switching Power Supply is serially connected with described Intelligent Measurement decoder is connected with the electrical network input, is described Intelligent Measurement decoder power supply;
Described residual current circuit breaker is serially connected with between electrical network input and the electrical network output; The output of described Intelligent Measurement decoder is connected with residual current circuit breaker; Described residual current circuit breaker is according to the output signal control electrical network input of Intelligent Measurement decoder and the break-make between the electrical network output.
2, intelligent double-control electrical leakage breaking alarm as claimed in claim 1 is characterized in that: also comprise a relay; This relay is serially connected with between described Intelligent Measurement decoder, Switching Power Supply, residual current circuit breaker and the electrical network input.
3, intelligent double-control electrical leakage breaking alarm as claimed in claim 1 or 2 is characterized in that: also comprise audible-visual annunciator; The output of described Intelligent Measurement decoder also links to each other with audible-visual annunciator; This audible-visual annunciator is subjected to the output signal control of Intelligent Measurement decoder to send audible and visible alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200799315U CN201204437Y (en) | 2008-04-14 | 2008-04-14 | Intelligent double-control electrical leakage cut-off alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200799315U CN201204437Y (en) | 2008-04-14 | 2008-04-14 | Intelligent double-control electrical leakage cut-off alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201204437Y true CN201204437Y (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200799315U Expired - Fee Related CN201204437Y (en) | 2008-04-14 | 2008-04-14 | Intelligent double-control electrical leakage cut-off alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201204437Y (en) |
-
2008
- 2008-04-14 CN CNU2008200799315U patent/CN201204437Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20110414 |