CN2512143Y - Leakage examination processor - Google Patents
Leakage examination processor Download PDFInfo
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- CN2512143Y CN2512143Y CN 01260919 CN01260919U CN2512143Y CN 2512143 Y CN2512143 Y CN 2512143Y CN 01260919 CN01260919 CN 01260919 CN 01260919 U CN01260919 U CN 01260919U CN 2512143 Y CN2512143 Y CN 2512143Y
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Abstract
The utility model relates to a leakage examination processor, which comprises a current inductor, an amplifying circuit, a relay, a timing circuit and a driving circuit, wherein, an inducing end of the current inductor is close to a detected power wire to induce the leaked current; the relay is connected between an input power and a load by a switch joint,and the on or off of the switch joint is used to control whether the power is sent to the load; the amplifying circuit is connected with the output end of the current inductor; the timing circuit is connected with the output end of the amplifying circuit; the trigger end of the driving circuit is connected with the output end of the timing circuit, while the output end of the driving circuit is connected with the relay to control whether the relay is excited; the amplifying circuit comprises an operational amplifier, and the positive and negative ends are connected with the current inductor by a capacitance and a resistance. The device can detect the leakage occurrence in time with automatic power reset function, further can detect and stop the power theft of user.
Description
(1) technical field:
The utility model relates to a kind of electric quantity detection apparatus, and particularly a kind of power line leaky that detects is also done temporary transient outage disposal, until the detection of electrical leakage processing unit of situation eliminating.
(2) background technology:
Electric power is the indispensable people's livelihood and industrial energy, in people's daily life, play an important role, and the supply of electric power depends on the transmission of power line, in fact, electric power transfer is complicated technically, as having voltage drop (being generally inductive load) owing to power transmission lines, so must add capacitor every a segment distance, to reduce line loss, booster tension, as for transformer common between power transmission lines, then in order to being required electric pressure with power converter.And except the efficiency of transmission of electric power, the important topic that " safety " must be noted that in the electricity consumption especially, with " electric leakage " phenomenon, it not only influences efficient, and more entail dangers to is safe in utilization.Electric leakage problem in the at present relevant electric power transfer, mostly be as checkout gear with residual current circuit breaker, it connects residual current circuit breaker earlier with power supply, connects load by residual current circuit breaker again, when leaky appears in load end, at first detected by residual current circuit breaker, cut off the electricity supply immediately, stop power supply, though these measures can be guaranteed Electrical Safety, but for the electric leakage situation in many places, measures first mentioned also is not suitable for.
As everyone knows, residual current circuit breaker is after cutting off the electricity supply, must be replied by manual type, before starting to reply, the state of outage can't change automatically, as in the family, once discovering outage, can take necessary in response to measure, but for as street lamp, communal facilitys such as identification light, as detect leaky, promptly cut off the power supply, to directly influence its normal operation, in fact, communal facility as the aforementioned, leaky takes place for it may be transience, the for example electric leakage of raining and causing the pipeline humidity to be caused, after rain stopped, its electric leakage situation can be removed, as utilize residual current circuit breaker to detect it when whether electric leakage being arranged, promptly can't restore automatically once outage, impact for the operate as normal of communal facility, and will cause stakeholder's puzzlement.
From the above, the existing residual current circuit breaker of utilizing detects the electric leakage situation, and takes the outage measure that can't automatically reply, but this mode is at particular place and inapplicable.
(3) summary of the invention:
The utility model main purpose is to provide a kind of and detects leaky and do temporary outage, but and the detection of electrical leakage processing unit of automatic recovery of power supply.This device can be intermittently to electric, automatically or after by artificial the eliminating, can recover normal power supply in leaky.
For achieving the above object, the utility model is taked following technical measures:
Detection of electrical leakage processing unit of the present utility model comprises: a current inductor and an amplifying circuit; Also comprise: a relay, a timing circuit and a drive circuit;
The induction end of current inductor is near a detected power line, to respond to whether leakage current is arranged on it;
Relay is connected between input power supply and load with make and break contact, utilizes the break-make of make and break contact, and whether the control power supply delivers to load;
Amplifying circuit connects the output of current inductor;
Timing circuit connects the output of amplifying circuit;
The trigger end of drive circuit is connected with the output of timing circuit, and the output of drive circuit is connected to relay, and is whether excitatory to control it.
Wherein, described amplifying circuit comprises an operational amplifier, and its positive and negative input is connected with described current inductor by an electric capacity and a resistance.
Wherein, described timing circuit comprises that a model is 555 oscillator, and its trigger end is connected with the output of described amplifying circuit, and its output connects described drive circuit.
Wherein, described drive circuit comprises a bidirectional triode thyristor, and its control utmost point connects the output of described timing circuit.
Wherein, described amplifying circuit, timing circuit by a power circuit as working power; This power circuit comprises that a bridge rectifier that is connected with described input power supply, the silicon controlled rectifier that is connected in the bridge rectifier output, one be located at the pressure limiting circuit that the control of silicon controlled rectifier is extremely gone up.
Wherein, described pressure limiting circuit is made of a Zener diode and a resistance.
Compared with prior art, the utlity model has following effect:
The utility model can in time detect leaky, and possesses automatic telegram in reply function, when leaky is removed, can recover normal power supply automatically, in addition, and also can be in order to detect and to prevent electricity consumer electricity filching behavior improperly.
(4) description of drawings
Fig. 1: the circuit diagram of the utility model detection of electrical leakage processing unit embodiment.
(5) embodiment
Reaching embodiment in conjunction with the accompanying drawings is described in detail as follows architectural feature of the present utility model:
As shown in Figure 1, the utility model detection of electrical leakage processing unit comprises:
A current inductor 10, whether be used to detect power line has leaky;
An amplifying circuit 20, it connects the output of current inductor 10;
A timing circuit 30, it connects the output of amplifying circuit 20, detects signal in order to the electric current that receives through processing and amplifying;
A drive circuit 40, it connects the output of timing circuit 30, and is triggered by the output signal of timing circuit 30;
A relay 50, the break-make of current supply circuit between its control power supply and load, its magnetizing coil is connected with drive circuit 40, and whether it moves by drive circuit 40 controls;
A power circuit 60, the working power of aforementioned each circuit of its supply; Wherein:
Amplifying circuit 20 is an operational amplifier, and its positive and negative end input is connected with current inductor 10 through an electric capacity, a resistance respectively; Its output is connected to timing circuit 30;
The input of bridge rectifier 61 is connected to ac power input end via a RC filter, to obtain working power;
Silicon controlled rectifier 62 is in order to control power circuit 60 output voltage whether, and whether the conducting of silicon controlled rectifier 62 is by pressure limiting circuit 63 decisions, in the present embodiment, pressure limiting circuit 63 is made of a Zener diode and a resistance, wherein the conducting voltage of Zener diode is 12 volts, in other words, when bridge rectifier 61 output voltages are higher than 12 volts, the Zener diode conducting, also conducting of silicon controlled rectifier 62, make bridge rectifier 61 output head groundings, and stop direct voltage output, to reach the voltage stabilizing purpose.
About working method of the present utility model and purposes detailed as described below:
Aspect operation principle, the utility model is by leakage current whether occurring on the current inductor 10 induction power supply lines, leakage current appears on line, be that the display power supply line has remarkable leaky, current inductor 10 will be responded to a Weak current signal, after it carries out processing and amplifying via amplifying circuit 20, promptly deliver to timing circuit 30, pick up counting with trigger generator, during timing, oscillator output end continues to send a high potential, to trigger drive circuit 40, it is excitatory to drive relay 50 by drive circuit 40 again, to cut off the power supply of load.
During timing circuit 30 timing, because relay 50 is kept excitatory state, so load is in off-position, when timing circuit 30 timing finish, and stop output signal and give drive circuit 40, then relay 50 is no longer excitatory, its make and break contact 51,52 switchback normal-closed ends, restore electricity immediately and give load, like this, reach the purpose of automatic recovery of power supply.
Though load restores electricity, but current inductor 10 still continues to detect on the power line whether the electric leakage situation is arranged, at this moment, get rid of as the electric leakage situation on the load power source line, be improved like rain stopping the moist situation of rear line, then current inductor 10 promptly can not responded to leakage current, and its each follow-up circuit i.e. no longer action, so can keep normal powered operation.
Otherwise, if the electric leakage situation on the power line is not got rid of yet, then current inductor 10 will induce a current signal, after amplifying, and triggering timing circuit 30 timing once again, and it is excitatory to drive relay 50 by drive circuit 40 during timing, cut off the electricity supply once more, and after timing finishes, restore electricity, like this, periodic duty is till the electric leakage situation is got rid of.
From the above, the utility model can apply to the detection of electrical leakage of communal facility, owing to have automatic telegram in reply function, can make the inconvenience that is caused because of electric leakage, reduces to minimum; In addition, also can be used for preventing the electricity consumer private to connect the electricity filching behavior of capacitor, when electricity consumer single-phase connection capacitor on power line, ammeter can't normally be measured, and on power line, produce unsymmetrical current, and the utility model can utilize and detect this unsymmetrical current, prevents its electricity filching behavior; Because unsymmetrical current as continue existing, will make the utility model repeat outage, powered operation, unless the stealing user stops improper connection capacitor, otherwise aforesaid state carries out circulation, like this, can force the stealing user to stop its improper activity.
Claims (6)
1. a detection of electrical leakage processing unit comprises: a current inductor and an amplifying circuit; It is characterized in that, also comprise: a relay, a timing circuit and a drive circuit;
The induction end of current inductor is near power line, to respond to whether leakage current is arranged on it;
Relay is connected between input power supply and load with make and break contact, utilizes the break-make of make and break contact, and whether the control power supply delivers to load;
Amplifying circuit connects the output of current inductor;
Timing circuit connects the output of amplifying circuit;
The trigger end of drive circuit is connected with the output of timing circuit, and the output of drive circuit is connected to relay, and is whether excitatory to control it.
2. detection of electrical leakage processing unit according to claim 1 is characterized in that, described amplifying circuit comprises an operational amplifier, and its positive and negative input is connected with described current inductor by an electric capacity and a resistance.
3. detection of electrical leakage processing unit according to claim 1 is characterized in that, described timing circuit comprises that a model is 555 oscillator, and its trigger end is connected with the output of described amplifying circuit, and its output connects described drive circuit.
4. detection of electrical leakage processing unit according to claim 1 is characterized in that, described drive circuit comprises a bidirectional triode thyristor, and its control utmost point connects the output of described timing circuit.
5. detection of electrical leakage processing unit according to claim 1 is characterized in that, described amplifying circuit, timing circuit by a power circuit as working power; This power circuit comprises that a bridge rectifier that is connected with described input power supply, the silicon controlled rectifier that is connected in the bridge rectifier output, one be located at the pressure limiting circuit that the control of silicon controlled rectifier is extremely gone up.
6. detection of electrical leakage processing unit according to claim 5 is characterized in that, described pressure limiting circuit is made of a Zener diode and a resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01260919 CN2512143Y (en) | 2001-09-05 | 2001-09-05 | Leakage examination processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01260919 CN2512143Y (en) | 2001-09-05 | 2001-09-05 | Leakage examination processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512143Y true CN2512143Y (en) | 2002-09-18 |
Family
ID=33668969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01260919 Expired - Fee Related CN2512143Y (en) | 2001-09-05 | 2001-09-05 | Leakage examination processor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512143Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103959078A (en) * | 2011-11-03 | 2014-07-30 | 伊莱克斯家用产品股份有限公司 | Ground power leakage detection for peripheral printed circuit boards |
| CN105119109A (en) * | 2015-08-10 | 2015-12-02 | 珠海格力电器股份有限公司 | Electric leakage detection method and socket |
-
2001
- 2001-09-05 CN CN 01260919 patent/CN2512143Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103959078A (en) * | 2011-11-03 | 2014-07-30 | 伊莱克斯家用产品股份有限公司 | Ground power leakage detection for peripheral printed circuit boards |
| CN105119109A (en) * | 2015-08-10 | 2015-12-02 | 珠海格力电器股份有限公司 | Electric leakage detection method and socket |
| CN105119109B (en) * | 2015-08-10 | 2017-12-26 | 珠海格力电器股份有限公司 | Electric leakage detection method and socket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |