CN102074398A - Full-isolated real-time online diagnosis repairing system for conductive contact surface performance and use method thereof - Google Patents
Full-isolated real-time online diagnosis repairing system for conductive contact surface performance and use method thereof Download PDFInfo
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- CN102074398A CN102074398A CN2011100279815A CN201110027981A CN102074398A CN 102074398 A CN102074398 A CN 102074398A CN 2011100279815 A CN2011100279815 A CN 2011100279815A CN 201110027981 A CN201110027981 A CN 201110027981A CN 102074398 A CN102074398 A CN 102074398A
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Abstract
The invention discloses a full-isolated real-time online diagnosis repairing system for conductive contact surface performance, and a use method thereof, wherein the system comprises an impedance detecting component and an electric grinding component; the impedance detecting component and the electric grinding component are connected to a relay contact to be detected in parallel; an isolation diode is disposed between one of the paralleling connection ends and an upper end external circuit, and an overvoltage absorbing circuit is disposed between the other paralleling connection end and a lower end external circuit; and two ends of the electric grinding component are respectively connected to a detected relay coil for controlling the opening/closing of the relay contact. Compared with the prior art, the system and the method of the invention have the beneficial effects that: 1, the online real-time detection and the online real-time grinding of the conductive contact surface are realized; the interferences of online detection operations or isolating switch type grinding operations to the circuit system are avoided; the detection frequency and the detection real-time performance are improved; overhaul and detached maintenance to equipment parts are avoided; the repairing efficiency and reliability are greatly improved; and the loss rate and the cost investment are reduced; and 2. the whole structure is simple and compact, and the operation is convenient and easy.
Description
Technical field
The present invention relates to a kind of inline diagnosis repair system and using method thereof, belong to the Electric automation technology field, the conductive contact surfaces performance that refers in particular to contact such as a kind of electric switch, relay and electrical connector is isolated real-time online diagnosis repair system and using method thereof entirely.
Background technology
In the electric automatization field, various switching regulator element is extensively used, and the reliability of many online Key Circuit that run without interruption is played material impact.At present, mainly take to make regular check on the preventive maintenance measure of maintenance for the key loop of this type, but effect is not remarkable, and need frequently carries out the shutdown of long period and open and inspect, reduced the availability of equipment.And pro-active intervention formula diagnostic system needs the normal operation of termination circuit when diagnosis, and the high more realization of the diagnosis frequency is good more, and is also just big more to the interruption interference of circuit, thereby is not suitable for the circuit of having relatively high expectations in real time or free time is less.
In use, the inefficacy of switch element contact contact-making surface and connector or decreased performance often are because oxidation, the carbon distribution and stained of conductive contact surfaces.In the prior art, traditional restorative procedure is to decompose after switch element is disassembled, and takes out the contact pin of contact or connector, and conductive contact surfaces is carried out the artificial mechanism polishing, then can only scrap replacing for the hermetic switchgear of part.This traditional polishing process need decompose and assembling again switch element, complicated operation, and labor intensive, and the fit clearance after assembling again is difficult to guarantee to return to original optimum state; On the other hand, polishing also has extra loss to the contact copper face, and contact is only done once and just need be scrapped to twice polishing reparation usually; Simultaneously, the contact polishing is also higher to operating personnel's specification requirement.
Summary of the invention
The objective of the invention is to overcome in the prior art shortcoming with not enough, provide a kind of simple and compact for structure, easy to operate easily, need not to dismantle resolution element, real-time online detects and the low conductive contact surfaces performance of real-time online fault restoration, efficient height and cost is isolated real-time online diagnosis repair system entirely.
Another object of the present invention is to provide above-mentioned conductive contact surfaces performance to isolate the using method of real-time online diagnosis repair system entirely.
In order to realize first purpose, the present invention realizes by following technical scheme:
A kind of conductive contact surfaces performance is isolated real-time online diagnosis repair system entirely, includes impedance detection parts and electric grinding component; Described impedance detection parts and electric grinding component are connected to be examined on the relay contact, wherein connect in the lump between end and upper end outside line and be provided with isolating diode, another also connects between end and lower end outside line and is provided with overpressure absorbing circuit, reach described electric grinding component two ends respectively with examined relay coil and be connected with the control relay contact and open and close.
Further, described impedance detection parts are provided with current transformer and voltage sensor, and current transformer is serially connected with in the outside line, and voltage sensor is connected to be examined on the relay contact.
Further, described isolating diode is connected in series with current transformer, overpressure absorbing circuit with examined relay coil and be connected.
Further, described impedance detection parts are provided with and are used to indicate the alarm lamp of being examined the contact malfunction.
In order to realize second purpose, the present invention realizes by following technical scheme:
A kind of conductive contact surfaces performance is isolated the using method of real-time online diagnosis repair system entirely, it is characterized in that may further comprise the steps: in a, the circuit operation, conducting electric current and contact pressure drop when the impedance detection parts are examined the relay contact closure in real time, and calculate contact resistance value; If the b contact resistance value is greater than threshold values, electric grinding component is the control relay coil electricity at once, the relay contact closure, and then trigger to apply and grind high-voltage pulse conductive contact surfaces is ground.
Further, also comprise the c step, after a milling cycle finishes, the impedance detection parts detect contact resistance and whether are lower than threshold values, be then to finish to grind, otherwise apply the grinding high-voltage pulse once more, if still be higher than threshold values by five milling cycle contact resistances continuously, the circular fault of then reporting to the police can not be repaired, and between the milling cycle time interval be less than 30 seconds.
Further, in the described b step, earlier apply the alternating-current pulse electric current on the relay contact being examined, this electric current forms voltage drop on resistance, and the equivalent capacity two ends that form in dirt and local air gap form charging voltage; When described charging voltage punctures the equivalent diode of pressure-resistant machine cupric oxide when withstand voltage greater than stained equivalent capacity, stained and oxide layer are punctured by electric current and form spark discharge, and the stained thing and the Cu oxide that adhere to can be cleared up by electric spark.
Further, the current value of described alternating-current pulse electric current can not be above 3 times of contact rated current capacity.
Further, the pulsewidth of described alternating-current pulse electric current is 100ms, and the positive and negative alternating-current pulse logarithm that single applies is 3, is spaced apart 100ms.
Further, the number of times that always applies of described alternating-current pulse electric current is 3 times, applies the on-off action that cooperates one-time contact between the alternating-current pulse electric current at every turn.
The present invention compared with prior art, its beneficial effect is:
1, the online in real time that has realized conductive contact surfaces detects and the online in real time polishing, avoided the interference of online detecting operation or isolating switch formula mill operation to Circuits System, improve the detection frequency and detected real-time, exempted opening and inspecting and decompose maintenance to equipment part, improve remediation efficiency and reliability greatly, lowered coefficient of losses and cost expenditure;
2, overall structure is simply compact, and is easy to operate easy.
In order to understand the present invention more clearly, set forth the specific embodiment of the present invention below with reference to description of drawings.
Description of drawings
Fig. 1 is that the present invention is the circuit structure block diagram.
Embodiment
As shown in Figure 1, conductive contact surfaces performance of the present invention is isolated real-time online diagnosis repair system entirely, includes impedance detection parts and electric grinding component; Described impedance detection parts and electric grinding component are connected to be examined on the relay contact, wherein connect in the lump between end and upper end outside line and be provided with isolating diode D, another also connects between end and lower end outside line and is provided with overpressure absorbing circuit, reach described electric grinding component two ends respectively with examined relay coil and be connected with the control relay contact and open and close.
Above-mentioned impedance detection parts are provided with current transformer and voltage sensor, and current transformer is serially connected with in the outside line, and voltage sensor is connected to be examined on the relay contact.Further, described isolating diode D is connected in series with current transformer, overpressure absorbing circuit with examined relay coil and be connected.Preferably, described impedance detection parts are provided with and are used to indicate the alarm lamp T that is examined the contact malfunction.
The using method that above-mentioned conductive contact surfaces performance is isolated real-time online diagnosis repair system entirely may further comprise the steps: in a, the circuit operation, conducting electric current and contact pressure drop when the impedance detection parts are examined the relay contact closure in real time, and calculate contact resistance value; If the b contact resistance value is greater than threshold values, electric grinding component is the control relay coil electricity at once, the relay contact closure, and then trigger to apply and grind high-voltage pulse conductive contact surfaces is ground; After c, a milling cycle finish, the impedance detection parts detect contact resistance and whether are lower than threshold values, be then to finish to grind, otherwise apply the grinding high-voltage pulse once more, if still be higher than threshold values by five milling cycle contact resistances continuously, the circular fault of then reporting to the police can not be repaired, and between the milling cycle time interval be less than 30 seconds.
In the above-mentioned b step, earlier apply the alternating-current pulse electric current on the relay contact being examined, this electric current forms voltage drop on resistance, and the equivalent capacity two ends that form in dirt and local air gap form charging voltage; When described charging voltage punctures the equivalent diode of pressure-resistant machine cupric oxide when withstand voltage greater than stained equivalent capacity, stained and oxide layer are punctured by electric current and form spark discharge, and the stained thing and the Cu oxide that adhere to can be cleared up by electric spark.
Further, the current value of described alternating-current pulse electric current can not be above 3 times of contact rated current capacity; The pulsewidth of described alternating-current pulse electric current is 100ms, and the positive and negative alternating-current pulse logarithm that single applies is 3, is spaced apart 100ms; The number of times that always applies of described alternating-current pulse electric current is 3 times, applies the on-off action that cooperates one-time contact between the alternating-current pulse electric current at every turn.
The present invention is not limited to above-mentioned execution mode, if various changes of the present invention or modification are not broken away from the spirit and scope of the present invention, if these are changed and modification belongs within claim of the present invention and the equivalent technologies scope, then the present invention also is intended to comprise these changes and modification.
Claims (10)
1. a conductive contact surfaces performance is isolated real-time online diagnosis repair system entirely, include impedance detection parts and electric grinding component, it is characterized in that: described impedance detection parts and electric grinding component are connected to be examined on the relay contact, wherein connect in the lump between end and upper end outside line and be provided with isolating diode, another also connects between end and lower end outside line and is provided with overpressure absorbing circuit, reach described electric grinding component two ends respectively with examined relay coil and be connected with the control relay contact and open and close.
2. isolate real-time online diagnosis repair system entirely according to the described conductive contact surfaces performance of claim 1, it is characterized in that: described impedance detection parts are provided with current transformer and voltage sensor, current transformer is serially connected with in the outside line, and voltage sensor is connected to be examined on the relay contact.
3. isolate real-time online diagnosis repair system entirely according to the described conductive contact surfaces performance of claim 2, it is characterized in that: described isolating diode is connected in series with current transformer, overpressure absorbing circuit with examined relay coil and be connected.
4. isolate real-time online diagnosis repair system entirely according to the described conductive contact surfaces performance of claim 1, it is characterized in that: described impedance detection parts are provided with and are used to indicate the alarm lamp of being examined the contact malfunction.
5. a conductive contact surfaces performance is isolated the using method that real-time online is diagnosed repair system entirely, it is characterized in that may further comprise the steps:
In a, the circuit operation, conducting electric current and contact pressure drop when the impedance detection parts are examined the relay contact closure in real time, and calculate contact resistance value;
If the b contact resistance value is greater than threshold values, electric grinding component is the control relay coil electricity at once, the relay contact closure, and then trigger to apply and grind high-voltage pulse conductive contact surfaces is ground.
6. the using method of isolating real-time online diagnosis repair system according to the described conductive contact surfaces performance of claim 5 entirely, it is characterized in that: also comprise the c step, after a milling cycle finishes, the impedance detection parts detect contact resistance and whether are lower than threshold values, be then to finish to grind, otherwise apply the grinding high-voltage pulse once more, if still be higher than threshold values by five milling cycle contact resistances continuously, the circular fault of then reporting to the police can not be repaired, and between the milling cycle time interval be less than 30 seconds.
7. the using method of isolating real-time online diagnosis repair system according to the described conductive contact surfaces performance of claim 5 entirely, it is characterized in that: in the described b step, earlier apply the alternating-current pulse electric current on the relay contact being examined, this electric current forms voltage drop on resistance, form charging voltage at the equivalent capacity two ends of dirt and the formation of local air gap; When described charging voltage punctures the equivalent diode of pressure-resistant machine cupric oxide when withstand voltage greater than stained equivalent capacity, stained and oxide layer are punctured by electric current and form spark discharge, and the stained thing and the Cu oxide that adhere to can be cleared up by electric spark.
8. isolate the using method of real-time online diagnosis repair system according to the described conductive contact surfaces performance of claim 7 entirely, it is characterized in that: the current value of described alternating-current pulse electric current can not surpass 3 times of contact rated current capacity.
9. described according to Claim 8 conductive contact surfaces performance is isolated the using method of real-time online diagnosis repair system entirely, and it is characterized in that: the pulsewidth of described alternating-current pulse electric current is 100ms, and the positive and negative alternating-current pulse logarithm that single applies is 3, is spaced apart 100ms.
10. the using method of isolating real-time online diagnosis repair system according to the described conductive contact surfaces performance of claim 9 entirely, it is characterized in that: the number of times that always applies of described alternating-current pulse electric current is 3 times, applies the on-off action that cooperates one-time contact between the alternating-current pulse electric current at every turn.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110027981.5A CN102074398B (en) | 2011-01-26 | 2011-01-26 | Full-isolated real-time online diagnosis repairing system for conductive contact surface performance and use method thereof |
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| CN201110027981.5A CN102074398B (en) | 2011-01-26 | 2011-01-26 | Full-isolated real-time online diagnosis repairing system for conductive contact surface performance and use method thereof |
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| CN102074398A true CN102074398A (en) | 2011-05-25 |
| CN102074398B CN102074398B (en) | 2014-02-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699778A (en) * | 2014-12-12 | 2016-06-22 | 英飞凌科技奥地利有限公司 | System and method for contact measurement circuit |
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| CN2069637U (en) * | 1990-05-11 | 1991-01-16 | 中国工商银行青岛市分行 | Oxidized resistance auto-removing device for data communication line |
| JPH04218230A (en) * | 1990-12-17 | 1992-08-07 | Matsushita Electric Works Ltd | Contact deterioration detector |
| CN2242520Y (en) * | 1995-07-21 | 1996-12-11 | 冯胜林 | Device for repairing electron tube |
| CN101571572A (en) * | 2009-06-02 | 2009-11-04 | 奇瑞汽车股份有限公司 | Detection device and detection method for state of relay contact in automotive high voltage circuit |
| CN101870079A (en) * | 2010-05-25 | 2010-10-27 | 广州市地下铁道总公司 | Alternating-current electric grinding method for conductive contact surfaces |
-
2011
- 2011-01-26 CN CN201110027981.5A patent/CN102074398B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069637U (en) * | 1990-05-11 | 1991-01-16 | 中国工商银行青岛市分行 | Oxidized resistance auto-removing device for data communication line |
| JPH04218230A (en) * | 1990-12-17 | 1992-08-07 | Matsushita Electric Works Ltd | Contact deterioration detector |
| CN2242520Y (en) * | 1995-07-21 | 1996-12-11 | 冯胜林 | Device for repairing electron tube |
| CN101571572A (en) * | 2009-06-02 | 2009-11-04 | 奇瑞汽车股份有限公司 | Detection device and detection method for state of relay contact in automotive high voltage circuit |
| CN101870079A (en) * | 2010-05-25 | 2010-10-27 | 广州市地下铁道总公司 | Alternating-current electric grinding method for conductive contact surfaces |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699778A (en) * | 2014-12-12 | 2016-06-22 | 英飞凌科技奥地利有限公司 | System and method for contact measurement circuit |
| US10042002B2 (en) | 2014-12-12 | 2018-08-07 | Infineon Technologies Austria Ag | System and method for contact measurement circuit |
| CN105699778B (en) * | 2014-12-12 | 2019-06-18 | 英飞凌科技奥地利有限公司 | System and method for contact measurement circuit |
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| CN102074398B (en) | 2014-02-12 |
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