CN102074398B - 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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- CN102074398B CN102074398B CN201110027981.5A CN201110027981A CN102074398B CN 102074398 B CN102074398 B CN 102074398B CN 201110027981 A CN201110027981 A CN 201110027981A CN 102074398 B CN102074398 B CN 102074398B
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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 Electric automation technology field, the conductive contact surface performance that refers in particular to the contacts such as a kind of electric switch, relay and electrical connector is isolated real-time online diagnosis system and using method thereof entirely.
Background technology
In electric automatization field, various switching regulator element is widely used, and the reliability of the Key Circuit of many online uninterrupted operations is played to material impact.At present, for the key loop of this type, mainly take to make regular check on the preventive maintenance measure of maintenance, but effect is not remarkable, and need to frequently carries out the shutdown of long period and open and inspect, reduced the availability of equipment.And pro-active intervention formula diagnostic system is when diagnosis, need the normal operation of termination circuit, the higher realization property of the diagnosis frequency is better, also just larger to the interruption interference of circuit, thereby is not suitable for circuit higher to requirement of real time or that free time is less.
In use, the inefficacy of switch element contact face and connector or hydraulic performance decline are often oxidation, the carbon distributions and stained due to conductive contact surfaces.In 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 to artificial mechanism polishing, for the hermetic switchgear of part, can only scrap replacing.This traditional polishing process need to decompose and assemble switch element, complicated operation, and labor intensive, and the fit clearance after assembling is again difficult to guarantee to return to original optimum state; On the other hand, polishing also has extra loss to contact copper face, and contact is only done once and just need to be scrapped to the polishing reparation of twice conventionally; Meanwhile, contact polishing is also higher to operating personnel's specification requirement.
Summary of the invention
The object of the invention is to overcome in prior art shortcoming with not enough, provide a kind of simple and compact for structure, easy to operate easily, without dismounting resolution element, real-time online detects and real-time online fault restoration, efficiency is high and cost is low conductive contact surface performance are isolated real-time online diagnosis system entirely.
Another object of the present invention is to provide above-mentioned conductive contact surface performance entirely to isolate the using method of real-time online diagnosis system.
In order to realize first object, the present invention realizes by following technical scheme:
Entirely isolate a real-time online diagnosis system, include impedance detection parts and electric grinding component; Described impedance detection parts and electric grinding component are connected to be examined on 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, and described electric grinding component two ends respectively with examined relay coil and be connected with 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 outside line, and voltage sensor is connected to be examined on 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 contact malfunction.
In order to realize second object, the present invention realizes by following technical scheme:
A kind of conductive contact surface performance is isolated the using method of real-time online diagnosis system entirely, it is characterized in that comprising the following steps: in a, circuit operation, On current and contact pressure drop when impedance detection parts are examined relay contact closure in real time, and calculate contact resistance value; If b contact resistance value is greater than threshold values, electric grinding component is control relay coil electricity at once, and relay contact is closed, and then triggers to apply and grind high-voltage pulse conductive contact surfaces is ground.
Further, also comprise c step, after a milling cycle finishes, whether impedance detection parts detect contact resistance lower than threshold values, be to finish to grind, otherwise again apply grinding high-voltage pulse, if pass through continuously five milling cycle contact resistances still higher than threshold values, the circular fault of reporting to the police unrepairable, and between milling cycle the time interval be less than 30 seconds.
Further, in described b step, first apply alternating-current pulse electric current being examined on relay contact, 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 is greater than the equivalent capacity of stained, puncture the equivalent diode of pressure-resistant machine cupric oxide when withstand voltage, stained and oxide layer are punctured formation spark discharge by electric current, 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 over 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 coordinates one-time contact between alternating-current pulse electric current at every turn.
Compared with prior art, its beneficial effect is in the present invention:
1, having realized the online of conductive contact surfaces detects and online polishing in real time in real time, online detection operation or the interference of isolating switch formula mill operation to Circuits System have been avoided, improve detection frequency and detected real-time, exempted opening and inspecting and decomposing maintenance equipment part, greatly improve remediation efficiency and reliability, lowered coefficient of losses and cost payout;
2, overall structure is simply compact, easy to operate easy.
In order to understand more clearly the present invention, below with reference to accompanying drawing explanation, set forth the specific embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is that the present invention is circuit structure block diagram.
Embodiment
As shown in Figure 1, conductive contact surface performance of the present invention is isolated real-time online diagnosis system entirely, includes impedance detection parts and electric grinding component; Described impedance detection parts and electric grinding component are connected to be examined on 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, and described electric grinding component two ends respectively with examined relay coil and be connected with 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 outside line, and voltage sensor is connected to be examined on 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 contact malfunction.
The using method that above-mentioned conductive contact surface performance is isolated real-time online diagnosis system entirely comprises the following steps: in a, circuit operation, On current and contact pressure drop when impedance detection parts are examined relay contact closure in real time, and calculate contact resistance value; If b contact resistance value is greater than threshold values, electric grinding component is control relay coil electricity at once, and relay contact is closed, and then triggers to apply and grind high-voltage pulse conductive contact surfaces is ground; After c, a milling cycle finish, whether impedance detection parts detect contact resistance lower than threshold values, to finish to grind, otherwise again apply grinding high-voltage pulse, if pass through continuously five milling cycle contact resistances still higher than threshold values, the circular fault of reporting to the police unrepairable, and between milling cycle the time interval be less than 30 seconds.
In above-mentioned b step, first apply alternating-current pulse electric current being examined on relay contact, 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 is greater than the equivalent capacity of stained, puncture the equivalent diode of pressure-resistant machine cupric oxide when withstand voltage, stained and oxide layer are punctured formation spark discharge by electric current, 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 over 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 coordinates one-time contact between 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 departed to the spirit and scope of the present invention, if within these changes and modification belong to claim of the present invention and equivalent technologies scope, the present invention is also intended to comprise these changes and modification.
Claims (8)
1. a conductive contact surface performance is isolated real-time online diagnosis system entirely, include impedance detection parts and grind by applying the electric grinding component that high-voltage pulse grinds conductive contact surfaces, it is characterized in that: described impedance detection parts and electric grinding component are connected to be examined on relay contact, wherein connect in the lump between end and upper end outside line and be provided with isolating diode, another and connect end and lower end outside line between be provided with overpressure absorbing circuit, and described electric grinding component two ends respectively with examined relay coil and be connected with control relay contact and open and close.
2. conductive contact surface performance is isolated real-time online diagnosis system entirely according to 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 contact malfunction.
3. conductive contact surface performance is isolated the using method of real-time online diagnosis system entirely as claimed in claim 1, it is characterized in that comprising the following steps:
In a, circuit operation, On current and contact pressure drop when impedance detection parts are examined relay contact closure in real time, and calculate contact resistance value;
If b contact resistance value is greater than threshold values, electric grinding component is control relay coil electricity at once, and relay contact is closed, and then triggers to apply and grind high-voltage pulse conductive contact surfaces is ground.
4. conductive contact surface performance is isolated the using method of real-time online diagnosis system entirely according to claim 3, it is characterized in that: also comprise c step, after a milling cycle finishes, whether impedance detection parts detect contact resistance lower than threshold values, be to finish to grind, otherwise again apply grinding high-voltage pulse, if pass through continuously five milling cycle contact resistances still higher than threshold values, the circular fault of reporting to the police unrepairable, and between milling cycle the time interval be less than 30 seconds.
5. conductive contact surface performance is isolated the using method of real-time online diagnosis system entirely according to claim 3, it is characterized in that: in described b step, first on relay contact, apply alternating-current pulse electric current being examined, this electric current forms voltage drop on resistance, at the equivalent capacity two ends of dirt and the formation of local air gap, forms charging voltage; When described charging voltage is greater than the equivalent capacity of stained, puncture the equivalent diode of pressure-resistant machine cupric oxide when withstand voltage, stained and oxide layer are punctured formation spark discharge by electric current, and the stained thing and the Cu oxide that adhere to can be cleared up by electric spark.
6. conductive contact surface performance is isolated the using method of real-time online diagnosis system entirely according to claim 5, 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.
7. conductive contact surface performance is isolated the using method of real-time online diagnosis system entirely according to claim 6, 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.
8. conductive contact surface performance is isolated the using method of real-time online diagnosis system entirely according to claim 7, 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 coordinates one-time contact between 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 CN102074398A (en) | 2011-05-25 |
| CN102074398B true CN102074398B (en) | 2014-02-12 |
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| US10042002B2 (en) | 2014-12-12 | 2018-08-07 | Infineon Technologies Austria Ag | System and method for contact measurement circuit |
Citations (4)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04218230A (en) * | 1990-12-17 | 1992-08-07 | Matsushita Electric Works Ltd | Contact deterioration detector |
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Patent Citations (4)
| 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 |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平4-218230A 1992.08.07 |
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