CN204287370U - A kind of straight-flow system exchanges the pick-up unit scurried into - Google Patents
A kind of straight-flow system exchanges the pick-up unit scurried into Download PDFInfo
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- CN204287370U CN204287370U CN201420765028.XU CN201420765028U CN204287370U CN 204287370 U CN204287370 U CN 204287370U CN 201420765028 U CN201420765028 U CN 201420765028U CN 204287370 U CN204287370 U CN 204287370U
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- circuit
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- scurried
- pick
- flow sensor
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- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model relates to a kind of straight-flow system and exchanges the pick-up unit and implementation method scurried into.The utility model comprises insulating monitoring circuit and two ac leakage flow sensor, described insulating monitoring circuit comprises signal sample circuit, signal processing circuit, communication interface circuit, power circuit and cpu circuit, described signal sample circuit comprises two resistor bridges and each resistor bridge is all connected in bus and ground wire, form bus to ground circuit, described ac leakage flow sensor is socketed in described insulating monitoring circuit busbar respectively to ground circuit is electrically connected with described insulating monitoring circuit.Whether a kind of straight-flow system of the present utility model exchanges the pick-up unit scurried into, can detect eaily in straight-flow system to have to exchange scurry into and can record time that interchange scurries into, scurry into the relevant informations such as voltage, and simply, safe reliability is higher in wiring.
Description
Technical field
The utility model relates to a kind of straight-flow system and exchanges the pick-up unit scurried into.
Background technology
In electric system, the reliability service of straight-flow system, plays vital effect to the safety and stability of whole system, feeding out of straight-flow system relates to multiple subsystem, circuit coverage rate is relatively wider, walks thread environment more complicated, and straight-flow system insulation reduces and earth fault phenomenon happens occasionally; For this problem, straight-flow system is typically equipped with insulating monitoring circuit, for monitoring insulation reduction and the earth fault of straight-flow system.If there is straight-flow system interchange to scurry into fault, phenomenon is that insulation reduces or ground connection intuitively, and its harm is much larger than simple DC earthing.It is increase capacitance, resistor voltage divider circuit at bus to ground circuit that detection method is scurried in the interchange of straight-flow system conventional at present, and follow-up signal processing circuit, isolation sample circuit, extract bus to detect the alternating current voltage component in ground circuit, thus determine whether that interchange occurs scurries into, such a process increases the distributed capacitance of bus to ground circuit, the reliability service of influential system, circuit more complicated, is unfavorable for upgrading and the Reconstruction in field of original insulating monitoring circuit.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of straight-flow system and exchanges the pick-up unit scurried into, testing circuit and system busbar are completely isolated on electrically, solve circuit complexity, later maintenance is inconvenient, improve the reliability of system cloud gray model, be conducive to upgrading and the Reconstruction in field of original insulating monitoring circuit.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of straight-flow system exchanges the pick-up unit scurried into, comprise insulating monitoring circuit and ac leakage flow sensor CT1 and CT2, described insulating monitoring circuit comprises signal sample circuit, resistor bridge R1 and R2 in described signal sample circuit is all connected in bus and ground wire and forms bus to ground circuit, and described ac leakage flow sensor CT1 and CT2 is socketed in described insulating monitoring circuit busbar respectively on ground circuit.
The beneficial effects of the utility model are: adopt ac leakage flow sensor to be directly socketed in the bus of signal sample circuit in insulating monitoring circuit on ground circuit, pick-up unit and bus are completely isolated on electrically, circuit is simple and practical, and the reliability of system cloud gray model is high, convenient later maintenance.
On the basis of technique scheme, the utility model can also do following improvement:
Further, described insulating monitoring circuit also comprises signal processing circuit, power circuit and cpu circuit, described signal processing circuit is connected with cpu circuit respectively with power circuit, and described ac leakage flow sensor CT1, CT2 are all connected to signal processing circuit and power circuit.
Further, described insulating monitoring circuit also comprises communication interface circuit, power circuit and cpu circuit, described communication interface circuit is connected with cpu circuit respectively with power circuit, and described ac leakage flow sensor CT1, CT2 are all connected to communication interface circuit and power circuit.
Further, the measurement range of described ac leakage flow sensor CT1, CT2 is determined according to the resistance of resistor bridge R1 and R2, and the maximum range of described ac leakage flow sensor CT1, CT2 scurries into electric current close to maximum interchange.
The beneficial effect of above-mentioned further technical scheme is adopted to be: the interchange in Real-Time Monitoring straight-flow system can scurry into situation, not by the limitation of ac leakage flow sensor output form, can select flexibly, convenient and practical, detection efficiency is high, testing result is accurate and visual, does not affect the reliability of bus, achieves intellectualized detection.
Accompanying drawing explanation
Fig. 1 is the partially connected architecture schematic diagram that a kind of straight-flow system of the utility model exchanges the pick-up unit scurried into;
Fig. 2 exchanges the pick-up unit syndeton schematic diagram scurried into for straight-flow system a kind of described in the utility model embodiment 1;
Fig. 3 exchanges the pick-up unit syndeton schematic diagram scurried into for straight-flow system a kind of described in the utility model embodiment 2.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of straight-flow system exchanges the partially connected architecture schematic diagram of the pick-up unit scurried into, it is characterized in that: comprise insulating monitoring circuit and ac leakage flow sensor CT1 and CT2, described insulating monitoring circuit comprises signal sample circuit, resistor bridge R1 and R2 in described signal sample circuit is all connected in bus and ground wire and forms bus to ground circuit, and described ac leakage flow sensor CT1 and CT2 is socketed in described insulating monitoring circuit busbar respectively on ground circuit.
In the utility model, different with the output form of CT2 according to ac leakage flow sensor CT1, described straight-flow system exchanges the pick-up unit scurried into two kinds of different syndetons.
Preferably, when described ac leakage flow sensor is analog output ac leakage flow sensor, as shown in Figure 2, described insulating monitoring circuit also comprises signal processing circuit, power circuit and cpu circuit, described signal processing circuit is connected with cpu circuit respectively with power circuit, and described ac leakage flow sensor CT1, CT2 are all connected to signal processing circuit and power circuit.
Preferably, when described ac leakage flow sensor is digital output ac leakage flow sensor, as shown in Figure 3, described insulating monitoring circuit also comprises communication interface circuit, power circuit and cpu circuit, described communication interface circuit is connected with cpu circuit respectively with power circuit, and described ac leakage flow sensor CT1, CT2 are all connected to communication interface circuit and power circuit.
In the utility model, the measurement range of described ac leakage flow sensor CT1, CT2 is determined according to the resistance of resistor bridge resistance R1, R2, described resistor bridge R1, R2 are fixed value, 220V system is 33K Ω, 110V system is 20K Ω, and in order to make measurement result more accurate, the maximum range of described ac leakage flow sensor CT1, CT2 should be tried one's best and be scurried into electric current close to maximum interchange, wherein, electric current is scurried in described maximum interchange is the ratio that voltage and resistor bridge R1 or R2 are scurried in maximum interchange.
In the utility model, a kind of straight-flow system exchanges scurries into pick-up unit, ac leakage flow sensor is adopted directly to be socketed in the bus of signal sample circuit in insulating monitoring circuit on ground circuit, pick-up unit and bus are completely isolated on electrically, circuit is simple, convenient and practical, the reliability of system cloud gray model is high, achieves intellectualized detection.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a straight-flow system exchanges the pick-up unit scurried into, it is characterized in that: comprise insulating monitoring circuit and ac leakage flow sensor CT1 and CT2, described insulating monitoring circuit comprises signal sample circuit, resistor bridge R1 and R2 in described signal sample circuit is all connected in bus and ground wire and forms bus to ground circuit, and described ac leakage flow sensor CT1 and CT2 is socketed in described insulating monitoring circuit busbar respectively on ground circuit.
2. a kind of straight-flow system according to claim 1 exchanges the pick-up unit scurried into, it is characterized in that: described insulating monitoring circuit also comprises signal processing circuit, power circuit and cpu circuit, described signal processing circuit is connected with cpu circuit respectively with power circuit, and described ac leakage flow sensor CT1, CT2 are all connected to signal processing circuit and power circuit.
3. a kind of straight-flow system according to claim 1 exchanges the pick-up unit scurried into, it is characterized in that: described insulating monitoring circuit also comprises communication interface circuit, power circuit and cpu circuit, described communication interface circuit is connected with cpu circuit respectively with power circuit, and described ac leakage flow sensor CT1, CT2 are all connected to communication interface circuit and power circuit.
4. a kind of straight-flow system according to claim 1 exchanges the pick-up unit scurried into, it is characterized in that: the measurement range of described ac leakage flow sensor CT1, CT2 is determined according to the resistance of resistor bridge R1 and R2, the maximum range of described ac leakage flow sensor CT1, CT2 scurries into electric current close to maximum interchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420765028.XU CN204287370U (en) | 2014-12-08 | 2014-12-08 | A kind of straight-flow system exchanges the pick-up unit scurried into |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420765028.XU CN204287370U (en) | 2014-12-08 | 2014-12-08 | A kind of straight-flow system exchanges the pick-up unit scurried into |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204287370U true CN204287370U (en) | 2015-04-22 |
Family
ID=52870519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420765028.XU Active CN204287370U (en) | 2014-12-08 | 2014-12-08 | A kind of straight-flow system exchanges the pick-up unit scurried into |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204287370U (en) |
-
2014
- 2014-12-08 CN CN201420765028.XU patent/CN204287370U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Detection Device for AC Channeling in DC System Effective date of registration: 20220926 Granted publication date: 20150422 Pledgee: China Postal Savings Bank Co.,Ltd. Yantai Branch Pledgor: YANTAI DONGFANG YOKELIN ELECTONIC CO.,LTD. Registration number: Y2022980016176 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231026 Granted publication date: 20150422 Pledgee: China Postal Savings Bank Co.,Ltd. Yantai Branch Pledgor: YANTAI DONGFANG YOKELIN ELECTONIC CO.,LTD. Registration number: Y2022980016176 |