CN202351394U - Testing device of built-in relay of electric energy meter - Google Patents
Testing device of built-in relay of electric energy meter Download PDFInfo
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- CN202351394U CN202351394U CN2011204166489U CN201120416648U CN202351394U CN 202351394 U CN202351394 U CN 202351394U CN 2011204166489 U CN2011204166489 U CN 2011204166489U CN 201120416648 U CN201120416648 U CN 201120416648U CN 202351394 U CN202351394 U CN 202351394U
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Abstract
The utility model discloses a testing device of a built-in relay of an electric energy meter, which comprises a work table capable of holding a plurality of tested electric energy meters, a PLC (Programmable Logic Controller) control module used for controlling the test of the built-in relay, and an inductive load used for generating an induced electromotive force after current mutation, wherein the contacts of the built-in relays of the plurality of tested electric energy meters are connected in parallel and are connected between an external three-phase power supply and the inductive load; the PLC control module comprises a PLC, a selecting circuit used for selecting the built-in relay of the tested electric energy meter, a control circuit used for controlling the on/off of the built-in relay, a detecting circuit used for detecting the cutoff or adhesion of the built-in relay and a display unit used for displaying a test result; and the corresponding pins of the PLC are respectively connected with the selecting circuit, the control circuit, the detecting circuit and the display unit. The testing device of built-in relay of electric energy meter disclosed by the utility model has the advantages of testing the arcing resistance of the built-in relay and improving the reliability of the electric energy meter.
Description
Technical field
The utility model relates to the device of busy relay, is specifically related to the proving installation of the built-in relay of a kind of electric energy meter.
Background technology
China's economic develop rapidly in the last few years is accompanied by rapid economic development, and when national power consumption grew with each passing day, the electric energy meter demand of built-in relay also significantly increased, so the reliability of the built-in relay of electric energy meter seems more and more important.Simultaneously, along with the consumption of built-in relay electric energy meter increases, its exposed problems is also more and more, when built-in relay goes wrong, will become the weak link of electric energy meter, and the reliability that therefore improves built-in relay is particularly important.
Some manufacturers are tests such as some dielectric voltage withstands, maximum current, contact resistance, mechanical life to the test of relay at present; And the negligible amounts of test specimen, test period are shorter; This can find some problems, but the tension arc ability of contact does not make an experiment.The contact arcing of built-in relay is on-the-spot common stress, and the feedback of using from the scene, built-in relay lost efficacy and was mostly contact failure, and the overvoltage arcing is the main cause that built-in relay contact lost efficacy.Owing to this arcing ability is not made an experiment, will cause the less reliable of electric energy meter.
The utility model content
The utility model technical matters to be solved just provides the proving installation of the built-in relay of a kind of electric energy meter, can the tension arc ability of the built-in relay of electric energy meter be made an experiment, and improves the reliability of electric energy meter.
For solving the problems of the technologies described above; The technical scheme that the utility model is taked is following: the proving installation of the built-in relay of a kind of electric energy meter; It comprises the worktable that can place a plurality of tested electric energy meters, be used to control the PLC control module of built-in relay test, be used for producing behind the current break inductive load of induced electromotive force, is connected between outside three-phase supply and the inductive load after the contact of the built-in relay of each tested electric energy meter is connected with each other; Said PLC control module comprises PLC, be used to select the selection circuit of the built-in relay of electric energy meter, be used to control all built-in relay on/off control circuit, be used to detect that built-in relay breaks off or the testing circuit of adhesion, the display unit that is used to show test results; The respective foot position of said PLC links to each other with selecting circuit, control circuit, testing circuit, display unit respectively; Said PLC selects a built-in relay to test through selecting circuit; And control being switched on or switched off of tested built-in relay contact through control circuit; Again by testing circuit detection feedback result to PLC, show at last the test result of built-in relay by display unit.
The said selection circuit of the utility model is that matrix is selected circuit; This matrix selection circuit comprises capable bus, row bus, is used for the relay gate of the built-in relay of gating; The quantity of this relay gate equates that with the quantity of tested electric energy meter each relay gate is connected between corresponding capable bus and the row bus; Correspondingly, the two ends, contact of all built-in relays are serially connected with two contacts of corresponding relay gate respectively.
The said matrix of the utility model selects circuit also to comprise the diode that equates with relay gate quantity, and said diode is serially connected with between each relay gate and the row bus.
The said control circuit of the utility model comprises power supply, is used to control the pilot relay of all built-in relay on/off, and said power supply links to each other with all built-in relays respectively through pilot relay.
The said testing circuit of the utility model comprises three the detection relays that are switched on or switched off that are used to detect tested built-in relay contact, and these three detection relays link to each other with the corresponding phase line of output after the contact of all built-in relays is connected with each other respectively.
Compared with prior art, the utlity model has following advantage:
1, but the matrix of this device is selected the control mouth of circuit expansion technique of PLC, makes and on worktable, the more electric energy table can be installed, and makes an experiment after being selected by PLC, to improve test efficiency;
2, this device switches on or off built-in relay through control circuit; Make its contacting or disconnection, thereby make current break, inductive load produces higher electromotive force; The contact produces the arcing phenomenon; Through then can be repeatedly to the setting of PLC, circulation makes an experiment to electric energy meter, and by the display unit display result, obtains tension arc ability, the mechanical life of built-in relay;
3, this device has testing circuit, but the built-in relay of fast detecting is unusual, to improve the reliability of electric energy meter.
Description of drawings
Fig. 1 is the connection synoptic diagram of the proving installation of the built-in relay of the utility model electric energy meter;
Fig. 2 is the connection synoptic diagram of the utility model PLC control module;
Fig. 3 is that the matrix of the utility model specific embodiment is selected circuit diagram.
Embodiment
Proving installation like Fig. 1, the built-in relay of a kind of electric energy meter shown in Figure 2; It comprises the worktable that can place 32 tested electric energy meters, be used to control the PLC control module of built-in relay test, be used for producing behind the current break inductive load of induced electromotive force, is connected between outside three-phase supply and the inductive load after the contact of the built-in relay of each tested electric energy meter is connected with each other.
The PLC control module comprises PLC, be used to select the selection circuit of the built-in relay of electric energy meter, be used to control all built-in relay on/off control circuit, be used to detect that built-in relay breaks off or the testing circuit of adhesion, the display unit that is used to show test results, the PLC model is FX2-32MR; The respective foot position of PLC links to each other with selecting circuit, control circuit, testing circuit, display unit respectively, through setting that PLC is programmed, reaches the flow process control of testing experiment.
As shown in Figure 3; Selecting circuit is that matrix is selected circuit, is used for the control pin position of expansion technique of PLC, and this matrix selection circuit comprises capable bus, row bus, is used for the relay gate Z1～Z32 of the built-in relay of gating; The quantity of this relay gate equates with the quantity of tested electric energy meter, all is 32; Each relay gate is connected between corresponding capable bus and the row bus; Correspondingly, the two ends, contact of all built-in relays are serially connected with two contact J1～J32 of corresponding relay gate respectively, i.e. the corresponding relay gate Z1 of contact J1, the corresponding relay gate Z2 of contact J2, and the like.Matrix selects circuit also to comprise the diode that equates with relay gate quantity, and diode is serially connected with between each relay gate and the row bus, to prevent the interference between each relay gate.When gating relay during by gating, two closings of contact of relay gate, corresponding built-in relay is switched on, and will be disconnected by the built-in relay of other relay gate gating and not insert outside three-phase supply, reaches the effect of isolation; Also can be connected in series relay at the two ends, contact of built-in relay, (contact that promptly replaces relay gate) by other relay, the relay of serial connection plays the effect of isolating other electric energy meter equally by the relay gate control of correspondence.
Control circuit comprises a 12V direct supply, is used to control pilot relay K4, the K5 of all built-in relay on/off; Power supply links to each other with all built-in relays respectively through pilot relay; All built-in relays are controlled by pilot relay the closure or the off action of its contact; And the break-make of pilot relay is by programming setting and the output control of relevant PLC pin position of PLC, to realize being switched on or switched off the do action of inductive load.
Testing circuit comprises three the detection relay K A, KB, the KC that are switched on or switched off that is used to detect tested built-in relay contact; These three detection relays link to each other with the corresponding phase line of output after the contact of all built-in relays is connected with each other respectively; Be used for detecting respectively the on/off of three-phase output line; With whether phase shortage or the adhesion of the contact of confirming built-in relay, and feed back to the respective foot position of PLC, show the number of times and the Test Information of experiments of measuring by PLC control display unit through three detection relays; When phase shortage or adhesion appearred in the contact of built-in relay, PLC control control circuit and matrix selected circuit to stop test.
Through programming is provided with to PLC; Make PLC by selecting circuit cycles to select each built-in relay to test; And control being switched on or switched off of tested built-in relay contact through control circuit; Again by testing circuit detection feedback result to PLC, show at last the test result of built-in relay by display unit, obtain tension arc ability, the test result of mechanical life of corresponding built-in relay.
The embodiment of the utility model is not limited thereto; Under the above-mentioned basic fundamental thought of the utility model prerequisite; According to modification, replacement or the change of the ordinary skill knowledge of this area and customary means, all within the utility model rights protection scope to the utility model other various ways that content is made.
Claims (5)
1. the proving installation of the built-in relay of electric energy meter; It is characterized in that: it comprises the worktable that can place a plurality of tested electric energy meters, be used to control the PLC control module of built-in relay test, be used for producing behind the current break inductive load of induced electromotive force, is connected between outside three-phase supply and the inductive load after the contact of the built-in relay of each tested electric energy meter is connected with each other; Said PLC control module comprises PLC, be used to select the selection circuit of the built-in relay of electric energy meter, be used to control all built-in relay on/off control circuit, be used to detect that built-in relay breaks off or the testing circuit of adhesion, the display unit that is used to show test results; The respective foot position of said PLC links to each other with selecting circuit, control circuit, testing circuit, display unit respectively; Said PLC selects a built-in relay to test through selecting circuit; And control being switched on or switched off of tested built-in relay contact through control circuit; Again by testing circuit detection feedback result to PLC, show at last the test result of built-in relay by display unit.
2. the proving installation of the built-in relay of electric energy meter according to claim 1; It is characterized in that: said selection circuit is that matrix is selected circuit; This matrix selection circuit comprises capable bus, row bus, is used for the relay gate of the built-in relay of gating; The quantity of this relay gate equates that with the quantity of tested electric energy meter each relay gate is connected between corresponding capable bus and the row bus; Correspondingly, the two ends, contact of all built-in relays are serially connected with two contacts of corresponding relay gate respectively.
3. the proving installation of the built-in relay of electric energy meter according to claim 2 is characterized in that: said matrix selects circuit also to comprise the diode that equates with relay gate quantity, and said diode is serially connected with between each relay gate and the row bus.
4. the proving installation of the built-in relay of electric energy meter according to claim 1; It is characterized in that: said control circuit comprises power supply, is used to control the pilot relay of all built-in relay on/off, and said power supply links to each other with all built-in relays respectively through pilot relay.
5. according to the proving installation of the built-in relay of each described electric energy meter of claim 1 to 4; It is characterized in that: said testing circuit comprises three the detection relays that are switched on or switched off that are used to detect tested built-in relay contact, the output phase line after the contact of corresponding respectively all the built-in relays of connection of these three detection relays is connected with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204166489U CN202351394U (en) | 2011-10-27 | 2011-10-27 | Testing device of built-in relay of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204166489U CN202351394U (en) | 2011-10-27 | 2011-10-27 | Testing device of built-in relay of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202351394U true CN202351394U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204166489U Expired - Lifetime CN202351394U (en) | 2011-10-27 | 2011-10-27 | Testing device of built-in relay of electric energy meter |
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| CN (1) | CN202351394U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197238A (en) * | 2013-03-13 | 2013-07-10 | 上海沪工汽车电器有限公司 | Automotive relay coil energy releasing testing method |
| CN106483456A (en) * | 2016-09-23 | 2017-03-08 | 广东核电合营有限公司 | Million kilowatt nuclear power station time-delay relay trouble-shooter and method |
| CN107966656A (en) * | 2017-11-30 | 2018-04-27 | 蒋小辉 | A kind of matrix form electromagnetic relay intelligent comprehensive parameter detection device |
| CN115248373A (en) * | 2021-04-27 | 2022-10-28 | 宁德时代新能源科技股份有限公司 | Relay adhesion detection method and device |
-
2011
- 2011-10-27 CN CN2011204166489U patent/CN202351394U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197238A (en) * | 2013-03-13 | 2013-07-10 | 上海沪工汽车电器有限公司 | Automotive relay coil energy releasing testing method |
| CN103197238B (en) * | 2013-03-13 | 2016-01-06 | 上海沪工汽车电器有限公司 | A kind of automotive relay coil releases energy method of testing |
| CN106483456A (en) * | 2016-09-23 | 2017-03-08 | 广东核电合营有限公司 | Million kilowatt nuclear power station time-delay relay trouble-shooter and method |
| CN107966656A (en) * | 2017-11-30 | 2018-04-27 | 蒋小辉 | A kind of matrix form electromagnetic relay intelligent comprehensive parameter detection device |
| CN115248373A (en) * | 2021-04-27 | 2022-10-28 | 宁德时代新能源科技股份有限公司 | Relay adhesion detection method and device |
| CN115248373B (en) * | 2021-04-27 | 2024-03-19 | 宁德时代新能源科技股份有限公司 | Relay adhesion detection method and device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
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| CX01 | Expiry of patent term |