CN202502156U - Testing device for resistors of dc traction backflow track - Google Patents
Testing device for resistors of dc traction backflow track Download PDFInfo
- Publication number
- CN202502156U CN202502156U CN2012200538472U CN201220053847U CN202502156U CN 202502156 U CN202502156 U CN 202502156U CN 2012200538472 U CN2012200538472 U CN 2012200538472U CN 201220053847 U CN201220053847 U CN 201220053847U CN 202502156 U CN202502156 U CN 202502156U
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- resistance
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- wheel
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Abstract
A testing device for resistors of a dc traction backflow track comprises a locomotive and a testing power supply arranged on the locomotive. The testing power supply is connected with a front wheel and a back wheel of the locomotive via leads. A first resistor and a second resistor are connected in series between a cathode and an anode of the testing power supply, wherein a potential testing instrument which is connected with a middle wheel via a lead is arranged in a connecting point of the first resistor and the second resistor. the testing power supply supplies current to flow through the front wheel, the track, the middle wheel, a track seam, and the back wheel. and a parallel loop in which the first resistor is in series connection with the second resistor is additionally arranged. Whether a track seam resistor accords with the requirement is judged by testing potentials of the middle wheel and the connecting point of the first resistor and the second resistor. The testing device can be not only used for acceptance tests during track engineering constructions, but also for regular tests during operational periods, so that possible abnormal problems of the track resistors can be found and handled immediately. The testing device also has the advantages of simple structure, accurate testing data, convenient operation, and good effects.
Description
Technical field
The utility model relates to a kind of resistance test device and method, especially a kind of proving installation and method that is applicable to the DC traction backflow track seam resistance of urban track traffic.
Background technology
Track is the return flow line of urban track traffic direct-current traction power supply; Its backflow performance is mainly determined by track resistance; And track resistance is mainly decided by track connected mode arranged side by side, orbital characteristics resistance and seam resistance; Wherein, track connected mode and orbital characteristics resistance all are determined values side by side, and track seam resistance is because the various uncertain factors in the work progress cause variation range bigger.The return flow line design and the adjustment of direct-current traction power supply all need be carried out as foundation with track resistance, and therefore, track resistance is a significant data of the design of DC traction return-flow system, maintenance.
Up to the present, the method for testing of track resistance also mainly is to adopt traditional on-the-spot manual testing's mode to accomplish, and generally adopts voltammetry.When the track resistance test is carried out at the scene; With track and other interval disconnection in an interval, an end ground connection, another termination direct supply; Calculate the unitary resistance value of this interval orbit through reometer, supply voltage and the burst length of serial connection; Relatively confirm whether track resistance meets the requirements, and wherein, standard code track seam resistance value must not be greater than one meter same size track resistance resistance in the back with the standard trajectory characteristic resistance.But it is bigger that this method of testing is influenced by stake resistance, and test error is big, and only can judge whether the track resistance in an interval is qualified, can not be specific to definite place when defective; In addition, this method is that the construction period track uses when checking and accepting, and for the system of actual motion, is difficult to the track in an interval is isolated fully from system, is difficult to carry out the track resistance test.
Summary of the invention
Technical matters: the purpose of the utility model is the weak point that overcomes prior art, and a kind of simple in structure, accurate, easy to operate, effective DC traction backflow track resistance proving installation of test is provided.
Technical scheme: the DC traction backflow track resistance proving installation of the utility model; Comprise the locomotive that is located on the track with track seam; Locomotive is provided with insulation cover plate; Insulation cover plate is provided with the testing power supply with a shunt circuit; Testing power supply is communicated with the front vehicle wheel and the rear wheel lead of locomotive, is in series with first resistance and second resistance between the both positive and negative polarity of testing power supply, and the tie point place of first resistance and second resistance is provided with the potential test appearance that is communicated with middle wheel lead; Testing power supply provides electric current through front vehicle wheel, track, middle wheel, track seam, rear wheel circulation, judges the resistance of track seam through the current potential of testing first resistance and the second resistance tie point and middle wheel.
Described potential test appearance adopts the data collection and analysis appearance with data storage function; The spacing of described front vehicle wheel and middle wheel, middle wheel and rear wheel is 1 meter; The resistance ratio of described first resistance and second resistance is 1:2.
Beneficial effect: owing to adopted technique scheme, the utility model can not only can also carry out routine test at run duration, so that in time find and handle the track resistance abnormal problem that possibly occur in the test that carries out an acceptance inspection of track engineering construction period.It is simple in structure, and method is easy, measurement data is accurate, and is easy to operate, effective.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1-testing power supply, 2-insulation cover plate, 3-front vehicle wheel, wheel in the middle of the 4-track, 5-, 6-track seam, 7-rear wheel, 8-first resistance, 9-second resistance, 10-potential test appearance.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further description:
The DC traction backflow track resistance proving installation of the utility model; Comprise the locomotive that is located on the track 4 with track seam 6; Locomotive is provided with insulation cover plate 2, and insulation cover plate 2 is provided with the testing power supply 1 with a shunt circuit, and testing power supply 1 is an accumulator; Testing power supply 1 is communicated with rear wheel 7 leads with the front vehicle wheel 3 of locomotive, is in series with first resistance 8 and second resistance 9 between the both positive and negative polarity of testing power supply 1, and the resistance ratio of described first resistance 8 and second resistance 9 is precision resistance or the slide rheostat of 1:2.The tie point place of first resistance 8 and second resistance 9 is provided with the potential test appearance 10 that is communicated with middle wheel 5 leads, and described potential test appearance 10 adopts the data collection and analysis appearance with data storage function.Testing power supply 1 provides electric current through front vehicle wheel 3, track 4, middle wheel 5, track seam 6, rear wheel 7 circulations, judges the resistance of track seam through the current potential of testing first resistance 8 and second resistance, 9 tie points and middle wheel 5.Described front vehicle wheel 3 and middle wheel 5, middle wheel 5 are 1 meter with the spacing of rear wheel 7.Testing power supply 1 positive pole constitutes one tunnel loop through front vehicle wheel 3, track 4, middle wheel 5, track seam 6, rear wheel 7 with testing power supply 1 negative pole; Testing power supply 1 is anodal to constitute another loop, road through first resistance 8, second resistance 9 with testing power supply 1 negative pole; Test contact 1 links to each other with shunt resistance 6 one ends, and shunt resistance 6 other ends link to each other with recognition electrode 7.The tie point of potential test appearance 10 1 terminations, first resistance 8 and second resistance 9, the terminals of wheel 5 in the middle of another termination.
Claims (4)
1. DC traction backflow track resistance proving installation; It is characterized in that: it comprises the locomotive that is located on the track (4) with track seam (6); Locomotive is provided with insulation cover plate (2); Insulation cover plate (2) is provided with the testing power supply (1) with a shunt circuit; Testing power supply (1) is communicated with the front vehicle wheel (3) and rear wheel (7) lead of locomotive; Be in series with first resistance (8) and second resistance (9) between the both positive and negative polarity of testing power supply (1); The tie point place of first resistance (8) and second resistance (9) is provided with the potential test appearance (10) that is communicated with middle wheel (5) lead, and testing power supply (1) provides electric current through front vehicle wheel (3), track (4), middle wheel (5), track seam (6), rear wheel (7) circulation, judges the resistance of track seam through the current potential of testing first resistance (8) and second resistance (9) tie point and middle wheel (5).
2. DC traction backflow track resistance proving installation according to claim 1 is characterized in that: described potential test appearance (10) adopts the data collection and analysis appearance with data storage function.
3. DC traction backflow track resistance proving installation according to claim 1 is characterized in that: described front vehicle wheel (3) is 1 meter with middle wheel (5), middle wheel (5) with the spacing of rear wheel (7).
4. DC traction backflow track resistance proving installation according to claim 1 is characterized in that: described first resistance (8) is 1:2 with the resistance ratio of second resistance (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200538472U CN202502156U (en) | 2012-02-20 | 2012-02-20 | Testing device for resistors of dc traction backflow track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200538472U CN202502156U (en) | 2012-02-20 | 2012-02-20 | Testing device for resistors of dc traction backflow track |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502156U true CN202502156U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200538472U Expired - Fee Related CN202502156U (en) | 2012-02-20 | 2012-02-20 | Testing device for resistors of dc traction backflow track |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502156U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539922A (en) * | 2012-02-20 | 2012-07-04 | 中国矿业大学 | Device and method for testing DC (Direct Current) traction reflux track resistance |
| CN105277794A (en) * | 2015-11-19 | 2016-01-27 | 广州供电局有限公司 | Method and system for measuring pressure bonding resistance of cable joint |
| CN109941154A (en) * | 2019-03-25 | 2019-06-28 | 中国矿业大学 | A kind of system and method limiting rail voltage |
-
2012
- 2012-02-20 CN CN2012200538472U patent/CN202502156U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539922A (en) * | 2012-02-20 | 2012-07-04 | 中国矿业大学 | Device and method for testing DC (Direct Current) traction reflux track resistance |
| CN105277794A (en) * | 2015-11-19 | 2016-01-27 | 广州供电局有限公司 | Method and system for measuring pressure bonding resistance of cable joint |
| CN105277794B (en) * | 2015-11-19 | 2018-06-08 | 广州供电局有限公司 | Cable connector crimps the measuring method and system of resistance |
| CN109941154A (en) * | 2019-03-25 | 2019-06-28 | 中国矿业大学 | A kind of system and method limiting rail voltage |
| CN109941154B (en) * | 2019-03-25 | 2021-11-19 | 合肥华威自动化有限公司 | System and method for limiting rail voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20170220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |