CN205038275U - Brake unit testing device - Google Patents
Brake unit testing device Download PDFInfo
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- CN205038275U CN205038275U CN201520726726.3U CN201520726726U CN205038275U CN 205038275 U CN205038275 U CN 205038275U CN 201520726726 U CN201520726726 U CN 201520726726U CN 205038275 U CN205038275 U CN 205038275U
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- brake unit
- contactor
- afe rectifier
- industrial computer
- direct current
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Abstract
The utility model relates to a brake unit testing device, including circuit breaker Q1, the isolation transformer T1 that take a percentage more, voltage level selecting contactor, the AFE rectifier, detect the control unit, survey brake unit, direct current contactor, load resistance constitutes, the isolation transformer T1's that take a percentage former limit is passed through circuit breaker Q1 and is connected the electric wire netting more, take a percentage and be connected to the interchange inlet wire end of AFE rectifier through voltage level selecting contactor in the isolation transformer T1's that take a percentage vice limit more, the direct current leading -out terminal and the quilt of AFE rectifier are surveyed brake unit and are connected, the output of being surveyed brake unit links to each other with load resistance through direct current contactor, detect the control unit respectively with the AFE rectifier, it is connected to be surveyed brake unit. The utility model discloses automatic adjustment direct current busbar voltage does comprehensive experiment, testing arrangement degree of automation height, safe and reliable, convenient to use, ability wide application in brake unit's detection, dispatch from the factory debugging and maintenance occasion to brake unit on request.
Description
Technical field
The utility model belongs to detection experiment field, is specifically related to a kind of brake unit detection experiment device.
Background technology
The verification test platform of existing brake unit is adopt variac to add step-up transformer mostly, adds the combination of rectifier bridge and filtering circuit.Need artificial manual adjustments autotransformer to change DC voltage when detecting brake unit; lack the link of protection (superpotential, electric shock etc.) to personnel and equipment necessity; can not completely simulating brake unit fast, the actual condition of periodic discharge, comprehensive not to the detection of brake unit.
Utility model content
In order to solve the problems referred to above that prior art exists, the utility model provides a kind of brake unit detection experiment device.
The technical scheme that the utility model adopts is: a kind of brake unit detection experiment device, comprise tested brake unit, also comprise circuit breaker Q 1, many tap insulating transformers T1, electric pressure selects contactor, AFE rectifier, detection control unit, D.C. contactor, pull-up resistor, the former limit of described many tap insulating transformers T1 connects electrical network by circuit breaker Q 1, the secondary tap of described many tap insulating transformers T1 selects contactor to be connected to the interchange end of incoming cables of AFE rectifier by electric pressure, the direct current leading-out terminal of described AFE rectifier is connected with tested brake unit, the output of described tested brake unit is connected with pull-up resistor through D.C. contactor, described detection control unit respectively with AFE rectifier, tested brake unit is connected.
Further, described detection control unit comprises PLC, industrial computer, oscillograph, printer, described PLC is connected with AFE rectifier, industrial computer respectively by communication, described industrial computer is connected with printer, described oscillograph is connected with tested brake unit the work wave detecting tested brake unit, and is connected with industrial computer by communication.
Further, described pull-up resistor is made up of multiple resistance.
Further, the secondary output voltage of described many tap insulating transformers T1 is followed successively by 3AC270V, 330V, 400V, 480V, 600V and 690V.
The beneficial effects of the utility model are: by use of the present utility model, automatically can adjust DC bus-bar voltage on request, do comprehensive test to brake unit.Proving installation automaticity is high, safe and reliable, easy to use, can be widely used in the detection of brake unit, dispatch from the factory and debug and maintenance occasion.
Accompanying drawing explanation
Fig. 1 is a kind of structured flowchart of brake unit detection experiment device;
Fig. 2 is that industrial computer function arranges figure to mould-fixed;
Fig. 3 is tested brake unit working method figure.
In figure: Q1, isolating switch; T1, many tap insulating transformers; KM1 ~ KM6, electric pressure select contactor; 4, AFE rectifier; 5, detection control unit; 6, tested brake unit; 7, D.C. contactor; 8, pull-up resistor; 51, PLC; 52, industrial computer; 53, oscillograph; 54, printer.
Embodiment
As shown in Figure 1, the utility model provides a kind of brake unit detection experiment device, comprise tested brake unit 6, also comprise circuit breaker Q 1, many tap insulating transformers T1, electric pressure selects contactor KM1 ~ KM6, AFE rectifier 4, detection control unit 5, D.C. contactor 7, pull-up resistor 8, the former limit of many tap insulating transformers T1 connects electrical network by circuit breaker Q 1, the secondary tap of many tap insulating transformers T1 selects contactor KM1 ~ KM6 to be connected to the interchange end of incoming cables of AFE rectifier 4 by electric pressure, the direct current leading-out terminal of AFE rectifier 4 is connected with tested brake unit 6, the output of tested brake unit 6 is connected with pull-up resistor 8 through D.C. contactor 7, detection control unit 5 respectively with AFE rectifier 4, tested brake unit 6 is connected, detection control unit 5 comprises PLC51, industrial computer 52, oscillograph 53, printer 54, PLC51 is connected with AFE rectifier 4, industrial computer 52 respectively by communication, industrial computer 52 is connected with printer 54, oscillograph 53 is connected with tested brake unit 6 work wave detecting tested brake unit 6, and is connected with industrial computer 52 by communication, industrial computer 52 can select contactor KM1 ~ KM6, AFE rectifier 4, D.C. contactor 7 to control respectively to electric pressure.
Pull-up resistor 8 is made up of multiple resistance, and resistance connects by different series, parallel modes the resistance that may be combined with into different resistance, facilitates the brake unit of different capacity grade to test.
The secondary output voltage of many tap insulating transformers T1 is 3AC270V, 330V, 400V, 480V, 600V and 690V, and AFE rectifier DC voltage output range is wide, can be regulated arbitrarily by DC405V ~ DC1200V.
The course of work of the present utility model is: according to the discharge threshold of tested brake unit 6, determine the primary voltage of AFE rectifier, controls corresponding voltage hierarchical selection contactor KM1 ~ KM6 adhesive.
The corresponding relation of AFE rectifier 4 inlet wire and VD is as follows:
Exportable 405V ~ 513V direct voltage source when selecting 270V input voltage
Exportable 495V ~ 627V direct voltage source when selecting 330V input voltage
Exportable 600V ~ 760V direct voltage source when selecting 400V input voltage
Exportable 720V ~ 910V direct voltage source when selecting 480V input voltage
Exportable 900V ~ 1140V direct voltage source when selecting 600V input voltage
Exportable 1035V ~ 1200V direct voltage source when selecting 690V input voltage
Industrial computer 52 is selected DC voltage control mode: function is given/and fixed value is given.
As shown in Figure 2, when function is to mould-fixed, the most high threshold 9 of DC bus-bar voltage is set, DC bus-bar voltage lowest threshold 10, periodic duty periodic quantity 11, rise-time value 12, duration of peak value's value 13, fall-time value 14;
When fixed value is to mould-fixed, directly input needs given DC voltage value;
Start AFE rectifier 4 to run, when when function is to mould-fixed, DC voltage can be periodic transformation according to the setting value of function, and when when fixed value is to mould-fixed, DC bus-bar voltage is a fixing value, and needs to make an amendment adjustment at any time according to reality test.
Below with reference to the accompanying drawings 3, take discharge threshold as DC1065V, power 200kW, the brake unit of discharge resistance 4 Ω is example,
The working method of tested brake unit:
Peak power P1=1.5 × P2, corresponding direct-current working volts: V1
Rated power P2, corresponding direct-current working volts: V2
Power P DB=0.25 time long × P2, corresponding direct-current working volts: Vdb
Adjustment pull-up resistor 8 series-parallel system, make its resistance be 4 Ω, power is 200kW; By tested brake unit 6 connecting system, selection electric pressure is 600V(DC900V ~ 1140V), close isolating switch Q1, pick-up voltage hierarchical selection contactor KM5, pull-up resistor 8 connected by adhesive D.C. contactor 7, industrial computer 52 chosen fixed voltage to mould-fixed, input direct voltage set-point Vdb, start AFE rectifier 4, power-performance test when carrying out long to tested brake unit 6; Stop AFE rectifier 4, on industrial computer 52, choice function is to mould-fixed, and arranges relevant parameter;
Rated power experiment parameter is arranged: Ustep1=V2; Ustep2=900; △ t1=70; △ t2=1; △ t3=20; △ t4=1;
Peak power experiment parameter is arranged: Ustep1=V1; Ustep2=900; △ t1=87; △ t2=1; △ t3=3; △ t4=1;
After setting parameter, start AFE rectifier 4, DC bus-bar voltage does periodic change with setting value, can carry out periodic peaks power examination experiment to the serviceability of brake unit 6.
The related data of PLC51 acquisition testing test unit simultaneously, is recorded by industrial computer 52 and stores, and industrial computer 52 also gathers and the measured waveform of storage oscilloscope 53 simultaneously, has tested rear formation test report, and has printed by printer 54.
Correlation parameter is set in industrial computer 52, utilizes PLC51 control AFE rectifier 4 DC voltage, be the value of DC voltage according to setting, and do periodic adjustment cycling time.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection domain of the present utility model.
Claims (4)
1. a brake unit detection experiment device, comprise tested brake unit, it is characterized in that: also comprise isolating switch (Q1), many tap insulating transformers (T1), electric pressure selects contactor (KM1 ~ KM6), AFE rectifier (4), detection control unit (5), D.C. contactor (7), pull-up resistor (8), the former limit of described many tap insulating transformers (T1) connects electrical network by isolating switch (Q1), the secondary tap of described many tap insulating transformers (T1) selects contactor (KM1 ~ KM6) to be connected to the interchange end of incoming cables of AFE rectifier (4) by electric pressure, the direct current leading-out terminal of described AFE rectifier (4) is connected with tested brake unit (6), the output of described tested brake unit (6) is connected with pull-up resistor (8) through D.C. contactor (7), described detection control unit (5) respectively with AFE rectifier (4), tested brake unit (6) is connected.
2. a kind of brake unit detection experiment device according to claim 1, it is characterized in that: described detection control unit (5) comprises PLC(51), industrial computer (52), oscillograph (53), printer (54), described PLC(51) be connected with AFE rectifier (4), industrial computer (52) respectively by communication, described industrial computer (52) is connected with printer (54), described oscillograph (53) is connected with tested brake unit (6) work wave detecting tested brake unit (6), and is connected with industrial computer (52) by communication.
3. a kind of brake unit detection experiment device according to claim 1 and 2, is characterized in that: described pull-up resistor (8) is made up of multiple resistance.
4. a kind of brake unit detection experiment device according to claim 1 and 2, is characterized in that: the secondary output voltage of described many tap insulating transformers (T1) is followed successively by 3AC270V, 330V, 400V, 480V, 600V and 690V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520726726.3U CN205038275U (en) | 2015-09-18 | 2015-09-18 | Brake unit testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520726726.3U CN205038275U (en) | 2015-09-18 | 2015-09-18 | Brake unit testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205038275U true CN205038275U (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520726726.3U Active CN205038275U (en) | 2015-09-18 | 2015-09-18 | Brake unit testing device |
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| CN (1) | CN205038275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158613A (en) * | 2015-09-18 | 2015-12-16 | 天水电气传动研究所有限责任公司 | Brake unit detection test device |
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2015
- 2015-09-18 CN CN201520726726.3U patent/CN205038275U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158613A (en) * | 2015-09-18 | 2015-12-16 | 天水电气传动研究所有限责任公司 | Brake unit detection test device |
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