CN203275604U - Preventive safety detector of high-voltage frequency conversion speed adjusting device - Google Patents
Preventive safety detector of high-voltage frequency conversion speed adjusting device Download PDFInfo
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- CN203275604U CN203275604U CN 201320219716 CN201320219716U CN203275604U CN 203275604 U CN203275604 U CN 203275604U CN 201320219716 CN201320219716 CN 201320219716 CN 201320219716 U CN201320219716 U CN 201320219716U CN 203275604 U CN203275604 U CN 203275604U
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Abstract
Provided is a preventive safety detector of a high-voltage frequency conversion speed adjusting device. The preventive safety detector is connected to a detection power unit of the high-voltage frequency conversion speed adjusting device, and comprises a three-phase adjustable alternating current source, a power source transmitter, a clock pulse generator, a zero corrector, a synchronized trigger pulse generator and a synchronized detection signal transmitter. The three-phase adjustable alternating current source is connected to the detection power unit via a detection power source output connection point, the power source transmitter is connected with the three-phase adjustable alternating current source, the input end of the synchronized trigger pulse generator is connected with the clock pulse generator, the zero corrector and the power source transmitter, and the output end of the synchronized trigger pulse generator is connected with a synchronized trigger pulse output connection point. The preventive safety detector can maintain and check the high-voltage frequency conversion speed adjusting device on a regular basis, also can preventively detect the characteristics of all components, and plays a key role in smooth running of a frequency conversion system and in reducing the fault incidence rate of the system. Moreover, the fault incidence rate is reduced, the service life of the device is prolonged, and investment and cost in daily uses are substantially lowered.
Description
Technical field
The utility model relates to a kind of preventative safety detector of high-voltage frequency conversion and speed-adjusting device.
Background technology
Construction and development along with the combined sewer collection system, the large automatic pumping plant is more and more, part pumping plant pump machine has adopted high voltage frequency converter to carry out the adjusting of water pump water outlet flow, the speed adjusting performance that it is good and proportioning pump machine change the good energy saving effect in operating mode, for crucial effect has been played in the feed flow regulation and control of large pumping station.
as shown in Figure 1, the detection power unit of high-voltage frequency conversion and speed-adjusting device comprises rectifier bridge, filter capacitor, direct current IGBT copped wave module, mimic pulse generator, load and signal show regulation device, be basic AC-DC-AC single-phase inversion circuit, the rectification side is the transistor three-phase commutation bridge, rectifier bridge will detect power supply (or working power) to carry out rectification and makes AC power become Voltage pulsating direct-current supply, by filter capacitor, Voltage pulsating direct-current supply is carried out filtering, Voltage pulsating direct-current supply is filtered into more regular direct current offers switching device IGBT work, the IGBT inverter bridge is carried out sine pulse width modulation (PWM) and is controlled, can obtain single-phase AC and export to signal demonstration regulation device, show that by signal regulation device carries out the demonstration of data or adjusts, control, power cell is worked in order.In full accord on each power model structure and electric property, can exchange.
The front-end investment of high-voltage frequency conversion and speed-adjusting device is large, and serviceable life is limited, and directly affects its operating rate of breakdown.High voltage frequency conversion system has adopted a large amount of electronic components, and the serviceable life of most of electronic components is limited, as in time not changing these aging components and parts, will greatly increase operation and drop into.
For defects, use several different methods to be remedied, but effect is still undesirable.Because the sewage pumping station scene exists a large amount of corrosive gass, conduction dust, directly affected its operation conditions, cause Frequent Troubles, the aircraft bombing event even occurs, particularly components and parts blast, the device damage area is large, repairs difficulty and the relative input funds also larger many factors that waits.
The utility model content
The preventative safety detector of a kind of high-voltage frequency conversion and speed-adjusting device that the utility model provides ensures the good use of high voltage frequency conversion equipment, reduces rate of breakdown.
in order to achieve the above object, the utility model provides a kind of preventative safety detector of high-voltage frequency conversion and speed-adjusting device, it is connected to the detection power unit of high-voltage frequency conversion and speed-adjusting device, this detecting device comprises the three-phase adjustable ac source, the power supply transmitter, clock signal generator, zero adjuster, synchronized trigger generator and synchronous detection signal transmitter, the three-phase adjustable ac source is by detection power supply output connection access detection power unit, the power supply transmitter connects the three-phase adjustable ac source, the input end of synchronized trigger generator connects clock signal generator, zero adjuster and power supply transmitter, the output terminal of synchronized trigger generator connects synchronous trigger pulse output connection.
This detecting device also comprises three-phase adjustable ac source protector, three-phase adjustable ac source protector series connection three-phase adjustable ac source.
This detecting device also comprises standard signal display and detection signal display, and the input end of standard signal display connects power supply transmitter and standard signal sampling tie point, and the input end of detection signal display connects the synchronous detection signal transmitter.
The three-phase adjustable ac source comprises Va, Vb and Vc three-phase current, the first transmitter Vab in the power supply transmitter connects Va and the Vb electric current in the three-phase adjustable ac source, the second transmitter Vbc connects Vb and the Vc electric current in the three-phase adjustable ac source, and the 3rd transmitter Vca connects Vc and the Va electric current in the three-phase adjustable ac source.
The utility model regularly carries out maintaining and each components and parts characteristics is carried out preventive test high-voltage frequency conversion and speed-adjusting device, to the good operation of frequency conversion system with reduce its rate of breakdown and play a key effect, can reduce rate of breakdown, extension device serviceable life, also can greatly reduce the input of routine use cost.
Description of drawings
Fig. 1 is the circuit structure diagram of detection power unit.
Fig. 2 is circuit structure diagram of the present utility model.
Fig. 3 is use schematic diagram of the present utility model.
Embodiment
Following according to Fig. 2 and Fig. 3, illustrate preferred embodiment of the present utility model.
as shown in Figure 2, the utility model provides a kind of preventative safety detector of high-voltage frequency conversion and speed-adjusting device, it is connected to the detection power unit of high-voltage frequency conversion and speed-adjusting device, this detecting device comprises three-phase adjustable ac source 12, power supply transmitter 2, clock signal generator 1, zero adjuster 7, synchronized trigger generator 5 and synchronous detection signal transmitter 10, three-phase adjustable ac source 12 is by detecting power supply output connection 8 access detection power unit, power supply transmitter 2 connects three-phase adjustable ac source 12, the input end of synchronized trigger generator 5 connects clock signal generator 1, zero adjuster 7 and power supply transmitter 2, the output terminal of synchronized trigger generator 5 connects synchronous trigger pulse output connection 6.
Three-phase adjustable ac source 12 comprises Va, Vb and Vc three-phase current, the first transmitter Vab in power supply transmitter 2 connects Va and the Vb electric current in three-phase adjustable ac source 12, the second transmitter Vbc connects Vb and the Vc electric current in three-phase adjustable ac source 12, and the 3rd transmitter Vca connects Vc and the Va electric current in three-phase adjustable ac source 12.
This detecting device also comprises three-phase adjustable ac source protector 13; standard signal display 3 and detection signal display 11; three-phase adjustable ac source protector 13 series connection three-phase adjustable ac sources 12; the input end of standard signal display 3 connects power supply transmitter 2 and standard signal sampling tie point 4, and the input end of detection signal display 11 connects synchronous detection signal transmitter 10.
In the present embodiment; the model of clock signal generator 1 is ICS953401; the model of power supply transmitter 2 is ADE03-15; the model of standard signal display 3 is YB4330; the model of synchronized trigger generator 5 is LTC6993; the model of detection signal transmitter 10 is SMI10DCE-P4-02/S30; the model of detection signal display 11 is YB4330; three-phase adjustable ac source 12 is 0 ~ 800V/1kVA customization; three-phase adjustable ac source protector 13 adopts electric capacity R1, R2 and R3, and model is RC-15.
as shown in Figure 3, the utility model carries out preventive test to each components and parts of the detection power unit of high-voltage frequency conversion and speed-adjusting device, three-phase adjustable ac source 12 uses 3 cross streams pressure regulators as variable power supply, be connected to the detection power unit by detecting power supply output connection 8, input voltage as the detection power unit, three transmitters of power supply transmitter 2 provide synchro source for clock-pulse generator 5, after clock-pulse generator 5 is compared in conjunction with the time clock of clock signal generator 1 and zero adjuster 7, produce synchronous trigger pulse, be connected to the rectifier bridge of detection power unit by synchronous trigger pulse output connection 6, standard signal sampling tie point 4 provides the detection front signal by the detection power unit, show by standard signal display 3 in conjunction with three-phase adjustable ac source 12, the sampled signal point of detection signal incoming junction 9 after by the energising of detection power unit provides, by detection signal transmitter 10 by detection signal display 11 records, show the variation of detected power cell output waveform.
The utility model uses the three-phase adjustable ac source to input as power cell, and the hand-held oscillograph is exported as the unit.Detect with emulation and carry out simultaneously, by power supply transmitter combination clock signal, sending the trigger pulse of synchronizeing with power supply joins on the commutation controller spare of unit, make the unit enter the analog operation state, regulate input voltage by the pressure regulator in the three-phase adjustable ac source, change its output waveform, under the effect that detects power supply, each parts of unit have working signal output.By signals collecting, output signal and the standard signal of each parts of unit compared, if any parameter and requirement is not inconsistent or signal has extremely, just can check out which parts has problem, in time solves.
After power cell access 3 cross streams voltages, it is carried out the direct current rectifying and wave-filtering, for the Static Detection of power cell by the following method: 1, certain power component damage method of judgement rectifying part is to utilize the unilateral conduction of rectifier cell, should be different when positive and negative resistance is normal under static state.2, detect for filter capacitor, when the electrochemical capacitor square wave that output waveform will occur exporting during due to temperature or aging normally filtering is uneven, further produce the IGBT device after the peak voltage permanent damages.3, for IGBT inverter circuit Static Detection fly-wheel diode in parallel in each inversion IGBT module, detect input, the positive and negative test value of the relative dc bus positive and negative electrode of output terminal.
After treating that the static test result is normal, recycling the utility model is to the power cell detection of dynamic test that powers on.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute will be all apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (4)
1. the preventative safety detector of a high-voltage frequency conversion and speed-adjusting device, it is connected to the detection power unit of high-voltage frequency conversion and speed-adjusting device, it is characterized in that, this detecting device comprises three-phase adjustable ac source (12), power supply transmitter (2), clock signal generator (1), zero adjuster (7), synchronized trigger generator (5) and synchronous detection signal transmitter (10), three-phase adjustable ac source (12) is by detection power supply output connection (8) access detection power unit, power supply transmitter (2) connects three-phase adjustable ac source (12), the input end of synchronized trigger generator (5) connects clock signal generator (1), zero adjuster (7) and power supply transmitter (2), the output terminal of synchronized trigger generator (5) connects synchronous trigger pulse output connection (6).
2. the preventative safety detector of high-voltage frequency conversion and speed-adjusting device as claimed in claim 1; it is characterized in that; this detecting device also comprises three-phase adjustable ac source protector (13), three-phase adjustable ac source protector (13) series connection three-phase adjustable ac source (12).
3. the preventative safety detector of high-voltage frequency conversion and speed-adjusting device as claimed in claim 2, it is characterized in that, this detecting device also comprises standard signal display (3) and detection signal display (11), the input end of standard signal display (3) connects power supply transmitter (2) and standard signal sampling tie point (4), and the input end of detection signal display (11) connects synchronous detection signal transmitter (10).
4. the preventative safety detector of high-voltage frequency conversion and speed-adjusting device as claimed in claim 1, it is characterized in that, three-phase adjustable ac source (12) comprises Va, Vb and Vc three-phase current, the first transmitter Vab in power supply transmitter (2) connects Va and the Vb electric current in three-phase adjustable ac source (12), the second transmitter Vbc connects Vb and the Vc electric current in three-phase adjustable ac source (12), and the 3rd transmitter Vca connects Vc and the Va electric current in three-phase adjustable ac source (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320219716 CN203275604U (en) | 2013-04-26 | 2013-04-26 | Preventive safety detector of high-voltage frequency conversion speed adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320219716 CN203275604U (en) | 2013-04-26 | 2013-04-26 | Preventive safety detector of high-voltage frequency conversion speed adjusting device |
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| Publication Number | Publication Date |
|---|---|
| CN203275604U true CN203275604U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320219716 Expired - Fee Related CN203275604U (en) | 2013-04-26 | 2013-04-26 | Preventive safety detector of high-voltage frequency conversion speed adjusting device |
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| CN (1) | CN203275604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242892A (en) * | 2016-12-23 | 2018-07-03 | 施耐德电气工业公司 | For controlling the method and apparatus of driving circuit |
-
2013
- 2013-04-26 CN CN 201320219716 patent/CN203275604U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242892A (en) * | 2016-12-23 | 2018-07-03 | 施耐德电气工业公司 | For controlling the method and apparatus of driving circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140426 |