CN201611383U - On-line detection device for shaft voltage and shaft current of generator - Google Patents
On-line detection device for shaft voltage and shaft current of generator Download PDFInfo
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- CN201611383U CN201611383U CN2010201404669U CN201020140466U CN201611383U CN 201611383 U CN201611383 U CN 201611383U CN 2010201404669 U CN2010201404669 U CN 2010201404669U CN 201020140466 U CN201020140466 U CN 201020140466U CN 201611383 U CN201611383 U CN 201611383U
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Abstract
The utility model relates to an on-line detection device for shaft voltage and shaft current of a generator, which comprises that: a measurement carbon brush A1 is arranged at an excitation end of a bearing of the generator for measuring the shaft voltage of the generator, a current transformer A2 is arranged at the gas end for measuring the shaft current of the generator, the A1 and the A2 input the measured voltage and current signals to a signal conditioning unit A3, the signal conditioning unit A3 transmits electrical signals to a signal acquisition unit A4, the signal acquisition unit A4 is adjusted through a signal display and alarm unit A5 till a computer can identify the signals, the signals are transmitted into a central processor A6 of an industrial personal computer, and the signals are displayed from an industrial display screen A7. The utility model provides a complete solution for the shaft voltage and shaft current measurement device, and all the acquisition, processing and analysis of the shaft voltage and shaft current detection data are completed by the computer. The device can continuously detect the shaft voltage and the shaft current on line, and provide control, adjusting range and alarm.
Description
Technical field:
Background technology: the energy that modern Chinese national economy construction and social development are utilized is electric energy substantially.The ten big emphasis energy-saving and emission-reduction engineerings that China starts, primary emphasis is exactly the energy-saving and emission-reduction of coal fired power generation industry, the most effective solution improves the single-phase capacity of generator, China brings up to 1100MW with single-machine capacity at present, the electric coal consumption of the every degree of medium and small unit is dropped to about 320 grams from about 535 grams, improved benefit, saved the energy, ecologic environment is improved.
Raising along with the high-rating generator pool-size, also more and more higher to the dynamo bearing parameter request, if particularly dynamo bearing runs up to insulate and is damaged, this electromotive force will damage the generator bearing shell, and domestic many large-scale units this fault take place in succession cause great economic loss.Under this background technology, my company has researched and developed " high-rating generator shaft voltage shaft current on-line measuring device ", effectively solves this technical barrier, one of provides the foundation for high capacity unit safety, stable operation.
Summary of the invention: the purpose of this device provides a kind of actions menu complete, effective trouble-saving generation is set, the generator shaft voltage axis electric current on-line measuring device of being convenient to keep in repair.The technical solution of the utility model is: a kind of generator shaft voltage axis electric current on-line measuring device comprises: a cabinet A, encourage end and measure carbon brush A1, gas end current transformer A2, signal condition unit A3, signal gathering unit A4, signal shows and alarm unit A5, generator is encouraged end and is installed and measured carbon brush A1 on bearing, measure generator shaft voltage, the gas end is installed current transformer A2, measure the generator shaft electric current, A1, A2 is with the voltage of measuring, current signal is input to signal condition unit A3, signal condition unit A3 sends electric signal to signal gathering unit A4, signal gathering unit A4 shows by signal and alarm unit A5 adjusts, can send among the central processing unit A6 of industrial computer after the identification signal to computing machine by signal demonstration and alarm unit A5, show from industrial indicator screen A7.The utility model principle is that shaft voltage is measured with encouraging to hold at the vapour end of axle.The ground connection carbon brush must be guaranteed axle ground connection reliably at the vapour end.Continuous shaft-voltage measurement is by measuring carbon brush A1 and realize that transmitter allows the high resistant above earth potential to measure encouraging end.Fuse is installed in measures the loop.
Shaft current is measured by the vapour end current transformer A2 that is installed on the line between vapour end ground connection carbon brush and the steam turbine earth point.The earthing potential that voltage and current is measured must be consistent, and unified receiving on the steam turbine earth point.
Voltage, the current signal measured, receive among the central processing unit A6 of industrial computer.In the central processing unit A6 of industrial computer, set and produce the limit value that triggers alerting signal.
The advantage of this device: (1) actions menu is provided with complete.Be provided with " management " " measurement " " database " " setting " and menus such as " helps ".
(2) device application software is developed under ' WINDOWS ' environment, has good man-machine interface interface.
(3) if during the too high situation of generator shaft voltage, shaft current, pick-up unit can the current data file of printout.
Whether (4) user can access generator shaft voltage, shaft current history run data at any time, need repairing and provide according to effective trouble-saving generation thereby can be generator.
(5) the device cabinet is a modular structure, is convenient to maintenance.
The utility model is applied to all large and medium-sized turbodynamos, and complete shaft voltage and shaft current measurement mechanism solution is provided, shaft voltage and shaft current detect data collection, processing, analysis, all finish by computing machine.Can continuous on-line detection shaft voltage and shaft current, and control, setting range and warning are provided.
Description of drawings
Fig. 1 is the circuit theory diagrams of this device.
Fig. 2 is this device signal condition unit schematic diagram
Fig. 3 is the right view of Fig. 2
Embodiment
As shown in Figure 1, a kind of generator shaft voltage axis electric current on-line measuring device, generator shaft voltage axis electric current on-line measuring device comprises: cabinet A, encourage that end is measured carbon brush A1, gas end current transformer A2, signal condition unit A3, signal gathering unit A4, signal shows and alarm unit A5, the central processing unit A6 of industrial computer, industrial indicator screen A7.Generator is encouraged end and is installed and measured carbon brush A1 on bearing, measure generator shaft voltage, the gas end is installed current transformer A2, measure the generator shaft electric current, A1, A2 are input to signal condition unit A3 with voltage, the current signal of measuring, signal condition unit A3 sends electric signal to signal gathering unit A4, signal gathering unit A4 shows by signal and alarm unit A5 adjusts, being incorporated into computing machine by signal demonstration and alarm unit A5 can send among the central processing unit A6 of industrial computer after the identification signal, shows from industrial indicator screen A7.
During work, when generator when running up, encourage end measurement carbon brush A1 and over the ground the gentle end current transformer of continuous shaft voltage A2 is passed through macro-axis over the ground continuous shaft current by macro-axis, behind signal condition unit A3, change into discernible signal, send into signal gathering unit A4, enter into the central processing unit A6 of industrial computer by signal gathering unit A4, industrial computer finally shows data according to type of alarm and warning limit value that the user configures by industrial indicator screen A7 then.Can detect the data cases of generator shaft voltage axis electric current in real time.
Signal condition unit scheme circuit is shown in Fig. 2, Fig. 3 institute.
It is that physical dimension that raw material is made is 25 * 32 * 65 carbon brush that A1 is to use carbon, by the continuous shaft voltage that A1 produces, sends among the signal condition unit A3.
A2 adopts 0.5mm
2Higher temperature line coil on the magnet ring is the current transformer of 50 circles.By the continuous shaft current that A2 produces, send among the signal gathering unit A3.
A3 is the signal condition unit that the isolating amplifier circuit module is formed.By the shaft voltage shaft current after the conversion of A3 isolating amplifier circuit, send among the signal gathering unit A4.
The signal gathering unit that the modular converter of A4 high-frequency high-speed modulus is formed.Send into signal demonstration and alarm unit A5 by the data that A4 gathers.
A5 is by connecting terminal block, and the signal that miniature circuit breaker, relay, Switching Power Supply and alarm lamp etc. are formed shows and alarm unit.By A5 alerting signal is sent among the central processing unit A6 of industrial computer.
A6 is industrial high-frequency high-speed computing machine.Handle by the signal process that A5 sends here, come out by industrial display A7 screen display.
A is by encouraging " the generator shaft voltage axis electric current on-line measuring device " of holding measurement carbon brush A1, gas end current transformer A2, signal condition unit A3, signal gathering unit A4, signal demonstration and alarm unit A5, the central processing unit A6 of industrial computer, industrial indicator screen A7 to form.
Claims (1)
1. generator shaft voltage axis electric current on-line measuring device, it is characterized in that: generator shaft voltage axis electric current on-line measuring device comprises: a cabinet A, encourage end and measure carbon brush A1, gas end current transformer A2, signal condition unit A3, signal gathering unit A4, signal shows and alarm unit A5, it is characterized in that: generator is encouraged end and is installed and measured carbon brush A1 on bearing, measure generator shaft voltage, the gas end is installed current transformer A2, measure the generator shaft electric current, A1, A2 is with the voltage of measuring, current signal is input to signal condition unit A3, signal condition unit A3 sends electric signal to signal gathering unit A4, signal gathering unit A4 shows by signal and alarm unit A5 adjusts, can send among the central processing unit A6 of industrial computer after the identification signal to computing machine by signal demonstration and alarm unit A5, show from industrial indicator screen A7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201404669U CN201611383U (en) | 2010-03-25 | 2010-03-25 | On-line detection device for shaft voltage and shaft current of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201404669U CN201611383U (en) | 2010-03-25 | 2010-03-25 | On-line detection device for shaft voltage and shaft current of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201611383U true CN201611383U (en) | 2010-10-20 |
Family
ID=42962017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201404669U Expired - Lifetime CN201611383U (en) | 2010-03-25 | 2010-03-25 | On-line detection device for shaft voltage and shaft current of generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201611383U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937700A (en) * | 2012-11-09 | 2013-02-20 | 昆山北极光电子科技有限公司 | Condition detection process for steam turbine generator unit |
| CN104391203A (en) * | 2014-12-01 | 2015-03-04 | 工业和信息化部电子第五研究所 | Electric device test monitoring device and electric device test monitoring method |
| CN105548655A (en) * | 2015-12-07 | 2016-05-04 | 辽宁东科电力有限公司 | Device for monitoring and controlling shaft voltage and shaft current of turbo-generator online |
| CN106772049A (en) * | 2017-02-28 | 2017-05-31 | 中广核研究院有限公司 | Generator's motor shaft insulating monitoring and positioner and method |
| CN108490238A (en) * | 2018-03-09 | 2018-09-04 | 中广核核电运营有限公司 | Steam turbine generator shaft current alert data processing unit and method |
| CN109324217A (en) * | 2017-08-01 | 2019-02-12 | 中广核研究院有限公司 | A kind of steam turbine generator shaft current and shaft voltage on-Line Monitor Device |
| CN110703090A (en) * | 2019-08-30 | 2020-01-17 | 江苏核电有限公司 | Generator shaft current detection device |
| CN110988481A (en) * | 2019-11-26 | 2020-04-10 | 中广核核电运营有限公司 | Device and method for measuring insulation to ground of excitation end sealing tile of generator |
| CN111007317A (en) * | 2019-11-26 | 2020-04-14 | 中广核核电运营有限公司 | Device and method for measuring insulation to ground of excitation end sealing tile of generator |
-
2010
- 2010-03-25 CN CN2010201404669U patent/CN201611383U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937700A (en) * | 2012-11-09 | 2013-02-20 | 昆山北极光电子科技有限公司 | Condition detection process for steam turbine generator unit |
| CN104391203A (en) * | 2014-12-01 | 2015-03-04 | 工业和信息化部电子第五研究所 | Electric device test monitoring device and electric device test monitoring method |
| CN105548655A (en) * | 2015-12-07 | 2016-05-04 | 辽宁东科电力有限公司 | Device for monitoring and controlling shaft voltage and shaft current of turbo-generator online |
| CN106772049A (en) * | 2017-02-28 | 2017-05-31 | 中广核研究院有限公司 | Generator's motor shaft insulating monitoring and positioner and method |
| CN109324217A (en) * | 2017-08-01 | 2019-02-12 | 中广核研究院有限公司 | A kind of steam turbine generator shaft current and shaft voltage on-Line Monitor Device |
| CN108490238A (en) * | 2018-03-09 | 2018-09-04 | 中广核核电运营有限公司 | Steam turbine generator shaft current alert data processing unit and method |
| CN108490238B (en) * | 2018-03-09 | 2020-09-22 | 中广核核电运营有限公司 | Turbo generator shaft current alarm data processing device and method |
| CN110703090A (en) * | 2019-08-30 | 2020-01-17 | 江苏核电有限公司 | Generator shaft current detection device |
| CN110703090B (en) * | 2019-08-30 | 2022-04-19 | 江苏核电有限公司 | Generator shaft current detection device |
| CN110988481A (en) * | 2019-11-26 | 2020-04-10 | 中广核核电运营有限公司 | Device and method for measuring insulation to ground of excitation end sealing tile of generator |
| CN111007317A (en) * | 2019-11-26 | 2020-04-14 | 中广核核电运营有限公司 | Device and method for measuring insulation to ground of excitation end sealing tile of generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101020 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: HARBIN ASIAPOWER Co.,Ltd. Document name: Notification of Expiration of Patent Right Duration |