CN201637830U - Online motor insulation monitor - Google Patents
Online motor insulation monitor Download PDFInfo
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- CN201637830U CN201637830U CN2010201675961U CN201020167596U CN201637830U CN 201637830 U CN201637830 U CN 201637830U CN 2010201675961 U CN2010201675961 U CN 2010201675961U CN 201020167596 U CN201020167596 U CN 201020167596U CN 201637830 U CN201637830 U CN 201637830U
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Abstract
An online motor insulation monitor comprises a zero-flux core-through sensor unit, a voltage signal conversion unit, a power supply unit, an analog signal processing unit, a data processing unit and a display unit, wherein the zero-flux core-through sensor unit is connected with the analog signal processing unit, a voltage signal measuring unit is connected with the analog signal processing unit, the analog signal processing unit is connected with the data processing unit, the data processing unit is connected with the display unit, the power supply unit is connected with the analog signal processing unit, the data processing unit and the display unit respectively, and the power supply unit is a linear power supply. The online motor insulation monitor can accurately and continuously monitor insulation conditions of motors during operation and provide reliable data reference for judging insulation conditions of the motors when the motors are in working conditions.
Description
(1) technical field
The utility model relates to the motor technology field, is specifically related to a kind of motor insulated on-line monitoring instrument.
(2) background technology
First: at present, the preventive trial on equipment power failure basis is all adopted in the motor maintenance, before the maintenance to equipment whether defectiveness, hidden danger and other health status be short in understanding, the service work tool bears the character of much blindness and limitation.Increase frequency of power cut simultaneously, influenced the reliability of equipment operation; Second: traditional insulation detecting method, (1.5 times of rated voltages of inspection standard, overhaul more emat coil then are that 2 times of rated voltages+1000V), the DC break down voltage Leakage Current is tested to use corresponding megohmmeter and power frequency withstand test usually.Withstand voltage test all is that winding is increased big voltage in rated voltage, and whether the test winding can tolerate, thereby judges the state of insulation of winding, owing to use big voltage, it then is irreversible impacting if cause damage to winding insulation.When equipment is not deposited Insulation Problems, may cause damage to original good motor, cause the consumption of the costliness of human, financial, and material resources power, so the repair based on condition of component that current domestic insulation of Electric Motor detection mode is in foreseeability progressively replaces original preventative power failure prophylactic repair stage, therefore the motor insulated on-line monitoring is very important, and also is the inexorable trend of future development.
(3) summary of the invention
The purpose of this utility model is to provide a kind of motor insulated on-line monitoring equipment that is applied to.
The purpose of this utility model is achieved in that it comprises zero magnetic flux punching sensor unit, the voltage signal converting unit, power supply unit, analogy signal processing unit, data processing unit and display unit, zero magnetic flux punching sensor unit connects analogy signal processing unit, the voltage signal converting unit connects analogy signal processing unit, analogy signal processing unit connects data processing unit, data processing unit connects display unit, power supply unit connects zero magnetic flux punching sensor unit respectively, analogy signal processing unit, data processing unit and display unit, power supply unit are linear power supply.Described analogy signal processing unit comprises the 1st amplifying circuit, the 1st filtering circuit and the 1st output circuit, and the 1st amplifying circuit connects the 1st filtering circuit, and the 1st filtering circuit connects the 1st output circuit.Described zero magnetic flux punching sensor unit comprises zero magnetic flux punching sensor, the 2nd amplifying circuit, the 2nd filtering circuit and the 2nd output circuit, zero magnetic flux punching sensor connects the 2nd amplifying circuit, the 2nd amplifying circuit connects the 2nd filtering circuit, the 2nd filtering circuit connects the 2nd output circuit, and the 2nd output circuit connects the 1st amplifying circuit of analogy signal processing unit.Described data processing unit comprises signal gathering unit, signal processing unit and communication unit, and signal gathering unit is connected with signal processing unit, and signal processing unit is connected with communication unit, and signal gathering unit comprises a slice A/D conversion chip at least.Described display unit comprises display and keyboard composition, and display is connected with data processing unit respectively with keyboard.The phase measurement accuracy of described zero magnetic flux punching sensor is: ± 0.02 degree; Measurement range is: 100 μ A～700mA; Working temperature is :-35 ℃～+ 65 ℃.
This device connects communication bus by the communication unit of data processing unit to insulation of Electric Motor leakage current signal after amplification, filtering, collection, calculating, be uploaded to background computer.
This device is a kind of motor insulated on-line monitoring equipment, can be under the motor operating condition, accurately, the insulation status during operation of continuous monitoring motor, provide reliable data refer for judging the insulation of Electric Motor situation.
(4) description of drawings
Fig. 1 is the utility model motor insulated on-line monitoring instrument structure diagram, wherein 1, zero magnetic flux punching sensor unit, and 2, analogy signal processing unit, 3, data processing unit, 4, display unit, 5, power supply unit, 6, the voltage signal converting unit.
Fig. 2 is the utility model motor insulated on-line monitoring instrument voltage signal acquisition synoptic diagram;
Fig. 3 is the utility model motor insulated on-line monitoring instrument insulation signals collecting synoptic diagram;
Fig. 4 is the utility model motor insulated on-line monitoring instrument program flow diagram;
(5) embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Present embodiment is made of a motor insulated on-line monitoring instrument.Motor insulated on-line monitoring instrument is installed near the motor working condition measuring instrument.
1, near voltage signal acquisition: motor insulated on-line monitoring instrument is installed in the motor working condition measuring instrument, the secondary voltage signal that is used for the measuring voltage mutual inductor, the sample of signal mode of connection is as follows: press signal in the terminal box power taking, cause motor insulated on-line monitoring instrument voltage signal converting unit.
2, insulation signals collecting: the neutral point of threephase motor is opened, after three phase winding first and last ends penetrate zero magnetic flux punching sensor, again with the terminal closed neutral point that forms of three phase windings.
3, analogy signal processing unit amplifies, after filtering, measurement range selection etc. handle, signal is outputed to data processing unit zero magnetic flux punching sensor signal.
4,14 A/D samplings of data processing and display unit control, convert the electrical signal to digital signal, microprocessor adopts harmonic analysis method to analyze to digital signal sequences, by FFT signal is carried out frequency-domain analysis again, calculates signal effective value, phase place, dielectric dissipation factor at last; Through repeatedly measuring and digital filtering method calculates motor such as stable leakage current electric current, dielectric dissipation factor, insulation resistance and moves insulation parameter, show and be uploaded to background computer.
The utility model comprises zero magnetic flux punching sensor unit, voltage signal converting unit, power supply unit, analogy signal processing unit, data processing unit and display unit, zero magnetic flux punching sensor unit connects analogy signal processing unit, the voltage signal converting unit connects analogy signal processing unit, analogy signal processing unit connects data processing unit, data processing unit connects display unit, power supply unit connects zero magnetic flux punching sensor unit, analogy signal processing unit, data processing unit and display unit respectively, and power supply unit is a linear power supply.Described analogy signal processing unit comprises the 1st amplifying circuit, the 1st filtering circuit and the 1st output circuit, and the 1st amplifying circuit connects the 1st filtering circuit, and the 1st filtering circuit connects the 1st output circuit.Described zero magnetic flux punching sensor unit comprises zero magnetic flux punching sensor, the 2nd amplifying circuit, the 2nd filtering circuit and the 2nd output circuit, zero magnetic flux punching sensor connects the 2nd amplifying circuit, the 2nd amplifying circuit connects the 2nd filtering circuit, the 2nd filtering circuit connects the 2nd output circuit, and the 2nd output circuit connects the 1st amplifying circuit of analogy signal processing unit.Described data processing unit comprises signal gathering unit, signal processing unit and communication unit, and signal gathering unit is connected with signal processing unit, and signal processing unit is connected with communication unit, and signal gathering unit comprises a slice A/D conversion chip at least.Described display unit comprises display and keyboard composition, and display is connected with data processing unit respectively with keyboard.The phase measurement accuracy of described zero magnetic flux punching sensor is: ± 0.02 degree; Measurement range is: 100 μ A～700mA; Working temperature is :-35 ℃～+ 65 ℃.
Claims (6)
1. motor insulated on-line monitoring instrument, it comprises zero magnetic flux punching sensor unit, the voltage signal converting unit, power supply unit, analogy signal processing unit, data processing unit and display unit, it is characterized in that: zero magnetic flux punching sensor unit connects analogy signal processing unit, the voltage signal converting unit connects analogy signal processing unit, analogy signal processing unit connects data processing unit, data processing unit connects display unit, power supply unit connects zero magnetic flux punching sensor unit respectively, analogy signal processing unit, data processing unit and display unit, power supply unit are linear power supply.
2. a kind of motor insulated on-line monitoring instrument according to claim 1, it is characterized in that described analogy signal processing unit comprises the 1st amplifying circuit, the 1st filtering circuit and the 1st output circuit, the 1st amplifying circuit connects the 1st filtering circuit, and the 1st filtering circuit connects the 1st output circuit.
3. a kind of motor insulated on-line monitoring instrument according to claim 1, it is characterized in that described zero magnetic flux punching sensor unit comprises zero magnetic flux punching sensor, the 2nd amplifying circuit, the 2nd filtering circuit and the 2nd output circuit, zero magnetic flux punching sensor connects the 2nd amplifying circuit, the 2nd amplifying circuit connects the 2nd filtering circuit, the 2nd filtering circuit connects the 2nd output circuit, and the 2nd output circuit connects the 1st amplifying circuit of analogy signal processing unit.
4. a kind of motor insulated on-line monitoring instrument according to claim 1, it is characterized in that described data processing unit comprises signal gathering unit, signal processing unit and communication unit, signal gathering unit is connected with signal processing unit, signal processing unit is connected with communication unit, and signal gathering unit comprises a slice A/D conversion chip at least.
5. a kind of motor insulated on-line monitoring instrument according to claim 1 is characterized in that described display unit comprises display and keyboard composition, and display is connected with data processing unit respectively with keyboard.
6. a kind of motor insulated on-line monitoring instrument according to claim 3 is characterized in that the phase measurement accuracy of described zero magnetic flux punching sensor is: ± 0.02 degree; Measurement range is: 100 μ A～700mA; Working temperature is :-35 ℃～+ 65 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201675961U CN201637830U (en) | 2010-04-23 | 2010-04-23 | Online motor insulation monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201675961U CN201637830U (en) | 2010-04-23 | 2010-04-23 | Online motor insulation monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201637830U true CN201637830U (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201675961U Expired - Fee Related CN201637830U (en) | 2010-04-23 | 2010-04-23 | Online motor insulation monitor |
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| Country | Link |
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| CN (1) | CN201637830U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680893A (en) * | 2012-05-22 | 2012-09-19 | 李朝晖 | Main insulation fault real-time online early warning device and method for generator |
| CN105717837A (en) * | 2016-02-26 | 2016-06-29 | 王静爽 | Motor shutdown on-line insulation monitoring control method |
-
2010
- 2010-04-23 CN CN2010201675961U patent/CN201637830U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680893A (en) * | 2012-05-22 | 2012-09-19 | 李朝晖 | Main insulation fault real-time online early warning device and method for generator |
| CN105717837A (en) * | 2016-02-26 | 2016-06-29 | 王静爽 | Motor shutdown on-line insulation monitoring control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Online motor insulation monitor Effective date of registration: 20120817 Granted publication date: 20101117 Pledgee: Keli technology investment Company limited by guarantee in Heilongjiang Province Pledgor: Harbin Guoli Electric Co., Ltd. Registration number: 2012230000007 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20130723 Granted publication date: 20101117 Pledgee: Keli technology investment Company limited by guarantee in Heilongjiang Province Pledgor: Harbin Guoli Electric Co., Ltd. Registration number: 2012230000007 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| DD01 | Delivery of document by public notice |
Addressee: Sun Weihua Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Harbin Guoli Electric Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20140423 |