CN205622455U - Be used for monitoring of aerogenerator axle voltage and protection return circuit - Google Patents
Be used for monitoring of aerogenerator axle voltage and protection return circuit Download PDFInfo
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- CN205622455U CN205622455U CN201620476378.3U CN201620476378U CN205622455U CN 205622455 U CN205622455 U CN 205622455U CN 201620476378 U CN201620476378 U CN 201620476378U CN 205622455 U CN205622455 U CN 205622455U
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- carbon brush
- aerogenerator
- resistance
- fuse
- electric capacity
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Abstract
The utility model provides a be used for monitoring of aerogenerator axle voltage and protection return circuit, includes four carbon brush T1~T4, fuse rr, resistance R, electric capacity C1 and sampling resistor rs, carbon brush T1 and aerogenerator excitation end macroaxis in close contact with, its other end ground connection, carbon brush T2 and T3 respectively with generator excitation side macroaxis and driving side macroaxis in close contact with, carbon brush T2 and T3 lead -out wire are as generator shaft voltage measurement point, carbon brush T4 and aerogenerator driving side macroaxis in close contact with, the carbon brush T4 other end is connected with fuse rr, and fuse rr's the other end and electric capacity C1 and resistance R are connected, sampling resistor rs one end ground connection, the other end is connected with electric capacity C1 and resistance R. The utility model discloses can restrict the aerogenerator shaft current and be not more than 10mA, can restrict the destruction of a voltage high frequency impulse to the aerogenerator bearing film simultaneously to the protection bearing, extend bearing life improves fan power generation benefit.
Description
Technical field
This utility model relates to a kind of for wind turbine shaft voltage monitoring and protective loop.
Background technology
Bearing of wind power generator damage comparison is frequent, and can not find bearing damage reason, for searching bearing damage reason and protecting the bearing from shaft voltage and the destruction of shaft current high-frequency impulse, needs monitoring and the protective loop of a kind of practicality.
Summary of the invention
The purpose of this utility model is to provide a kind of for wind turbine shaft voltage monitoring and protective loop, can be used for searching bearing damage reason and protecting the bearing from shaft voltage and shaft current high-frequency impulse destruction.
This utility model adopts the following technical scheme that a kind of for wind turbine shaft voltage monitoring and protective loop; including four carbon brush T1～T4, fuse Rr, resistance R, electric capacity C1 and sample resistance Rs; carbon brush T1 is in close contact with the big axle of wind power generator exciting end, carbon brush T1 other end ground connection；Carbon brush T2 and T3 axle big with generator excitation side respectively and the big axle of driving side are in close contact, and carbon brush T2 and T3 lead-out wire are as generator shaft voltage measurement point；Carbon brush T4 is in close contact with the big axle of wind-driven generator driving side, and the carbon brush T4 other end is connected with fuse Rr, and the other end of fuse Rr is connected with electric capacity C1 and resistance R, and sample resistance Rs one end ground connection, the other end is connected with electric capacity C1 and resistance R.
This utility model also has following technical characteristic: when shaft current is more than 10mA, fuse Rr disconnects.
The beneficial effects of the utility model and advantage have: this utility model can limit wind-driven generator shaft current and be not more than 10mA; the shaft voltage high-frequency impulse destruction to bearing of wind power generator oil film can be limited simultaneously; thus protect bearing, extend bearing service life, improve wind turbine power generation benefit.
Accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present utility model.
Detailed description of the invention
With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings:
Embodiment
1
As it is shown in figure 1, it is a kind of for wind turbine shaft voltage monitoring and protective loop, including four carbon brush T1～T4, fuse Rr, resistance R, electric capacity C1 and sample resistance Rs.Carbon brush T1 is in close contact with the big axle of wind power generator exciting end, other end ground connection；Carbon brush T2 and T3 axle big with generator excitation side respectively and the big axle of driving side are in close contact, and carbon brush T2 and T3 lead-out wire are as generator shaft voltage measurement point；Carbon brush T4 is in close contact with the big axle of wind-driven generator driving side, and the T4 other end is connected with fuse Rr, and the other end of fuse Rr is connected with electric capacity C1 and resistance R, and sample resistance Rs one end ground connection, the other end is connected with electric capacity C1 and resistance R；When shaft current is more than 10mA; fuse Rr disconnects; limit shaft current and be not more than 10mA; simultaneously; the RC loop being made up of electric capacity C1, resistance R and resistance Rs can limit the shaft voltage high-frequency impulse destruction to bearing of wind power generator oil film; thus protect bearing, extend bearing service life, improve the power benefit of wind-driven generator.
Claims (2)
1. one kind is used for wind turbine shaft voltage monitoring and protective loop; including four carbon brush T1～T4, fuse Rr, resistance R, electric capacity C1 and sample resistance Rs; it is characterized in that, carbon brush T1 is in close contact with the big axle of wind power generator exciting end, carbon brush T1 other end ground connection；Carbon brush T2 and T3 axle big with generator excitation side respectively and the big axle of driving side are in close contact, and carbon brush T2 and T3 lead-out wire are as generator shaft voltage measurement point；Carbon brush T4 is in close contact with the big axle of wind-driven generator driving side, and the carbon brush T4 other end is connected with fuse Rr, and the other end of fuse Rr is connected with electric capacity C1 and resistance R, and sample resistance Rs one end ground connection, the other end is connected with electric capacity C1 and resistance R.
One the most according to claim 1 is used for wind turbine shaft voltage monitoring and protective loop, it is characterised in that: when shaft current is more than 10mA, fuse Rr disconnects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620476378.3U CN205622455U (en) | 2016-05-24 | 2016-05-24 | Be used for monitoring of aerogenerator axle voltage and protection return circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620476378.3U CN205622455U (en) | 2016-05-24 | 2016-05-24 | Be used for monitoring of aerogenerator axle voltage and protection return circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622455U true CN205622455U (en) | 2016-10-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620476378.3U Active CN205622455U (en) | 2016-05-24 | 2016-05-24 | Be used for monitoring of aerogenerator axle voltage and protection return circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205622455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303648A (en) * | 2018-02-07 | 2018-07-20 | 广州发展集团股份有限公司 | The monitoring device and its monitoring method of generator's motor shaft operating status |
| CN108957317A (en) * | 2018-06-06 | 2018-12-07 | 广东核电合营有限公司 | Detection method, device, computer and the storage medium of pressurized-water reactor nuclear power plant generating set bearing shell |
-
2016
- 2016-05-24 CN CN201620476378.3U patent/CN205622455U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303648A (en) * | 2018-02-07 | 2018-07-20 | 广州发展集团股份有限公司 | The monitoring device and its monitoring method of generator's motor shaft operating status |
| CN108957317A (en) * | 2018-06-06 | 2018-12-07 | 广东核电合营有限公司 | Detection method, device, computer and the storage medium of pressurized-water reactor nuclear power plant generating set bearing shell |
| CN108957317B (en) * | 2018-06-06 | 2021-01-26 | 广东核电合营有限公司 | Method and device for detecting bearing bush of generator set of pressurized water reactor nuclear power station, computer and storage medium |
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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: Be used for monitoring of aerogenerator axle voltage and protection return circuit Effective date of registration: 20180928 Granted publication date: 20161005 Pledgee: Harbin bank Limited by Share Ltd. Harbin New District Science and technology sub branch Pledgor: HARBIN GUOLI ELECTRICAL CO.,LTD. Registration number: 2018230000012 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190612 Granted publication date: 20161005 Pledgee: Harbin bank Limited by Share Ltd. Harbin New District Science and technology sub branch Pledgor: HARBIN GUOLI ELECTRICAL CO.,LTD. Registration number: 2018230000012 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Be used for monitoring of aerogenerator axle voltage and protection return circuit Effective date of registration: 20190624 Granted publication date: 20161005 Pledgee: Harbin bank Limited by Share Ltd. Harbin New District Science and technology sub branch Pledgor: HARBIN GUOLI ELECTRICAL CO.,LTD. Registration number: 2019230000003 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220621 Granted publication date: 20161005 Pledgee: Harbin bank Limited by Share Ltd. Harbin New District Science and technology sub branch Pledgor: HARBIN GUOLI ELECTRICAL CO.,LTD. Registration number: 2019230000003 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |