CN201388124Y - Novel generator group protecting device - Google Patents
Novel generator group protecting device Download PDFInfo
- Publication number
- CN201388124Y CN201388124Y CN200920137602U CN200920137602U CN201388124Y CN 201388124 Y CN201388124 Y CN 201388124Y CN 200920137602 U CN200920137602 U CN 200920137602U CN 200920137602 U CN200920137602 U CN 200920137602U CN 201388124 Y CN201388124 Y CN 201388124Y
- Authority
- CN
- China
- Prior art keywords
- switch
- protecting device
- fan
- group protecting
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Synchronous Machinery (AREA)
Abstract
The utility model relates to a novel generator group protecting device which comprises a fan 1 which is connected with a generator rotor. The novel generator group protecting device is characterized in that the central portion of the fan is provided with two wiring terminals 2, 4, the wiring terminals are connected with an excitation winding of the generator, and the two wiring terminals are connected through a centrifugal switch 7. The structure of the centrifugal switch 7 is that a switch piece 6 is hinged on each wiring terminal, a restoring spring 5 is arranged on the switch piece, and when the rotary speed N of the generator rotor is bigger than 3300 r/m, the two switch pieces are in disconnecting states. The novel generator group protecting device maximally utilizes existing resources, has the characteristics of low cost, simple structure and convenient manufacture, and is an ideal novel generator group protecting device.
Description
Technical field
The utility model relates to a kind of new-generation unit protective device.
Background technology
When generating set is worked; if the too high situation of rotating speed occurs because of some cause; burn with regard to causing voltage to raise possibly or damage generating set and consumer electronics; for fear of this situation occurring; need provide certain restricted protection to this generating set; promptly when the generating set rotating speed is too high, make this generating set auto-cutout, thereby realize protection generating set and consumer electronics by its safeguard measure.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part and a kind of new-generation unit protective device is provided; when the generating set rotating speed is too high; automatically cut off the generating unit excitation winding; protection generating set, consumer electronics can not cause overtension because of generating unit speed is too high, burn generating set, consumer electronics.
The utility model is realized in the following way: the utility model comprises the fan 1 that links to each other with generator amature, it is characterized in that: the central position at fan is provided with two binding posts 2,4, this binding post connects the excitation winding of generator, links to each other by centrifugal switch 7 between two binding posts.Described generator amature and fan are coaxial 3, and rotation synchronously.
The structure of described centrifugal switch 7 is, a hinged switch plate 6 on each binding post, and switch plate 25 is provided with return spring 5; When the rotational speed N of generator amature during less than 3300 rev/mins, two switch plates are in closure state; When the rotational speed N of generator amature during greater than 3300 rev/mins, two switch plates are in off-state.
Adopt generating set protective device of the present utility model; owing to structurally carried out improvement, maximally utilised existing resource at existing generating set; and cost is low, simple in structure, easy to make; increased generating set overspeed protection function simultaneously; make generating set can not cause overtension, burn the phenomenon of generating set, consumer electronics because of generating unit speed that misoperation causes is too high.
Description of drawings
Fig. 1 structural representation of the present utility model;
Fig. 2 centrifugal switch is in the structural representation of opening;
Embodiment
The utility model embodiment now is described in detail in detail in conjunction with the accompanying drawings, and as shown in Figure 1, the rotor of generating set links to each other with fan 1 by rotating shaft 3 in the existing generating set, and both rotate synchronously.Improvements of the present utility model are: the central position of fan is provided with two binding posts 2,4, and this binding post connects the excitation winding of generator, links to each other by centrifugal switch 7 between two binding posts.The structure of described centrifugal switch 7 is that a hinged switch plate 6 is provided with return spring 5 on each binding post on switch plate; The shape of switch plate 6 similar " Ji " shape, it is made by electric conducting material.
When the rotational speed N of generator amature during less than 3300 rev/mins, the centrifugal force that rotation is produced is less, because the effect of return spring 5, two switch plates are in closure state, and excitation winding is in on-state, and generating set can operate as normal, as shown in Figure 1.When the rotational speed N of generator amature during greater than 3300 rev/mins, the centrifugal force that rotation is produced is bigger, this centrifugal force is greater than the active force of return spring 5, at this moment, two switch plates are in off-state under action of centrifugal force, as shown in Figure 2, excitation winding disconnects, generating set quits work: when rotating speed was lower than 3300 rev/mins, two switch plates were in closure state again, recovered normal.Determining of the closure of centrifugal switch, the critical point of connection can select different springs to realize according to different generating sets.
The utility model can be transformed on the basis of existing generating set, need not change the general structure of generating set, thereby, can maximally utilise existing resource, save cost.Generating set after repacking has the hypervelocity automatic protection functions, has avoided too high because of misoperation or generating unit speed that fault causes, and causes that output voltage is too high, thereby the phenomenon of generating set, consumer electronics occurs burning.
Claims (4)
1, a kind of new-generation unit protective device; comprise the fan (1) that links to each other with generator amature; it is characterized in that: the central position at fan is provided with two binding posts (2,4); this binding post connects the excitation winding of generator, links to each other by centrifugal switch (7) between two binding posts.
2, a kind of new-generation unit protective device according to claim 1 is characterized in that: described generator amature and fan coaxial (3), and rotation synchronously.
3, a kind of new-generation unit protective device according to claim 1 and 2 is characterized in that: the structure of described centrifugal switch (7) is, a hinged switch plate (6) on each binding post, and switch plate is provided with return spring (5); When the rotational speed N of generator amature during less than 3300 rev/mins, two switch plates are in closure state; When the rotational speed N of generator amature during greater than 3300 rev/mins, two switch plates are in off-state.
4, a kind of new-generation unit protective device according to claim 3 is characterized in that: the shape of described switch plate (6) similar " Ji " shape, it is made by electric conducting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920137602U CN201388124Y (en) | 2009-04-14 | 2009-04-14 | Novel generator group protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920137602U CN201388124Y (en) | 2009-04-14 | 2009-04-14 | Novel generator group protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201388124Y true CN201388124Y (en) | 2010-01-20 |
Family
ID=41580669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920137602U Expired - Fee Related CN201388124Y (en) | 2009-04-14 | 2009-04-14 | Novel generator group protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201388124Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594402A (en) * | 2019-09-20 | 2019-12-20 | 聂征 | Stepless electric driving gearbox |
-
2009
- 2009-04-14 CN CN200920137602U patent/CN201388124Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594402A (en) * | 2019-09-20 | 2019-12-20 | 聂征 | Stepless electric driving gearbox |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205070852U (en) | Motor switching control device that is just reversing | |
| CN204464961U (en) | Motor overcurrent protection warning device | |
| CN201388124Y (en) | Novel generator group protecting device | |
| CN201689858U (en) | 10-kV controllable combined-type over-voltage fuse protector | |
| CN202545111U (en) | Blackout feathering control system of permanent magnet variable pitch wind-driven generator set | |
| CN201733111U (en) | Main circuit of active CROWBAR of double-fed wind-driven generator | |
| CN2539331Y (en) | Rotating speed protector for generator set | |
| CN202634337U (en) | Three-phase motor brake apparatus for electric actuator | |
| CN2865112Y (en) | Tower type crane slewing gear brake | |
| CN203596769U (en) | Novel Y-delta starting box | |
| CN203056437U (en) | Omnipotent breaker sliding plate mechanism | |
| CN205016994U (en) | Motor open -phase protection circuit | |
| CN201323442Y (en) | Multifunctional motor protective electricity economizer | |
| CN201717819U (en) | Circuit board for bipolar double-speed motor | |
| CN201905046U (en) | Plastic belt disc mower with battery terminal protecting device | |
| CN201766008U (en) | Star-triangle switching isolation switch for transformer | |
| CN110417116A (en) | A kind of flywheel-type power supply device | |
| CN203260540U (en) | Manual switch-on/switch-off misoperation-preventing device | |
| CN202134900U (en) | Open phase protective device of three-phase AC motor | |
| CN201616358U (en) | Energy storage quick-acting mechanism of miniature circuit breaker | |
| CN203434639U (en) | Grid-connected control device of wind turbine generator | |
| CN203055833U (en) | Novel breaker's moving contact | |
| CN202817717U (en) | Simple motor open-phase protector | |
| CN102606400A (en) | Power-loss feathering control system for permanent magnet pitch variation wind driven generator set | |
| CN202268680U (en) | Automatic switching device for electric motor fuse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100120 Termination date: 20120414 |