CN2539331Y - Rotating speed protector for generator set - Google Patents
Rotating speed protector for generator set Download PDFInfo
- Publication number
- CN2539331Y CN2539331Y CN 02205943 CN02205943U CN2539331Y CN 2539331 Y CN2539331 Y CN 2539331Y CN 02205943 CN02205943 CN 02205943 CN 02205943 U CN02205943 U CN 02205943U CN 2539331 Y CN2539331 Y CN 2539331Y
- Authority
- CN
- China
- Prior art keywords
- generating set
- switch
- rotating speed
- generator
- fan
- 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
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- Control Of Eletrric Generators (AREA)
- Synchronous Machinery (AREA)
Abstract
The utility model discloses a protection unit used in the rotational speed of the generator set, comprising a fan 1 which is connected with the rotor of the generator, which is characterized in that the center of the fan is provided with two wiring terminals 2, 4 which are connected with exciting windings of the generator through the centrifugal switch 7. Each wiring terminal is hinged with a switch sheet 6 on which a reset spring 5 is positioned. The switch sheets will be on when the rotational speed of the rotor N is less than 3300r/min while being off when the speed is more than 3300r/min. The utility model has the advantages of maximum use of available resources, low cost, simple structure and easy process, particularly, strengthening the speed protection of the generator set, preventing the generator set and the electric appliance from being burnt down in high rotational speed and voltage overtension caused by misoperation.
Description
Technical field
The utility model step and a kind of generating set protective device particularly relate to a kind of generator speed protective device of protecting generating set and consumer electronics can not break down because of generator speed is too high of being used to.
Background technology
When generating set is worked; if the too high situation of rotating speed occurs because of some cause; just cause voltage to raise possibly and therefore burn or damage generating set and consumer electronics; for fear of this situation occurring; need provide certain restricted protection to this generating set, that is to say, when the generating set rotating speed is too high; make this generating set be in off state by its safeguard measure, thereby realize protection generating set and consumer electronics.
Summary of the invention
The purpose of this utility model is to provide a kind of generating set rotating speed protective device that can overcome the defective that exists in the prior art; 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 purpose of this utility model is achieved in that a kind of generating set rotating speed protective device; it 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 the structure of rotating described centrifugal switch 7 synchronously 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, and when the rotational speed N of generator amature during greater than 3300 rev/mins, two switch plates are in off-state.
Adopt generating set rotating speed protective device of the present utility model, owing to structurally improve at existing generating set, maximally utilise existing resource, cost is low, and is simple in structure, easy to make; Especially increased generating set overspeed protection function, made generating set can not cause overtension, burnt the phenomenon of generating set, consumer electronics because of generating unit speed that misoperation causes is too high.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation that centrifugal switch is in opening.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
See also accompanying drawing 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, are provided with two binding posts 2,4 in the central position of fan, 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, a hinged switch plate 6 on each binding post, and switch plate is provided with return spring 5; 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, and 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, and 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.
In sum, employing the utility model can be transformed on the basis of existing generating set, and 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.
The inventor utilizes the utility model to make overtesting on four-stroke-cycle all-purpose gasoline generating set, and effect is comparatively desirable, can reach the purpose of aforementioned utility model fully, generating set and consumer electronics are played a very good protection, and performance is highly stable.
Claims (4)
1, a kind of generating set rotating speed protective device; it 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.
2, generating set rotating speed protective device according to claim 1 is characterized in that: described generator amature and fan coaxial (3), and rotation synchronously.
3, generating set rotating speed 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, and when the rotational speed N of generator amature during greater than 3300 rev/mins, two switch plates are in off-state.
4, generating set rotating speed 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 |
|---|---|---|---|
| CN 02205943 CN2539331Y (en) | 2002-03-14 | 2002-03-14 | Rotating speed protector for generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02205943 CN2539331Y (en) | 2002-03-14 | 2002-03-14 | Rotating speed protector for generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2539331Y true CN2539331Y (en) | 2003-03-05 |
Family
ID=33687460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02205943 Expired - Fee Related CN2539331Y (en) | 2002-03-14 | 2002-03-14 | Rotating speed protector for generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2539331Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738968A (en) * | 2012-07-04 | 2012-10-17 | 李荣华 | Fan-type motor centrifugal switch |
| CN109846425A (en) * | 2017-11-30 | 2019-06-07 | 科沃斯机器人股份有限公司 | From mobile clean robot and its control method |
-
2002
- 2002-03-14 CN CN 02205943 patent/CN2539331Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738968A (en) * | 2012-07-04 | 2012-10-17 | 李荣华 | Fan-type motor centrifugal switch |
| CN109846425A (en) * | 2017-11-30 | 2019-06-07 | 科沃斯机器人股份有限公司 | From mobile clean robot and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |