CN105785264A - Circuit breaker state monitoring device - Google Patents
Circuit breaker state monitoring device Download PDFInfo
- Publication number
- CN105785264A CN105785264A CN201610266012.8A CN201610266012A CN105785264A CN 105785264 A CN105785264 A CN 105785264A CN 201610266012 A CN201610266012 A CN 201610266012A CN 105785264 A CN105785264 A CN 105785264A
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- Prior art keywords
- contact
- state
- sensor
- fault alarm
- auxiliary contact
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Breakers (AREA)
- Emergency Alarm Devices (AREA)
Abstract
A circuit breaker state monitoring device provided by the present invention comprises a fault alarm contact and a state monitoring unit comprising a first sensor, a controller and a communication interface, wherein when a fault current occurs in a main loop of a circuit breaker to cause the circuit breaker to trip, the position of the fault alarm contact changes, the first sensor senses the changed position of the fault alarm contact, the controller monitors the fault trip state of the circuit breaker based on the position sensed by the first sensor, and the information correlated with the fault trip state is transmitted out via the communication interface.
Description
Technical field
The present invention relates to circuit field, relate more specifically to a kind of State-Inspect of High-Voltage Circuit device.
Background technology
As a rule, owing to the electric current of the main contact in chopper is relatively larger or voltage ratio is higher, it is impossible to the directly monitoring combined floodgate of main contact, gate-dividing state.Generally, it is necessary in the outside of chopper, an assembled auxiliary contact monitors the combined floodgate of main contact, gate-dividing state；And needing an assembled fault alarm contact in the outside of chopper to carry out the state that monitoring breaker is threaded off because of fault, wherein fault alarm contact only just can action when chopper is because of fault trip.
The operation principle of current auxiliary contact is: the handle of auxiliary contact links with the handle of chopper；When breaker closing or separating brake, the handle of the handle strip dynamic auxiliary contact of chopper moves together；The closing of contact of the handle strip dynamic auxiliary contact of auxiliary contact or disconnection, make connected display lamp or buzzer line be switched on or switched off, and shows combined floodgate or the gate-dividing state of chopper.
The operation principle of current fault alarm contact is: the dropout driving lever of fault alarm contact links with the dropout driving lever of chopper；When threading off due to faults such as load-side appearance short circuit or overloads when chopper, the dropout driving lever of chopper is prior to the handle action of chopper, drive the dropout driving lever action of fault alarm contact, and then normally open position when making the contact of fault alarm contact from breaker closing is transformed into make position, connect the display lamp in auxiliary line, buzzer etc., the fault trip state of display or prompting chopper.
It can be seen that current auxiliary contact and/or the application of fault alarm contact be machine driving contact principle to realize the monitoring of circuit-breaker status, take up room relatively big, structure is complicated, relatively costly.
Summary of the invention
The invention provides the State-Inspect of High-Voltage Circuit device of a kind of novelty.
State-Inspect of High-Voltage Circuit device according to an embodiment of the invention, including: fault alarm contact；And Condition Monitoring Unit, including first sensor, controller and communication interface, wherein when the electric current that breaks down in the major loop of chopper causes circuit breaker tripping, fault alarm contact generation position change, position after first sensor sensing fault alarm contact generation position change, controller is based on the fault trip state of the position monitoring chopper sensed by first sensor, and the information about fault trip state is spread out of via communication interface.
State-Inspect of High-Voltage Circuit device according to another embodiment of the present invention, including: auxiliary contact；And Condition Monitoring Unit, including the second sensor, controller and communication interface, wherein when breaker closing or separating brake, auxiliary contact generation position change, the position of the second sensor sensing auxiliary contact, controller is based on by the combined floodgate of position monitoring chopper of the second sensor sensing or gate-dividing state, and the information of relevant combined floodgate or gate-dividing state is spread out of via communication interface.
State-Inspect of High-Voltage Circuit device according to embodiments of the present invention reduces cost than traditional accessories apparatus, reduces the installing space of State-Inspect of High-Voltage Circuit device simultaneously.
Accompanying drawing explanation
The present invention can be more fully understood that below in conjunction with in the accompanying drawing description to the specific embodiment of the present invention, wherein:
Fig. 1 is that State-Inspect of High-Voltage Circuit device according to embodiments of the present invention is connected the schematic diagram used with chopper；
Fig. 2 is the structural representation that fault alarm contact 1, auxiliary contact 2 and moving contact 4 are installed together；
Fig. 3 is the structure chart of the rivet 7 being arranged on moving contact 4 by fault alarm contact 1 and auxiliary contact 2；
Fig. 4 is the structure front view of moving contact 4；
The structure sectional view that Fig. 5 is fault alarm contact 1 and auxiliary contact 2 is linked together by rivet 7 and moving contact 4；
Fig. 6 is the structural representation of fault alarm contact base 12；
Fig. 7 is the structural representation of auxiliary contact seat 22.
Detailed description of the invention
Feature and the exemplary embodiment of various aspects of the invention are described more fully below.In the following detailed description, it is proposed that many details, in order to complete understanding of the present invention is provided.But, it will be apparent to those skilled in the art that the present invention can implement when some details in not needing these details.Below the description of embodiment is only used to by illustrating that the example of the present invention provides being better understood from the present invention.The present invention is never limited to any concrete configuration set forth below and algorithm, but covers any amendment, replacement and the improvement of element, parts and algorithm under the premise of without departing from the spirit of the present invention.In the the accompanying drawings and the following description, it does not have known structure and technology are shown, in order to avoid the present invention causes unnecessary obscuring.
The invention provides a kind of State-Inspect of High-Voltage Circuit device, wherein fault alarm contact and auxiliary contact can be arranged on circuit breaker internal, Condition Monitoring Unit is arranged on the side of the non-thickness direction of chopper.Condition Monitoring Unit includes first sensor, the second sensor, controller and communication interface, controller is based on the position monitoring circuit-breaker status of the position of the fault alarm contact sensed by first sensor and the auxiliary contact of the second sensor sensing, and the information about circuit-breaker status spread out of to such as via communication interface, remote monitoring center.This State-Inspect of High-Voltage Circuit device reduces cost than traditional accessories apparatus, reduces the installing space of State-Inspect of High-Voltage Circuit device simultaneously.
Fig. 1 is that State-Inspect of High-Voltage Circuit device according to embodiments of the present invention is connected the schematic diagram used with chopper.As it is shown in figure 1, this State-Inspect of High-Voltage Circuit device includes fault alarm contact 1, auxiliary contact 2 and Condition Monitoring Unit 3.Wherein, fault alarm contact 1 is installed together with moving contact 4 rotationally；Auxiliary contact 2 is fixedly mounted on moving contact 4；Condition Monitoring Unit 3 is in the side of the non-thickness direction of chopper and together with being fixedly mounted with chopper, including controller 311, first sensor the 312, second sensor 313 and communication interface (not shown).
In the embodiment shown in fig. 1, when the major loop of chopper breaks down electric current time, breaker mechanism can under the effect of overcurrent protective device trigger action.Now, there is the position change relative to moving contact 4 in fault alarm contact 1, wherein snap close 5 is a part for the operating mechanism of chopper under the effect of moving contact 4 and snap close 5, and its one end is through the Long Circle hole of fault alarm contact 1.When first sensor 312 senses the position signalling of fault alarm contact 1 generation and sends this position signalling to controller 311, this position signalling can be analyzed processing by controller 311, thus realizing the monitoring of the fault trip state to chopper.Then, the information of the fault trip state about chopper can be spread out of by controller 311 via communication interface.
That is, when the major loop of chopper breaks down electric current time, position change is there is in fault alarm contact 1 under the effect of moving contact 4, first sensor 312 senses the position after position change occurs fault alarm contact 1, controller 311 is based on the position sensed by first sensor 312, the fault trip state of monitoring breaker, and spread out of through the information of the fault trip state about chopper via communication interface.
In the embodiment shown in fig. 1, when breaker closing or separating brake, moving contact 4 drives auxiliary contact 2 to move together (without with auxiliary contact 2, relative motion occurring), makes the position of relative second sensor 313 of auxiliary contact 2 change.Auxiliary contact 2 is when chopper is in closing position, the position of distance the second sensor 313 is nearest, second sensor 313 can sense the stronger position signalling that auxiliary contact 2 produces, and this position signalling is sent to controller 311 be analyzed process, controller 311 based on this stronger position signalling realize chopper "on" position monitoring.Auxiliary contact 2 is when chopper is in open position, the position of distance the second sensor 313 is farthest, the position signalling that auxiliary contact 2 that second sensor 313 senses produces can die down and even disappear, and controller 311 dies down based on this or the position signalling that disappears realizes the gate-dividing state monitoring of chopper.Then, controller 311 will spread out of about the combined floodgate of chopper or the information of gate-dividing state via communication interface.
That is, when breaker closing or separating brake, auxiliary contact 2 moves together with moving contact 3, second sensor 313 senses the position of auxiliary contact 2, controller 311 is based on the combined floodgate of the position monitoring chopper sensed by the second sensor 313 or gate-dividing state, and will spread out of about the combined floodgate of chopper or the information of gate-dividing state via communication interface.
In certain embodiments, fault alarm contact 1 and auxiliary contact 2 can individually use, it is also possible to use simultaneously.If being used alone fault alarm contact 1, the second sensor 313 in Condition Monitoring Unit 3 can be removed；If being used alone auxiliary contact 2, the first sensor 312 in Condition Monitoring Unit 3 can be removed.
In certain embodiments, first sensor and the second sensor can be Hall elements, and fault alarm contact and auxiliary contact can include Magnet respectively.When the position of fault alarm contact or auxiliary contact changes, the position of first sensor or the second sensor can be produced different strong and weak field signal by the Magnet being fixed thereon, first sensor or the second sensor are by sensing, to different strong and weak field signals, the position signalling generating fault alarm contact or auxiliary contact, and this position signalling is passed to controller, by controller based on this position signalling monitoring breaker state.
Fig. 2 is the structural representation that fault alarm contact 1, auxiliary contact 2 and moving contact 4 are installed together.As in figure 2 it is shown, fault alarm contact 1 includes fault alarm contact base 12 and Magnet 11；Auxiliary contact 2 includes auxiliary contact seat 22 and Magnet 21；Fault alarm contact 1 and auxiliary contact 2 are linked together by rivet 7 and moving contact 4.Here, Magnet 11 and Magnet 21 can be the same or different, and fault alarm contact base 12 and auxiliary contact seat 22 can be made up of non-permeable material.
Fig. 3 is the structure chart of the rivet 7 being arranged on moving contact 4 by fault alarm contact 1 and auxiliary contact 2.As it is shown on figure 3, rivet 7 is the rivet with step, including the second rivet shaft and rivet head that the first rivet shaft that length is L1, length are L2.Wherein, the diameter of the first rivet shaft is ∮ B, and the diameter of the second rivet shaft is ∮ A, and the diameter of rivet head is ∮ C.
Fig. 4 is the structure front view of moving contact 4.The structure sectional view that Fig. 5 is fault alarm contact 1 and auxiliary contact 2 is linked together by rivet 7 and moving contact 4.Mounting structure below in conjunction with Fig. 4 and Fig. 5, detailed description fault alarm contact 1 and auxiliary contact 2 with moving contact 4.
As shown in Figure 4 and Figure 5, fault alarm contact 1 is linked together by rivet 7 and moving contact 4.The length L1 of the first rivet shaft of rivet 7 is slightly larger than the maximum gauge of fault alarm contact 1；The length L2 of the second rivet shaft of rivet 7 is more than the thickness of moving contact 4；The diameter ∮ C of the rivet head of rivet 7 is slightly larger than the diameter of the rivet hole in fault alarm contact 1；The diameter ∮ A ' of the rivet hole 61 of moving contact 4 is slightly larger than the diameter ∮ A of the second rivet shaft of rivet 7, and is slightly less than the diameter ∮ B of the first rivet shaft of rivet 7；Which ensure that and still have gap between fault alarm contact 1 and moving contact 4 after fault alarm contact 1 and moving contact 4 are riveted.Owing to leaving gap between the rivet hole 61 of rivet 7 and fault alarm contact 1, so fault alarm contact 1 can relatively rotate after being connected with moving contact 4.
As shown in Figure 4 and Figure 5, auxiliary contact 2 is linked together by rivet 7 and moving contact 4.Auxiliary contact 2 is provided with the stepped hole coordinated with rivet 7；The length L1 of the first rivet shaft of rivet 7 is slightly less than in the thickness of moving contact 4 and the stepped hole of auxiliary contact 2 degree of depth sum of large hole；Gap is not had between moving contact 4 and auxiliary contact 2, so auxiliary contact 2 is fixing relative to the position of moving contact 4 after being connected with moving contact 4 after which ensure that auxiliary contact 2 and moving contact 4 riveted joint.
Those skilled in the art should be understood that, though it is shown that utilize, there is the example that fault alarm contact 1, auxiliary contact 2 and moving contact 4 are linked together by the rivet 7 of step, but the rivet without step or screw can also be utilized in other embodiments fault alarm contact 1, auxiliary contact 2 and moving contact 4 to be linked together.
Fig. 6 is the structural representation of fault alarm contact base 12.As shown in Figure 6, fault alarm contact 12 include rivet hole, the round boss that is arranged on rivet hole and Magnet placing trough.Wherein, Magnet 11 is placed in the Magnet placing trough of fault alarm contact base 12, generally circular in shape or the U-shaped (circle shown in figure is exemplarily) of this Magnet placing trough, the sidewall of this Magnet placing trough is provided with a plurality of, such as more than 3 the perpendicular muscle of fillet, the diameter of a circle of cutting that the perpendicular muscle of these fillets is formed is slightly less than the diameter of Magnet 11, makes to produce local interference fit between Magnet 11 and fault alarm contact base 12.In certain embodiments, it is possible to high temperature resistant glue, Magnet 11 is bonded on fault alarm contact base 12, to prevent Magnet 11 from coming off after being in use heated.
It should be noted that, in certain embodiments, round boss shown in Fig. 6 is provided only on fault alarm contact 1 and contacts with moving contact 4 on the edge of rivet hole of side, to reduce the contact surface of fault alarm contact base 12 and moving contact 4, and then reduce the frictional force produced in motor process between moving contact 4 and fault alarm contact 1.
Fig. 7 is the structural representation of auxiliary contact seat 22.As it is shown in fig. 7, auxiliary contact seat 22 includes Magnet placing trough and rivet hole.Wherein, there is the limit features of projection at auxiliary contact seat 22 edge, to ensure to be kept at an angle between auxiliary contact 2 and moving contact 4, and prevents auxiliary contact 2 from relatively rotating around rivet 7, makes auxiliary contact 2 and moving contact 4 be fixedly installed togather.Magnet 21 is placed in the Magnet placing trough of auxiliary contact seat 22, generally circular in shape or the U-shaped (U-shaped shown in figure is exemplarily) of this Magnet placing trough, the sidewall of this Magnet placing trough is provided with a plurality of, such as more than 3 the perpendicular muscle of fillet, the tangential circle diameter that the perpendicular muscle of these fillets is formed is dimensioned slightly smaller than the diameter of Magnet 21, makes to produce local interference fit between Magnet 21 and auxiliary contact seat 22.In certain embodiments, it is possible to high temperature resistant glue, Magnet 21 is bonded on fault alarm contact base 22, to prevent Magnet 21 from coming off after being in use heated.
In certain embodiments, Condition Monitoring Unit 3 can by with screw, snap fit or in combination with mode and chopper be installed together.Control device to be arranged in state detection unit 3.Control device and include controller 311, first sensor the 312, second sensor 313 and communication interface.Controller 311 is after the position signalling that first sensor 312 and the second sensor 313 are sensed is analyzed process, it is possible to knows circuit-breaker status and the information about circuit-breaker status can be spread out of via communication interface.In certain embodiments, controller 311 can utilize light or acoustical signal, indicates circuit-breaker status.
State-Inspect of High-Voltage Circuit device according to embodiments of the present invention is simpler than traditional auxiliary contact and fault alarm contact accessory structure, reduces cost.Meanwhile, Condition Monitoring Unit 3 can be installed in the side of the non-thickness direction of chopper, such that it is able to effectively save installing space.
The present invention can realize in other specific forms, without deviating from its spirit and substitutive characteristics.Therefore, current embodiment is all counted as being exemplary rather than determinate in all respects, the scope of the invention but not foregoing description definition, further, the whole changes in the implication of claim and the scope of equivalent are fallen into thus being all included within the scope of the invention.
Claims (10)
1. a State-Inspect of High-Voltage Circuit device, it is characterised in that including:
Fault alarm contact；And
Condition Monitoring Unit, including first sensor, controller and communication interface, wherein
When the electric current that breaks down in the major loop of described chopper causes described circuit breaker tripping, described fault alarm contact generation position change,
Described first sensor senses the position after described fault alarm contact generation position change,
Described controller, based on the position sensed by described first sensor, is monitored the fault trip state of described chopper, and the information about described fault trip state is spread out of via described communication interface.
2. State-Inspect of High-Voltage Circuit device as claimed in claim 1, it is characterised in that also include:
Auxiliary contact, wherein
Described Condition Monitoring Unit also includes the second sensor,
When described breaker closing or separating brake, described auxiliary contact generation position change,
Described second sensor senses the position of described auxiliary contact,
Described controller, based on the position by described second sensor sensing, is monitored combined floodgate or the gate-dividing state of described chopper, and the information about described combined floodgate or gate-dividing state is spread out of via described communication interface.
3. State-Inspect of High-Voltage Circuit device as claimed in claim 1 or 2, it is characterised in that
Together with described fault alarm contact is installed in rotation on the moving contact of described chopper,
When the electric current that breaks down in the major loop of described chopper causes described circuit breaker tripping, there is position change in described fault alarm contact under the effect of described moving contact.
4. State-Inspect of High-Voltage Circuit device as claimed in claim 3, it is characterised in that
Together with described auxiliary contact is fixedly mounted with the moving contact of described chopper,
When described breaker closing or separating brake, described auxiliary contact moves together with described moving contact.
5. State-Inspect of High-Voltage Circuit device as claimed in claim 1, it is characterised in that described Condition Monitoring Unit is positioned at the side of the non-thickness direction of described chopper.
6. State-Inspect of High-Voltage Circuit device as claimed in claim 2, it is characterised in that described first sensor and the second sensor are Hall element.
7. State-Inspect of High-Voltage Circuit device as claimed in claim 6, it is characterised in that described fault alarm contact includes fault alarm contact base and Magnet, together with described Magnet is fixedly mounted with described fault alarm contact base.
8. State-Inspect of High-Voltage Circuit device as claimed in claim 6, it is characterised in that described auxiliary contact includes auxiliary contact seat and Magnet, together with described Magnet is fixedly mounted with described auxiliary contact seat.
9. a State-Inspect of High-Voltage Circuit device, it is characterised in that including:
Auxiliary contact；And
Condition Monitoring Unit, including the second sensor, controller and communication interface, wherein
When described breaker closing or separating brake, described auxiliary contact generation position change,
Described second sensor senses the position of described auxiliary contact,
Described controller, based on the position by described second sensor sensing, is monitored combined floodgate or the gate-dividing state of described chopper, and the information about described combined floodgate or gate-dividing state is spread out of via described communication interface.
10. State-Inspect of High-Voltage Circuit device as claimed in claim 9, it is characterised in that
Together with described auxiliary contact is fixedly mounted with the moving contact of described chopper,
When described breaker closing or separating brake, described auxiliary contact moves together with described moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610266012.8A CN105785264B (en) | 2016-04-25 | 2016-04-25 | State-Inspect of High-Voltage Circuit device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610266012.8A CN105785264B (en) | 2016-04-25 | 2016-04-25 | State-Inspect of High-Voltage Circuit device |
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| Publication Number | Publication Date |
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| CN105785264A true CN105785264A (en) | 2016-07-20 |
| CN105785264B CN105785264B (en) | 2018-06-08 |
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| CN201610266012.8A Active CN105785264B (en) | 2016-04-25 | 2016-04-25 | State-Inspect of High-Voltage Circuit device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108872839A (en) * | 2018-04-23 | 2018-11-23 | 珠海格力电器股份有限公司 | A kind of contactor is attracted the detection method of failure, apparatus and system |
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| CN108872839B (en) * | 2018-04-23 | 2021-05-04 | 珠海格力电器股份有限公司 | Method, device and system for detecting pull-in fault of contactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105785264B (en) | 2018-06-08 |
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