CN209266331U - A kind of breaker with assessment mechanical performance function - Google Patents
A kind of breaker with assessment mechanical performance function Download PDFInfo
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- CN209266331U CN209266331U CN201920280554.XU CN201920280554U CN209266331U CN 209266331 U CN209266331 U CN 209266331U CN 201920280554 U CN201920280554 U CN 201920280554U CN 209266331 U CN209266331 U CN 209266331U
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- connecting rod
- displacement
- breaker
- acquisition device
- shaft
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Abstract
A kind of breaker with assessment mechanical performance function, belongs to low voltage electrical apparatus technology field.Breaker includes contact system, operating mechanism, shaft and sensor module, operating mechanism drives shaft rotation, shaft band movable contact system is acted, it is characterized by: sensor module includes connecting rod and displacement acquisition device, connecting rod one end is articulated in shaft, the other end of connecting rod is connect with displacement acquisition device, is equipped with displacement sensor on displacement acquisition device, the displacement that the end for measuring connecting rod is slided on displacement acquisition device.Cooperate linear displacement transducer to measure displacement using connecting rod, to assess the abrasion condition of contact abrasion and operating mechanism itself, easy to operate, measurement accuracy height is installed, it is low in cost.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of open circuit with assessment mechanical performance function
Device.
Background technique
Breaker is installed in circuit for disjunction fault current, plays the role of protection load.Each phase of breaker
Line includes a pair of contact system that can close parallel circuit, and the contact system includes moving contact and static contact, the dynamic touching
It realizes and the closure of static contact or separates after head movement.The movement of contact can realize by different modes, specifically, for
For some powerful breakers (especially rated current is more than 1000A), the input for being used for example as route end is set safely
It is standby, it needs high electrodynamic stress and contact is actuated by the lever system for being couple to rotary shaft, and described rotary shaft itself is by band
There are two the toggle mechanisms of pivot rods to actuate.
When breaker operates every time, contact is more or less worn, in the case where being especially in the presence of electric arc, contact
Abrasion becomes apparent from.After carrying out a large amount of conjunction point operations, the abrasion of contact may cause breaker and breaks down breaker, influence
The safety and reliability of the breaker.In order to reduce this risk, usually after breaker operator pre-determined number systematically
Replacement contact even replaces entire breaker, the actual wear without considering contact.But this method not can solve and ask at all
Topic, because the abrasion loss of contact is all different every time after operation, due to the abrasion that can not accurately determine to operate back contact every time
Amount, it is possible to the occurrence of leading to two kinds: the first situation, after breaker repeatedly cut-offs biggish fault current,
Not up to pre-determined number when the breaker can not safely and reliably operate, not can avoid the generation of accident actually；Second
Situation, when breaker reaches scheduled number, contact is far from reaching the danger zone of abrasion, causes putting aside as useless too early for equipment.
Therefore, the ability of contact integrality is assessed to judge contact actual wear amount, is therefrom obtained surplus in relation to contact
The information that remaining service life or service life terminate will bring significant advantage to the use of breaker.For it is some without
For the high-power breaker often acted, in attended operation, the state of routine visual assessment contact abrasion, such as on contact
Equipped wear indicator.This operation is only capable of carrying out in the case where cut-off breaker, and for security application, i.e. breaker is only even
The case where that is threaded off and contact generally remains closure, this inspection are enough.But the other application for developing is come
It says, such as the breaker used on wind turbine apparatus, number of operations are continuously increased, and require the durability of contact higher,
Problem is brought if carrying out visual inspection contact with default maintenance time interval and is not able to satisfy actual needs.
In the prior art, there is on-line monitoring breaker contact point abrasion condition or circuit breaker operation mechanism abrasion condition
Technology, as described in Chinese invention patent publication number CN103197235A by measure operating mechanism connect with contact part
Axis changes in the acting characteristic of making process, to detect contact wear and mechanism wear situation.Motion parts in sensor used
It is mounted in connecting shaft, another detection part is fixed on circuit breaker base or shell, and motion parts are not contacted with detection part.
Angular displacement is measured using magnetic sensor in the prior art, the sensor price is high, increases the cost of breaker.
In view of above-mentioned problem, the applicant has made actively effectively to explore, and forms finally and will be detailed below being situated between
The technical solution to continue.
Summary of the invention
The task of the utility model is to provide for a kind of breaker with assessment mechanical performance function, and connecting rod is used to match
Linear displacement transducer is closed to measure displacement, to assess the abrasion condition of contact abrasion and operating mechanism itself, there is knot
Structure is reliable, installs easy to operate, measurement accuracy height, feature low in cost.
What the task of the utility model was performed by, a kind of breaker with assessment mechanical performance function is described
Breaker include contact system, operating mechanism, shaft and sensor module, the operating mechanism drives the shaft to turn
Dynamic, the shaft band movable contact system is acted, and the sensor module includes connecting rod and displacement acquisition device, described
Connecting rod one end be articulated in shaft, the other end of the connecting rod is connect with displacement acquisition device, the described displacement acquisition dress
It sets and displacement sensor is installed, the displacement that the end for measuring the connecting rod is slided on displacement acquisition device.
In a specific embodiment of the utility model, the connecting rod is the first company that two radicles are fixed to each other
Bar and second connecting rod, the first connecting rod and second connecting rod are straight-bar, and one end of the first connecting rod and shaft are hinged,
One end of the second connecting rod is slidably connected on displacement acquisition device.
In another specific embodiment of the utility model, the connecting rod is " ┌ " shape.
In another specific embodiment of the utility model, the displacement sensor is optocoupler sensor.
In another specific embodiment of the utility model, the shaft includes axis body and is fixed on the axis
Bracket on body, the bracket include the carrier base being fixedly mounted on the circular shaft face of axis body and extend out from carrier base
Cantilever arm, one end of the cantilever arm and the connecting rod is hinged.
In the utility model there are one in specific embodiment, the cantilever arm is straight-bar.
In a specific embodiment in turn of the utility model, the displacement acquisition device includes sliding part and cunning
Slotware, the sliding part slide in the sliding slot of the spout, and the sliding part is installed on the close displacement of connecting rod
One end of acquisition device, the displacement that the displacement acquisition device measurement sliding part slides on spout.
In the utility model more and in a specific embodiment, the sliding slot of the spout is sliding for " ten " font
Slot, the sliding part are located in the level trough of " ten " font sliding slot.
In the utility model more and then in a specific embodiment, the sliding part is cylinder.
Linear displacement transducer is cooperated to measure displacement using connecting rod in the utility model, forms displacement-time curve
Figure, to assess the abrasion condition of contact abrasion and operating mechanism itself, to take corresponding measure, extends making for breaker
With the service life, have structure reliable, easy to operate, measurement accuracy height, feature low in cost are installed.
Detailed description of the invention
Fig. 1 is the cooperation schematic diagram of operating mechanism described in the utility model, shaft and contact system.
Fig. 2 is the cooperation schematic diagram of shaft described in the utility model and sensor.
Fig. 3 is the structural schematic diagram of sensor described in the utility model.
Fig. 4 is status diagram when contact system described in the utility model is in separating brake.
Fig. 5 is status diagram of the breaker described in the utility model when dynamic and static contact just contacts in making process.
Fig. 6 is that dynamic and static contact described in the utility model is in the status diagram closed a floodgate when stablizing.
Fig. 7 is operating mechanism and contact system when dynamic and static contact described in the utility model is in combined floodgate stable state
Schematic diagram.
Fig. 8 is the Parameter Map of sensor described in the utility model detection.
In figure: 1. static contacts, 11. stationary contacts；2. moving contact, 21. movable contacts, 22. touch springs；3. operating mechanism；4.
Shaft, 41. axis bodies, 42. pendulums, 43. brackets, 431. carrier bases, 432. cantilever arms；5. sensor module, 51. connecting rods, 511.
First connecting rod, 512. second connecting rods, 52. displacement acquisition devices, 521. sliding parts, 522. spouts, 53. displacement sensors.
Specific embodiment
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing, but is not to the description of embodiment
Limitation to technical solution, it is any to change in the form rather than substance that all to should be considered as this practical new according to the utility model design
The protection scope of type.
The concept of all directionality for being related to upper, lower, left, right, front and rear or directionality is all in the following description
On the basis of position shown in FIG. 1, thus the special limit to technical solution provided by the utility model cannot be understood as
It is fixed.
As shown in Fig. 1, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the utility model relates to a kind of with the disconnected of assessment mechanical performance function
Road device, the breaker include contact system, operating mechanism 3, shaft 4 and sensor module 5, and the contact system includes
Static contact 1 and moving contact 2, the moving contact 2 are realized the contact between the static contact 1 or are separated after swinging.It is described
Static contact 1 include stationary contact 11, the moving contact 2 includes movable contact 21, both the stationary contact 11 and movable contact 21
It is engaged.The operating mechanism 3 drives the moving contact 2 to move by shaft 4, and the shaft 4 is an axis class
Part is rotatably arranged on operating mechanism 3 or is rotatably arranged on the shell outside contact system.
As shown in Figure 1, Figure 2 and Figure 3, the shaft 4 includes axis body 41, the pendulum 42 being fixed on the axis body 41
With bracket 43.Quantity of the quantity of the pendulum 42 corresponding to moving contact 2, generally three or four.The operation machine
Structure 3 drives shaft 4 to swing by pendulum 42.The bracket 43 includes the recess being fixedly mounted on the circular shaft face of axis body 41
Interior carrier base 431 and the cantilever arm 432 extended out from carrier base 431.The sensor module 5 is measurement straight line position
The displacement sensor component of shifting comprising connecting rod 51 and the displacement acquisition device 52 being connected with 51 one end of connecting rod, in the position
It moves on acquisition device 52 and displacement sensor 53 is installed.Displacement is acquired by displacement sensor 53.The connecting rod 51
The other end connect shaft 4, specifically, the cantilever arm 432 on the other end of the connecting rod 51 and the bracket 43 is hinged.
In general, the displacement sensor 53 can be a variety of sensors for meeting the requirements form.It is preferred that displacement sensor 53 uses light
Coupling sensor.When the displacement sensor 53 is optocoupler sensor, it is located at two insides of displacement acquisition device 52.It is described
The effect of connecting rod 51 be that the angle variables for rotating the shaft 4 are converted to and are connected on connecting rod 5 with displacement acquisition device 52
End straight-line displacement amount, and shown by the measurement of displacement sensor 53.The cantilever arm 432 is straight-bar, institute
The connecting rod 51 stated also is straight-bar, specifically, the connecting rod 51 includes the first connecting rod 511 and second that two radicles are fixed to each other
Connecting rod 512 can not also be divided into first connecting rod 511 and second connecting rod 512 certainly, and as a whole, connect at this time in order to optimize
The shape of bar 51, makes it meet installation requirements, the connecting rod 51 can be set as " ┌ " shape.The displacement acquisition device 52 wraps
Sliding part 521 and spout 522 are included, the sliding part 521 slides in the sliding slot of the spout 522.Described
One connecting rod 511 and the cantilever arm 432 on the bracket 43 are hinged, are also known as rotatablely connected.The sliding part 521 is installed on
One end of the close displacement acquisition device 52 of two connecting rods 512.Preferably, the sliding part 521 is cylinder.The sliding slot
Part 522 has the sliding slot of " ten " font, and the sliding part 521 is located in the level trough of " ten " font sliding slot, to ensure that
The sliding part 521 will not be detached from out of sliding slot in sliding.The sliding part 521 slides in sliding slot, and at it
It in the course of work, can not be detached from out of described sliding slot, the sliding slot of " ten " font exactly meets above-mentioned requirement.The cunning
During moving part 521 slides in the spout 522, the position at record sliding part 521 corresponding moment, so as to be formed
The relation curve of time and displacement, to realize measurement of the displacement acquisition device 52 to the displacement of sliding part 521.This
In scheme, it is converted into the rotational angle of the shaft 4 on the displacement acquisition device 52
Straight-line displacement amount.
Continuing with Fig. 4, Fig. 5, Fig. 6 and Fig. 7 is read, the specific combined floodgate described between moving contact 2 and static contact 1 is moved through
Journey: firstly, as shown in figure 4, being in discrete state between the moving contact 2 and static contact 1.Operating mechanism 3 close a floodgate dynamic
After work, the operating mechanism 3 drives the shaft 4 to rotate, and shaft 4 drives the moving contact 2 to swing after rotating, and with
The static contact 1 contacts, as shown in Figure 5.After the moving contact 2 touches static contact 1, the moving contact
Touch spring 22 in 2 compresses, and when operating mechanism 3 is behind dead point, the moving contact 2 and static contact 1 enter stable state,
As shown in Figure 6.As shown in fig. 7, the shaft 4 equally has corresponding turn in moving contact 2 and 1 making process of static contact
Dynamic position, meanwhile, the displacement acquisition device 52 is recorded and is rotated and band by shaft 4 accordingly according to the turned position of shaft 4
The straight-line displacement amount of dynamic 51 end of connecting rod.
Fig. 8 is the schematic diagram that the displacement acquisition device 52 records relevant parameter during contact system is closed.
The displacement acquisition device 52 measures the corresponding time of shaft 4 and straight-line displacement parameter, shape in contact system closing course
At the curve of diagram.The value of record is as follows: the first particular value, is equal to needed for the first inflection point A reached on displacement s change curve
The first time T0 wanted, the first inflection point A correspond to the displaced position that shaft 4 reaches the maximum rotational speed moment；Second
Particular value, equal to reaching, the second time T1 needed for Second Inflexion Point B, the Second Inflexion Point B on displacement s change curve are corresponding
In the theoretical final mean annual increment movement position reached when static contact 1 and moving contact 2 are located at closed position；Calculate the first inflection point A and
Shift differences S2 between two inflection point B；According to the difference diagnostic machinery wear condition between calculated value and theoretical value.When this
Kind is the parameter of optimal two values point, and simultaneously diagnostic machinery abrasion can be also compared with corresponding theoretical value by measuring other points
Situation.Multilevel iudge by this method, can be specifically to the mechanical wear of breaker, such as contact abrasion, operating mechanism 3
The abrasion of body is confirmed.When reaching the critical value for needing to change component, open circuit can be extended by replacing corresponding components
The service life of device.
With continued reference to Fig. 8, the determination of following parameter is judged to judge whether operating mechanism 3 reaches lock state
Whether the operating mechanism 3 reaches the end-state of combined floodgate by dead point.Firstly, right on determining displacement s change curve
Should at the time of reaching the first partial maximum value C on the change curve Tmax third particular value, the first partial is maximum
Value C corresponds to the maximum displacement distance Smax that shaft 4 reaches in closing course；Determine the correspondence on displacement s change curve
In the 4th particular value of the final mean annual increment movement distance Sfinal reached when static contact 1 and moving contact 2 are located at closed position；It calculates
Displacement difference S1 between maximum displacement value Smax and final mean annual increment movement Sfinal；According to the displacement difference S1 diagnostic operation mechanism
Whether 3 reach lock state.By whether reaching the judgement of lock state to operating mechanism 3, so that described in the utility model
Technical solution obtains additional technical effect, i.e., for detecting whether the operating mechanism 3 reaches lock state.
Claims (9)
1. it is a kind of with assessment mechanical performance function breaker, the breaker include contact system, operating mechanism (3),
Shaft (4) and sensor module (5), the operating mechanism (3) drive shaft (4) rotation, the shaft (4) band
Movable contact system is acted, it is characterised in that: the sensor module (5) includes connecting rod (51) and displacement acquisition device
(52), the connecting rod (51) one end is articulated on shaft (4), the other end and displacement acquisition device of the connecting rod (51)
(52) it connects, displacement sensor (53) is installed on the displacement acquisition device (52), for measuring the connecting rod (51)
End in displacement acquisition device (52) displacement that slides.
2. a kind of breaker with assessment mechanical performance function according to claim 1, it is characterised in that the company
Bar (51) is two the radicles first connecting rod (511) and second connecting rod (512) that are fixed to each other, the first connecting rod (511) and
Second connecting rod (512) is straight-bar, one end of the first connecting rod (511) and shaft (4) hingedly, the second connecting rod
(512) one end is slidably connected on displacement acquisition device (52).
3. a kind of breaker with assessment mechanical performance function according to claim 1, it is characterised in that the company
Bar (51) is " ┌ " shape.
4. a kind of breaker with assessment mechanical performance function according to claim 1, it is characterised in that the position
Displacement sensor (53) is optocoupler sensor.
5. a kind of breaker with assessment mechanical performance function according to claim 1, it is characterised in that described turns
Axis (4) includes axis body (41) and the bracket (43) that is fixed on the axis body (41), and the bracket (43) includes fixed peace
Carrier base (431) on the circular shaft face of axis body (41) and the cantilever arm (432) extended out from carrier base (431), institute
One end of the cantilever arm (432) stated and the connecting rod (51) is hinged.
6. a kind of breaker with assessment mechanical performance function according to claim 5, it is characterised in that described stretches
Arm (432) is straight-bar out.
7. a kind of breaker with assessment mechanical performance function according to claim 1, it is characterised in that the position
Moving acquisition device (52) includes sliding part (521) and spout (522), and the sliding part (521) is in the spout
(522) sliding, the sliding part (521) are installed on the one of the close displacement acquisition device (52) of connecting rod (51) in sliding slot
End, the displacement that displacement acquisition device (52) measurement sliding part (521) slides on spout (522).
8. a kind of breaker with assessment mechanical performance function according to claim 7, it is characterised in that the cunning
The sliding slot of slotware (522) is " ten " font sliding slot, and the sliding part (521) is located in the level trough of " ten " font sliding slot.
9. a kind of breaker with assessment mechanical performance function according to claim 7, it is characterised in that the cunning
Moving part (521) is cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920280554.XU CN209266331U (en) | 2019-03-06 | 2019-03-06 | A kind of breaker with assessment mechanical performance function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920280554.XU CN209266331U (en) | 2019-03-06 | 2019-03-06 | A kind of breaker with assessment mechanical performance function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209266331U true CN209266331U (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920280554.XU Active CN209266331U (en) | 2019-03-06 | 2019-03-06 | A kind of breaker with assessment mechanical performance function |
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| CN (1) | CN209266331U (en) |
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2019
- 2019-03-06 CN CN201920280554.XU patent/CN209266331U/en active Active
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