CN103377860B - Chopper and the method for monitoring breaker contact abrasion degree - Google Patents
Chopper and the method for monitoring breaker contact abrasion degree Download PDFInfo
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- CN103377860B CN103377860B CN201210119151.XA CN201210119151A CN103377860B CN 103377860 B CN103377860 B CN 103377860B CN 201210119151 A CN201210119151 A CN 201210119151A CN 103377860 B CN103377860 B CN 103377860B
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Abstract
The present invention provides a kind of chopper, and this chopper includes：Moving contact, it includes pedestal and is arranged on pedestal and can be with respect to the fingertip of base motion；Potentiometer, this potentiometer is fixedly mounted on pedestal；And connecting line, one end of this connecting line is fixed on fingertip, the other end is fixed on potentiometric sliding handle, so that fingertip can drive this sliding handle to slide on potentiometer to cause the change of potentiometric output voltage via this connecting line with respect to the motion of pedestal.The monitoring of the abrasion condition to contact can be achieved at low cost by the above-mentioned chopper of the present invention.The present invention also provides a kind of method monitoring contact abrasion situation by aforementioned chopper.
Description
Technical field
The present invention relates to the method for chopper and monitoring breaker contact abrasion degree.
Background technology
Chopper is the common equipment of electric field, and its life-span leads in normal use and on the premise of there is not major accident
To depend on its contact abrasion degree.If it is possible to real-time monitoring contact abrasion degree, then it can be avoided that user is because touch
Head serious wear and do not take measures in time and cause damage or accident.
Some choppers of the prior art have so-called " contact abrasion monitoring function ", however, these choppers
Contact abrasion monitoring function is the degree of wear by calculating contact, and what the degree of wear of non-measured contact obtained.For example, exist
In prior art, chopper for a certain model it is assumed that its from brand-new state to contact abrasion to can not use normal
N times can be experienced close a floodgate (fingertip that i.e. fingertip of moving contact contacts static contact), then a brand-new chopper experiences M combined floodgate
Afterwards, the percent degree of the abrasion of contact can be assumed as M/N, and therefore, chopper of the prior art can be disconnected by monitoring
Road device closing frequencies, thus extrapolate contact abrasion degree.However, this projectional technique is inaccurate, because, many factors meeting
The abrasion to contact caused by each combined floodgate/disjunction of impact chopper, for example, each breaking current of chopper experience
Size may and differ, consequently, it is possible to leading to the abrasion to chopper different, and the aforesaid degree of wear by contact supposes
Way for M/N does not obviously account for these practical factors, thus causing measurement inaccurate.
Accordingly, there exist and there is demand to a kind of such chopper, i.e. this chopper is capable of the contact of monitoring breaker
Actual physics abrasion condition.Correspondingly, demand be there is also to the method for the contact abrasion situation that can accurately measure chopper.
It is expected that the actual physics abrasion condition of the contact of monitoring breaker there may be multiple methods, for example, lead to
Cross the abrasion condition that laser position sensors monitor moving contact and/or static contact.However, not going out to be now able in prior art
Monitor the chopper of the abrasion condition of moving contact and/or static contact by such as laser position sensors, it main reason is that,
In fact, laser measurement method impracticable, because the structure of laser position sensors is relatively complicated, cost is of a relatively high
And generally require single specific voltage source, this makes laser position sensors are applied in chopper and will lead to chopper
Volume and cost rising.
Therefore, in the prior art, supervised in real time to the contact abrasion degree to chopper can be achieved at low cost
There is demand in the chopper surveyed and method.
Content of the invention
According to above-mentioned shortcoming and defect, the purpose of the present invention is at least to solve the above-mentioned problems in the prior art.
In a preferred embodiment of the invention, provide a kind of chopper, this chopper includes：Moving contact, this is dynamic tactile
Head includes pedestal and is arranged on pedestal and can be with respect to the fingertip of base motion；Potentiometer, this potentiometer is fixedly mounted
On pedestal；And connecting line, one end of this connecting line is fixed on fingertip, and the other end is fixed on potentiometric sliding handle
On, so that fingertip can drive this sliding handle to slide to draw on potentiometer via this connecting line with respect to the motion of pedestal
Play the change of potentiometric output voltage.Thus, potentiometric output voltage and its change reflect that the fingertip of moving contact is relative
Displacement in pedestal.In the making process of the moving contact of chopper, first, the pedestal of moving contact and fingertip jointly towards
The static contact motion of chopper, after the fingertip of moving contact touches the fingertip of static contact, the fingertip of moving contact is due to static contact
Backstop and stopping continue towards static contact motion, but, the pedestal of moving contact continues towards static contact and moves to one and sets in advance
Fixed fixed position, and then moving contact is firmly pressed on static contact, in this compaction process, the pedestal of moving contact and touching
Refer to relative motion, this relative motion will drive the motion of potentiometric sliding handle.In the case of dynamic/static contact closes a floodgate,
Due to the effect of the spring force between the fingertip of moving contact and the pedestal of moving contact, the fingertip of moving contact exists towards static contact
The trend of fingertip motion, that is, away from the trend of the base motion of moving contact, that is, makes potentiometric sliding handle towards static contact
The trend of motion, it is therefore contemplated that arriving, because the pedestal of moving contact always moves to same making a reservation in each making process
Position, therefore, with the abrasion of dynamic/static contact, the fingertip location of more situation lower moving contacts that wear and tear in dynamic/static contact
With dynamic/static contact abrasion less in the case of compared with by the pedestal further from moving contact so that potentiometric sliding handle
Closer to static contact side.In other words, the abrasion of dynamic/static contact can be characterized as the change of the position of potentiometric sliding handle,
And then show as the change of potentiometric output voltage.Therefore, monitoring be can reach by the potentiometric output voltage of monitoring disconnected
Effect of the contact abrasion situation of road device.Because the structure of potentiometer itself is simple and with low cost, so that as described above
The chopper of construction will not make structure and cost increase too much due to the increase of monitoring function.
In above-mentioned preferred embodiment, connecting line is preferably made up of the stretch-proof material being electrically insulated, so that by
The fingertip of the moving contact leading in the abrasion of contact is reflected as potentiometric slip with change 1: 1 ground of the distance between pedestal
The distance change of handle, and do not affect other electric properties of chopper.
It is preferable that connecting line is made up of chinlon litzendraht wire in above-mentioned arbitrary preferred embodiment.
In above-mentioned arbitrary preferred embodiment it is preferable that potentiometer be arranged on pedestal cavity in, thus so that
Potentiometric installation can't lead to the volume of chopper to increase, thus being conducive to the miniaturization of chopper.
In above-mentioned arbitrary preferred embodiment it is preferable that be connected with a spring on potentiometric sliding handle so that
Connecting line is in extended state all the time.
It is preferable that chopper also includes a control unit, potentiometric outfan in above-mentioned arbitrary preferred embodiment
Be electrically connected to the control unit of chopper with real-time monitoring this potentiometric output voltage, thus, it is possible to by means of chopper this
The control unit of body without introducing new measurement apparatus, is conducive to the structure letter of chopper to measure potentiometric output voltage
Dan Hua.
It is preferable that chopper also includes a control unit, potentiometric input in above-mentioned arbitrary preferred embodiment
The control unit being electrically connected to chopper is to obtain a constant input voltage from this control unit, extra thus without one
Voltage source to provide voltage for potentiometer, thus being conducive to simplifying the structure of chopper.
It is preferable that control unit includes calculating chopper through break-make several times in above-mentioned arbitrary preferred embodiment
The computing unit of contact abrasion degree afterwards, the wherein degree of wear is expressed as | V0-Vi|/|V0-V1|, wherein V0Represent chopper
The output voltage obtaining, V is measured first when contact not yet weares and teares1The contact abrasion representing this chopper is to when will use
Measure the output voltage obtaining, ViRepresent that chopper measures the output voltage obtaining, wherein V after break-make several times0And V1Point
Wei not a constant.
It is preferable that the size of input voltage is between 0-5 volt in above-mentioned arbitrary preferred embodiment.
In a preferred embodiment of the invention, a kind of monitoring breaker contact abrasion journey after break-make several times is also provided
The method of degree, the method includes：One potentiometer is provided；This potentiometer is fixedly mounted in the pedestal of the moving contact of chopper
On；There is provided on a connecting line, and the fingertip of moving contact one end of this connecting line being fixed on chopper, the other end is fixed on electricity
On the sliding handle of position meter, so that fingertip can drive this sliding handle in electricity via this connecting line with respect to the motion of pedestal
Slide on the meter of position；Potentiometric input is connected to the control unit of chopper constant defeated to obtain one from this control unit
Enter voltage；Potentiometric outfan is connected to the control unit of chopper；In the normally closed state of the moving contact of chopper
Lower this potentiometric output voltage of measurement；Calculate contact abrasion degree after break-make several times for the chopper, journey of wherein wearing and tearing
Degree is expressed as | V0-Vi|/|V0-V1|, wherein V0Represent that the contact of chopper measures, when not yet wearing and tearing, the output voltage obtaining first,
V1Represent the output voltage that the contact abrasion of this chopper obtains, V to measurement when will useiIf representing, chopper passes through
Measure, after dry break-make, the output voltage obtaining.Thus, with it, a reality with contact can be provided at low cost
The chopper of the real-time monitoring of physical abrasion situation.
It is preferable that V in aforesaid preferred embodiment0And V1By carrying out testing obtaining in advance to the chopper of same model
, and be stored in the control unit of chopper as known parameters.
It is preferable that methods described also includes setting a threshold for contact abrasion degree in above-mentioned arbitrary preferred embodiment
Value, when the value of the contact abrasion degree that Practical Calculation obtains is more than this threshold value, control unit exports an alarm signal.Thus,
May remind the user that and change and/or maintenance chopper on most suitable opportunity.
In above-mentioned arbitrary preferred embodiment it is preferable that alarm signal can for acoustical signal, optical signalling or
Acoustical signal and the combination of optical signalling.
It is preferable that the method is also included calculated contact abrasion degree in above-mentioned arbitrary preferred embodiment
Value export the display floater of control unit to be shown in real time, thus being conducive to user easily to check chopper at any time
Contact abrasion situation.
It is preferable that connecting line is made up of the stretch-proof material being electrically insulated in above-mentioned arbitrary preferred embodiment.
It is preferable that connecting line is made up of chinlon litzendraht wire in above-mentioned arbitrary preferred embodiment.
In above-mentioned arbitrary preferred embodiment it is preferable that on the pedestal that this potentiometer is fixedly mounted in moving contact
Step include potentiometer is fixedly mounted in the cavity of pedestal.
It is preferable that cavity is the manufacturing process itself due to the pedestal of moving contact in above-mentioned arbitrary preferred embodiment
Required and formed technique cavity, thus, it is possible to dexterously utilize moving contact the technique cavity of itself, without design or make
Make one dedicated for installing potentiometric cavity, this is conducive to the reduction of whole manufacturing cost.
In above-mentioned arbitrary preferred embodiment it is preferable that wherein, methods described can also be included potentiometric slip
One spring is connected on handle so that connecting line is in extended state all the time.
It is preferable that the size of input voltage may be set between 0-5 volt in above-mentioned arbitrary preferred embodiment.
It should be appreciated that foregoing description is used for the purpose of exemplary purpose, rather than the scope of the present invention to be limited.
Brief description
Above and other feature of the exemplary embodiment of the present invention and advantage will be detailed from following combination accompanying drawing
Description becomes readily apparent from, and this description and accompanying drawing being for illustration only property purpose rather than to limit the present invention by any way
Scope, wherein：
Fig. 1 is the schematic diagram of the moving contact illustrating chopper according to a preferred embodiment of the invention；
Fig. 2 is the potentiometric enlarged diagram illustrating in the chopper shown in Fig. 1；And
Fig. 3 is to illustrate monitoring breaker according to a preferred embodiment of the invention contact abrasion journey after break-make several times
The flow chart of the method for degree.
Specific embodiment
Each exemplary embodiment of the present invention is described below with reference to accompanying drawings.
For the present invention aforementioned and other technology contents, feature and effect, in following cooperation refer to the attached drawing to embodiment
Detailed description in, can clearly present.The direction term being previously mentioned in following examples, for example：Upper and lower, left and right, front
Or after etc., it is only the direction of refer to the attached drawing.Therefore, the direction term of use is used to explanation not for limiting the present invention, this
Outward, in whole embodiments, identical drawing reference numeral represents identical element.
In a preferred embodiment of the invention, as shown in figure 1, it illustrates according to a preferred embodiment of the invention
The schematic diagram of the moving contact of chopper, chopper includes：Moving contact, this moving contact includes pedestal 1 and is arranged on pedestal 1 and energy
Enough fingertips 2 with respect to base motion；Potentiometer 3, this potentiometer is fixedly mounted on pedestal 1；And connecting line 4, this is even
One end (being illustrated as left end) of wiring is fixed on fingertip 2, and the other end (being illustrated as right-hand member) is fixed on potentiometric
On sliding handle 31, so that fingertip 2 can drive this sliding handle 31 to exist via this connecting line 4 with respect to the motion of pedestal 1
(being illustrated as horizontally slipping) is slided on potentiometer to cause the change of potentiometric output voltage.
In the making process of the moving contact of chopper, first, the pedestal 1 of moving contact and fingertip 2 are jointly towards open circuit
Static contact (static contact is not shown in FIG, but it is to be understood that it is located at the left side of the fingertip 2) motion of device, when moving contact
After fingertip 2 touches the fingertip of static contact, the fingertip 2 of moving contact stops due to the backstop of static contact continuing towards static contact fortune
Dynamic, but, the pedestal 1 of moving contact may proceed to move to one towards static contact together with potentiometer 3 fixed thereon and presets
Fixed position, and then moving contact is firmly pressed on static contact.In this compaction process, the pedestal of moving contact 1 and touching
Refer to 2 and relative motion (usually fingertip pivots with respect to pedestal) occurs.Preferably, potentiometric sliding handle 31 is connected with one
Back-moving spring (not shown) is so that connecting line is in extended state all the time.So, the pedestal 1 of moving contact and fingertip 2
Connecting line 4 by tension is driven the sliding handle 31 of potentiometer 3 to move by relative motion.Further, in dynamic/static contact
In the case of combined floodgate, due to the effect of the spring force between the fingertip 2 of moving contact and the pedestal 1 of moving contact, the fingertip 2 of moving contact
There is the trend (in FIG for the left) of the fingertip motion towards static contact, i.e. away from the trend of pedestal 1 motion of moving contact,
I.e. so that the sliding handle 31 of potentiometer 3 is towards the cephalomotor trend of stationary contact, it is therefore contemplated that arriving, due to the base of moving contact
Seat 1 always moves to same precalculated position, therefore, with the abrasion of dynamic/static contact, in dynamic/static contact in each making process
The fingertip leftmost side (side contacting with the static contact) location of more situation lower moving contacts of wearing and tearing and dynamic/static contact
Compare the pedestal 1 further from moving contact in the case of wearing and tearing less, so that potentiometric sliding handle is also closer to quiet
Contact side.In other words, the abrasion of dynamic/static contact can be characterized as the change of the position of potentiometric sliding handle, and then characterizes
Change for potentiometric output voltage.Therefore, can reach the dynamic of monitoring breaker by monitoring potentiometric output voltage
Effect of total wear extent of static contact.
Under combined floodgate situation, for a brand-new chopper, the sliding handle 31 of potentiometer 3 is in position P0, in this feelings
Potentiometric output voltage V can be measured under shape0.When this chopper uses the contact abrasion of chopper to will make
Used time, under combined floodgate situation, the sliding handle 31 of potentiometer 3 is in position P1, (for the situation of Fig. 1, position P1Will be positioned at position
Put P0Left side), potentiometric output voltage V can be measured in this case1.Accordingly, for the chopper of a certain model, can
So that V is obtained according to experiment measurement0And V1Value.And the chopper of the normal use for this model, it is through break-make several times
Afterwards, under combined floodgate situation, the sliding handle 31 of potentiometer 3 is in position Pi, (for the situation of Fig. 1, position PiWill be positioned at position
P0With position P1Between), potentiometric output voltage V can be measured in this casei, thus, it is possible to be calculated chopper
Contact abrasion degree after break-make several times | V0-Vi|/|V0-V1| (it represents that actual wear amount accounts for chopper from brand-new shape
State is to the ratio that will be unable to total wear extent that use state is experienced).For example, the degree of wear | V0-Vi|/|V0-V1| for 0, then
Represent that the dynamic/static contact of chopper does not all wear and tear；The degree of wear | V0-Vi|/|V0-V1| for 0.5 then it represents that the sound of chopper is touched
Head should wear and tear half, and its service life has lost substantially half；The degree of wear | V0-Vi|/|V0-V1| for 1 then it represents that breaking
The dynamic/static contact of road device is completely worn out, will use.
By the description above it will be appreciated that for given input voltage, for the chopper of given model, V0And V1Logical
Cross the chopper to same model and carry out experiment and be obtained ahead of time, respectively one constant.V0And V1Can be used as the open circuit of a certain model
The known constant of device, as the calculating degree of wear | V0-Vi|/|V0-V1| known parameters.Especially, for having control unit
Chopper, this known constant V0And V1Can be stored in this control unit, and can be by the computing unit of control unit
Calculate | V0-Vi|/|V0-V1| value.Thus, it is only required to potentiometric output electricity will be measured after break-make several times in chopper
Pressure Vi, by expression formula | V0-Vi|/|V0-V1| just can learn the contact abrasion situation of chopper.
For in aforesaid preferred embodiment, connecting line 4 is preferably made up of the stretch-proof material being electrically insulated, thus permissible
Connecting line is made almost not have deformation under tension situation, so that the fingertip of the moving contact being led to due to the abrasion of contact
Change 1: 1 ground of the distance between 2 and pedestal 1 is reflected as the displacement of potentiometric sliding handle 31, and does not affect to break
Other electric properties of road device.Preferably, connecting line 4 can be such as, but not limited to be made up of chinlon litzendraht wire, thus can be low
Become local and realize reliable connection.
Preferably, as shown in figure 1, potentiometer 3 may be mounted in the cavity 11 of pedestal 1, thus so that potentiometer 3
Installation the volume of chopper can't be led to increase, thus being conducive to the miniaturization of chopper.Certainly, potentiometric installation position
Put and be not limited to this, as long as be capable of potentiometric position immobilizing with respect to the position of pedestal.Further preferably
Ground, potentiometer 3 may be mounted in the technique cavity being formed needed for the manufacturing process due to itself of pedestal, thus, can
Dexterously to utilize the technique cavity of of moving contact itself, without design or manufacture one dedicated for the potentiometric sky of installation
Chamber, thus be conducive to the reduction further of the manufacturing cost of chopper.
Preferably, the safe voltage that can be sized between 0-5 volt of input voltage, to be conducive to obtaining from low pressure source
Obtain input voltage and ensure the processing safety of user.
Above-mentioned embodiment may apply in medium-to-high grade and low-grade chopper.For medium-to-high grade chopper,
It often has a control unit, and the Micrologic unit of the such as chopper of the certain model of Schneider product, in this feelings
Under shape, potentiometric input may be electrically connected to the control unit of chopper to obtain a constant input from this control unit
Voltage, and potentiometric outfan equally may be electrically connected to control unit this potentiometric output with real-time monitoring of chopper
Voltage, thus, it is possible to the control unit by means of chopper itself is powered for potentiometer, and measurement result is transmitted directly to control
Unit processed, to be shown in real time and/or to be produced alarm signal etc..With reference to Fig. 2, it is to illustrate in the chopper shown in Fig. 1
Potentiometric enlarged diagram, the sliding handle 31 of potentiometer 3 is connected to the fingertip 2 of moving contact, potentiometer 3 by connecting line 4
Input 32 be connected to chopper control unit voltage output end, the common port 33 of 0 current potential may be coupled to chopper
Control unit earth terminal, thus, be that potentiometer provides input voltage by means of input 32 and common port 33.Potentiometer 3
Outfan 34 may be coupled to chopper control unit voltage input end, thus, outfan 34 and common port 33 are constituted
Potentiometric voltage output end.It should be noted that the potentiometric mode of connection is not limited to this, it depends on potentiometric reality
Model.And for low-grade chopper, it does not often have control unit, in this case, potentiometric input 32, common port
33 and outfan 33 can be drawn by lead, when user need detect chopper contact abrasion situation when, then can be by this
A little terminals are connected to suitable extra device and measure, and observe contact abrasion situation without taking chopper apart.
It is preferable that a threshold value can be set for contact abrasion degree, when Practical Calculation obtains in above-mentioned preferred embodiment
The contact abrasion degree arriving | V0-Vi|/|V0-V1| value when being more than this threshold value, for the chopper with control unit, control
Unit exports an alarm signal it is preferable that alarm signal can be acoustical signal, optical signalling or acoustical signal and optics
The combination of signal, thus, it is possible to remind user to change on most suitable opportunity and/or keep in repair chopper.Preferably, can also be by
Contact abrasion degree value exports the display floater of control unit to be shown in real time, thus, be conducive to user easily with
When check the contact abrasion situation of chopper.And for there is no the chopper of control unit, if user voluntarily counts in the measurements
Calculate contact abrasion degree V0-Vi|/|V0-V1| value, and this value and threshold value are compared, to determine suitable countermeasure, for example
If this value is in close proximity to threshold value, chopper should be changed immediately, and if with a certain distance from this value still has from threshold value, then may be used
Just to change chopper after a certain period of time.
By the above-mentioned description to the chopper with contact of breaker wear monitoring function, in fact, carry simultaneously
Supply the description to monitoring breaker method of contact abrasion degree after break-make several times.With reference to Fig. 3, it is to illustrate basis
The flow chart of the monitoring breaker of the preferred embodiments of the present invention method of contact abrasion degree after break-make several times, according to
The monitoring breaker of a preferred embodiment of the present invention method of contact abrasion degree after break-make several times includes：There is provided one
Potentiometer 3 (step S10)；On the pedestal 1 of the moving contact this potentiometer being fixedly mounted in chopper (step S12)；There is provided
On one connecting line 4, and the fingertip 2 of moving contact one end of this connecting line being fixed on chopper, the other end is fixed on potentiometer 3
Sliding handle 31 on so that fingertip 2 with respect to pedestal 1 motion can via this connecting line 4 drive this sliding handle 3 exist
(step S14) is slided on potentiometer；The input of potentiometer 3 is connected to the control unit of chopper to obtain from this control unit
Obtain a constant input voltage (step S16)；Potentiometric outfan is connected to the control unit (step S18) of chopper；
This potentiometric output voltage (step S20) is measured in the state of the moving contact normally closed of chopper；Calculate chopper warp
Contact abrasion degree after break-make several times, the wherein degree of wear is expressed as | V0-Vi|/|V0-V1|, wherein V0Represent chopper
Contact measure the output voltage obtaining, V first when not yet wearing and tearing1Represent the contact abrasion of this chopper to will use
When the output voltage that obtains of measurement, ViRepresent that chopper measures the output voltage (step S22) obtaining after break-make several times,
Wherein, in this step S22, as above once referred to, V0And V1It is its quilt beforehand through the constant value for example testing acquisition
It is stored in advance in the control unit of chopper, and ViValue be by means of current potential during the contact abrasion of monitoring breaker
The value that the actual measurement of meter obtains, thus can calculate the value representing the total wear extent of dynamic/static contact | V0-Vi|/|V0-V1|.Permissible
Find out, according to this preferred embodiment, do not increase the volume of original chopper and get final product low cost by means of a simple potentiometer
The real-time monitoring to contact abrasion situation is realized on ground.
Obviously, said method can apply in aforesaid chopper, and aforesaid chopper can also be applied to above-mentioned
In method.That is, embodiment with regard to chopper and some features with regard to the embodiment of said method can phases
Mutually combine and/or alternatively applied.
Although on the basis of with reference to each embodiment, the present invention be described in the description and in the accompanying drawings by
Diagram, but it will be understood to those skilled in the art that above-described embodiment only preferred embodiment, certain in embodiment
A little technical characteristics may be not required in that for solving specific technical problem, such that it is able to not or omit these technology
Feature and the formation of the solution of non-influence technique problem or technical scheme；And, the feature of an embodiment, key element and/or
Function can be suitably mutually combined with the feature of other one or more embodiments, key element and/or function, combine or join
Close, unless this combination, combination or cooperation substantially can not be implemented.
Claims (18)
1. a kind of chopper is it is characterised in that this chopper includes：
Moving contact, this moving contact includes pedestal and fingertip, and this fingertip is arranged on described pedestal and can be with respect to described pedestal
Motion；
Potentiometer, this potentiometer is fixedly mounted on described pedestal；And
Connecting line, one end of this connecting line is fixed on described fingertip, and the other end is fixed on described potentiometric sliding handle,
And this connecting line is in maximum tension state all the time, so that described fingertip can via this even with respect to the motion of described pedestal
Wiring drives this sliding handle to slide on described potentiometer to cause the change of potentiometric output voltage,
Wherein, described potentiometer is arranged in the cavity of described pedestal.
2. chopper as claimed in claim 1 is it is characterised in that described connecting line is by the stretch-proof material system being electrically insulated
Become.
3. chopper as claimed in claim 2 is it is characterised in that described connecting line is made up of chinlon litzendraht wire.
4. chopper as claimed in claim 1 is it is characterised in that be connected with a bullet on described potentiometric described sliding handle
Spring is so that described connecting line is in maximum tension state all the time.
5. chopper as claimed in claim 1 is it is characterised in that described chopper also includes a control unit, described current potential
The outfan of meter be electrically connected to the control unit of chopper with real-time monitoring this potentiometric output voltage.
6. the chopper as described in one of claim 1-5 is it is characterised in that described chopper also includes a control unit, institute
State potentiometric input and be electrically connected to the control unit of chopper to obtain a constant input voltage from this control unit.
7. chopper as claimed in claim 6 is it is characterised in that described control unit includes calculating chopper through several times
The computing unit of the contact abrasion degree after break-make, the wherein said degree of wear is expressed as | V0-Vi|/|V0-V1|, wherein V0Represent
The output voltage obtaining, V is measured first when the contact of chopper not yet weares and teares1Represent the contact abrasion of this chopper to will not
The output voltage that when can use, measurement obtains, ViRepresent that chopper measures, after break-make several times, the output voltage obtaining, its
Middle V0And V1It is respectively a constant.
8. chopper as claimed in claim 6 is it is characterised in that the size of described input voltage is between 0-5 volt.
9. the method for a kind of monitoring breaker contact abrasion degree after break-make several times, the method includes：
One potentiometer is provided；
On the pedestal of the moving contact this potentiometer being fixedly mounted in chopper；
There is provided on a connecting line, and the fingertip of moving contact one end of this connecting line being fixed on chopper, the other end is fixed on
On described potentiometric sliding handle, and this connecting line is in maximum tension state all the time, so that described fingertip is with respect to institute
The motion stating pedestal can drive this sliding handle to slide on described potentiometer via this connecting line；
Described potentiometric input is connected to the control unit of chopper to obtain a constant input from this control unit
Voltage；
Described potentiometric outfan is connected to the control unit of chopper；
This potentiometric output voltage is measured in the state of the moving contact normally closed of described chopper；
Calculate contact abrasion degree after break-make several times for the chopper, the wherein said degree of wear is expressed as | V0-Vi|/|
V0-V1|, wherein V0Represent that the contact of chopper measures the output voltage obtaining, V when not yet wearing and tearing first1Represent this chopper
The output voltage that contact abrasion obtains to measurement when will use, ViRepresent that chopper measures after break-make several times
The output voltage arriving,
Wherein, the described step that this potentiometer is fixedly mounted on the pedestal of moving contact is included by described potentiometer regularly
It is arranged in the cavity of described pedestal.
10. method as claimed in claim 9, wherein, V0And V1By carrying out testing obtaining in advance to the chopper of same model
, and be stored in the control unit of chopper as known parameters.
11. methods as claimed in claim 9, also include setting a threshold value for contact abrasion degree, when Practical Calculation obtains
When the value of contact abrasion degree is more than this threshold value, described control unit exports an alarm signal.
12. methods as claimed in claim 11, wherein, described alarm signal is that acoustical signal, optical signalling or sound are believed
Number and optical signalling combination.
13. methods as claimed in claim 9, wherein, methods described is also included the value of calculated contact abrasion degree
The display floater exporting described control unit is to be shown in real time.
14. methods as described in one of claim 9-13, wherein, described connecting line is by the stretch-proof material system being electrically insulated
Become.
15. methods as claimed in claim 14, wherein, described connecting line is made up of chinlon litzendraht wire.
16. methods as claimed in claim 9, wherein, described cavity is due to the manufacture work of the described pedestal of described moving contact
The technique cavity that skill itself is required and is formed.
17. methods as described in one of claim 9-13, wherein, methods described is also included described potentiometric described slip
One spring is connected on handle so that described connecting line is in maximum tension state all the time.
18. methods as described in one of claim 9-13 are it is characterised in that the size of described input voltage is set in 0-5 volt
Between.
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| CN201210119151.XA CN103377860B (en) | 2012-04-20 | 2012-04-20 | Chopper and the method for monitoring breaker contact abrasion degree |
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| CN104882341A (en) * | 2015-06-15 | 2015-09-02 | 常熟开关制造有限公司(原常熟开关厂） | Method for monitoring wear of circuit breaker contact, and circuit breaker |
| CN105070601B (en) * | 2015-09-02 | 2017-07-28 | 常熟开关制造有限公司(原常熟开关厂） | Breaker contact point wear monitoring method and a kind of breaker based on magnetic induction |
| CN107180728B (en) | 2016-03-11 | 2020-08-25 | Abb瑞士股份有限公司 | Solid-sealed polar pole and assembling method thereof |
| US10332698B2 (en) * | 2016-12-21 | 2019-06-25 | Eaton Intelligent Power Limited | System and method for monitoring contact life of a circuit interrupter |
| CN111681920B (en) * | 2020-05-21 | 2023-04-25 | 上海电器科学研究所（集团）有限公司 | Circuit breaker contact system with touch finger spring force monitoring function |
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| CN1679127A (en) * | 2002-09-13 | 2005-10-05 | 西门子公司 | Switch contact arrangement with an erosion display for the switch contacts |
| CN101894692A (en) * | 2009-05-18 | 2010-11-24 | 施耐德电器工业公司 | Evaluation of the integrity of depressed contacts by variation of the rotation of the pole-shaft |
| CN202651004U (en) * | 2012-04-20 | 2013-01-02 | 施耐德电器工业公司 | Circuit breaker |
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| DE69619367T3 (en) * | 1995-05-15 | 2006-02-02 | Cooper Industries, Inc., Houston | CONTROL PROCESS AND DEVICE FOR SWITCH DRIVE |
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| CN1679127A (en) * | 2002-09-13 | 2005-10-05 | 西门子公司 | Switch contact arrangement with an erosion display for the switch contacts |
| CN101894692A (en) * | 2009-05-18 | 2010-11-24 | 施耐德电器工业公司 | Evaluation of the integrity of depressed contacts by variation of the rotation of the pole-shaft |
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