CN209264841U - Scalable probe apparatus for surface potential measurement - Google Patents
Scalable probe apparatus for surface potential measurement Download PDFInfo
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- CN209264841U CN209264841U CN201821690872.5U CN201821690872U CN209264841U CN 209264841 U CN209264841 U CN 209264841U CN 201821690872 U CN201821690872 U CN 201821690872U CN 209264841 U CN209264841 U CN 209264841U
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Abstract
The utility model provides the scalable probe apparatus for being used for surface potential measurement, including shell, visiting core, contact and ground terminal, guide frame is provided on shell, visiting core is slideably positioned on guide frame, shell is connect with contact and ground terminal, visiting core slides against with contact, and visiting core activity is connected on ground terminal.By the way that visiting core is connected on object under test to measure to surface potential, slide visiting core, so that visiting core is retracted on shell, so that surface of the visiting core far from object under test, visiting core influences the surface potential of object under test when movement being avoided to be used for the scalable probe apparatus of surface potential measurement, simultaneously, when visiting core is retracted on shell, visiting core is connected to ground terminal, discharge the residual electric potential in visiting core, when being tested again by visiting core measuring targets, the residual electric potential being avoided that in visiting core influences the surface potential of next position, to further avoid visiting core from influencing the surface potential of object under test.
Description
Technical field
The utility model relates to potential measurement technical fields, more particularly to the scalable probe for surface potential measurement
Device.
Background technique
The measurement of insulator surface current potential belongs to the scope of electrostatic measurement, cannot be measured with traditional electrical instrument.
Currently, the measurement method of surface potential mainly includes dust figure method, measuring method and electrostatic based on bubble Ke Ersi effect
Probe method.Dust figure method was initially proposed that principle is the colored solid using certain electrifications, such as by Li Xitengbeige in 1778
Positively charged red Pb3O4, the S of electronegative white yellow, the charge generation adsorption effect of meeting and insulator surface, such as it is negative
Charge can adsorb positively charged Pb3O4, positive charge can adsorb electronegative S.When these special solid powders are sprayed at medium
When surface, the polarities of potentials and current potential of dielectric surface can be judged according to the distribution of color of these solid powders of dielectric surface
Distribution.Its advantage is that it is convenient, intuitive, the disadvantage is that being unable to quantitatively characterizing surface potential, and during spraying dust, may change
The Potential distribution of dielectric surface.Ke Ersi effect measuring method, that is, linear electro-optic effect method is steeped, for not having in symmetrical
For the crystal of the heart, when at it in the electric field, the variation of refractive index is proportional with added electric field strength, i.e., in electricity
Field is obviously rendered when less strong, thus can be reflected by the variation of crystal refractive index under measurement electric field action
The variation of electric field, but the method is only applicable to transparent membrane, is not appropriate for the disc insulator surface of solids.
Electrostatic probe method is to use wide method in current surface potential measurement field in the world at present.Electrostatic probe
Mainly it is made of induced inside conductor, internal support insulator and external ground shield.Insulator surface current potential is surveyed
When amount, by probe vertical in testing medium surface and constant distance, insulator surface current potential can excite induction on sensor conductor
Voltage can measure output induced voltage.When the regularity of distribution and influence factor for only investigating surface potential, to different items
When experimental result under part carries out lateral comparison, insulator surface current potential is calculated using traditional lineal scale method.
For solid insulation surface, common measurement method is electrostatic capacitance probe method, but due to measurement distance
Limitation, the conventional scalable probe apparatus for surface potential measurement are closer apart from solid insulation surface in moving process
When, there can be large effect to surface potential, influence the accuracy of measurement data.
Utility model content
Based on this, it is necessary to provide a kind of scalable probe apparatus for surface potential measurement.
A kind of scalable probe apparatus for surface potential measurement, including shell, visiting core, contact and ground terminal, institute
State and be provided with guide frame on shell, the visiting core is slideably positioned on the guide frame, the shell and the contact with
And the ground terminal connection, the visiting core slides against with the contact, and the visiting core activity is connected to the ground terminal
On son.
The scalable probe apparatus for surface potential measurement in above-described embodiment, by by visiting core be connected to
It surveys on object and is measured with the surface potential on measuring targets, multiple points of measuring targets surface transverse direction measure
When, visiting core is slided after having measured the surface potential of current location, so that visiting core is retracted on shell, so that visiting core is far from determinand
The surface of body, visiting core influences the surface electricity of object under test when movement being avoided to be used for the scalable probe apparatus of surface potential measurement
Position, meanwhile, when visiting core is retracted on shell, visiting core is connected to the ground terminal, the residual electric potential in visiting core is discharged, when again
When being tested by visiting core measuring targets, the residual electric potential being avoided that in visiting core influences the surface potential of next position, from
And visiting core is further avoided to influence the surface potential of object under test, promote the scalable probe apparatus for being used for surface potential measurement
Measure the accuracy of surface potential.
The contact offers limit channels in one of the embodiments, and the visiting core is arranged in the limit channels
It is interior, and abutted with the side walls of the limit channels.
It in one of the embodiments, further include insulated support, the insulated support is set on the shell, institute
Guide frame is stated to be set on the insulated support.
The guide frame is the sliding channel for being opened in the insulated support in one of the embodiments, described
Visiting core is arranged in the sliding channel, and is abutted with the side walls of the sliding channel.
The outer surface protrusion of the insulated support is provided with convex block in one of the embodiments,.
It in one of the embodiments, further include elastic component, one end of the elastic component is connect with the shell, the bullet
The other end of property part is connect with the visiting core.
The elastic component is spring in one of the embodiments,.
It in one of the embodiments, further include the first electromagnet and magnetic part, first electromagnet and the magnetism
One of them in part is set on the shell, another is set in the visiting core, first electromagnet and the magnetic
Property part, which is mutually attracted, slides the visiting core along the guide frame.
It in one of the embodiments, further include shielding case, the shielding case is connect with the shell, and the shielding case is opened
Equipped with shielding channel, the visiting core is at least partly arranged in the shielding channel.
It in one of the embodiments, further include signal output module, the contact is electrically connected with the signal output module
It connects.
Detailed description of the invention
Fig. 1 is the section knot under a state of the scalable probe apparatus for surface potential measurement of one embodiment
Structure schematic diagram；
Fig. 2 is the section under another state of the scalable probe apparatus for surface potential measurement of one embodiment
Structural schematic diagram.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
In one of the embodiments, as depicted in figs. 1 and 2, a kind of scalable probe for surface potential measurement fills
10, including shell 100, visiting core 200, contact 300 and ground terminal 400 are set, is provided with guide frame on the shell 100, institute
It states visiting core 200 to be slideably positioned on the guide frame, the shell 100 and the contact 300 and the ground terminal 400
Connection, the visiting core 200 slides against with the contact 300, and 200 activity of the visiting core is connected to the ground terminal 400
On.In the present embodiment, the visiting core 200 is persistently slid against during flexible with the contact 300, that is to say, that institute
Visiting core 200 is stated along the guide frame sliding process, the visiting core 200 always with 300 sliding contact of contact, the touching
First 300 with signal output module 310 for being electrically connected, and for making visiting core 200 and signal output module 310 remain and be electrically connected
State is connect, so that the surface potential that visiting core 200 measures can constantly be conducted to signal output module 310.In the present embodiment, institute
It states visiting core 200 to slide along the guide frame, and the visiting core 200 is set as sliding at least partly protrudes from the shell 100
It sets, so that the protrusion part of visiting core 200 is contacted with object under test, makes to detect more convenient.
In the present embodiment, the inside of shell offers installation cavity, and the guide frame is set in installation cavity, installation cavity tool
There is a through-hole, visiting core is movably set in installation cavity, and visiting core activity is inserted in the through-hole, and visiting core at least partly protrudes from logical
Hole, the contact are set in installation cavity, and ground terminal is set to the side wall of the one end of installation cavity far from through-hole, in this way, when visiting
When core is slided along the guide frame in installation cavity, visiting core by towards the slide outside of through-hole so that one end visiting core stretch out it is logical
Outside hole, after visiting core counter motion, the other end of visiting core is connected to ground terminal.
Referring to Fig. 1, the scalable probe apparatus 10 for surface potential measurement in above-described embodiment, pass through by
Visiting core 200 is connected on object under test and is measured with the surface potential on measuring targets, measuring targets surface transverse direction
When multiple points measure, visiting core 200 is slided after having measured the surface potential of current location, so that visiting core 200 is retracted to shell
On 100, so that surface of the visiting core 200 far from object under test, avoids the mobile scalable probe apparatus for being used for surface potential measurement
Visiting core 200 influences the surface potential of object under test when 10, meanwhile, referring to Fig. 2, being visited when visiting core 200 is retracted in shell 100
Core 200 is connected to the ground terminal 400, discharges the residual electric potential in visiting core 200, when again by visiting core 200 to determinand
When body is tested, the residual electric potential being avoided that in visiting core 200 influences the surface potential of next position, to further avoid
Visiting core 200 influences the surface potential of object under test, is promoted and measures surface for the scalable probe apparatus 10 of surface potential measurement
The accuracy of current potential.
As depicted in figs. 1 and 2, in one embodiment, the shell 100 offers installation cavity 101, the installation cavity
101 have a through-hole 102, and 200 activity of visiting core wears the through-hole 102, and the guide frame is set to the installation cavity
101 side wall, the ground terminal 400 are set to the side wall of the installation cavity 101, and the part of the visiting core 200 is set to institute
It states in installation cavity 101, and the visiting core 200 is at least partly movably set in outside the installation cavity 101, that is to say, that described
At least partly activity of visiting core 200 protrudes from the outside of the shell 100.
The material of the visiting core is red copper in one of the embodiments, and red copper has good electric conductivity.One implementation
In example, the shape of the visiting core be it is cylindric so that charge uniform conductive everywhere and distribution in visiting core, so that test result is more
It is accurate.In one embodiment, the diameter of section of the visiting core is 1mm, total length 60mm.
The ground terminal is made of brass in one of the embodiments, is placed in the side of visiting core, with the visiting core
Wherein one end is correspondingly arranged, and the ground terminal is also connected with connecting wires, and is connected wires for being grounded, when visiting core withdraws shell
When, visiting core and ground terminal contact play the role of discharging residual electric potential.Brass under the premise of taking into account electric conductivity, have than
The better hardness of red copper, because visiting core needs repeatedly touching ground terminal in measurement process, ground terminal made of brass has good
Good hardness reduces contact terminal and damages during abutting, can extend the service life of ground terminal.
To slide against contact 300 more stably with the visiting core 200, as depicted in figs. 1 and 2, one wherein
In embodiment, the contact 300 offers limit channels 301, and the visiting core 200 is arranged in the limit channels 301, and with
The side walls of the limit channels 301 abut.By the way that visiting core 200 to be threaded through in limit channels 301, visiting core 200 was slided
To be slided along limit channels 301 in journey, and avoid 200 deviation of visiting core so that visiting core 200 more stably with the contact
300 slide against, and play the role of moving back and forth visiting core 200 simultaneously and limit.
It is as depicted in figs. 1 and 2, described in one of the embodiments, to keep the measurement data of surface potential more accurate
Scalable probe apparatus 10 for surface potential measurement further includes insulated support 800, and the insulated support 800 is set to
On the shell 100, the insulated support 800 is placed between shell 100 and visiting core 200, to visiting core 200 play support with absolutely
The effect of edge, the guide frame are set on the insulated support 800.The insulated support 800 is shell and visiting core
Insulating effect is provided, can be reduced charge leakage, to enable measurement data more accurate.
Further to avoid charge leakage, as depicted in figs. 1 and 2, the guide frame in one of the embodiments,
For the sliding channel 801 for being opened in the insulated support 800, the visiting core 200 is arranged in the sliding channel 801, and
It is abutted with the side walls of the sliding channel 801.On the one hand, sliding channel 801 plays guiding role to visiting core 200, so that
Visiting core 200 is slided along sliding channel 801, and on the other hand, sliding channel 801 is opened on insulated support 800, so that visiting core
200 are placed in insulated support 800, so that insulated support 800 is further reduced charge leakage, to enable measurement data more
Add accurate.
Further to reduce charge leakage, as depicted in figs. 1 and 2, the insulating supporting in one of the embodiments,
The outer surface protrusion of part 800 is provided with convex block 810.The convex block 810 increases 800 outer surface of insulated support
Creepage distance, so that charge leakage is further reduced, to enable measurement data more accurate.In one embodiment, described convex
The quantity of block 810 is multiple, to further increase creepage distance, reduces charge leakage.In one embodiment, each described convex
Block 810 is arranged along the radial direction protrusion of the insulated support 800.In one embodiment, each convex block 810 is along described
The axially spaced-apart of insulated support 800 is arranged, that is to say, that the insulated support 800 is in umbrella skirt construction, climbs electricity to increase
Distance reduces charge leakage.
In one embodiment, the material of the insulated support 800 is rubber.In one embodiment, the insulating supporting
The material of part 800 is plastics.
It is resetted for convenience of the visiting core 200, it is as depicted in figs. 1 and 2, described in one of the embodiments, to be used for surface
The scalable probe apparatus 10 of potential measurement further includes elastic component 500, and one end of the elastic component 500 and the shell 100 connect
It connects, the other end of the elastic component 500 is connect with the visiting core 200.In the present embodiment, the visiting core 200 is retracted to shell
When 100, the elastic potential energy of the elastic component 500 increases, when applying active force not in visiting core 200,500 elastic potential of elastic component
It can decline, and visiting core 200 is pushed to protrude from 100 outside of shell, so that visiting core 200 resets.
The elastic component is spring in one of the embodiments, and when visiting core is moved to ground terminal, spring is pressed
Contracting, spring obtain elastic potential energy, and then, when visiting core is not by other external force, spring does work to visiting core, by elasticity by visiting core from logical
Hole is released, so that visiting core is stretched out.In one embodiment, the elastic component is elastic slice.
To drive the visiting core 200 to slide on guide frame, as depicted in figs. 1 and 2, in one of the embodiments,
The scalable probe apparatus 10 for surface potential measurement further includes the first electromagnet 610 and magnetic part 620, and described first
One of them in electromagnet 610 and the magnetic part 620 is set on the shell 100, another is set to the visiting core
On 200, first electromagnet 610 is mutually attracted with the magnetic part 620 keeps the visiting core 200 sliding along the guide frame
It is dynamic.In the present embodiment, first electromagnet 610 in the energized state, attracts the magnetic part 620, so that visiting core 200
It is slided on guide frame.
In one of the embodiments, as depicted in figs. 1 and 2, first electromagnet 610 is set to the shell 100
On, the magnetic part 620 is set in the visiting core 200, and first electromagnet 610 in the energized state, attracts the magnetic
Property part 620, and the visiting core 200 is driven to slide along the guide frame, so that visiting core 200 stores 100 inside of shell, together
Shi Suoshu elastic component 500 obtains elastic potential energy, and the visiting core 200 is connected to the ground terminal 400, discharges in visiting core 200
Charge.Then, first electromagnet 610 is powered off, 500 elastic potential energy of the elastic component decline, and drive the visiting core 200
It is slided along the guide frame, and the visiting core 200 is made to protrude from the outside of the shell 100, simultaneously switch off the visiting core
200 with the connection of the ground terminal 400, measured next time with the surface potential of measuring targets.In the present embodiment, institute
It states the first electromagnet 610 to be set on the side wall of the installation cavity 101, the side wall of the installation cavity 101 offers energization hole (figure
Do not show), for wearing electric wire (not shown), one end of the electric wire is electrically connected with first electromagnet 610 in the energization hole,
The other end of the electric wire with electromagnetism group controller 900 for connecting, to pass through electromagnetism group controller 900 to the first electromagnet
610 are powered.In the present embodiment, the first electromagnet 610 and magnetic part 620 all have lesser volume, can be mounted on compact sky
Between in, the volume for increasing the scalable probe apparatus 10 for surface potential measurement is avoided, so that for surface potential measurement
Scalable probe apparatus 10 keeps light.
As depicted in figs. 1 and 2, in one embodiment, insulation is provided between the magnetic part 620 and the visiting core 200
Body 820, the insulator 820 are used for the charge-conduction completely cut off between the visiting core 200 and the magnetic part 620, avoid charge
It is conducted between the visiting core 200 and the magnetic part 620, so that the surface on the current potential and object under test in visiting core 200
Current potential is consistent, so that measurement result is more accurate.In the present embodiment, the first end of the elastic component 500 and first electromagnetism
Iron 610 connects, and the second end of the elastic component 500 connect with the magnetic part 620, i.e., the described elastic component 500 passes through described the
One electromagnet 610 is connect with the shell 100, and the elastic component 500 passes through the magnetic part 620 and the insulator 820
It is connect with the visiting core 200.
In another embodiment, the magnetic part is set on the shell, and first electromagnet is set to the spy
On core.In the present embodiment, be provided with insulator between the visiting core and first electromagnet so that the current potential in visiting core with
The surface potential of object under test is consistent, and keeps measurement result accurate.
For the magnetic function for realizing the magnetic part, the magnetic part is iron in one of the embodiments,.Wherein one
In a embodiment, the magnetic part is cobalt.The magnetic part is nickel in one of the embodiments,.Iron-cobalt-nickel has magnetism, makes
Magnetic part is made with iron or cobalt or nickel, the first electromagnet under energized state is enabled to attract the magnetic part.
For the magnetic function for realizing the magnetic part, the magnetic part is ferroalloy in one of the embodiments,.At it
In middle one embodiment, the magnetic part is cobalt alloy.The magnetic part is nickel alloy in one of the embodiments,.Iron cobalt
Nickel has magnetism, and magnetic part is made using the alloy of these metals, the first electromagnet under energized state is attracted described
Magnetic part.
The magnetic part is lanthanum alloy in one of the embodiments,.Lanthanum alloy has magnetism, by lanthanum alloy system
At magnetic part, the first electromagnet under energized state is enabled to attract the magnetic part.
To make magnetic part described in first electromagnetic actuation, the first electromagnet packet in one of the embodiments,
The first iron core and first coil are included, the first coil is arranged along the outer surface spiral of first iron core, that is to say, that institute
It states first coil to be sheathed on first iron core, after the first coil is powered, first iron core is by the first coil
Magnetic field magnetization, first iron core after magnetization has magnetism, is attracted the magnetic part with this.In the present embodiment, the electricity
Line is electrically connected with the first coil.
In one embodiment, the scalable probe apparatus for surface potential measurement includes the second electromagnet and the
Three electromagnet, second electromagnet are set on the shell, and the third electromagnet is set in the visiting core, and described
Two electromagnet and the third electromagnet, which are mutually attracted, slides the visiting core along the guide frame.It is described in the present embodiment
Second electromagnet is separately energized with the third electromagnet, so that second electromagnet is mutually inhaled with the third electromagnet
It closes, so that the visiting core is slided along the guide frame, so that visiting core stores the case inside, while the elastic component is obtained
Elastic potential energy, the visiting core are connected to the ground terminal, discharge the charge in visiting core.Then, make second electromagnet with
The third electromagnet power-off, the elastic component elastic potential energy decline, and the visiting core is driven to slide along the guide frame, and
So that the visiting core protrudes from the outside of the shell, the connection of the visiting core Yu the ground terminal is simultaneously switched off, to treat
The surface potential for surveying object is measured next time.
For the magnetic function for realizing second electromagnet and third electromagnet, in one of the embodiments, described the
Two electromagnet include the second iron core and the second coil, and second coil is arranged along the outer surface spiral of second iron core,
After second coil is powered, the second iron core is magnetized by the magnetic field of the second coil, and the second iron core after magnetization has magnetism, the third
Electromagnet includes third iron core and tertiary coil, and the tertiary coil is arranged along the outer surface spiral of the third iron core, the
After three-winding is powered, third iron core is magnetized by the magnetic field of tertiary coil, and the third iron core after magnetization has magnetism, the present embodiment
In, second coil is identical as the current direction of the tertiary coil and around on the contrary, when second electromagnet and described
When third electromagnet is respectively at energized state, second electromagnet and the third electromagnet are mutually attracted.Another implementation
In example, second coil and the current direction of the tertiary coil are on the contrary and around to identical, when second electromagnet and institute
When stating third electromagnet and being respectively at energized state, second electromagnet and the third electromagnet are mutually attracted.
To make the measurement result of the scalable probe apparatus 10 for surface potential measurement more accurate, such as Fig. 1
With shown in Fig. 2, the scalable probe apparatus 10 for surface potential measurement further includes shielding in one of the embodiments,
Cover 700, the shielding case 700 is connect with the shell 100, and the shielding case 700 offers shielding channel, the visiting core 200
It is at least partly arranged in the shielding channel, shielding channel is connected to installation cavity.The shielding case 700 can play visiting core 200
To the effect of electrostatic screen, spatial electromagnetic interference is eliminated, to avoid interfering measurement result, so that measurement is more quasi-
Really.In the present embodiment, the shielding case 700 protrudes from the outer surface setting of described 100 one end of shell around the visiting core 200,
The i.e. described shielding case 700 is arranged around one end that the visiting core 200 is contacted with object under test.To play electrostatic screen to visiting core 200
Effect, eliminate spatial electromagnetic interference, keep measurement result more acurrate.
To make shield effectiveness more preferable, in one embodiment, the material of the shielding case is aluminium.In one embodiment
In, the material of the shielding case is aluminium alloy, and aluminium and aluminium alloy have outstanding shielding properties.
To export the surface potential data that visiting core 200 measures, as depicted in figs. 1 and 2, in one of the embodiments,
The scalable probe apparatus 10 for surface potential measurement further includes signal output module 310, the contact 300 with it is described
Signal output module 310 is electrically connected.In the present embodiment, delivery outlet, the delivery outlet and the peace are offered on the shell 100
It behave affectedly 101 connections, the signal output module 310 is arranged in the delivery outlet, and the contact 300 is set to the installation cavity
In 101, one end of the signal output module 310 is connect with the contact 300 being located in the installation cavity 101, the letter
The other end of number output module 310 is set to outside the installation cavity 101, and the signal output module 310 is far from the contact 300
One end for being electrically connected with potential test instrument ontology, surface potential data are reflected on potential test instrument ontology.
In one of the embodiments, the signal output module include SMA interface (Sub-Miniature-A, it is extra small
Type-A type), the SMA interface with potential test instrument ontology for connecting.
To further prevent the charge in the visiting core to influence the surface potential of object under test, in one embodiment,
The scalable probe apparatus for surface potential measurement further includes plectrum, and one end of the plectrum and the shell connect around property
It connects, the other end of the plectrum is free end, and the plectrum removable cover is set on the through-hole.In the present embodiment, the plectrum
Quantity be it is multiple, each plectrum be arranged around the through-hole, and each plectrum removable cover is on the through-hole.Specifically,
The plectrum has insulating properties, that is to say, that the plectrum is insulation plectrum, and the plectrum has flexibility, that is to say, that institute
Stating plectrum is insulation flexible plectrum, each plectrum activity closing through-hole, in the present embodiment, when the visiting core protrudes from institute
When stating shell, the free end of the plectrum is connected to the outer surface of the visiting core, and therefore, visiting core can successfully measuring targets
It measures, when the visiting core is retracted in installation cavity, the plectrum removable cover is set to the through-hole, and closes described logical
Hole, due to plectrum have insulation performance, the charge leakage of visiting core can be prevented to object under test surface, thus avoid influence to
The surface potential of object is surveyed, enables measurement more accurate.Specifically, the section of each plectrum is triangular in shape, and each described group
Two corners of piece are connect with the shell, and another corner is free end, when each plectrum is covered on the through-hole, respectively
The plectrum is spliced to form polygon, is covered on the through-hole, which can guarantee that the visiting core successfully passes through described dial
Piece, i.e., the described visiting core can successfully push the free end of each plectrum, so that shell setting is protruded from, when visiting core is retracted to peace
When behaveing affectedly, the free end of each plectrum is close to each other, so that each plectrum is spliced to form polygon, is covered on the through-hole
On, prevent charge leakage.
In one embodiment, the material of the plectrum is rubber.In one embodiment, the material of the plectrum is organosilicon
Rubber.
It is noted that the scalable probe apparatus for surface potential measurement can be referred to as scalable probe
Device can also be referred to as probe apparatus.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of scalable probe apparatus for surface potential measurement, which is characterized in that including shell, visiting core, contact and connect
Ground terminal is provided with guide frame on the shell, and the visiting core is slideably positioned on the guide frame, the shell and institute
Contact and ground terminal connection are stated, the visiting core slides against with the contact, and the visiting core activity is connected to institute
It states on ground terminal.
2. the scalable probe apparatus according to claim 1 for surface potential measurement, which is characterized in that the contact
Limit channels are offered, the visiting core is arranged in the limit channels, and is abutted with the side walls of the limit channels.
3. the scalable probe apparatus according to claim 1 for surface potential measurement, which is characterized in that further include exhausted
Edge supporting element, the insulated support are set on the shell, and the guide frame is set on the insulated support.
4. the scalable probe apparatus according to claim 3 for surface potential measurement, which is characterized in that the guiding
Structure is the sliding channel for being opened in the insulated support, and the visiting core is arranged in the sliding channel, and with the cunning
The side walls in dynamic channel abut.
5. the scalable probe apparatus according to claim 4 for surface potential measurement, which is characterized in that the insulation
The outer surface protrusion of supporting element is provided with convex block.
6. the scalable probe apparatus according to claim 1 for surface potential measurement, which is characterized in that further include bullet
Property part, one end of the elastic component are connect with the shell, and the other end of the elastic component is connect with the visiting core.
7. the scalable probe apparatus according to claim 6 for surface potential measurement, which is characterized in that the elasticity
Part is spring.
8. being used for the scalable probe apparatus of surface potential measurement described in -7 any one according to claim 1, feature exists
In further including the first electromagnet and magnetic part, one of them in first electromagnet and the magnetic part is set to described
On shell, another is set in the visiting core, and first electromagnet is mutually attracted with the magnetic part makes the visiting core edge
The guide frame sliding.
9. being used for the scalable probe apparatus of surface potential measurement described in -7 any one according to claim 1, feature exists
In, further include shielding case, the shielding case is connect with the shell, the shielding case offer shielding channel, the visiting core is extremely
Small part is arranged in the shielding channel.
10. being used for the scalable probe apparatus of surface potential measurement described in -7 any one according to claim 1, feature exists
In further including signal output module, the contact is electrically connected with the signal output module.
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| CN109239475A (en) * | 2018-10-18 | 2019-01-18 | 广州供电局有限公司 | Scalable probe apparatus for surface potential measurement |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109239475A (en) * | 2018-10-18 | 2019-01-18 | 广州供电局有限公司 | Scalable probe apparatus for surface potential measurement |
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Effective date of registration: 20200930 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |