CN206725705U - Electric field-sensitive type insulating materials static properties test device and system - Google Patents
Electric field-sensitive type insulating materials static properties test device and system Download PDFInfo
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- CN206725705U CN206725705U CN201720368119.3U CN201720368119U CN206725705U CN 206725705 U CN206725705 U CN 206725705U CN 201720368119 U CN201720368119 U CN 201720368119U CN 206725705 U CN206725705 U CN 206725705U
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Abstract
The utility model discloses a kind of electric field-sensitive type insulating materials static properties test device and system, it is related to method test or the method and technology field of analysis of material of electricity consumption, electrochemistry or magnetic.The test system includes electric field-sensitive type insulating materials static properties test device, in addition to high-voltage DC power supply, current-limiting resistance, the first Pneumatic time-delay high-voltage switch gear K1, high pressure noninductive capacitor, the second Pneumatic time-delay high-voltage switch gear K2, sampling resistor, oscillograph, the 3rd Pneumatic time-delay high-voltage switch gear K3 and discharge resistance.The system avoids damage of the change of tested insulating material properties to power supply using the design of capacitor charging/discharging, can play the defencive function to power supply.Rearmounted discharge resistance in test system can fully release capacitor remaining capacity at the end of test, ensure safe operation.
Description
Technical field
Method test or the method and technology field of analysis of material of electricity consumption, electrochemistry or magnetic are the utility model is related to, especially
It is related to a kind of electric field-sensitive type insulating materials static properties test device and system.
Background technology
Preferable electric field-sensitive section bar material is insulating materials in the case of usually low field intensity, when material is by outside highfield
When excitation, i.e., when external electrical field dramatically increases and exceedes certain critical field strength suddenly, due to the distinctive electrochemistry of material
With energy-structure feature, can perceive external electromagnetic environment change and can quick regulation its electromagnetic performance, can be in the micro-nano second
Insulation/conductive phase transition phenomena is occurred immediately upon in time, electrical conductivity can lift 102~105The order of magnitude, make usually for insulator
Material rapidly goes to highly conductive metalloid material, and after the disappearance of external drive high field, material returns to reset condition.And base
It can undergo phase transition in the material of this working mechanism development, can not know without corresponding test, and this kind of material
Itself belong to new material, how to test it does not have phase also in insulator/conductor phase transformation of highfield and the change limitation of resistivity
Close report.
Utility model content
Technical problem to be solved in the utility model, which is to provide one kind, can test electric field-sensitive type material phase transformation and phase
The electric field-sensitive type insulating materials static properties test device of performance indications after change.
In order to solve the above technical problems, technical solution adopted in the utility model is：A kind of electric field-sensitive type insulation material
Expect static properties test device, it is characterised in that：Including insulation transparent casing, the bottom plate in the casing is provided with insulating blanked clamper
Tool, the dielectric holder include left movable block and right movable block, lead between the left movable block and right movable block and the bottom plate
Cross slide rail or chute is mutually slidably connected, one is respectively equipped with the left movable block and relative two faces of right movable block
Electrode is tested, each electrode of testing is electrically connected with a high-voltage insulating wire, and high-voltage insulating wire is extended to outside the casing
Form terminals.
Further technical scheme is：Described device also include controller outside the casing, insulating gas gas cylinder and
Temperature control panel and Temperature Humidity Sensor and temp.-adjustable fan in the casing, the outlet side of the gas cylinder are connected with high pressure gas
Pipe, the gas outlet of the high-pressure air pipe is located in the casing, and the high-pressure air pipe is provided with normally closed solenoid valve, the electromagnetism
Valve is controlled to be formed on the controller, for being opened or closed under the control of the controller；The Temperature Humidity Sensor is located at
On the inwall of the casing, it is connected with the signal input part of the controller, for gathering the humiture information in the casing；
The temp.-adjustable fan is located on the inwall of the casing, is controlled by the controller, for right under the control of the controller
Temperature and humidity in the casing is adjusted；The temperature control panel is located at the downside of the bottom plate, is controlled by the controller,
For heating under the control of the controller to the casing, the temperature and humidity in the casing is adjusted
Section.
Further technical scheme is：The controller includes microprocessor and human-computer interaction module, described man-machine
Interactive module is bi-directionally connected with the microprocessor, for inputting the data of control command and display output.
Further technical scheme is：Described device also includes limiter, and the limiter includes caging bolt and limit
Position nut, one end of the caging bolt are threadedly coupled after sequentially passing through left and right movable block with the stop nut, pass through regulation
Position of the stop nut on the caging bolt, adjusts distance between left and right movable block.
Further technical scheme is：The test electrode is disk electrode, and the disk electrode includes horizontal connection
Portion and the disk electrode portion being vertically arranged, the one end in the horizontal connection portion are fixedly connected with the movable block, and the level is even
The other end of socket part is fixedly connected with the disk electrode portion, and the disk electrode portion be located at the movable block lateral surface it
Outside, when testing electric field-sensitive type insulating materials, the insulating materials is in be vertically arranged, and the insulating materials is by two
Block disk electrode portion clamps, and is used to produce vertical and insulating materials electric field between the disk electrode.
Further technical scheme is：A diameter of 30mm-40mm in the disk electrode portion, thickness 4mm-8mm.
Further technical scheme is：The test electrode includes strip electrode group, and the strip electrode group is including being in
The upper strip electrode of setting symmetrical above and below and lower strip electrode, in strip electrode group described in every group, lower strip electrode and the work
Motion block is fixedly connected, and is installed between upper strip electrode and lower strip electrode by means of screw, when to electric field-sensitive type insulating materials
When being tested, the insulating materials is in being horizontally disposed with, and the left and right sides of the insulating materials is respectively by two groups of strip electrode groups
It is clamped, it is used to produce the electric field parallel to the insulating materials between the strip electrode group.
Further technical scheme is：The length of the upper and lower strip electrode is（40mm-60mm）×（8mm-
12mm）×（8mm-12mm）；And in strip electrode group described in every group above between strip electrode and lower strip electrode by between two
Every setting mode connects for screw to together, the distance between two screws are 20mm-30mm.
The invention also discloses a kind of electric field-sensitive type insulating materials static properties test system, it is characterised in that：
Including described electric field-sensitive type insulating materials static properties test device, in addition to high-voltage DC power supply, current-limiting resistance, first
Pneumatic time-delay high-voltage switch gear K1, high pressure noninductive capacitor, the second Pneumatic time-delay high-voltage switch gear K2, sampling resistor, oscillograph, the 3rd
Pneumatic time-delay high-voltage switch gear K3 and discharge resistance, the positive pole of the high-voltage DC power supply pneumatically prolong through current-limiting resistance, first successively
When high-voltage switch gear K1 and the capacitor after be connected with the negative pole of the power supply, and the power supply negative pole ground connection；Described
One end that the two Pneumatic time-delay high-voltage switch gear K2 termination capacitor and the first Pneumatic time-delay high-voltage switch gear K1 are electrically connected,
The terminals of the other end of the second Pneumatic time-delay high-voltage switch gear K2 and a high-voltage insulating wire in the test device connect
Connect, the terminals of another high-voltage insulating wire electrically connect with one end of the sampling resistor in the test device, described to adopt
The other end ground connection of sample resistance, the oscillograph are in parallel with the sampling resistor；The 3rd Pneumatic time-delay high-voltage switch gear K3's
One end that the one termination capacitor and the first Pneumatic time-delay high-voltage switch gear K1 are electrically connected, the 3rd Pneumatic time-delay height press off
The other end for closing K3 is grounded through the discharge resistance.
Further technical scheme is：The high-voltage switch gear K1-K3 is gate-controlled switch, the high-voltage switch gear K1-K3's
Open or close is controlled by controller.
It is using beneficial effect caused by above-mentioned technical proposal：The system is kept away using the design of capacitor charging/discharging
Exempt from damage of the change of tested insulating material properties to power supply, the defencive function to power supply can be played.It is rearmounted in test system
Discharge resistance can fully release capacitor remaining capacity at the end of test, ensure safe operation.Pressed off from Pneumatic time-delay height
Close, can remote control, and can ensure near-end safe operation, while also as far as possible reduce corona influence.The system is applied to big
The characteristic test of the adaptive material of size, it is possible to provide High Voltage field excitation, insulate environment, meets Larger Dynamic scope measurement demand.
Insulating gas is full of in test device, ensures to occur when tested insulating materials both ends obtain strong electric field environment again
Electric discharge phenomena, while can also prevent the corona of Pneumatic time-delay high-voltage switch gear from influenceing.Temperature control panel, temp.-adjustable fan, Temperature Humidity Sensor
And controller can ensure that the temperature in the casing is uniformly unified, inhibitory action is played to the temperature change of test environment.
Two kinds of electrodes test different field strength directions respectively（It is horizontal or vertical）When material phase transition performance, it is easy to use.
Electrode can provide uniform electric field after being applied in voltage, by limiter adjust two test electrodes between away from
From be carried in test electrode on voltage, adjust measured material residing for field strength size, oscillograph be used as display device, facilitate
Test and observation.Therefore, the test device has that simple in construction, easy to operate, test result is reproducible and stability is high
The advantages of.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of test device described in the utility model embodiment；
Fig. 2 is strip electrode group and the structural representation of left and right movable block in test device described in the utility model embodiment
Figure；
Fig. 3 is the structural representation of test system described in the utility model embodiment；
Fig. 4 is the electrical schematic diagram of the part of detecting in test system described in the utility model embodiment；
Fig. 5 is the test flow chart of test system described in the utility model embodiment；
Wherein：1st, insulation transparent casing；2nd, bottom plate；3rd, left movable block；4th, right movable block；5th, slide rail or chute；6th, high pressure
Insulated conductor；7th, insulating gas gas cylinder；8th, temperature control panel；9th, Temperature Humidity Sensor；10th, temp.-adjustable fan；11st, high-pressure air pipe；12nd, limit
Position bolt；13rd, disk electrode；14th, horizontal connection portion；15th, disk electrode portion；16th, electric field-sensitive type insulating materials；17th, upper bar
Shape electrode；18th, lower strip electrode；19th, screw；20th, high-voltage DC power supply；21st, current-limiting resistance；22nd, the first Pneumatic time-delay high pressure
Switch K1；23rd, high pressure noninductive capacitor；24th, the second Pneumatic time-delay high-voltage switch gear K2；25th, sampling resistor；26th, oscillograph；27、
3rd Pneumatic time-delay high-voltage switch gear K3；28th, discharge resistance；29th, sealing-plug.
Embodiment
With reference to the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Many details are elaborated in the following description in order to fully understand the utility model, but this practicality is new
Type can also be different from other manner described here using other to be implemented, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case of new intension, therefore the utility model is not limited by following public specific embodiment.
As shown in figure 1, the utility model embodiment discloses a kind of electric field-sensitive type insulating materials static properties test dress
Put, including insulation transparent casing 1, the casing can be the transparent cabinet of glass material, or organic material it is transparent
Casing, any in specifically used case above, those skilled in the art can be selected according to being actually needed.The case
Internal bottom plate 2 is provided with dielectric holder, and the dielectric holder includes left movable block 3 and right movable block 4, the left movable block 3
Mutually it is slidably connected by slide rail or chute 5 between right movable block 4 and the bottom plate 2.
When being provided that chute on the bottom plate 2, the bottom surface of the left movable block 3 and right movable block 4 is provided with and institute
The inverted T shaped projection that chute is adapted is stated, the installation left movable block 3 and right movable block 4 for convenience, the both ends of the chute
It is settable to protrude out into mouth, conveniently the projection is inserted into the chute, and the inner side for protruding out into mouth can be set
Stop block, it can prevent the movable block from being skidded off after installing from the mouth that protrudes out into.
When being provided that slide rail on the bottom plate 2, the cross section of the slide rail can be it is T-shaped, now, the left activity
The bottom surface of block 3 and right movable block 4 is provided with the chute being adapted with the slide rail, and the chute runs through the movable block, described
The both ends of slide rail set stop block, and when the movable block is arranged on the slide rail, stop block can effectively prevent the work
Motion block is deviate from from the slide rail.Two kinds are only listed above can be achieved what is be slidably matched between the sliding shoe and the bottom plate
Concrete structure is, it is necessary to which explanation, also a variety of structures can realize above-mentioned function, will not be described here.
As shown in figure 1, a test electrode is respectively equipped with the left movable block 3 and relative two faces of right movable block 4,
Each test electrode electrically connects with a high-voltage insulating wire 6, and high-voltage insulating wire 6 extends to outside the casing and forms wiring
End.The junction of the high-voltage insulating wire 6 and the casing is provided with sealing-plug 29, for gap between the two to be carried out
Encapsulation process.As shown in figure 1, the movable block can be upper small rectangle, the structure of lower big rectangle, the test electrode can be consolidated
It is scheduled on the vertical side of the small rectangle, top surface or is embedded on the small rectangle.It should be noted that the tool of the movable block
Shape can also be other forms, and those skilled in the art can also carry out appropriate selection according to being actually needed.
Preferably, as shown in figure 1, described device also includes the controller outside casing（Not shown in figure）, insulation gas
Body gas cylinder 7 and temperature control panel 8 and Temperature Humidity Sensor 9 and temp.-adjustable fan 10 in the casing.The outlet of the gas cylinder
End is connected with high-pressure air pipe 11, and the gas cylinder is used to provide insulating gas, and the gas outlet of the high-pressure air pipe 11 is located at the case
In vivo, and the high-pressure air pipe 11 is provided with normally closed solenoid valve, and the magnetic valve is controlled to be formed on the controller, for described
Opened or closed under the control of controller, realize and insulating gas is filled with into the casing by the gas cylinder.
As shown in figure 1, the Temperature Humidity Sensor 9 is located on the inwall of the casing, it is defeated with the signal of the controller
Enter end connection, for gathering the humiture information in the casing；The temp.-adjustable fan 10 is located on the inwall of the casing, by
Control in the controller, for being adjusted under the control of the controller to the temperature and humidity in the casing；It is described
Temperature control panel 8 is located at the downside of the bottom plate 2, is controlled by the controller, under the control of the controller to the case
Body is heated, and the temperature and humidity in the casing is adjusted.It should be noted that the Temperature Humidity Sensor
9 and the temp.-adjustable fan 10 can use device of the prior art, concrete model will not be described here.
Further, generally, the controller includes microprocessor and human-computer interaction module, the man-machine friendship
Mutual module is bi-directionally connected with the microprocessor, for inputting the data of control command and display output.Further, it is described
Human-computer interaction module at least two kinds of ways of realization, the first：For the touch-screen display being bi-directionally connected with the microprocessor,
Touch-screen is divided into several regions, and some region therein can realize input function, and remaining region can be realized
Display function.Second：For the key-press module that is connected with the signal input part of the microprocessor and with the microprocessor
Signal output part connection display module, the key-press module realizes order input function, and display module is accomplished that number
According to output display function.It should be noted that it is any in the specifically used above-mentioned two situations of human-computer interaction module, this
Art personnel can be according to appropriate selections of carry out such as function needs and costs of manufacture.
As shown in figs. 1 and 3, described device also includes limiter, and the limiter includes caging bolt 12 and stop nut
（Not shown in figure）, one end of the caging bolt 12 connects after sequentially passing through left and right movable block 3,4 with the stop nut screw thread
Connect, by adjusting position of the stop nut on the caging bolt 12, adjust distance between left and right movable block 3,4.Need
It is noted that in described device, the number of caging bolt 12 can be one or two, if can make left activity using two
Connection between block and right movable block is more stable.
The concrete structure of the test electrode has two kinds：
The first：The test electrode is used to produce vertical and insulating materials electric field, as shown in figures 1 and 3, institute
It is disk electrode 13 to state test electrode, and the disk electrode includes horizontal connection portion 14 and the disk electrode portion 15 being vertically arranged.
The one end in the horizontal connection portion 14 is fixedly connected with the movable block（As shown in figs. 1 and 3, the one end in the horizontal connection portion
It is fixedly connected with the vertical side of the small rectangle, can be further connected through a screw thread between the two）, the horizontal connection
The other end in portion 14 is fixedly connected with the disk electrode portion 15, and the disk electrode portion 15 is located at the outside of the movable block
Outside face, when testing electric field-sensitive type insulating materials 16, the insulating materials is clamped by two pieces of disk electrode portions 15
（The insulating materials is vertically arranged）.When one of test electrode obtains electric, can be produced between two test electrodes
The raw electric field perpendicular to the insulating materials.
Preferably, a diameter of 30mm-40mm in the disk electrode portion 15, thickness 4mm-8mm, and the horizontal connection portion
14 length can be configured according to being actually needed, and need to ensure at that time, the horizontal connection portion 14 and the disk
The end that electrode portion 15 is connected, extend to outside the movable block.
Second：The test electrode is used to produce parallel and insulating materials horizontal component of electric field, as shown in Fig. 2 institute
Stating test electrode includes strip electrode group, and the strip electrode group is included in upper and lower symmetrically arranged upper strip electrode 17 and lower bar
Shape electrode 18.In strip electrode group described in every group, lower strip electrode 18 is fixedly connected with the movable block（It is as shown in Fig. 2 described
Two sides of lower strip electrode and upper strip electrode are embedded in the small rectangle, and the lower strip electrode and the small rectangle
It is fixedly connected）, installed between upper strip electrode 17 and lower strip electrode 18 by means of screw 19, when to electric field-sensitive type insulation material
When material 16 is tested, the insulating materials is in being horizontally disposed with, and the left and right sides of the insulating materials is respectively by two groups of bar shapeds electricity
Clamped by the group of pole.
Specifically, when being tested using the strip electrode group the insulating materials, the screw is rotated first
19 make strip electrode 17 be separated with lower strip electrode 18, and the lower bar shaped in left side then will be positioned on the left of the insulating materials
It on electrode 18, and will be positioned on the right side of the insulating materials on the lower strip electrode 18 on right side, the insulating materials placed
After good, the upper strip electrode 17 is fixed on the lower strip electrode 18 by using the screw 19, it is now described exhausted
Edge material is clamped by two groups of strip electrode groups.It should be noted that screw 19 can set two in every group of strip electrode group,
In addition, the screw is additionally operable to electrically connect with high-voltage insulating wire, it is connected by high-voltage insulating wire with external power source.
Preferably, the length of the upper and lower strip electrode 17,18 is（40mm-60mm）×（8mm-12mm）×
（8mm-12mm）；And above set in strip electrode group described in every group between strip electrode 17 and lower strip electrode 18 by two intervals
The screw 19 put connects together, and the distance between two screws 19 are 20mm-30mm.It should be noted that the upper and lower bar shaped
The specific length of electrode is not limited to above-mentioned design parameter, and those skilled in the art can be carried out suitably according to being actually needed
Adjustment.
Being found by l-G simulation test, the voltage loaded on the copper electrode of two kinds of profiles is higher, and the distance between electrode is nearer,
Field strength between two electrodes is bigger, easier so that tested insulating materials is undergone phase transition.Further, since measured material has necessarily
Width and thickness, it is desirable to two kinds of test electrodes is preferably fixed measured material, it is necessary to test electrode have it is certain
Pingdu and certain pressure can be applied, therefore the factor of these two aspects is taken into account, by disk electrode portion and the strip electrode
Surface is polished.Test and the pressure added on the insulating material is controlled by limiter when electrode is disk electrode；Test electrode
For strip electrode when, pressure by the control of bolt between the two plus on the insulating material.
Insulating gas is full of in test device, ensures to occur when tested insulating materials both ends obtain strong electric field environment again
Electric discharge phenomena, while can also prevent the corona of Pneumatic time-delay high-voltage switch gear from influenceing.Temperature control panel, temp.-adjustable fan, Temperature Humidity Sensor
And controller can ensure that the temperature in the casing is uniformly unified, inhibitory action is played to the temperature change of test environment.
Two kinds of electrodes test different field strength directions respectively（It is horizontal or vertical）When material phase transition performance, it is easy to use.
As shown in figure 3, the invention also discloses a kind of electric field-sensitive type insulating materials static properties test system, bag
Include foregoing electric field-sensitive type insulating materials static properties test device, in addition to high-voltage DC power supply 20, current-limiting resistance 21,
One Pneumatic time-delay high-voltage switch gear K1, high pressure noninductive capacitor 23, the second Pneumatic time-delay high-voltage switch gear K2, sampling resistor 25, oscillography
Device 26, the 3rd Pneumatic time-delay high-voltage switch gear K3 and discharge resistance 28.
As shown in figure 4, the positive pole of the high-voltage DC power supply 20 presses off through current-limiting resistance 21, the first Pneumatic time-delay height successively
It is connected after closing K1 and the capacitor with the negative pole of the power supply, and the negative pole ground connection of the power supply；Described second pneumatically prolongs
When high-voltage switch gear K2 the termination capacitor and one end for being electrically connected of the first Pneumatic time-delay high-voltage switch gear K1, described second
The Pneumatic time-delay high-voltage switch gear K2 other end is connected with the terminals of a high-voltage insulating wire 6 in the test device, described
The terminals of another high-voltage insulating wire 6 electrically connect with one end of the sampling resistor 25 in test device, the sampling electricity
The other end ground connection of resistance 25, the oscillograph 26 are in parallel with the sampling resistor 25；The 3rd Pneumatic time-delay high-voltage switch gear K3
A termination capacitor and one end for being electrically connected of the first Pneumatic time-delay high-voltage switch gear K1, the 3rd Pneumatic time-delay high pressure
The switch K3 other end is grounded through the discharge resistance.
Pneumatic time-delay high-voltage switch gear is the break-make that air-operated solenoid valve is controlled by low pressure time-delay relay, makes cylinder that position occur
The device of shifting, the end of cylinder are equipped with hemispherical copper electrode, and this end is movable end, and fixing end is housed inside test device, Gu
Fixed end is equipped with another hemispherical copper electrode, and both form a set of Pneumatic time-delay high-voltage switch gear.Fixed termination electrode and movable end electricity
Cut-off distance between pole can adjust, and the copper electrode of fixing end is equipped with spring, and placement activity termination electrode occurs to contact firmly with it, energy
Play buffering and contact good effect.The time-delay relay of the Pneumatic time-delay high-voltage switch gear can full-automatic or semi-automatic control
System, most short switch off time 0.1s.The open or close of the high-voltage switch gear K1-K3 can be controlled by the controller.
, it is necessary to first carry out system checking test before being tested using the system, test system complete in itself is judged
Good situation.The method of judgement is：In the case where test system does not clamp insulating materials, make to be electrically connected between two test electrodes
Connect, if test system has good state, then by the capacitor discharge waveform of display on oscillograph.
As shown in figure 5, the main test flow chart for the system.The insulating materials is surveyed using the system
During examination（Relative to the horizontal component of electric field test or vertical electric field test of the insulating materials）, adjust left movable block 3 and right movable block 4
The distance between, the insulating materials is clamped between two test electrodes；After insulating materials clamps, make the control
Device enters test mode, and controller controls the magnetic valve to open, insulating gas is filled with into the casing, and according to warm and humid
Spend the information that sensor 9 gathers and control the fan action, humiture in the casing is uniformly unified；It is defeated to adjust the power supply
Go out voltage, control the first Pneumatic time-delay high-voltage switch gear K1 closures, now the second Pneumatic time-delay high-voltage switch gear K2 and the 3rd gas
Dynamic delay high-voltage switch gear K3 is opened, and is charged by the high-voltage DC power supply 20 for the capacitor；The capacitor is fully charged
After control the first Pneumatic time-delay high-voltage switch gear K1 to open, control the second Pneumatic time-delay high-voltage switch gear K2 closures, now
3rd Pneumatic time-delay high-voltage switch gear K3 is opened, the capacitor discharge, and excitation highfield is produced between the test electrode, and
The excitation highfield is applied to the insulating materials, if the parameter of oscillograph 26 has large change, illustrates tested insulation material
Material can calculate the electrical conductivity of measured material by the change of the peak-to-peak voltage value of oscillograph there occurs phase transformation, while can be with
The transformation curve of material is drawn out, is not undergone phase transition conversely, being then tested insulating materials；After being completed, control described second
Pneumatic time-delay high-voltage switch gear K2 is opened, the 3rd Pneumatic time-delay high-voltage switch gear K3 closures, now the first Pneumatic time-delay high-voltage switch gear K1
In open mode, discharge process is carried out to possible remaining electricity on the capacitor by the discharge resistance；If by
Survey insulating materials do not undergo phase transition, then be repeated above-mentioned capacitor discharge, electric power output voltage regulation to capacitor charging,
Capacitor discharge produces the step of excitation electrical field, until the tested insulating materials is undergone phase transition.
Because the phase-change characteristic of the insulating materials determines that the resistance of material differs at least 10 before and after change3Times, this just makes
10 are also must endure as into voltage source3Change more than times, this system avoid material property using the design of capacitor charging/discharging
Damage of the change to power supply, the function of protection power source can be played.Discharge resistance in test system can fill at the end of test
Divide the remaining capacity for capacitor of releasing, ensure safe operation.Because being Hi-pot test, when switching control using common electrical, high pressure
Electricity is possible to that control terminal can be crosstalked into along control circuit, and danger is caused to personal safety.So Pneumatic time-delay high-voltage switch gear is chosen,
Can remote control, and can ensure safety, while can also reduce as far as possible corona influence.It is adaptive that the system is applied to large scale
The characteristic test of material, it is possible to provide High Voltage field excitation, insulate environment, meets Larger Dynamic scope measurement demand.
Claims (10)
- A kind of 1. electric field-sensitive type insulating materials static properties test device, it is characterised in that：Including insulation transparent casing（1）, Bottom plate in the casing（2）Dielectric holder is provided with, the dielectric holder includes left movable block（3）With right movable block（4）, institute State left movable block（3）With right movable block（4）With the bottom plate（2）Between pass through slide rail or chute（5）Mutually sliding connection, The left movable block（3）With right movable block（4）Be respectively equipped with a test electrode on two relative faces, it is each test electrode with One high-voltage insulating wire（6）Electrical connection, and high-voltage insulating wire（6）Extend to outside the casing and form terminals.
- 2. electric field-sensitive type insulating materials static properties test device as claimed in claim 1, it is characterised in that：Described device Also include controller, insulating gas gas cylinder outside casing（7）And temperature control panel（8）And the humiture in the casing Sensor（9）And temp.-adjustable fan（10）, the outlet side of the gas cylinder is connected with high-pressure air pipe（11）, the high-pressure air pipe（11）'s Gas outlet is located in the casing, and the high-pressure air pipe（11）Normally closed solenoid valve is provided with, the magnetic valve is controlled to be formed on institute Controller is stated, for being opened or closed under the control of the controller；The Temperature Humidity Sensor（9）Positioned at the casing On inwall, it is connected with the signal input part of the controller, for gathering the humiture information in the casing；The temperature adjustment wind Fan（10）On the inwall of the casing, be controlled by the controller, under the control of the controller to the case Internal temperature and humidity is adjusted；The temperature control panel（8）Positioned at the bottom plate（2）Downside, be controlled by the controller, For heating under the control of the controller to the casing, the temperature and humidity in the casing is adjusted Section.
- 3. electric field-sensitive type insulating materials static properties test device as claimed in claim 2, it is characterised in that：The control Device includes microprocessor and human-computer interaction module, and the human-computer interaction module is bi-directionally connected with the microprocessor, for defeated Enter the data of control command and display output.
- 4. electric field-sensitive type insulating materials static properties test device as claimed in claim 1, it is characterised in that：Described device Also include limiter, the limiter includes caging bolt（12）And stop nut, the caging bolt（12）One end successively Through left and right movable block（3,4）It is threadedly coupled afterwards with the stop nut, by adjusting the stop nut in the spacing spiral shell Bolt（12）On position, adjust left and right movable block（3,4）Between distance.
- 5. electric field-sensitive type insulating materials static properties test device as claimed in claim 1, it is characterised in that：The test Electrode is disk electrode（13）, the disk electrode includes horizontal connection portion（14）With the disk electrode portion being vertically arranged（15）, The horizontal connection portion（14）One end be fixedly connected with the movable block, the horizontal connection portion（14）The other end with it is described Disk electrode portion（15）It is fixedly connected, and the disk electrode portion（15）Outside the lateral surface of the movable block, when to electricity Field sensitive type insulating materials（16）When being tested, the insulating materials is in be vertically arranged, and the insulating materials is by two pieces of circles Disc electrode portion（15）Clamping, the disk electrode（13）Between be used to producing it is vertical with insulating materials electric field.
- 6. electric field-sensitive type insulating materials static properties test device as claimed in claim 5, it is characterised in that：The disk A diameter of 30mm-40mm of electrode portion, thickness 4mm-8mm.
- 7. electric field-sensitive type insulating materials static properties test device as claimed in claim 1, it is characterised in that：The test Electrode includes strip electrode group, and the strip electrode group is included in upper and lower symmetrically arranged upper strip electrode（17）With lower bar shaped electricity Pole（18）, in strip electrode group described in every group, lower strip electrode（18）It is fixedly connected with the movable block, upper strip electrode（17） With lower strip electrode（18）Between by means of screw（19）Installation, when to electric field-sensitive type insulating materials（16）When being tested, For the insulating materials in horizontally disposed, the left and right sides of the insulating materials is described respectively clamped by two groups of strip electrode groups It is used to produce the electric field parallel to the insulating materials between strip electrode group.
- 8. electric field-sensitive type insulating materials static properties test device as claimed in claim 7, it is characterised in that：On described, Lower strip electrode（17,18）Length be（40mm-60mm）×（8mm-12mm）×（8mm-12mm）；And bar described in every group Upper strip electrode in shape electrode group（17）With lower strip electrode（18）Between pass through two spaced screws（19）It is connected to Together, two screw（19）The distance between be 20mm-30mm.
- A kind of 9. electric field-sensitive type insulating materials static properties test system, it is characterised in that：Including any one in such as right 1-8 Electric field-sensitive type insulating materials static properties test device described in, in addition to high-voltage DC power supply（20）, current-limiting resistance （21）, the first Pneumatic time-delay high-voltage switch gear K1（22）, high pressure noninductive capacitor（23）, the second Pneumatic time-delay high-voltage switch gear K2 （24）, sampling resistor（25）, oscillograph（26）, the 3rd Pneumatic time-delay high-voltage switch gear K3（27）And discharge resistance（28）, the height Press dc source（20）Positive pole successively through current-limiting resistance（21）, the first Pneumatic time-delay high-voltage switch gear K1（22）And the electric capacity Negative pole after device with the power supply is connected, and the negative pole ground connection of the power supply；The second Pneumatic time-delay high-voltage switch gear K2（24） A termination capacitor and the first Pneumatic time-delay high-voltage switch gear K1（22）The one end being electrically connected, second Pneumatic time-delay High-voltage switch gear K2（24）The other end and the test device in a high-voltage insulating wire（6）Terminals connection, the survey Trial assembly another high-voltage insulating wire in putting（6）Terminals and the sampling resistor（25）One end electrical connection, the sampling Resistance（25）The other end ground connection, the oscillograph（26）With the sampling resistor（25）It is in parallel；3rd Pneumatic time-delay is high Compress switch K3（27）A termination capacitor and the first Pneumatic time-delay high-voltage switch gear K1（22）The one end being electrically connected, it is described 3rd Pneumatic time-delay high-voltage switch gear K3（27）The other end through the discharge resistance（28）Ground connection.
- 10. the electric field-sensitive type insulating materials static properties test system as shown in claim 9, it is characterised in that：The height The K1-K3 that compresses switch is gate-controlled switch, and the open or close of the high-voltage switch gear K1-K3 is controlled by controller.
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| CN201720368119.3U CN206725705U (en) | 2017-04-10 | 2017-04-10 | Electric field-sensitive type insulating materials static properties test device and system |
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| CN201720368119.3U CN206725705U (en) | 2017-04-10 | 2017-04-10 | Electric field-sensitive type insulating materials static properties test device and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679103A (en) * | 2020-06-03 | 2020-09-18 | 国网天津市电力公司电力科学研究院 | High-voltage cable water-blocking tape electrical performance test system based on three-electrode method |
| CN117517805A (en) * | 2023-11-21 | 2024-02-06 | 北京信息科技大学 | Resonant electrostatic field sensor and electric field detection device |
-
2017
- 2017-04-10 CN CN201720368119.3U patent/CN206725705U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679103A (en) * | 2020-06-03 | 2020-09-18 | 国网天津市电力公司电力科学研究院 | High-voltage cable water-blocking tape electrical performance test system based on three-electrode method |
| CN117517805A (en) * | 2023-11-21 | 2024-02-06 | 北京信息科技大学 | Resonant electrostatic field sensor and electric field detection device |
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