CN208092135U - Dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions - Google Patents
Dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions Download PDFInfo
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- CN208092135U CN208092135U CN201820642207.2U CN201820642207U CN208092135U CN 208092135 U CN208092135 U CN 208092135U CN 201820642207 U CN201820642207 U CN 201820642207U CN 208092135 U CN208092135 U CN 208092135U
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- measuring device
- cryogenic conditions
- property measuring
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Abstract
Dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions of the utility model, including：Tubular main tank body, the affixed lower cover in tubular main tank body lower end, upper end overlaps disc insulator, supporting rod and supporting rack are inserted on lower cover, the supporting rod lower end connects driving device, the glass container for being loaded with liquid nitrogen is installed on supporting rack, affixed first fixed link of post upper and the second fixed link, the lower end of second fixed link is fixed in backing plate, it is provided with solid polymer sample above backing plate, it is provided with first electrode model and second electrode model above solid polymer sample, is hung equipped with electrode above solid polymer sample.By being changed to the distance between solid polymer and liquid nitrogen solution, does not have to open tank body to achieve the purpose that change solid polymer temperature, when experiment carries out, the time that experiment carries out is made to greatly shorten and required SF6Gas greatly reduces, and saves cost and time.
Description
Technical field：
The utility model is related to solid insulating material electric discharge and ultra-high-tension power transmission line technical fields, and in particular to a kind of low temperature
Under the conditions of dielectric gas-solid interface flashover property measuring device.
Background technology：
GIS/GIL equipment is applied since the 1960s and 1970s and has been run on all over the world extensively, and extra-high
Pressure transmission of electricity and offshore large-scale wind power transportation art have huge applications foreground.However GIS/GIL belongs to gentle by solid dielectric
Body medium composition meets insulation system, and the part of internal gas-solid boundary is whole system insulation place the weakest.?
Under the action of certain applied voltage, creeping discharge often occurs first at gas-solid interface inside GIS/GIL；With pressurization width
It is worth the raising with the time, the creeping discharge on gas-solid interface may develop into the breakdown of penetrability, and it is existing to generate edge flashing
As influencing the normal operation of equipment, even resulting in the generation of insulation fault.Therefore, dielectric gas-solid interface flashover property is studied,
Have great importance for improving gas insulated electric apparatus reliability of operation.
Under the influence of different loads, varying environment temperature, GIS/GIL equipment internal temperature also can be different therewith, make solid
Body polymer insulator surface temperature is changed, so as to cause solid polymer insulator volume conductance, surface conductivity
And the change of dielectric constant.The domestic and international some scholars of this Quasi-experiment study have had progress, in some extremely cold areas GIS/
GIL internal temperatures are extremely low, or even subzero, and in the case where loading smaller, lead to solid polymer insulator temperature pole
It is low, influence dielectric gas-solid interface flashover property.Therefore just it is badly in need of carrying out the experiment of Gas-solid surface charge measurement at low temperature
Research.
Domestic and foreign scholars deposit dielectric gas-solid interface flashover property measuring device experimental study under cryogenic conditions at present
In many shortcomings, such as：
(1) experimental provision is mostly to carry out low temperature flashover experiment under atmospheric environment, cannot carry out SF at this stage6Under environment
Edge flashing is tested, with practical grave fault；
(2) experiment can be in SF at this stage6The experimental provision that edge flashing experiment is carried out under environment, lacks the control under low temperature
Warm system；
(3) experimental provision is changed solid polymer temperature using alternating temperature piece mostly at this stage, however alternating temperature piece is mostly
Metal shape, such mode can influence dielectric gas-solid interface flashover property, and certain influence is generated to experiment.
In order to more deep dielectric gas-solid interface insulator arc-over characteristic, gas insulated electric apparatus fortune is improved
Capable stability promotes the functionization of gas insulated electric apparatus, it is quite necessary to dielectric gas-solid circle in a low temperature of existing
Face edge flashing experimental provision is improved and perfect, can be safer under high-voltage isulation gaseous environment, reliable
To disc insulator carry out surface charge measurement.
Utility model content：
The purpose of this utility model is to provide dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions, solution
Certainly solid polymer edge flashing experimental provision cannot carry out the solid in sealed gas chamber under cryogenic under low temperature at this stage
The problem of polymer edge flashing is tested.
To achieve the above object, the utility model uses following technical scheme：
Dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions provided by the utility model, including：Cylinder
Shape main tank body, the tubular main tank body lower end are connected with lower cover, and the upper end is overlapped with disc insulator, is opened on the lower cover
If there are two first through hole, supporting rod is plugged respectively in two first through hole, one of them described supporting rod lower end connection
There are driving device, the driving device that the supporting rod is driven to move up and down, supporting rack, the branch are provided on the lower cover
Glass container is installed on support, liquid nitrogen is loaded in the glass container, two affixed levels of post upper are set
The first fixed link set, the one end of first fixed link toward each other are respectively and fixedly connected with the second fixed link being vertically arranged, two
The lower end of second fixed link is fixed in backing plate, and the backing plate is placed in above liquid nitrogen, and solid is provided with above the backing plate
Polymer sample, the solid polymer sample top are provided with first electrode model and second electrode model, and the solid is poly-
It closes and is hung equipped with electrode above object sample, connected by the first conducting wire between the electrode and the first electrode model and lower cover
Logical, the second electrode model is connected to lower cover by the second conducting wire, and is equipped with resistance and electricity on first conducting wire
Source, the lower cover are grounded after being connected to first conducting wire by privates.
Quartzy form is offered on the side wall of the tubular main tank body.
It is also equipped with tracheae on the lower cover, air valve is provided on the tracheae, the cylinder is fed to control gas
Shape main tank body.
The second through-hole is offered on the disc insulator, the electrode is inserted in second through-hole.
Second through hole is provided with sealing ring.
The driving device is stepper motor.
Gear is arranged on the output shaft of the driving device respectively, rack, institute are provided on the shaft of the supporting rod
It states gear and rack is meshed, the gear drives the rack movement, and then drives the supporting rod linear motion.
The driving device is that either the piston rod of the cylinder hydraulic cylinder or cylinder connects hydraulic cylinder with the supporting rod
It connects.
The first electrode model and second electrode model one end are placed on the solid polymer sample, the other end point
The backing plate is not fixed in by bolt.
The advantageous effect of dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions of the utility model：
1, the utility model proposes a kind of cryogenic conditions under dielectric gas-solid interface flashover property measuring device, with tradition
Temperature regulating device is placed on difference outside tank body, the device for controlling temperature is placed on to the inside of tank body；And the utility model
Measuring device is specially designed a kinetic control system, by being carried out to the distance between solid polymer and liquid nitrogen solution
Change, does not have to open tank body to achieve the purpose that change solid polymer temperature, when in this way carrying out experiment, be changed
The distance between solid polymer and liquid nitrogen solution make the time that experiment carries out greatly shorten, test required SF6Gas is significantly
It reduces, saves cost and time；
2, the utility model proposes a kind of cryogenic conditions under dielectric gas-solid interface flashover property measuring device, use
Liquid nitrogen boiling point is -196 DEG C, can be with the environment of the simulation extremely cold area of high degree, more closing to reality；
3, the utility model proposes a kind of cryogenic conditions under dielectric gas-solid interface flashover property measuring device, Ke Yizhun
The move distance of true control supporting rod, accurately controls the temperature of solid polymer；
4, the utility model proposes a kind of cryogenic conditions under dielectric gas-solid interface flashover property measuring device, Ke Yi
Flashover measurement experiment is carried out under gas with various pressure (0.1~0.6MPa)；
5, the utility model proposes a kind of cryogenic conditions under dielectric gas-solid interface flashover property measuring device, Ke Yigeng
Change different size, the insulator exemplar of thickness, electrode structure of different shapes (such as：Needle plate electrode, finger-type electrode etc.)；
6, the utility model proposes a kind of cryogenic conditions under dielectric gas-solid interface flashover property measuring device, can apply
In multiple voltage form, alternating voltage, DC voltage, surge voltage etc..
Description of the drawings：
Fig. 1 is the structural representation of dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions of the utility model
Figure；
Fig. 2 is movement when being measured using dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions
Status diagram；
In figure：1- tubular main tank bodies, 2- quartz forms, 3- lower covers, 4- disc insulators, 5- supporting rods, 6- driving dresses
It sets, 7- supporting racks, 8- glass containers, 9- liquid nitrogen, the first fixed links of 10-, the second fixed links of 11-, 12- backing plates, 13- solid polymerizations
Object sample, 14- first electrode models, 15- second electrode models, 16- electrodes, the first conducting wires of 17-, the second conducting wires of 18-, 19- electricity
Resistance, 20- power supplys, 21- privates, 22- air valves, 23- bolts.
Specific implementation mode：
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining relative position relation, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
To indicate or implying its relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical solution
Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not in the requires of the utility model
Protection domain within.
According to Fig. 1, dielectric gas-solid interface flashover property measures under a kind of cryogenic conditions provided by the utility model
Device, including：Tubular main tank body 1 offers quartzy form 2 on the side wall of the tubular main tank body 1, is seen during being convenient for measuring
Flashover is examined, 1 lower end of tubular main tank body is connected with lower cover 3, and the upper end is overlapped with disc insulator 4, the lower cover
It is opened up on plate 3 there are two first through hole, plugs supporting rod 5 respectively in two first through hole, one of them described supporting rod 5
Lower end is connected with driving device 6, and the driving device 6 drives the supporting rod 5 to move up and down, and is provided on the lower cover 3
Supporting rack 7 is equipped with glass container 8 on support frame as described above 7, liquid nitrogen 9, two branch is loaded in the glass container 8
Affixed horizontally disposed first fixed link 10 in 5 upper end of strut, the one end of first fixed link 10 toward each other are respectively and fixedly connected with perpendicular
The lower end of the second fixed link 11 being directly arranged, two second fixed links 11 is fixed in backing plate 12, and the backing plate 12 is placed in liquid
9 top of nitrogen, is provided with solid polymer sample 13 above the backing plate 12, and 13 top of the solid polymer sample is provided with
First electrode model 14 and second electrode model 15,13 top of the solid polymer sample are hung equipped with electrode 16, the electrode
It is connected to by the first conducting wire 17 between 16 and the first electrode model 14 and lower cover 3, the second electrode model 15 is under
Cover board 3 is connected to by the second conducting wire 18, and resistance 19 and power supply 20, the lower cover 3 are equipped on first conducting wire 17
It is grounded after being connected to first conducting wire 17 by privates 21.
Further, it is also equipped with tracheae on the lower cover 3, air valve 22 is provided on the tracheae, with control
Gas feeds the tubular main tank body 1, and sealing ring is also equipped in tracheae and 3 contact position of lower cover, can also be in tubular main tank
Barometer is installed on body 1, for measuring 1 internal gas pressure of tubular main tank body, the gas inside the tubular main tank body 1 detected
When body pressure is more than setting value, air valve 22 is disconnected.
Further, the second through-hole is offered on the disc insulator 4, it is logical that the electrode 16 is inserted in described second
Kong Zhong, and second through hole is provided with sealing ring.
Further, the driving device 6 is stepper motor, is arranged respectively on the output shaft of the driving device 6 with teeth
It takes turns, rack is provided on the shaft of the supporting rod 5, the gear and rack are meshed, and the gear drives the rack fortune
It is dynamic, and then the supporting rod 5 is driven to move along a straight line.
Further, the driving device 6 be hydraulic cylinder either the piston rod of the cylinder hydraulic cylinder or cylinder with
The supporting rod 5 connects.
Further, the first electrode model 14 and 15 one end of second electrode model are placed in the solid polymer sample
On 13, the other end is fixed in the backing plate 12 by bolt 23 respectively.
According to Fig.2, dielectric gas-solid interface flashover property under a kind of cryogenic conditions of the utility model is described in detail to survey
The process that amount device measures：
Step 1：Check the air-tightness of the tubular main tank body 1；
Step 2：It is poly- that solid is put between the backing plate 12 and the first electrode model 14 and second electrode model 15
Object sample 13 is closed, there are gaps between the first electrode model 14 and second electrode model 15, will be described by bolt 23
First electrode model 14 and second electrode model 15 are fixed in the backing plate 12, and the backing plate 12 makes institute above the liquid nitrogen 9
It states solid polymer sample 13 and reaches required temperature；
Step 3：The tubular main tank body 1 is vacuumized, and after evacuation to closed in tubular main tank body 1
Gas chamber is filled with insulating gas, in the present embodiment, insulating gas SF6；
Step 4：The power supply 20 is connected, slowly increases voltage to 13 surface of solid polymer sample and edge flashing occurs,
Flashover is observed, and records test data, the voltage can be direct current, exchange or surge voltage, and voltage can root
It is sized according to needs；
Step 5：Start driving device 6, drives the elevator row in vertical direction of supporting rod 5, make solid polymer sample 13
Distance increases between liquid nitrogen 9, until 13 temperature of solid polymer sample increases, repeat the above steps one~step 4, passes through tune
The different distance between solid polymer sample 13 and liquid nitrogen 9 is saved, the temperature of control solid polymer sample 13 is different, obtains not
Synthermal test data；
Step 6：Solid polymer sample 13 is taken out, its surface is handled, 13 table of solid polymer sample is got rid of
The poly- charge of area is specifically wiped with absolute ethyl alcohol in the present embodiment with excluding the influence that residual charge measures next time
It places 1-2 days afterwards, in case next time uses.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model rather than limits it
System, although the utility model is described in detail with reference to above-described embodiment, those of ordinary skill in the art should manage
Solution：Specific embodiment of the present utility model can be still modified or replaced equivalently, and without departing from the utility model
Any modification of spirit and scope or equivalent replacement should all cover in present claims range.
Claims (9)
1. dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions, which is characterized in that including：Tubular main tank
Body, the tubular main tank body lower end are connected with lower cover, and the upper end is overlapped with disc insulator, two are offered on the lower cover
A first through hole plugs supporting rod in two first through hole respectively, one of them described supporting rod lower end is connected with driving
Device, the driving device drive the supporting rod to move up and down, and are provided with supporting rack on the lower cover, on support frame as described above
Glass container is installed, liquid nitrogen, two post uppers affixed horizontally disposed are loaded in the glass container
One fixed link, the one end of first fixed link toward each other are respectively and fixedly connected with the second fixed link being vertically arranged, two described
The lower end of two fixed links is fixed in backing plate, and the backing plate is placed in above liquid nitrogen, and solid polymer is provided with above the backing plate
Sample, the solid polymer sample top are provided with first electrode model and second electrode model, the solid polymer examination
It hangs equipped with electrode above sample, is connected to by the first conducting wire between the electrode and the first electrode model and lower cover, it is described
Second electrode model is connected to lower cover by the second conducting wire, and is equipped with resistance and power supply on first conducting wire, described
Lower cover is grounded after being connected to first conducting wire by privates.
2. dielectric gas-solid interface flashover property measuring device, feature under a kind of cryogenic conditions according to claim 1
It is：Quartzy form is offered on the side wall of the tubular main tank body.
3. dielectric gas-solid interface flashover property measuring device, feature under a kind of cryogenic conditions according to claim 1
It is：It is also equipped with tracheae on the lower cover, air valve is provided on the tracheae, the tubular master is fed to control gas
Tank body.
4. dielectric gas-solid interface flashover property measuring device, feature under a kind of cryogenic conditions according to claim 1
It is：The second through-hole is offered on the disc insulator, the electrode is inserted in second through-hole.
5. dielectric gas-solid interface flashover property measuring device, feature under a kind of cryogenic conditions according to claim 4
It is：Second through hole is provided with sealing ring.
6. dielectric gas-solid interface flashover property measuring device, feature under a kind of cryogenic conditions according to claim 1
It is：The driving device is stepper motor.
7. dielectric gas-solid interface flashover property measuring device, feature under a kind of cryogenic conditions according to claim 6
It is：Gear is arranged on the output shaft of the driving device respectively, rack, the tooth are provided on the shaft of the supporting rod
Wheel and rack are meshed, and the gear drives the rack movement, and then drive the supporting rod linear motion.
8. dielectric gas-solid interface flashover property measuring device, feature under a kind of cryogenic conditions according to claim 1
It is：The driving device is that either the piston rod of the cylinder hydraulic cylinder or cylinder is connect hydraulic cylinder with the supporting rod.
9. dielectric gas-solid interface flashover property measuring device, feature under a kind of cryogenic conditions according to claim 1
It is：The first electrode model and second electrode model one end are placed on the solid polymer sample, other end difference
It is fixed in the backing plate by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820642207.2U CN208092135U (en) | 2018-05-02 | 2018-05-02 | Dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820642207.2U CN208092135U (en) | 2018-05-02 | 2018-05-02 | Dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions |
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| Publication Number | Publication Date |
|---|---|
| CN208092135U true CN208092135U (en) | 2018-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820642207.2U Expired - Fee Related CN208092135U (en) | 2018-05-02 | 2018-05-02 | Dielectric gas-solid interface flashover property measuring device under a kind of cryogenic conditions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918977A (en) * | 2018-05-02 | 2018-11-30 | 沈阳工业大学 | Dielectric gas-solid interface flashover property measuring device and method under a kind of cryogenic conditions |
| CN112147425A (en) * | 2020-08-27 | 2020-12-29 | 西安交通大学 | Low-temperature space charge measuring system |
-
2018
- 2018-05-02 CN CN201820642207.2U patent/CN208092135U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918977A (en) * | 2018-05-02 | 2018-11-30 | 沈阳工业大学 | Dielectric gas-solid interface flashover property measuring device and method under a kind of cryogenic conditions |
| CN108918977B (en) * | 2018-05-02 | 2024-02-06 | 沈阳工业大学 | Device and method for measuring dielectric gas-solid interface flashover characteristic under low temperature condition |
| CN112147425A (en) * | 2020-08-27 | 2020-12-29 | 西安交通大学 | Low-temperature space charge measuring system |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |