CN205262935U - Joint ageing tests device of heat - vibration of insulating appearance section of XLPE - Google Patents
Joint ageing tests device of heat - vibration of insulating appearance section of XLPE Download PDFInfo
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- CN205262935U CN205262935U CN201521018923.6U CN201521018923U CN205262935U CN 205262935 U CN205262935 U CN 205262935U CN 201521018923 U CN201521018923 U CN 201521018923U CN 205262935 U CN205262935 U CN 205262935U
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- xlpe
- sample section
- vibration
- appearance section
- heat
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Links
- 229920003020 cross-linked polyethylene Polymers 0.000 title claims abstract description 34
- 239000004703 cross-linked polyethylene Substances 0.000 title claims abstract description 34
- 230000032683 aging Effects 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims description 10
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides the insulating appearance section de re of a XLPE the joint ageing tests device of vibration include: constant temperature ageing oven and XLPE appearance section vibration mechanism, XLPE appearance section vibration mechanism sets up inside the constant temperature ageing oven, XLPE appearance section vibration mechanism includes: shaking table (1), dead lever (2), fixed table top (3) and appearance section mounting fixture (4) from supreme setting down, shaking table (1) includes electro -magnet and converter, the device has increased XLPE appearance section vibration mechanism makes the joint ageing tests of heat - vibration can more be close to actual cable operational aspect.
Description
Technical field
The utility model relates to a kind of test of T & D Technology insulating materials, is specifically related to a kind of XLPE insulationHeat-vibrating ageing test apparatus of sample section.
Background technology
Power cable line is as important urban electric power delivery vehicles, and power cable is in urban electricity systemNumber of applications increasing year by year, become main passway for transmitting electricity at the cable run in important city, therefore oneDawn power cable line breaks down, and will cause serious consequence to power supply system, and power cable byIn himself structure and operation characteristic, occur that the quantity of operation troubles also happens occasionally. Therefore be necessary to analyze electricityThe feature of cable operation and the influence factor of safe operation, thereby the property safe and reliable to operation of raising power cable. ElectricityThe impact of also bearing running environment in the running of cable road except bearing voltage and current, cable conductor existsUnder the function of current, not only can produce heat, also can produce electric and magnetic oscillation, and heat and vibration all will act directly on cableXLPE insulation on, the simultaneously vibration of external environment also can be directly delivered on cable insulation, and the fortune of insulationRow health parameter is significant to the safe operation of cable run.
The vibration performance of power cable line mainly comprises self electromagnetism vibration and ambient vibration two aspects, whereinThe frequency of the electric and magnetic oscillation that in cable self-operating process, self electric current causes is 100Hz, 200Hz, 300Hz etc.,Wherein with the vibration amplitude maximum under 100Hz vibration frequency; External environment acts on the frequency of the vibration on cableBe mainly below 30Hz. Simultaneously the operational shock frequency of cable and amplitude also with and lay environment, arrangement etc.Factor is relevant. XLPE cable is 90 DEG C in normal running (operation) conditions lower conductor maximum permissible temperature, under short circuit conditionConductor maximum permissible temperature is 250 DEG C.
Therefore in cable running, not only exist heat also to have the impact of vibration, particularly cable laying is at bridgeIn the particular surroundings of beam, be, the impact of vibration is more obvious, and analysis draws and causes the cracking of XLPE cable line insulationEven the major reason of fault is heat and vibration. The health status of the cable laying in domestic bridge need to be triedTest analysis, the while is because the number of faults of the cable run that XLPE insulation cracking causes constantly increases.
Current existing XLPE degradation is all taking heat ageing as main, does not consider actual cable circuit fortuneAging acceleration under heat-vibrating effect in row process, does not vibrate degradation. Therefore,Carry out heat-vibrating degradation time necessity. The feature of the vibration applying should be according to cable runOperational shock feature is determined.
Utility model content
The utility model is for the operation characteristic of the feature of XLPE material, construction of cable feature, cable run,Design the ageing test apparatus of XLPE (crosslinked polyethylene) insulation sample section.
XLPE insulation sample section Re ?a vibrating ageing test apparatus, comprising: constant temperature ageing oven and XLPESample section vibrating mechanism, described XLPE sample section vibrating mechanism is arranged on constant temperature ageing oven inside, described XLPE sample sectionVibrating mechanism comprises: shake table (1), fixed bar (2), fixed mesa (3) and sample section stationary fixture (4),Described shake table (1) includes electromagnet and frequency converter.
Further, described fixed mesa (3) and shake table (1) be arranged in parallel mutually up and down, use therebetween verticallyThe fixed bar (2) of setting up supports.
Further, on described fixed mesa (3), be provided with sample section stationary fixture (4).
Further, described sample section stationary fixture (4) comprises that one end is stiff end, and the other end is adjustable in lengthStrap-like member.
Further, described fixed mesa (3) is provided with the compression of the fixing adjustable end of described sample section stationary fixture (4)Part.
Further, described compressing member by respectively vertical and be parallel to described fixed mesa (3) threaded fasteners andForm with the axial vertical bar shaped compressing member of described strap-like member.
Further, after shake table (1) energising, drive fixed bar (2) to pump, making to vibrate can be equalEven being loaded in cable sample section.
Further, the frequency of vibrating by the energising frequency adjustment of the inner frequency converter of change shake table (1) is correspondingChange the amplitude being loaded in cable sample section.
With nearest prior art ratio, the technical scheme that the utility model provides has following excellent effect:
(1) increase XLPE sample section vibrating mechanism, made heat-vibrating degradation can more approaching realityBorder cable ruuning situation.
Brief description of the drawings
Fig. 1 is heat-vibrating aging testing method and test dress of a kind of XLPE insulation of the utility model sample sectionThe structural representation of putting;
Reference numeral: 1-shake table, 2-fixed bar, 3-fixed mesa, 4-sample section stationary fixture, 5-XLPESample section
Specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in more detail.
The purpose of this utility model is further to improve cable by carrying out heat-vibrating degradationThe aging conditions analysis of the XLPE insulation in circuit running,
The utility model provides a kind of heat-vibrating ageing test apparatus of XLPE insulation sample section, comprising: perseveranceTemperature ageing oven and XLPE sample section vibrating mechanism.
As shown in Figure 1, XLPE sample section vibrating mechanism is by shake table 1 (including electromagnet, frequency converter), solidThe compositions such as fixed pole 2, fixed mesa 3, sample section stationary fixture 4, are fixed on shake table 1 by nut by fixed bar 2Upper, fixed mesa 3 is arranged on fixed bar 2, on fixed mesa 3, says XLPE sample section 5 with sample section stationary fixture 4Fixing, multiple XLPE sample sections can be placed on fixed mesa. Cable style on fixed mesa can be at shake table1 bestir oneself is not that certain point is vibrated by mechanical stress with lower evenly shaking. After shake table 1 energising, drive on fixed bar 2Lower reciprocating motion, make vibration can uniform load on cable sample section, by changing the inner frequency conversion of shake table 1The energising frequency of device can be adjusted the corresponding amplitude being loaded in cable sample section that changes of frequency of vibration, makes to executeThe amplitude and the frequency that are added in the vibration in XLPE sample section meet the requirement of XLPE sample section heat-vibration aging testing method.
XLPE sample section vibrating mechanism entirety is put into constant temperature ageing oven, and keep the temperature of ageing oven to meetThe requirement of XLPE sample section heat-vibration aging testing method.
Finally should be noted that: above embodiment is only for the technical solution of the utility model is described but not to itThe restriction of protection domain, although the application is had been described in detail with reference to above-described embodiment, affiliated field generalLogical technical staff is to be understood that: those skilled in the art still can be to the specific embodiment party of application after reading the applicationFormula is carried out all changes, revises or is equal to replacement, but these change, revise or be equal to replacement, all in ShenWithin the claim protection domain that please await the reply.
Claims (6)
1. a hot ?vibrating ageing test apparatus for XLPE insulation sample section, is characterized in that described device bagDraw together: constant temperature ageing oven and XLPE sample section vibrating mechanism, it is aging that described XLPE sample section vibrating mechanism is arranged on constant temperatureCase inside, described XLPE sample section vibrating mechanism comprises: shake table (1), fixed bar (2), fixed mesa (3)With sample section stationary fixture (4), described shake table (1) includes electromagnet and frequency converter.
2. device as claimed in claim 1, is characterized in that, described fixed mesa (3) and shake table (1)Mutually be arranged in parallel up and down, support with the fixed bar (2) of vertically setting up therebetween.
3. device as claimed in claim 1, is characterized in that, described fixed mesa is provided with sample Duan Gu on (3)Clamp tool (4).
4. device as claimed in claim 3, is characterized in that, described sample section stationary fixture (4) comprises one endFor stiff end, the strap-like member that the other end is adjustable in length.
5. device as claimed in claim 4, is characterized in that, described fixed mesa (3) is provided with fixing described sampleThe compressing member of the adjustable end of section stationary fixture (4).
6. device as claimed in claim 5, is characterized in that, described compressing member is by vertical and be parallel to respectivelyThe threaded fasteners of described fixed mesa (3) with described strap-like member axially vertical bar shaped compressing member form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018923.6U CN205262935U (en) | 2015-12-09 | 2015-12-09 | Joint ageing tests device of heat - vibration of insulating appearance section of XLPE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018923.6U CN205262935U (en) | 2015-12-09 | 2015-12-09 | Joint ageing tests device of heat - vibration of insulating appearance section of XLPE |
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| Publication Number | Publication Date |
|---|---|
| CN205262935U true CN205262935U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521018923.6U Active CN205262935U (en) | 2015-12-09 | 2015-12-09 | Joint ageing tests device of heat - vibration of insulating appearance section of XLPE |
Country Status (1)
| Country | Link |
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| CN (1) | CN205262935U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525606A (en) * | 2016-10-21 | 2017-03-22 | 中国电力科学研究院 | Ageing test device for thermal-shear stress of XLPE sample sheet |
| CN106855594A (en) * | 2015-12-09 | 2017-06-16 | 中国电力科学研究院 | Heat-vibrating the ageing test apparatus and method of a kind of XLPE insulation sample section |
-
2015
- 2015-12-09 CN CN201521018923.6U patent/CN205262935U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855594A (en) * | 2015-12-09 | 2017-06-16 | 中国电力科学研究院 | Heat-vibrating the ageing test apparatus and method of a kind of XLPE insulation sample section |
| CN106525606A (en) * | 2016-10-21 | 2017-03-22 | 中国电力科学研究院 | Ageing test device for thermal-shear stress of XLPE sample sheet |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |