CN205749147U - A kind of power cable hot elongation test elongation measurement device - Google Patents
A kind of power cable hot elongation test elongation measurement device Download PDFInfo
- Publication number
- CN205749147U CN205749147U CN201620389363.3U CN201620389363U CN205749147U CN 205749147 U CN205749147 U CN 205749147U CN 201620389363 U CN201620389363 U CN 201620389363U CN 205749147 U CN205749147 U CN 205749147U
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- elongation
- power cable
- test
- laser beam
- measurement device
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000005259 measurement Methods 0.000 title claims abstract description 9
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A kind of power cable hot elongation test elongation measurement device, is made up of movable laser beam transmitter (1), scale (4), counterweight (3) and proof box (5).This device can quickly read elongation rate data lower to load, it is to avoid because naked eyes look at the error brought straight, it is ensured that the accuracy of test when power cable carries out hot elongation test.
Description
Technical field
This utility model relates to a kind of power cable hot elongation test elongation measurement device, belongs to laboratory equipment and technology neck
Territory.
Background technology
Along with the fast development of China's industry, improving constantly of living standards of the people, electric power energy increasingly becomes promotion
The important leverage of economic development, in order to adapt to the requirement of extensive transregional transmission of electricity and new energy power generation grid-connection, accelerates modern power network
System Construction, China is greatly developing construction supertension, the construction of ultra-high voltage transformer station.Electric wire is at the electric power base of China
Serving critically important link effect in the middle of plinth construction, power cable is the cable for transmitting and distribute electric energy, power cable
It is usually used in Urban Underground electrical network, electric station lead line, industrial and mining establishment's in-line power and crosses power transmission line under the sea water of river, power cable
Quality be directly connected to the safety and stability of whole operation of power networks, State Grid Corporation of China is strengthening the sampling observation power to power cable
Degree, it is ensured that the quality of power cable, and the hot elongation test of power cable is the key weighing power cable quality
Index Test, hot elongation test is the plastic deformation and permanent under heat and load effect of examination rubber insulation and sheath insulation material
A kind of method of inspection of deformation, its test method is that proof box is heated to 200 ± 3 DEG C, and sample and steel ruler are clamped in test
On frame, hanging up in the lower end of sample by mechanical stress is 0.2N/mm2Counterweight, test specimen reaches set point of temperature after putting into baking oven and opens
Beginning timing, measures the elongation of sample immediately after 15 minutes, percentage elongation under computational load.The main investigation of test is polyethylene
Crosslinking degree, the degree of cross linking more Gao Zere extend the least, if the hot elongation test of power cable is defective, illustrate cable heat with
Can accelerate deformation under load effect, gradually lose mechanical performance, until causing short circuit, cable cannot normally use.
The lower percentage elongation of load is a parameter of hot elongation test, and computational methods are that the elongation after specimen test is divided by examination
Original gauge length before testing, its accuracy is to pass judgment on the key index that power cable is the most qualified, but in test at present, elongation leans on
, there is certain artificial disturbance factor, affect data accuracy in perusal.
Summary of the invention
The purpose of this utility model is, for the problem of elongation measurement under the hot elongation load of power cable, this
The open a kind of power cable hot elongation test elongation measurement device of utility model.
The technical solution of the utility model is as follows: a kind of power cable hot elongation test elongation measurement device includes test
Case, movable laser beam transmitter, scale and counterweight.Described movable laser beam transmitter is installed on the outer side of proof box, just
To the sample being suspended in proof box；Scale is vertically disposed in by sample；Movable laser beam transmitter, sample and scale exist together
One plane.
Hanging counterweight under sample, movable laser beam transmitter launches laser, after test proceeds to 15 minutes of regulation,
By adjusting movable laser beam, observe and project the red line on slide calliper rule, read the length of laser rays, vice-minister on slide calliper rule in time
Degree deducts original gauge length, then be the elongation of sample, and elongation just draws the lower percentage elongation of load divided by original gauge length.
The beneficial effects of the utility model are, this utility model device utilizes movable laser beam transmitter, slide calliper rule, at electricity
When power cable carries out hot elongation test, quickly read elongation rate data lower to load, it is to avoid because naked eyes look at the error brought straight, protect
Demonstrate,prove the accuracy of test.
Accompanying drawing explanation
Fig. 1 is this utility model apparatus structure schematic diagram；
In figure, 1 is movable laser beam transmitter；2 is sample；3 is counterweight；4 is scale；5 is proof box.
Detailed description of the invention
Detailed description of the invention of the present utility model is as shown in Figure 1.
The present embodiment one power cable hot elongation test elongation measurement device includes proof box 5, movable laser beam
Emitter 1, scale 4 and counterweight 3.Described movable laser beam transmitter is installed on the outer side of proof box, just to being suspended on test
Sample in case；Scale is vertically disposed in by sample；Movable laser beam transmitter, sample and scale exist together a plane.
Sample is one section of power cable to be measured, hangs counterweight under sample, and movable laser beam transmitter launches laser,
After test proceeds to 15 minutes of regulation, by adjusting movable laser beam, observe and project the red line on slide calliper rule, read in time
The length of laser rays on card taking chi, secondary length deducts original gauge length, then be the elongation of sample, and elongation is divided by original gauge length just
Draw this power cable percentage elongation under a load.
Claims (1)
1. a power cable hot elongation test elongation measurement device, including proof box and counterweight, it is characterised in that described dress
Put and also include movable laser beam transmitter and scale；Described movable laser beam transmitter is installed on the outer side of proof box, just
To the sample being suspended in proof box；Scale is vertically disposed in by sample；Movable laser beam transmitter, sample and scale exist together
One plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389363.3U CN205749147U (en) | 2016-05-04 | 2016-05-04 | A kind of power cable hot elongation test elongation measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389363.3U CN205749147U (en) | 2016-05-04 | 2016-05-04 | A kind of power cable hot elongation test elongation measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205749147U true CN205749147U (en) | 2016-11-30 |
Family
ID=57372274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620389363.3U Expired - Fee Related CN205749147U (en) | 2016-05-04 | 2016-05-04 | A kind of power cable hot elongation test elongation measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205749147U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287107A (en) * | 2018-03-20 | 2018-07-17 | 国网山东省电力公司济宁供电公司 | A kind of hot elongation test holder and its application method |
| CN112213210A (en) * | 2020-09-28 | 2021-01-12 | 安徽徽宁电器仪表集团有限公司 | Thermal extension test detection equipment for tubular insulation test piece |
| CN117091972A (en) * | 2023-10-20 | 2023-11-21 | 中广核辐照技术有限公司 | Thermal extension test box for cable |
-
2016
- 2016-05-04 CN CN201620389363.3U patent/CN205749147U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287107A (en) * | 2018-03-20 | 2018-07-17 | 国网山东省电力公司济宁供电公司 | A kind of hot elongation test holder and its application method |
| CN108287107B (en) * | 2018-03-20 | 2020-10-16 | 国网山东省电力公司济宁供电公司 | Thermal extension test support and using method thereof |
| CN112213210A (en) * | 2020-09-28 | 2021-01-12 | 安徽徽宁电器仪表集团有限公司 | Thermal extension test detection equipment for tubular insulation test piece |
| CN112213210B (en) * | 2020-09-28 | 2023-11-14 | 安徽徽宁电器仪表集团有限公司 | Tubular insulation test piece thermal extension test detection equipment |
| CN117091972A (en) * | 2023-10-20 | 2023-11-21 | 中广核辐照技术有限公司 | Thermal extension test box for cable |
| CN117091972B (en) * | 2023-10-20 | 2023-12-22 | 中广核辐照技术有限公司 | Thermal extension test box for cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 |