CN203572880U - Device for measuring resistor temperature coefficient of overhead stranded wire - Google Patents
Device for measuring resistor temperature coefficient of overhead stranded wire Download PDFInfo
- Publication number
- CN203572880U CN203572880U CN201320774278.5U CN201320774278U CN203572880U CN 203572880 U CN203572880 U CN 203572880U CN 201320774278 U CN201320774278 U CN 201320774278U CN 203572880 U CN203572880 U CN 203572880U
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- China
- Prior art keywords
- cavity
- temperature
- machine oil
- well heater
- temperature sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000010721 machine oil Substances 0.000 claims abstract description 14
- 239000012212 insulator Substances 0.000 claims abstract description 8
- 239000004020 conductor Substances 0.000 claims description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 235000015927 pasta Nutrition 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 239000000523 sample Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 7
- 210000005056 cell body Anatomy 0.000 description 2
- 239000010724 circulating oil Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a device for measuring the resistor temperature coefficient of an overhead stranded wire. The device comprises a box body. A cavity which accommodates machine oil is arranged in the box body. The oil face of the machine oil is located at the middle upper part of the cavity. The cavity is connected with a circulating pump through a circulating pipeline. A clamping device is oppositely arranged at the middle part of the inner wall of the cavity. In the same axial direction, one end of the clamping device is connected with an insulator, a corrugated pipe, a digital force gauge and a loading rocking handle in turn. The corrugated pipe and the loading rocking handle are respectively in thread connection with the box body. A heater and a temperature sensor are arranged at the bottom of the cavity. The temperature sensor is connected with the heater through a temperature controller. The device controls the wire temperature through oil bath, so that the device can accurately measure the resistor temperature coefficient of the stranded wire.
Description
Technical field
The utility model relates to a kind of device of measuring overhead stranded conductor temperature-coefficient of electrical resistance, particularly a kind of measurement overhead stranded conductor temperature-coefficient of electrical resistance device of controlling temperature by oil bath.
Background technology
The mensuration of overhead stranded conductor temperature-coefficient of electrical resistance is by measuring the direct current resistance of same twisted wire under different temperatures, then the direct current resistance of different temperatures and gained is carried out that linear fit obtains.In current assay method, changing twisted wire temperature is mainly that the heat that adopts twisted pair wire loading current to produce improves conductor temperature, on the basis of this temperature, carry out overhead stranded conductor direct current resistance m easurem ent, for example application number is that 200880116536.2 patent names are " electric wire protection method and conductive wire protection apparatus ", and the method comprising the steps of: the electric current that applies that described load detected every the schedule time; With the detected temperature change applying in the described wire that electric current calculates per schedule time; Estimate the temperature of described wire; In the method, because wire is exposed in air, externally temperature and cross-ventilated impact, wire rises to the required heat of a certain temperature and is difficult to precisely controlled, often occur after wire-heated, the discrepant phenomenon of twisted wire ectonexine temperature exists, and has had a strong impact on the accuracy of the twisted wire temperature-coefficient of electrical resistance of measuring.
Utility model content
The purpose of this utility model is to provide a kind of device of measuring overhead stranded conductor temperature-coefficient of electrical resistance, and this installs by oil bath pilot temperature, can measure accurately twisted wire temperature-coefficient of electrical resistance.
Concrete scheme of the present utility model is:
A kind of device of measuring overhead stranded conductor temperature-coefficient of electrical resistance, comprise casing, in described casing, be provided with the cavity that holds machine oil, the pasta of described machine oil is positioned at the middle and upper part of described cavity, described cavity is connected with ebullator by circulation line, middle part at described cavity inner wall is provided with clamp device relatively, in same axially one end of the above clamp device, be connected with in turn insulator, corrugated tube, numeral tautness meter and loading rocking handle, described corrugated tube and loading rocking handle are threaded with described casing respectively, the bottom of described cavity is provided with well heater and temperature sensor, described temperature sensor is connected by temperature controller with described well heater.
Adopt technique scheme, technique effect of the present utility model has:
(1) twisted wire is connected on by hook connecting on the insulator of casing both sides, applies pulling force, and arrange one deck insulator at cavity bottom by loading rocking handle twisted pair wire, guarantees the integral insulation of casing.
(2) in casing, arrange circulating oil pump and circulating oil path pipe, by the mobility to machine oil, guarantee the average stable of oil temperature.
(3) in inside cavity, arrange platinum resistance temperature sensor, can measure the temperature of zones of different in cell body.
(4) by the mode of heating machine oil, heat the twisted wire being immersed in wherein and reach stationary temperature.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model is measured overhead stranded conductor temperature-coefficient of electrical resistance device.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, a kind of device of measuring overhead stranded conductor temperature-coefficient of electrical resistance, comprises casing 1, described casing 1 is steel frame construction, in it, be provided with the cavity 2 that holds machine oil, the pasta of described machine oil is positioned at the middle and upper part of described cavity 2, and the boiling point of this machine oil is 200-400 ℃, described cavity 2 is connected with ebullator 8 by circulation line, middle part at described cavity inner wall is provided with clamp device 3 relatively, described clamp device 3 is preferably hook structure, in same axially one end of the above clamp device 3, be connected with in turn insulator 4, corrugated tube 5, numeral tautness meter 6 and loading rocking handle 7, described corrugated tube 5 and loading rocking handle 7 are threaded with described casing respectively, the bottom of described cavity is provided with well heater and temperature sensor, described well heater is preferably by Ni-Cr stainless steel to be made, described temperature sensor is connected by temperature controller 9 with described well heater.
On the basis of above-described embodiment, described cavity 2 bottoms are provided with one deck insulator, guarantee the integral insulation in cavity.
On the basis of above-described embodiment, in two ends and the centre of described cavity 2, be respectively equipped with platinum resistance temperature sensor, totally 6, wherein, apart from each two, cavity 2 0.5m place, end, 2 of casing middles, sensor is screwed below liquid level, measures the temperature of zones of different in cell body.
On the basis of above-described embodiment, described temperature controller 9 comprises control mainboard, described control mainboard is provided with button and LED display module, and described button is connected with the processor input end being positioned on control mainboard, and the output terminal of processor is connected with LED display module; The input end of processor is connected with described temperature-sensing probe, and the output terminal of processor is connected with described well heater.
A measuring method of using measurement device overhead stranded conductor temperature-coefficient of electrical resistance as above, described method comprises the steps:
1) two ends of twisted wire are fixed with clamp device respectively;
2) rotate loading rocking handle and described twisted wire is applied to the pulling force of 2-5KN, control the sag of twisted wire;
3) by well heater, machine oil is heated, oil temperature is controlled to 9～200 ℃, start ebullator machine oil is flowed at circulation line, guarantee that oil temperature fluctuation is for ± 0.1 ℃;
4) measure the direct current resistance of described twisted wire under different temperatures, obtain temperature-coefficient of electrical resistance.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not depart from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (8)
1. a device of measuring overhead stranded conductor temperature-coefficient of electrical resistance, it is characterized in that, comprise casing (1), in described casing (1), be provided with the cavity (2) that holds machine oil, the pasta of described machine oil is positioned at the middle and upper part of described cavity (2), described cavity (2) is connected with ebullator (8) by circulation line, at the middle part of described cavity inner wall, be relatively provided with clamp device (3), in same axially one end of the above clamp device (3), be connected with in turn insulator (4), corrugated tube (5), numeral tautness meter (6) and loading rocking handle (7), described corrugated tube (5) and loading rocking handle (7) are threaded with described casing respectively, the bottom of described cavity is provided with well heater and temperature sensor, described temperature sensor is connected by temperature controller (9) with described well heater.
2. device as claimed in claim 1, is characterized in that, the boiling point of described machine oil is 200-400 ℃.
3. device as claimed in claim 1, is characterized in that, described casing (1) is steel frame construction.
4. device as claimed in claim 1, is characterized in that, described cavity (2) bottom is provided with one deck insulator.
5. device as claimed in claim 1, is characterized in that, in two ends and the centre of described cavity (2), is respectively equipped with platinum resistance temperature sensor.
6. device as claimed in claim 1, is characterized in that, described well heater is made by Ni-Cr stainless steel.
7. device as claimed in claim 1, it is characterized in that, described temperature controller (9) comprises control mainboard, and described control mainboard is provided with button and LED display module, described button is connected with the processor input end being positioned on control mainboard, and the output terminal of processor is connected with LED display module; The input end of processor is connected with described temperature-sensing probe, and the output terminal of processor is connected with described well heater.
8. device as claimed in claim 1, is characterized in that, described clamp device (3) is hook structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320774278.5U CN203572880U (en) | 2013-11-28 | 2013-11-28 | Device for measuring resistor temperature coefficient of overhead stranded wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320774278.5U CN203572880U (en) | 2013-11-28 | 2013-11-28 | Device for measuring resistor temperature coefficient of overhead stranded wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203572880U true CN203572880U (en) | 2014-04-30 |
Family
ID=50540607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320774278.5U Expired - Lifetime CN203572880U (en) | 2013-11-28 | 2013-11-28 | Device for measuring resistor temperature coefficient of overhead stranded wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203572880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604996A (en) * | 2013-11-28 | 2014-02-26 | 国家电网公司 | Device and method for measuring overhead stranded wire resistance temperature coefficient |
-
2013
- 2013-11-28 CN CN201320774278.5U patent/CN203572880U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604996A (en) * | 2013-11-28 | 2014-02-26 | 国家电网公司 | Device and method for measuring overhead stranded wire resistance temperature coefficient |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
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| CX01 | Expiry of patent term |