CN203894343U - Liquid automatic dripping device for composite insulator hydrophobicity detection and aging assessment - Google Patents
Liquid automatic dripping device for composite insulator hydrophobicity detection and aging assessment Download PDFInfo
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- CN203894343U CN203894343U CN201420156647.9U CN201420156647U CN203894343U CN 203894343 U CN203894343 U CN 203894343U CN 201420156647 U CN201420156647 U CN 201420156647U CN 203894343 U CN203894343 U CN 203894343U
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Abstract
The utility model provides a liquid automatic dripping device for composite insulator hydrophobicity detection and aging assessment based on liquid drop discharge ultraviolet optical characteristics. The liquid automatic dripping device mainly comprises a solution storage container, a miniature water pump, a microliter meter, a liquid level sensor, a water drawing control valve and a water dripping control valve. The liquid automatic dripping device can be used for early stage detection and diagnosis of hydrophobicity decrease factors causing external insulation flashover accidents, raises resolution and accuracy of composite insulator surface hydrophobicity detection greatly, and guarantees continuity and reliability of power supply and power distribution of an electric power system effectively.
Description
Technical field
The utility model relates to the pick-up unit of electric system power transmission and transformation equipment outer insulation, and particularly a kind of Hydrophobicity of Composite Insulator based on drop electric discharge ultraviolet optics feature detects and Aging Assessment liquid automatic drip dropping control device.
Background technology
Composite insulator, with its superior electric property and higher economic benefit, has obtained increasingly extensive application in electric system power transmission and transforming equipment, also becomes the key factor that affects power network safety operation simultaneously.Compared with traditional porcelain insulator, operating composite insulator has generally shown catabiosis in various degree, causes hydrophobic nature to decline and affects insulating property.Therefore, the hydrophobic nature of carrying out composite insulator detects and Aging Assessment, is to ensure electric system power transmission and transformation equipment outer insulation reliability and improve one of important channel of safe operation of power system.
Current, aspect Hydrophobicity of Composite Insulator detection and Aging Assessment, mainly adopt with the following method both at home and abroad:
(1) Static Contact horn cupping
Static Contact horn cupping adopts microsyringe that drop is placed in to insulator surface, characterize hydrophobic nature by measuring the contact angle forming between drop edge and insulator surface, although there is higher measuring accuracy, but need strict test environment, and ignore and the closely-related surperficial drop dynamic change of actual motion composite insulator, cannot effectively reflect the operation conditions of composite insulator.
(2) water spray stage method
Water spray stage method is proposed by power transmission and distribution research institute of Sweden (STRI), drops in the distribution situation of insulator surface by observing spray water, and contrast grading criteria and normal pictures adopt HC grade to characterize insulator hydrophobicity.The method is simple to operation directly perceived, but comparatively coarse to hydrophobic nature classification, and grade classification mainly relies on operating personnel's naked eyes to pass judgment on, and degree of accuracy is poor.
(3) leakage current method
Leakage current moves all the time through insulator, although can reflect insulator surface behavioral characteristics, and be convenient to realize online detection, but because the leakage current time domain of dissimilar insulator under varying environment operation changes the randomness and the dispersiveness that exist greatly, lack at present unified define method and evaluation criteria.
In sum, due to the complicacy of composite insulator material structure and influence factor thereof, detect with Aging Assessment still in the development and perfection stage for Hydrophobicity of Composite Insulator, the methods such as the static contact angle, HC grade and the leakage current that adopt are all existing shortcoming in varying degrees with not enough.
Utility model content
The defect or the deficiency that exist for prior art, the purpose of this utility model is to provide a kind of Hydrophobicity of Composite Insulator based on drop electric discharge ultraviolet optics feature to detect and Aging Assessment liquid automatic drip dropping control device, its hydrophobic nature dampening factor can be used in causing external insulation flashover accident carries out early detection and diagnosis, greatly improved resolution and accuracy that composite insulator surface hydrophobicity detects, effective guarantee continuity and the reliability of electric system for distribution.
For achieving the above object, the utility model adopts following technical proposals: a kind of Hydrophobicity of Composite Insulator based on drop electric discharge ultraviolet optics feature detects and Aging Assessment liquid automatic drip dropping control device, described liquid automatic drip dropping control device mainly comprises solution reservoir vessel, micro pump, microlitre meter, liquid level sensor, draw water operation valve and the operation valve that drips, and realizes and treats the controlled detection drop of test samples surface placement size, position and filthy degree; Concrete, described microlitre liquid drips unit automatically, its solution reservoir vessel is connected with micro pump by pipeline, micro pump is connected with microlitre meter by pipeline, microlitre meter is connected with the water dropping openings that below arranges by pipeline, the operation valve that draws water is set on the associated line circuit of micro pump and microlitre meter, the operation valve that drips is set on the associated line circuit of microlitre meter and water dropping openings, in microlitre meter, liquid level sensor is set; Liquid level sensor is connected with the signal input part of controller, and micro pump, the operation valve that draws water are connected with the signal output part of controller with the operation valve that drips.
Compared with existing detection technique, by application of the present utility model, can make Hydrophobicity of Composite Insulator detection and Aging Assessment safer, rapid, accurate, be convenient to staff and operate diagnosis, concrete beneficial effect is rapidly, precisely to control gradation for surface pollution, droplet size and the drippage position of detecting drop, be convenient to form the detection drop of standard, reduced the detection error that drop error causes, improved the comparability and the accuracy that detect.
Brief description of the drawings
Fig. 1 is liquid microlitre automatic drip dropping control device schematic diagram of the present utility model.Symbol in Fig. 1 represents: 9-detects solution reservoir vessel; 10-micro pump; 11-microlitre meter; 12-liquid level sensor; The 13-operation valve that draws water; The 14-operation valve that drips; 15-water dropping openings.
Fig. 2 is for to coordinate practical structure of the detecting device schematic diagram with liquid microlitre automatic drip dropping control device of the present utility model.Symbol in Fig. 2 represents: 1-sample to be detected; 2-epoxy insulation support; 3-is adjustable semicircle stainless steel high-field electrode; 4-is adjustable plate shaped stainless steel ground electrode; 5-ac high voltage source; 6-100k Ω protective resistance; 7-day, blind type ultraviolet imagery was popped one's head in; 8-PC machine.
Embodiment
Describe content of the present utility model in detail below by specific embodiment.
As shown in Figure 1-2, fundamental purpose of the present utility model is to realize the visual measuring ability of Hydrophobicity of Composite Insulator based on drop electric discharge ultraviolet optics feature, realizes the rapid evaluation aging to composite insulator.Liquid automatic drip dropping control device of the present utility model mainly comprises solution reservoir vessel 9, micro pump 10, microlitre meter 11, liquid level sensor 12, draw water operation valve 13 and the operation valve 14 that drips, and realizes and treats the controlled detection drop of test samples 1 surface placement size, position and filthy degree; Concrete, described microlitre liquid automatic drip dropping control device, its solution reservoir vessel 9 is connected with micro pump 10 by pipeline, micro pump 10 is connected with microlitre meter 11 by pipeline, microlitre meter 11 is connected with the water dropping openings 15 that below arranges by pipeline, the operation valve 13 that draws water is set on the associated line circuit of micro pump 10 and microlitre meter 11, the operation valve 14 that drips is set on the associated line circuit of microlitre meter 11 and water dropping openings 15, at the interior liquid level sensor 12 that arranges of microlitre meter 11; Liquid level sensor 12 is connected with the signal input part of controller (not shown), and micro pump 10, the operation valve 13 that draws water are connected with the signal output part of controller with the operation valve 14 that drips.Concrete detection appraisal procedure is as follows:
Be placed on epoxy insulation support 2 parallel sample 1 to be detected, can be with certain pressure extrusion at specimen surface by the mechanical spiral device adjustable semicircle stainless steel high-field electrode 3 of adjusting and adjustable plate shaped stainless steel ground electrode 4;
On adjustable semicircle stainless steel high-field electrode 3, applying peak value by ac high voltage source 5 is 30kV alternating voltage;
Connect PC 8 and a day blind type ultraviolet imagery 7 measurement mechanisms such as grade of popping one's head in, and prepare by PC 8 record electric discharge ultraviolet image automatically;
Micro pump 10 is by Electric Machine Control, Control is passed through in the unlatching of motor, by the unlatching of draw water operation valve 13 and the operation valve 14 that drips, the solution of certain volume is drawn into microlitre meter 11 and drops to specimen surface by water dropping openings 15 from detecting solution reservoir vessel 9; Concrete, the operation valve 13 that draws water is controlled by liquid level sensor 12 with the switching of the operation valve 14 that drips, when liquid level is lower than detecting when required droplet size, signal is transferred to controller by liquid level sensor 12, the controller control operation valve 13 that draws water is opened, micro pump 10 is started working, and the operation valve 14 that drips is closed; In the time that liquid level reaches the required droplet size of detection, the operation valve 13 that draws water is closed, and micro pump 10 quits work, and the operation valve 14 that drips is opened, and completes drop drippage.
By PC 8 by day blind type ultraviolet imagery probe 7 ultraviolet images that record specimen surface electric discharge convert digital picture to, extract the characteristic parameter of electric discharge ultraviolet image;
According to Measuring Time and the setting of measuring number of times, measurement mechanism is closed in timing.
Claims (1)
1. Hydrophobicity of Composite Insulator detects and an Aging Assessment liquid automatic drip dropping control device, it is characterized in that: described liquid automatic drip dropping control device mainly comprises solution reservoir vessel, micro pump, microlitre meter, liquid level sensor, operation valve and the operation valve that drips draw water; Described solution reservoir vessel is connected with micro pump by pipeline, micro pump is connected with microlitre meter by pipeline, microlitre meter is connected with the water dropping openings that below arranges by pipeline, the operation valve that draws water is set on the associated line circuit of micro pump and microlitre meter, the operation valve that drips is set on the associated line circuit of microlitre meter and water dropping openings, in microlitre meter, liquid level sensor is set; Liquid level sensor is connected with the signal input part of controller, and micro pump, the operation valve that draws water are connected with the signal output part of controller with the operation valve that drips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420156647.9U CN203894343U (en) | 2014-03-31 | 2014-03-31 | Liquid automatic dripping device for composite insulator hydrophobicity detection and aging assessment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420156647.9U CN203894343U (en) | 2014-03-31 | 2014-03-31 | Liquid automatic dripping device for composite insulator hydrophobicity detection and aging assessment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203894343U true CN203894343U (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420156647.9U Expired - Fee Related CN203894343U (en) | 2014-03-31 | 2014-03-31 | Liquid automatic dripping device for composite insulator hydrophobicity detection and aging assessment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203894343U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797036A (en) * | 2017-10-19 | 2018-03-13 | 广东电网有限责任公司电力科学研究院 | A kind of method based on high voltage and the evaluating combined insulator interface performance of salting liquid |
-
2014
- 2014-03-31 CN CN201420156647.9U patent/CN203894343U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797036A (en) * | 2017-10-19 | 2018-03-13 | 广东电网有限责任公司电力科学研究院 | A kind of method based on high voltage and the evaluating combined insulator interface performance of salting liquid |
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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 |
Granted publication date: 20141022 Termination date: 20150331 |
|
| EXPY | Termination of patent right or utility model |