CN105067473A - Method for measuring operating insulator contamination degree - Google Patents
Method for measuring operating insulator contamination degree Download PDFInfo
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- CN105067473A CN105067473A CN201510460501.2A CN201510460501A CN105067473A CN 105067473 A CN105067473 A CN 105067473A CN 201510460501 A CN201510460501 A CN 201510460501A CN 105067473 A CN105067473 A CN 105067473A
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Abstract
The invention discloses a method for measuring operating insulator contamination degree. The method includes: using alcohol containing absorbent cotton to scrub the foulant on the upper surface and lower surface of an insulator; determining the amount of distilled water or deionized water for washing the absorbent cotton, performing water equipartition to wash the absorbent cotton so as to reduce absorbent cotton foulant residue, and placing the foul solution in a foul solution memory; fully stirring the foul solution, and controlling the stirring time at 10min-30min; drying and weighing the filter paper used in filtration; filtering the foul solution with a filter unit, taking the filtered clear solution, and measuring the electric conductivity of the filtered clear solution to obtain the equivalent salt deposit density of the insulator; drying the filter paper, and weighing the dried filter paper, thus obtaining the insulator non-soluble deposit density. The method is simple, and employs the alcohol containing absorbent cotton to sample the insulator surface foulant. The absorbent cotton is washed repeatedly by water to reduce the absorbent cotton foulant residue, thus ensuring measurement precision. A vacuum pump is utilized to increase the foul solution filtration rate, thereby greatly reducing the foulant filtration time.
Description
Technical field
The invention belongs to transmission line of electricity and run detection technique field, be specifically related to a kind of operation insulator dirty degree measuring method.
Background technology
The overall performance of situation on actual motion insulator is gathered in filth very important impact, which determine the resistance to pollution flashover performance running insulator on the one hand, it directly affects generation and the development of the material aging phenomenon such as RTV coating and composite insulator tracking on the other hand, is one of important indicator of reflection actual motion insulator runnability.
At present, also do not have both at home and abroad to improve the effective ways running insulator dirty degree measuring speed.The method of sampling of existing filth uses distilled water or deionized water to clean, and the method is not easy to the filth sampling carrying out running insulator.Existing method utilizes natural filtration simultaneously, and filtration time is longer.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of insulator dirty degree measuring method of running to put, method is simple, and efficiency is high.First adopt and containing spirituous absorbent cotton, pollution severity of insulators is sampled; Then with a certain amount of moisture, repeatedly cleaning and degreasing is cotton, reduces in absorbent cotton filthy residual, thus the accuracy that guarantee is measured.Utilize vacuum pump to improve soiling solution filter velocity in device, thus greatly reduce filthy filtration time, thus improve operation insulator dirty degree measurement efficiency.
For achieving the above object, the present invention adopts following technical proposals:
A kind of operation insulator dirty degree measuring method, comprises the following steps:
Step (1): adopt containing spirituous absorbent cotton from dunghill the upper and lower surface scouring of insulator;
Step (2): determine absorbent cotton cleaning distilled water or amount of deionized water, by the absorbent cotton in point cleaning steps (1) such as water, reduces absorbent cotton filth residual, and soiling solution is placed in soiling solution memory;
Step (3): fully stir soiling solution, controls mixing time at 10min-30min; After stirring, soiling solution is left standstill 3h-12h;
Step (4): carry out drying to filtering the filter paper used, weigh;
Step (5): utilize the soiling solution of filtration unit to step (3) to filter, getting the cleaner liquid excessively filtering and obtain, measuring cleaner liquid conductivity, by calculating the equivalent salt density of insulator;
Step (6): the filter paper after filtering step (5) is dried, weighs to filter paper after oven dry, calculates insulator equivalent ash close.
Should ensure in described step (1) that pollution severity of insulators thing cleans the time is 5min-10min, ensures that indissoluble filth has enough dissolution times in alcohol.
In described step (2), the water consumption of distilled water or deionized water is between 300ml ~ 600ml.
In described step (3), soiling solution time of repose is at 3h ~ 12h.
In described step (4), filter paper aperture is between 10 ~ 20 μm.
The drying box temperature of drying filter paper in described step (6) is arranged between 90 DEG C ~ 140 DEG C, and drying time is at 30min-60min.
In described step (5), filtration unit comprises bottle,suction, and described bottle,suction is connected with vacuum pump by exhaust tube; Described bottle,suction top is connected with Buchner funnel, and junction is provided with O-ring seal; The sidewall of described Buchner funnel is covered with filter paper.
Described exhaust tube is connected to the bleeding point place of vacuum pump, and described vacuum pump is also provided with gas outlet.
The described vacuum pump speed of exhaust controls at 0.1 ~ 0.4m
3between/h.Speed is crossed senior general and is caused soiling solution to filter thoroughly, affects the close measuring accuracy of insulator equivalent ash; Speed is crossed young pathbreaker and is caused filter velocity excessively slow, reduces and measures efficiency.
Described step (5) is crossed cleaner liquid sampling amount and is no less than 10ml.
Beneficial effect of the present invention is:
The present invention's spirituosity absorbent cotton is respectively from dunghill the upper and lower surface scouring of insulator, and a certain amount of distilled water of decile or deionized water repeatedly cleaning and degreasing are cotton, and the filth reduced in absorbent cotton remains, and soiling solution is placed in soiling solution memory.Utilize vacuum pump to accelerate filthy filter velocity, get a certain amount of cleaner liquid excessively simultaneously, measure the equivalent salt density of insulator; Then filtered residue dried, weigh, obtain insulator equivalent ash close.Insulator surface indissoluble is dissolved filthy by alcohol, repeatedly cleaning and degreasing is cotton for a certain amount of distilled water of decile or deionized water simultaneously, and utilize vacuum pump to accelerate filthy filter velocity, the close measuring accuracy of insulator equivalent salt density ash can be improved, the close measuring speed of insulator equivalent salt density ash can be improved again; Measuring accuracy improves about 5% ~ 10%, and the 30min that filtration time filters from nature (vacuum pump less) has shortened to 2min; The structure of filtration unit is simple, reasonable in design simultaneously, can greatly improve soiling solution filter velocity, greatly shortens the pollution measurement time, improves and measures efficiency.
Accompanying drawing explanation
Fig. 1 is that the present invention runs insulator dirty degree measuring method process flow diagram;
Fig. 2 is the filtration unit schematic diagram that the present invention runs insulator dirty degree measuring method;
In figure, 1 is filter paper, and 2 is Buchner funnel, and 3 is O-ring seal, and 4 is bottle,suction, and 5 is exhaust tube, and 6 is vacuum pump, and 7 is vacuum pump bleeding point, and 8 is vacuum pump gas outlet, and 9 is soiling solution, and 10 was cleaner liquid.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, run insulator dirty degree accurate measurement method, step is:
1) adopt containing spirituous absorbent cotton from dunghill the upper and lower surface scouring of insulator; Should ensure that pollution severity of insulators thing cleans the time, ensure that indissoluble filth has enough dissolution times in alcohol.
2) determine absorbent cotton cleaning distilled water or amount of deionized water, by water decile (general point two parts) cleaning step 1) in absorbent cotton, reduce absorbent cotton filth residual, and soiling solution be placed in soiling solution memory; The water consumption of distilled water or deionized water should be determined according to absorbent cotton soilability, generally between 300ml ~ 600ml.
3) fully stir soiling solution, control mixing time at about 10min; After stirring, soiling solution is left standstill more than 3h.
4) carry out drying to filtering the filter paper used, weigh; Filter paper aperture is between 10 ~ 20 μm.
5) utilize the soiling solution of the filtration unit shown in Fig. 2 to step 3 to filter, getting a certain amount of cleaner liquid excessively, measuring clear liquid conductivity, by calculating the equivalent salt density of insulator; The filtration unit vacuum pump speed of exhaust is utilized to control at 0.1 ~ 0.4m
3between/h.Speed is crossed senior general and is caused soiling solution to filter thoroughly, affects the close measuring accuracy of insulator equivalent ash; Speed is crossed young pathbreaker and is caused filter velocity excessively slow, reduces and measures efficiency.Cross cleaner liquid sampling amount and should be no less than 10ml.
6) filter paper after filtering step 5 is dried, and arranges drying box temperature between 90 DEG C ~ 140 DEG C, controls drying time at more than 30min; Filter paper after oven dry is weighed, calculates insulator equivalent ash close.
As shown in Figure 2, be the filtration unit for accelerating soiling solution filtering rate, comprise bottle,suction 4, bottle,suction 4 is connected with vacuum pump 6 by exhaust tube 5, and be connected to vacuum pump bleeding point 7 place, vacuum pump 6 is also provided with vacuum pump gas outlet 8; Bottle,suction 4 top is connected with Buchner funnel 2, and junction is provided with O-ring seal 3; The sidewall of Buchner funnel 2 is provided with filter paper 1.Soiling solution 9 is put in Buchner funnel 2, filters and obtained cleaner liquid 10.This filtering device designs is reasonable, and structure is simple, can greatly improve soiling solution filter velocity, greatly shortens the pollution measurement time, improves and measures efficiency.
Embodiment 1: the pollution degree scribbling the bell-shaped porcelain insulator of RTV coating is measured:
1) sample:
Utilize alcoholic absorbent cotton to clean respectively to insulator point upper and lower surface, the scouring time is 10min, thus ensures that indissoluble filth has enough dissolution times in alcohol.Seal up for safekeeping putting into sample bag containing filthy absorbent cotton, in order to equivalent salt density ash density test.
2) clean:
Remove ionized water 500ml (concrete water consumption can be determined according to absorbent cotton soilability), with the first time cleaning of 200ml deionized water containing filthy absorbent cotton, absorbent cotton is wrung out; Use 200ml deionized water second time cleaning and degreasing cotton again, and the absorbent cotton after cleaning is wrung out.With 50ml deionized water first time clean container, then with remaining 50ml deionized water clean container for the second time.This 500ml cleaning fluid is placed in beaker, now should notes not losing wiping scouring water, namely before and after dunghill sampling, the water yield is without large change.Abundant stirring soiling solution, mixing time is 15min; After stirring, soiling solution is left standstill 6h.
3) equivalent salt density is measured:
The soiling solution fully dissolved is filtered, gets clear liquid 15ml, measure its conductivity and temperature, the equivalent salt density (ESDD) running insulator can be calculated.
4) equivalent grey close measurement:
Arranging drying box temperature is 110 DEG C, and drying time is 40min, weighs, then filter soiling solution dried filter paper.Utilize vacuum pump to accelerate soiling solution filter velocity, controlling the vacuum pump speed of exhaust is 0.3m
3/ h.Dry the filter paper after filtering, arranging drying box temperature is 110 DEG C, and drying time is 40min, weighs to dried filter paper, calculates insulator equivalent ash close.
Embodiment 2: the pollution degree of size umbellate form composite insulator is measured:
1) sample:
Utilize alcoholic absorbent cotton to clean respectively to insulator point upper and lower surface, the scouring time is 5min, thus ensures that indissoluble filth has enough dissolution times in alcohol.Seal up for safekeeping putting into sample bag containing filthy absorbent cotton, in order to equivalent salt density ash density test.
2) clean:
Remove ionized water 300ml (concrete water consumption can be determined according to absorbent cotton soilability), with the first time cleaning of 125ml deionized water containing filthy absorbent cotton, absorbent cotton is wrung out; Use 125ml deionized water second time cleaning and degreasing cotton again, and the absorbent cotton after cleaning is wrung out.With 25ml deionized water first time clean container, then with remaining 25ml deionized water clean container for the second time.This 300ml cleaning fluid is placed in beaker, now should notes not losing wiping scouring water, namely before and after dunghill sampling, the water yield is without large change.Abundant stirring soiling solution, mixing time is 10min; After stirring, soiling solution is left standstill 4h.
3) equivalent salt density is measured:
The soiling solution fully dissolved is filtered, gets clear liquid 15ml, measure its conductivity and temperature, the equivalent salt density (ESDD) running insulator can be calculated.
4) equivalent grey close measurement:
Arranging drying box temperature is 90 DEG C, and drying time is 30min, weighs, then filter soiling solution dried filter paper.Utilize vacuum pump to accelerate soiling solution filter velocity, controlling the vacuum pump speed of exhaust is 0.2m
3/ h.Dry the filter paper after filtering, arranging drying box temperature is 90 DEG C, and drying time is 30min, weighs to dried filter paper, calculates insulator equivalent ash close.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. run an insulator dirty degree measuring method, it is characterized in that, comprise the following steps:
Step (1): adopt containing spirituous absorbent cotton from dunghill the upper and lower surface scouring of insulator;
Step (2): determine absorbent cotton cleaning distilled water or amount of deionized water, by the absorbent cotton in point cleaning steps (1) such as water, reduces absorbent cotton filth residual, and soiling solution is placed in soiling solution memory;
Step (3): fully stir soiling solution, controls mixing time at 10min-30min; After stirring, soiling solution is left standstill 3h-12h;
Step (4): carry out drying to filtering the filter paper used, weigh;
Step (5): utilize the soiling solution of filtration unit to step (3) to filter, getting the cleaner liquid excessively filtering and obtain, measuring cleaner liquid conductivity, by calculating the equivalent salt density of insulator;
Step (6): the filter paper after filtering step (5) is dried, weighs to filter paper after oven dry, calculates insulator equivalent ash close.
2. operation insulator dirty degree measuring method as claimed in claim 1, is characterized in that, should ensure in described step (1) that pollution severity of insulators thing cleans the time is 5min-10min.
3. operation insulator dirty degree measuring method as claimed in claim 1, it is characterized in that, in described step (2), the water consumption of distilled water or deionized water is between 300ml ~ 600ml.
4. operation insulator dirty degree measuring method as claimed in claim 1, it is characterized in that, in described step (3), soiling solution time of repose is at 3h ~ 12h.
5. operation insulator dirty degree measuring method as claimed in claim 1, it is characterized in that, in described step (4), filter paper aperture is between 10 ~ 20 μm.
6. operation insulator dirty degree measuring method as claimed in claim 1, it is characterized in that, the drying box temperature of drying filter paper in described step (6) is arranged between 90 DEG C ~ 140 DEG C, and drying time is at 30min-60min.
7. operation insulator dirty degree measuring method as claimed in claim 1, it is characterized in that, in described step (5), filtration unit comprises bottle,suction, and described bottle,suction is connected with vacuum pump by exhaust tube; Described bottle,suction top is connected with Buchner funnel, and junction is provided with O-ring seal; The sidewall of described Buchner funnel is covered with filter paper.
8. operation insulator dirty degree measuring method as claimed in claim 7, it is characterized in that, described exhaust tube is connected to the bleeding point place of vacuum pump, and described vacuum pump is also provided with gas outlet.
9. operation insulator dirty degree measuring method as claimed in claim 7, it is characterized in that, the described vacuum pump speed of exhaust controls at 0.1 ~ 0.4m
3between/h.
10. operation insulator dirty degree measuring method as claimed in claim 1, it is characterized in that, described step (5) is crossed cleaner liquid sampling amount and is no less than 10ml.
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| CN201510460501.2A CN105067473A (en) | 2015-07-30 | 2015-07-30 | Method for measuring operating insulator contamination degree |
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| CN201510460501.2A CN105067473A (en) | 2015-07-30 | 2015-07-30 | Method for measuring operating insulator contamination degree |
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| CN105842107A (en) * | 2016-03-17 | 2016-08-10 | 东南大学 | Insulator surface accumulated dirt cleaning method |
| CN106932612A (en) * | 2017-02-27 | 2017-07-07 | 清华大学 | Saline fog method test base |
| CN107219266A (en) * | 2017-05-17 | 2017-09-29 | 国网天津市电力公司 | A kind of quick equivalent salt density, grey close detection means |
| CN108414390A (en) * | 2018-02-26 | 2018-08-17 | 广东电网有限责任公司江门供电局 | A kind of insulation cleaning agent decontamination is from the performance test methods that escape |
| CN108732060A (en) * | 2018-04-28 | 2018-11-02 | 国网山东省电力公司电力科学研究院 | A method of measuring insulator dirty degree |
| CN110426324A (en) * | 2019-08-27 | 2019-11-08 | 南京大学 | A kind of measuring method of the sub- surface hydrophobicity migration of polyolefin insulation |
| CN114166895A (en) * | 2021-12-03 | 2022-03-11 | 国网山西省电力公司电力科学研究院 | Method for measuring insulation resistivity and representing dirt degree grade of outer insulation surface |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842107A (en) * | 2016-03-17 | 2016-08-10 | 东南大学 | Insulator surface accumulated dirt cleaning method |
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| CN106932612A (en) * | 2017-02-27 | 2017-07-07 | 清华大学 | Saline fog method test base |
| CN107219266A (en) * | 2017-05-17 | 2017-09-29 | 国网天津市电力公司 | A kind of quick equivalent salt density, grey close detection means |
| CN108414390A (en) * | 2018-02-26 | 2018-08-17 | 广东电网有限责任公司江门供电局 | A kind of insulation cleaning agent decontamination is from the performance test methods that escape |
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| CN110426324A (en) * | 2019-08-27 | 2019-11-08 | 南京大学 | A kind of measuring method of the sub- surface hydrophobicity migration of polyolefin insulation |
| CN110426324B (en) * | 2019-08-27 | 2021-06-04 | 南京大学 | Method for measuring surface hydrophobic migration of polyolefin insulator |
| CN114166895A (en) * | 2021-12-03 | 2022-03-11 | 国网山西省电力公司电力科学研究院 | Method for measuring insulation resistivity and representing dirt degree grade of outer insulation surface |
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