CN105067473A - Method for measuring operating insulator contamination degree - Google Patents
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- 239000012212 insulator Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000011109 contamination Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229920000742 Cotton Polymers 0.000 claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- 239000008367 deionised water Substances 0.000 claims description 19
- 229910021641 deionized water Inorganic materials 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 11
- 239000012153 distilled water Substances 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 14
- 238000005201 scrubbing Methods 0.000 description 6
- 238000001739 density measurement Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
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Abstract
本发明公开了一种运行绝缘子污秽度测量方法，采用含有酒精的脱脂棉从绝缘子的上、下表面擦洗下污秽物；确定脱脂棉清洗用蒸馏水或去离子水量，将水等分清洗脱脂棉，降低脱脂棉污秽残留，并将污液置于污液存贮器；充分搅拌污液，控制搅拌时间在10min-30min；对过滤所使用的滤纸进行干燥、称重；利用过滤装置对污液进行过滤，取过滤清液，测量过滤清液电导率，得出绝缘子的等值盐密；对滤纸进行烘干，对烘干后滤纸进行称重，得出绝缘子等值灰密。方法简单，采用含有酒精的脱脂棉对绝缘子表面污秽进行采样。水分多次清洗脱脂棉，降低脱脂棉污秽残留，从而保证测量的精确性。利用真空泵提高污液过滤速度，从而大大减小污秽过滤时间。
The invention discloses a method for measuring the pollution degree of an operating insulator. The absorbent cotton containing alcohol is used to wipe the dirt from the upper and lower surfaces of the insulator; Residue, and put the dirty liquid in the dirty liquid storage; fully stir the dirty liquid, control the stirring time at 10min-30min; dry and weigh the filter paper used for filtration; use the filter device to filter the dirty liquid, take the filter Clear liquid, measure the conductivity of the filtered clear liquid to obtain the equivalent salt density of the insulator; dry the filter paper, weigh the dried filter paper, and obtain the equivalent gray density of the insulator. The method is simple, using absorbent cotton containing alcohol to sample the contamination on the surface of the insulator. Water washes the absorbent cotton many times to reduce the dirt residue of the absorbent cotton, thus ensuring the accuracy of the measurement. The vacuum pump is used to increase the filtration speed of dirty liquid, thereby greatly reducing the time of dirty filtration.
Description
技术领域technical field
本发明属于输电线路运行检测技术领域，具体涉及一种运行绝缘子污秽度测量方法。The invention belongs to the technical field of transmission line operation detection, and in particular relates to a method for measuring the pollution degree of an operating insulator.
背景技术Background technique
污秽积聚状况对实际运行绝缘子的整体性能有着十分重要的影响，一方面它决定了运行绝缘子的耐污闪性能，另一方面它直接影响RTV涂料及复合绝缘子漏电起痕与电蚀损等材料老化现象的发生与发展，是反映实际运行绝缘子运行性能的重要指标之一。Pollution accumulation has a very important impact on the overall performance of insulators in actual operation. On the one hand, it determines the pollution flashover resistance of insulators in operation. On the other hand, it directly affects the aging of materials such as RTV coatings and composite insulators, such as tracking and electrical corrosion. The occurrence and development of the phenomenon is one of the important indicators reflecting the performance of the insulator in actual operation.
目前，国内外还没有能够提高运行绝缘子污秽度测量速度的有效方法。现有污秽的采样方法使用蒸馏水或去离子水进行擦洗，该方法不便于进行运行绝缘子的污秽采样。同时现有的方法是利用自然过滤，过滤时间较长。At present, there is no effective method at home and abroad to improve the measurement speed of the pollution degree of insulators in operation. The existing dirty sampling method uses distilled water or deionized water for scrubbing, which is not convenient for dirty sampling of running insulators. At the same time, the existing method is to utilize natural filtering, and the filtering time is longer.
发明内容Contents of the invention
本发明的目的是为克服上述现有技术的不足，提供一种运行绝缘子污秽度测量方法置，方法简单，效率高。首先采用含有酒精的脱脂棉对绝缘子表面污秽进行采样；然后用一定量的水分多次清洗脱脂棉，降低脱脂棉中污秽残留，从而保证测量的精确性。装置中利用真空泵提高污液过滤速度，从而大大减小污秽过滤时间，从而提高运行绝缘子污秽度测量效率。The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a method for measuring the pollution degree of operating insulators, which is simple and efficient. First, use absorbent cotton containing alcohol to sample the dirt on the surface of the insulator; then wash the absorbent cotton with a certain amount of water several times to reduce the residue of pollution in the absorbent cotton, thereby ensuring the accuracy of the measurement. In the device, the vacuum pump is used to increase the filtering speed of the dirty liquid, thereby greatly reducing the time of the dirty filtering, thereby improving the measurement efficiency of the pollution degree of the running insulator.
为实现上述目的，本发明采用下述技术方案：To achieve the above object, the present invention adopts the following technical solutions:
一种运行绝缘子污秽度测量方法，包括以下步骤：A method for measuring the pollution degree of an operating insulator, comprising the following steps:
步骤(1)：采用含有酒精的脱脂棉从绝缘子的上、下表面擦洗下污秽物；Step (1): Use absorbent cotton containing alcohol to scrub the dirt from the upper and lower surfaces of the insulator;
步骤(2)：确定脱脂棉清洗用蒸馏水或去离子水量，将水等分清洗步骤(1)中的脱脂棉，降低脱脂棉污秽残留，并将污液置于污液存贮器；Step (2): Determine the amount of distilled water or deionized water used for cleaning the absorbent cotton, divide the water into equal parts to clean the absorbent cotton in step (1), reduce the residue of dirt on the absorbent cotton, and place the dirty liquid in the dirty liquid storage;
步骤(3)：充分搅拌污液，控制搅拌时间在10min-30min；搅拌后将污液静置3h-12h；Step (3): Stir the dirty liquid fully, and control the stirring time at 10min-30min; after stirring, let the dirty liquid stand for 3h-12h;
步骤(4)：对过滤所使用的滤纸进行干燥、称重；Step (4): drying and weighing the filter paper used for filtering;
步骤(5)：利用过滤装置对步骤(3)的污液进行过滤，取过滤得到的过滤清液，测量过滤清液电导率，通过计算得出绝缘子的等值盐密；Step (5): Filter the dirty liquid in step (3) with a filter device, take the filtered clear liquid obtained by filtering, measure the conductivity of the filtered clear liquid, and obtain the equivalent salt density of the insulator by calculation;
步骤(6)：对步骤(5)过滤后的滤纸进行烘干，对烘干后滤纸进行称重，计算得出绝缘子等值灰密。Step (6): Dry the filter paper filtered in step (5), weigh the dried filter paper, and calculate the equivalent gray density of the insulator.
所述步骤(1)中应保证绝缘子表面污秽物擦洗时间为5min-10min，保证难溶污秽在酒精中有足够的溶解时间。In the step (1), it should be ensured that the cleaning time of the dirt on the surface of the insulator is 5 minutes to 10 minutes, and that the insoluble dirt has enough time to dissolve in alcohol.
所述步骤(2)中蒸馏水或去离子水的用水量在300ml～600ml之间。The water consumption of distilled water or deionized water in the step (2) is between 300ml～600ml.
所述步骤(3)中污液静置时间在3h～12h。The standing time of the dirty liquid in the step (3) is 3h to 12h.
所述步骤(4)中滤纸孔径在10～20μm之间。In the step (4), the pore size of the filter paper is between 10 and 20 μm.
所述步骤(6)中对滤纸进行烘干的干燥箱温度设置在90℃～140℃之间，干燥时间在30min-60min。In the step (6), the temperature of the drying oven for drying the filter paper is set between 90° C. and 140° C., and the drying time is 30 minutes to 60 minutes.
所述步骤(5)中，过滤装置包括抽滤瓶，所述抽滤瓶通过抽气管与真空泵连接；所述抽滤瓶顶端与布氏漏斗连接，连接处设有密封圈；所述布氏漏斗的侧壁铺有滤纸。In described step (5), filter device comprises suction filter bottle, and described suction filter bottle is connected with vacuum pump through suction pipe; Described suction filter bottle top is connected with Buchner funnel, and joint is provided with sealing ring; The side walls of the funnel are covered with filter paper.
所述抽气管连接至真空泵的抽气口处，所述真空泵还设有出气口。The air suction pipe is connected to the air suction port of the vacuum pump, and the vacuum pump is also provided with an air outlet.
所述真空泵抽气速率控制在0.1～0.4m3/h之间。速率过大将导致污液过滤不彻底，影响绝缘子等值灰密测量精度；速率过小将导致过滤速度过慢，降低测量效率。The pumping rate of the vacuum pump is controlled between 0.1-0.4m 3 /h. If the speed is too high, the filtration of dirty liquid will be incomplete, which will affect the measurement accuracy of equivalent gray density of insulators; if the speed is too small, the filtration speed will be too slow, which will reduce the measurement efficiency.
所述步骤(5)过滤清液取样量不少于10ml。The sampling volume of the filtered supernatant in the step (5) is not less than 10ml.
本发明的有益效果为：The beneficial effects of the present invention are:
本发明用含酒精脱脂棉分别从绝缘子的上、下表面擦洗下污秽物，等分一定量的蒸馏水或去离子水多次清洗脱脂棉，降低脱脂棉中的污秽残留，并将污液置于污液存贮器。利用真空泵加快污秽过滤速度，同时取一定量的过滤清液，测量绝缘子的等值盐密；然后对过滤残留物进行烘干、称重，得到绝缘子等值灰密。通过酒精溶解绝缘子表面难溶污秽，同时等分一定量的蒸馏水或去离子水多次清洗脱脂棉，并且利用真空泵加快污秽过滤速度，既能提高绝缘子等值盐密灰密测量精度，又能提高绝缘子等值盐密灰密测量速度；测量精度提高了5％～10％左右，过滤时间从自然(无真空泵)过滤的30min缩短到了2min；同时过滤装置的结构简单，设计合理，能够极大地提高污液过滤速度，大大缩短污秽测量时间，提高测量效率。In the present invention, the alcohol-containing absorbent cotton is used to scrub the dirt from the upper and lower surfaces of the insulator, and a certain amount of distilled water or deionized water is equally divided into several times to clean the absorbent cotton to reduce the residue of pollution in the absorbent cotton, and the dirty liquid is placed in the dirty liquid storage. receptacle. Use a vacuum pump to speed up the pollution filtration speed, and at the same time take a certain amount of filtered clear liquid to measure the equivalent salt density of the insulator; then dry and weigh the filtered residue to obtain the equivalent gray density of the insulator. Use alcohol to dissolve insoluble dirt on the surface of the insulator, and at the same time divide a certain amount of distilled water or deionized water to clean the absorbent cotton for many times, and use a vacuum pump to speed up the dirt filtration speed, which can not only improve the measurement accuracy of the equivalent salt density and gray density of the insulator, but also improve the accuracy of the insulator. Equivalent salt density and gray density measurement speed; the measurement accuracy has increased by about 5% to 10%, and the filtration time has been shortened from 30 minutes for natural (without vacuum pump) filtration to 2 minutes; at the same time, the structure of the filtration device is simple and the design is reasonable, which can greatly improve pollution. The liquid filtration speed greatly shortens the pollution measurement time and improves the measurement efficiency.
附图说明Description of drawings
图1为本发明运行绝缘子污秽度测量方法流程图；Fig. 1 is the flow chart of the method for measuring the degree of contamination of an operating insulator in the present invention;
图2为本发明运行绝缘子污秽度测量方法的过滤装置示意图；Fig. 2 is the schematic diagram of the filtration device of the present invention to operate the method for measuring the degree of pollution of insulators;
图中，1为滤纸，2为布氏漏斗，3为密封圈，4为抽滤瓶，5为抽气管，6为真空泵，7为真空泵抽气口，8为真空泵出气口，9为污液，10为过滤清液。In the figure, 1 is the filter paper, 2 is the Buchner funnel, 3 is the sealing ring, 4 is the suction filter bottle, 5 is the suction pipe, 6 is the vacuum pump, 7 is the suction port of the vacuum pump, 8 is the air outlet of the vacuum pump, and 9 is the dirty liquid. 10 is the filtered supernatant.
具体实施方式Detailed ways
下面结合附图和实施例对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
如图1所示，运行绝缘子污秽度精确测量方法，步骤为：As shown in Figure 1, the steps to run the precise measurement method of insulator pollution degree are:
1)采用含有酒精的脱脂棉从绝缘子的上、下表面擦洗下污秽物；应保证绝缘子表面污秽物擦洗时间，保证难溶污秽在酒精中有足够的溶解时间。1) Use absorbent cotton containing alcohol to scrub the dirt from the upper and lower surfaces of the insulator; the time for scrubbing the dirt on the surface of the insulator should be guaranteed to ensure that the insoluble dirt has enough time to dissolve in alcohol.
2)确定脱脂棉清洗用蒸馏水或去离子水量，将水等分(一般分两份)清洗步骤1)中的脱脂棉，降低脱脂棉污秽残留，并将污液置于污液存贮器；蒸馏水或去离子水的用水量应根据脱脂棉染污程度确定，一般在300ml～600ml之间。2) Determine the amount of distilled water or deionized water used for cleaning the absorbent cotton, and divide the water into equal parts (generally divided into two parts) to clean the absorbent cotton in step 1), reduce the dirt residue of the absorbent cotton, and place the dirty liquid in the dirty liquid storage; distilled water or deionized water The amount of ionized water should be determined according to the degree of contamination of the absorbent cotton, generally between 300ml and 600ml.
3)充分搅拌污液，控制搅拌时间在10min左右；搅拌后将污液静置3h以上。3) Stir the dirty liquid fully, and control the stirring time at about 10 minutes; after stirring, let the dirty liquid stand still for more than 3 hours.
4)对过滤所使用的滤纸进行干燥、称重；滤纸孔径在10～20μm之间。4) Dry and weigh the filter paper used for filtering; the filter paper has a pore size of 10-20 μm.
5)利用图2所示的过滤装置对步骤3的污液进行过滤，取一定量的过滤清液，测量清液电导率，通过计算得出绝缘子的等值盐密；利用过滤装置真空泵抽气速率控制在0.1～0.4m3/h之间。速率过大将导致污液过滤不彻底，影响绝缘子等值灰密测量精度；速率过小将导致过滤速度过慢，降低测量效率。过滤清液取样量应不少于10ml。5) Use the filter device shown in Figure 2 to filter the dirty liquid in step 3, take a certain amount of filtered clear liquid, measure the conductivity of the clear liquid, and calculate the equivalent salt density of the insulator; use the filter device to pump air The rate is controlled between 0.1 and 0.4m 3 /h. If the speed is too high, the filtration of dirty liquid will be incomplete, which will affect the measurement accuracy of equivalent gray density of insulators; if the speed is too small, the filtration speed will be too slow, which will reduce the measurement efficiency. The sampling volume of the filtered clear liquid should not be less than 10ml.
6)对步骤5过滤后的滤纸进行烘干，设置干燥箱温度在90℃～140℃之间，控制干燥时间在30min以上；对烘干后滤纸进行称重，计算得出绝缘子等值灰密。6) Dry the filter paper filtered in step 5, set the temperature of the drying oven between 90°C and 140°C, and control the drying time to more than 30 minutes; weigh the filter paper after drying, and calculate the equivalent gray density of the insulator .
如图2所示，为用于加速污液过滤速率的过滤装置，包括抽滤瓶4，抽滤瓶4通过抽气管5与真空泵6连接，连接至真空泵抽气口7处，真空泵6还设有真空泵出气口8；抽滤瓶4顶端与布氏漏斗2连接，连接处设有密封圈3；布氏漏斗2的侧壁上设有滤纸1。将污液9放于布氏漏斗2中，过滤得到过滤清液10。该过滤装置设计合理，结构简单，能够极大地提高污液过滤速度，大大缩短污秽测量时间，提高测量效率。As shown in Figure 2, it is a filter device for accelerating the filtration rate of dirty liquid, including a suction filter bottle 4, and the suction filter bottle 4 is connected with a vacuum pump 6 through a suction pipe 5, and is connected to the vacuum pump suction port 7, and the vacuum pump 6 is also provided with Vacuum pump air outlet 8; the top of suction filter bottle 4 is connected with Buchner funnel 2, and a sealing ring 3 is arranged at the connection; filter paper 1 is arranged on the side wall of Buchner funnel 2. Put the dirty liquid 9 in the Buchner funnel 2, and filter to obtain the filtered clear liquid 10. The filtering device has a reasonable design and a simple structure, can greatly increase the filtering speed of the dirty liquid, greatly shorten the time for measuring the pollution, and improve the measuring efficiency.
实施例1：涂有RTV涂料的钟罩型瓷绝缘子的污秽度测量：Example 1: Measurement of pollution degree of a bell jar type porcelain insulator coated with RTV paint:
1)采样：1) Sampling:
对绝缘子分上下表面分别利用含酒精的脱脂棉进行擦洗，擦洗时间为10min，从而保证难溶污秽在酒精中有足够的溶解时间。将含有污秽的脱脂棉放入试样袋中封存，以备等值盐密灰密测试。Use alcohol-containing absorbent cotton to scrub the upper and lower surfaces of the insulator, and the scrubbing time is 10 minutes, so as to ensure that the insoluble contamination has enough time to dissolve in alcohol. Put the absorbent cotton containing dirt into the sample bag and seal it for the equivalent salt density and gray density test.
2)清洗：2) Cleaning:
取去离子水500ml(具体用水量可根据脱脂棉染污程度确定)，用200ml去离子水第一次清洗含污秽脱脂棉，将脱脂棉拧干；再用200ml去离子水第二次清洗脱脂棉，并将清洗后的脱脂棉拧干。用50ml去离子水第一次清洗容器，再用剩下的50ml去离子水第二次清洗容器。将这500ml清洗液置于烧杯中，此时应注意不要损失擦洗用水，即污秽物取样前后，水量无大的变化。充分搅拌污液，搅拌时间为15min；搅拌后将污液静置6h。Take 500ml of deionized water (the specific water consumption can be determined according to the degree of contamination of the absorbent cotton), use 200ml of deionized water to wash the contaminated absorbent cotton for the first time, and wring out the absorbent cotton; then use 200ml of deionized water to wash the absorbent cotton for the second time, and put Wring out the absorbent cotton after cleaning. The container was rinsed with 50 ml of deionized water for the first time and then with the remaining 50 ml of deionized water for a second time. Put the 500ml cleaning solution in a beaker. At this time, care should be taken not to lose the scrubbing water, that is, there is no significant change in the amount of water before and after sampling the dirt. Fully stir the dirty liquid for 15 minutes; after stirring, let the dirty liquid stand for 6 hours.
3)等值盐密测量：3) Equivalent salt density measurement:
对充分溶解的污液进行过滤，取清液15ml，测量其电导率和温度，即可计算出运行绝缘子的等值盐密(ESDD)。Filter the fully dissolved dirty liquid, take 15ml of the clear liquid, measure its conductivity and temperature, and calculate the equivalent salt density (ESDD) of the operating insulator.
4)等值灰密测量：4) Equivalent gray density measurement:
设置干燥箱温度为110℃，干燥时间为40min，对干燥后的滤纸进行称重，然后对污液进行过滤。利用真空泵加快污液过滤速度，控制真空泵抽气速率为0.3m3/h。对过滤后的滤纸进行烘干，设置干燥箱温度为110℃，干燥时间为40min，对干燥后的滤纸进行称重，计算得到绝缘子等值灰密。Set the temperature of the drying oven to 110°C and the drying time to 40 minutes, weigh the dried filter paper, and then filter the dirty liquid. Use the vacuum pump to speed up the filtering speed of the dirty liquid, and control the pumping rate of the vacuum pump to 0.3m 3 /h. Dry the filtered filter paper, set the temperature of the drying oven at 110°C and the drying time for 40 minutes, weigh the dried filter paper, and calculate the equivalent gray density of the insulator.
实施例2：大小伞型复合绝缘子的污秽度测量：Example 2: Measurement of pollution degree of large and small umbrella composite insulators:
1)采样：1) Sampling:
对绝缘子分上下表面分别利用含酒精的脱脂棉进行擦洗，擦洗时间为5min，从而保证难溶污秽在酒精中有足够的溶解时间。将含有污秽的脱脂棉放入试样袋中封存，以备等值盐密灰密测试。Use alcohol-containing absorbent cotton to scrub the upper and lower surfaces of the insulator respectively, and the scrubbing time is 5 minutes, so as to ensure that the insoluble contamination has enough time to dissolve in alcohol. Put the absorbent cotton containing dirt into the sample bag and seal it for the equivalent salt density and gray density test.
2)清洗：2) Cleaning:
取去离子水300ml(具体用水量可根据脱脂棉染污程度确定)，用125ml去离子水第一次清洗含污秽脱脂棉，将脱脂棉拧干；再用125ml去离子水第二次清洗脱脂棉，并将清洗后的脱脂棉拧干。用25ml去离子水第一次清洗容器，再用剩下的25ml去离子水第二次清洗容器。将这300ml清洗液置于烧杯中，此时应注意不要损失擦洗用水，即污秽物取样前后，水量无大的变化。充分搅拌污液，搅拌时间为10min；搅拌后将污液静置4h。Take 300ml of deionized water (the specific water consumption can be determined according to the degree of contamination of the absorbent cotton), use 125ml of deionized water to wash the absorbent cotton with dirt for the first time, wring out the absorbent cotton; then use 125ml of deionized water to wash the absorbent cotton for the second time, and put Wring out the absorbent cotton after cleaning. Rinse the container first with 25 ml of deionized water, then rinse the container a second time with the remaining 25 ml of deionized water. Put the 300ml cleaning solution in the beaker. At this time, care should be taken not to lose the scrubbing water, that is, there is no significant change in the amount of water before and after sampling the dirt. Fully stir the dirty liquid for 10 minutes; after stirring, let the dirty liquid stand for 4 hours.
3)等值盐密测量：3) Equivalent salt density measurement:
对充分溶解的污液进行过滤，取清液15ml，测量其电导率和温度，即可计算出运行绝缘子的等值盐密(ESDD)。Filter the fully dissolved dirty liquid, take 15ml of the clear liquid, measure its conductivity and temperature, and calculate the equivalent salt density (ESDD) of the operating insulator.
4)等值灰密测量：4) Equivalent gray density measurement:
设置干燥箱温度为90℃，干燥时间为30min，对干燥后的滤纸进行称重，然后对污液进行过滤。利用真空泵加快污液过滤速度，控制真空泵抽气速率为0.2m3/h。对过滤后的滤纸进行烘干，设置干燥箱温度为90℃，干燥时间为30min，对干燥后的滤纸进行称重，计算得到绝缘子等值灰密。Set the temperature of the drying oven to 90°C and the drying time to 30 minutes, weigh the dried filter paper, and then filter the dirty liquid. Use the vacuum pump to speed up the filtering speed of the dirty liquid, and control the pumping rate of the vacuum pump to 0.2m 3 /h. Dry the filtered filter paper, set the temperature of the drying oven at 90°C and the drying time for 30 minutes, weigh the dried filter paper, and calculate the equivalent gray density of the insulator.
上述虽然结合附图对本发明的具体实施方式进行了描述，但并非对本发明保护范围的限制，所属领域技术人员应该明白，在本发明的技术方案的基础上，本领域技术人员不需要付出创造性劳动即可做出的各种修改或变形仍在本发明的保护范围以内。Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.
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Application publication date: 20151118 |