CN103499470A - Sampling device and sampling method for gas content of insulating oil - Google Patents
Sampling device and sampling method for gas content of insulating oil Download PDFInfo
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- CN103499470A CN103499470A CN201310455339.6A CN201310455339A CN103499470A CN 103499470 A CN103499470 A CN 103499470A CN 201310455339 A CN201310455339 A CN 201310455339A CN 103499470 A CN103499470 A CN 103499470A
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Abstract
The invention discloses a sampling device and a sampling method for the gas content of insulating oil. The sampling device for the gas content of the insulating oil comprises a sampling joint, a sampling pipeline device of which one end is connected with the sampling joint, a sampler detachably connected with the other end of the sampling pipeline device, and a vacuum suction filtration device connected with the sampling pipeline device. The sampling device can improve the accuracy of a test result, is easy to operate is mounted conveniently and quickly and can realize hot-line work.
Description
Technical field
The present invention relates to power equipment sampler field, particularly a kind of insulating oil air content sampler and sampling method thereof.
Background technology
The air content analysis is the important means that the equipment research such as electric system EHV transformer, operational defect detected, implemented repair based on condition of component, is that the extra-high tension unit of national regulation is joined, the important tests project of preventative maintenance.In the historical test data to the transformer insulation oil air content test, carry out finding after analytic statistics, oxygen in 80% test findings, the content of nitrogen component exceed the prerun standard of industry, and its content ratio approaches oxygen in air, nitrogen ratio, but after being carried out to retrial, these EHV transformer equipment find, the underproof oil sample of part test result is not that oil sample itself exists defect, but oil sample get in oily process entrained air cause oil in gas content exceed standard.And current sampling method is mainly to pass through the direct sample of transformer delivery valve with glass syringe, because the sample valve of each producer is all different, and the sampling process oil sample directly contacts with air, thereby easily entrained air causes gas content in oil sample to exceed standard.
Summary of the invention
Based on this, sample difficult problem for existing insulating oil air content, be necessary to propose a kind of simple and quick insulating oil air content sampler and sampling method thereof.
The invention provides a kind of insulating oil air content sampler, technical scheme is as follows:
A kind of insulating oil air content sampler, comprise sample connection, the sampling line device that an end is connected with sample connection, the sampler removably connected with the sampling line device other end, and the vacuum filtration device be connected with the sampling line device.
Before sampling, by the vacuum filtration device be connected with the sampling line device, sampling line device and sample connection are vacuumized to processing, and whole sampling process is carried out under sealed environment, avoid ambient atmos in sampling process to infiltrate oil sample, also avoid the escape of gas in oil sample to go out, thereby guaranteed the accuracy that oil sample detects.
Below its further technical scheme is described:
Preferably, the sampling line device comprises stopple coupon and T-valve, and described sample connection is connected with T-valve by stopple coupon with sampler, and described T-valve one end is connected with the vacuum filtration device.Utilize T-valve that stopple coupon, vacuum filtration device and sample connection are linked together, be convenient to stopple coupon and sample connection etc. is vacuumized to processing.
Preferably, the sampling line device comprises common contact, and this common contact couples together sample connection and T-valve one end, and an end of stopple coupon is connected with the T-valve other end, the stopple coupon other end and sampler removably connect, and the 3rd end of T-valve is connected with the vacuum filtration device.By this connected mode, T-valve, vacuum filtration device and various terminal are arranged together, compact conformation, be convenient to install and operation.
Preferably, the sampling line device comprises common contact, and common contact couples together an end of sample connection and stopple coupon, and an end of T-valve is connected with the other end of stopple coupon, the other end and the sampler of T-valve removably connect, and the 3rd end of T-valve is connected with the vacuum filtration device.By this connected mode, T-valve and vacuum filtration Plant arrangement, at the sampler end, can carried out to vacuum pumping away from the charging equipment place, safe and vacuumizing effect can be better.
Preferably, the sampling line device comprises common contact, and common contact couples together an end of sample connection and stopple coupon, and the two ends of T-valve are connected in the middle of stopple coupon, the 3rd end of T-valve is connected with the vacuum filtration device, and sampler and the stopple coupon other end removably connect.The installation site of T-valve can be chosen suitable position according to actual conditions and carry out vacuum pumping between the end to end of stopple coupon, and adaptability is stronger.
Preferably, the vacuum filtration device is controllable type vacuum filtration device, and it comprises vacuum valve.Utilize controllable type vacuum filtration device can control the vacuum tightness of sampling line device and sample connection inside, vacuum valve can be opened and closed the vacuum filtration device.
Preferably, stopple coupon comprises grease proofing internal layer, and is coated on the outer asepticised outer layer of internal layer.The internal layer of stopple coupon can be grease proofing plastics, and skin can be etch-proof metal material, and can be crooked, good airproof performance, and applicability is strong, good airproof performance, the whole piece pipeline has corrosion resistance, and Durability is long.
Preferably, stopple coupon length can be selected to regulate according to actual needs, makes sampler and transformer and near charging equipment distance enough far away, can carry out safely charged sampling operation.
Preferably, sample connection is rapid-acting coupling.It has good sealing, and its specification due to the specification difference of sample valve, needs sample connection corresponding to design to dock with it, rapid-acting coupling connection simple and fast according to the sample valve design of installing on sampling equipment.
Preferably, the sample connection material is stainless steel or aldary.The sample connection of this material is corrosion-resistant durable not fragile.
Preferably, the sampling line device has the common contact be connected with sample connection.Because the diversified in specifications of sample connection causes, but need a unified sampling line joint to dock with it, convenient and swift, save cost.
The invention provides a kind of insulating oil air content sampling method, technical scheme is as follows:
A kind of insulating oil air content sampling method comprises the following steps:
Installing insulating oil air content sampler;
Open the vacuum filtration device, sample connection and sampling line device inside are vacuumized;
Utilize sampler to be sampled.
Preferably, the process of installing insulating oil air content sampler comprises the following steps:
Connect suitable sample connection according to the sample valve specification; Sample connection is connected with the common contact of sampling line device one end, an end of T-valve or stopple coupon is connected with common contact; The other end of T-valve or stopple coupon is connected with sampler; The 3rd end of T-valve is connected with the vacuum valve of vacuum filtration device.
Preferably, the step vacuumized is as follows:
Open the vacuum filtration device, open vacuum valve, open T-valve the sampling line device is communicated with the vacuum filtration device; Air with the vacuum filtration device to sample connection and sampling line device inside is vacuumized; Observe vacuum tightness according to the tensimeter of installing, after exhausting vacuum, close vacuum valve and stop vacuumizing, and close T-valve and make sampling line device and the disconnection of vacuum filtration device.
Preferably, the step of sampling is as follows:
Open sample valve, open T-valve the sampling line device is communicated with sampler, utilize the oil sample in sampler suction transformer; Sample completely, close sample valve, and close T-valve, sampling line device and sampler are disconnected.
The present invention has advantages of following outstanding:
(1) transformation that the insulating oil gassiness is measured to oily device is existingly got the oil test condition to optimizing, is shortened sample time, increasing work efficiency has good improved action, and has good economic benefit and social benefit;
(2) simple to operate, quick and easy for installation and energy hot line job;
(3) guarantee that oil sample not there will be gas to sneak into or loss in sampling process, make sample more press close to the state of oil in equipment, improve the test findings accuracy;
(4) can effectively shorten the sample time of insulating oil air content test, increase work efficiency and improve experimental accuracy, and can find in time defect equipment and be processed, guarantee electrical network, device security stable operation, improve power supply reliability;
(5) its achievement not only can be used on transformer insulation oil air content sampling project in addition, and can promotion and application on other insulating oil sampling project, optimize the existing oil test condition of getting.
The accompanying drawing explanation
Fig. 1 is total schematic block diagram of insulating oil air content sampler in the embodiment of the present invention one;
Fig. 2 is the sampling line device schematic block diagram of insulating oil air content sampler in the embodiment of the present invention one;
Fig. 3 is the sampling line device schematic diagram of insulating oil air content sampler in the embodiment of the present invention one;
Fig. 4 is the sampling line device schematic block diagram of insulating oil air content sampler in the embodiment of the present invention two;
Fig. 5 is the sampling line device schematic block diagram of insulating oil air content sampler in the embodiment of the present invention three.
Description of reference numerals:
10-insulating oil air content sampler, the 110-sample valve, the 120-sample connection, (130,130 ', 130 ")-the sampling line device, 131-common contact, 132-T-valve, 133-stopple coupon, 140-vacuum filtration device, 150-sampler.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.
Embodiment mono-
As shown in Figure 1, the invention provides a kind of insulating oil air content sampler 10, comprise sample connection 120, the sampling line device 130 that one end is connected with sample connection 120, the sampler 150 removably connected with sampling line device 130 other ends, and the vacuum filtration device 140 be connected with sampling line device 130.This insulating oil air content sampler 10 is that transformer is connected with sampling equipment, and transformer has sample valve 110, and sample connection 120 is connected with sample valve 110.
Before sampling, vacuumized processing by 140 pairs of sampling line devices 130 of vacuum filtration device and sample valve 110, the sample connection 120 be connected with sampling line device 130, and whole sampling process is carried out under sealed environment, avoid in the sampling process ambient atmos is infiltrated oil sample, also avoid the escape of gas in oil sample to go out, thereby guaranteed the accuracy that oil sample detects.
As shown in Figure 2 to Figure 3, the sampling line device 130 be connected with sample connection 120, it comprises stopple coupon 133, and the T-valve 132 that is connected in stopple coupon 133 1 ends, the other end of this T-valve 132 is connected with vacuum filtration device 140; This sampling line device 130 also comprises common contact 131, and this common contact 131 couples together sample connection 120 and T-valve 132; Sampler 150 removably connects with stopple coupon 133 other ends.Utilize T-valve 132 that stopple coupon 133, vacuum filtration device 140 and common contact 131 are linked together, be convenient to stopple coupon 133 and sample connection 120, sample valve 110 etc. are vacuumized to processing.And, by this connected mode, T-valve 132, vacuum filtration device 140 and various terminal being arranged together, compact conformation, be convenient to install and operation.
The sample connection 120 be connected with sample valve 110 is for having the rapid-acting coupling of good sealing property, and its specification shape is according to sample valve 110 designs.Because the specification difference of sample valve 110, need sample connection 120 corresponding to design to dock with it, rapid-acting coupling connects simple and fast.Sample connection 120 materials are stainless steel or aldary, and the sample connection 120 of this material is corrosion-resistant durable not fragile.
The 3rd end of above-mentioned T-valve 132 is connected with vacuum filtration device 140, and it is controllable type vacuum filtration device, comprises the devices such as vacuum valve, vacuum pump.Utilize controllable type vacuum filtration device can control the vacuum tightness of stopple coupon 133 and sample connection 120, sample valve 110 inside, vacuum valve can be opened and closed vacuum filtration device 140, utilizes the air in the vacuum pump draw line.
Herein, sampler 150 removably connects with stopple coupon 133 other ends.Sampler 150 is the graduated glass syringe of tool (can be also other samplers), and the capacity of sampler 150 need to be chosen according to sampling.The capacity that herein can choose is 100ml, conveniently is used for directly extracting a certain amount of oil sample.Stopple coupon 133 can arrange a seal with sampler 150 links, when not needing to sample, with seal, stopple coupon is sealed, and avoids polluting; When needs sample, seal to be opened, in connection, sampler is carried out sampling operation.
In addition, the invention provides a kind of insulating oil air content sampling method, comprise the following steps:
Installing insulating oil air content sampler 10, concrete steps are: according to sample valve 110 specifications, connect suitable sample connection 120; Sample connection 120 is connected with the common contact 131 of sampling line device 130 1 ends, an end of T-valve 132 or stopple coupon 133 is connected with common contact 131; The other end of T-valve 132 or stopple coupon 133 is connected with sampler 150; The 3rd end of T-valve 132 is connected with the vacuum valve of vacuum filtration device 140 by a joint;
Open vacuum filtration device 140, sample connection 120 and sampling line device 130 inside are vacuumized, concrete steps are: open vacuum filtration device 140, open vacuum valve, open T-valve 132 sampling line device 130 is communicated with vacuum filtration device 140; With the air of 140 pairs of sample connections 120 of vacuum filtration device and sampling line device 130 inside, vacuumized; Observe vacuum tightness according to the tensimeter of installing, after exhausting vacuum, close vacuum valve and stop vacuumizing, and close T-valve 132 sampling line device 130 and vacuum filtration device 140 are disconnected;
After exhausting vacuum, utilize sampler 150 to be sampled, concrete steps are: open the sample valve 110 of transformer, open T-valve 132 sampling line device 130 is communicated with sampler 150, utilize the oil sample in sampler 150 suction transformers; Sample completely, close sample valve 110, and close T-valve 132, sampling line device 130 and sampler 150 are disconnected.
Finally, as required, dismounting insulating oil air content sampler 10.Pull down the sampler 150 that has extracted oil sample, prepare oil sample is detected being used for.
Embodiment bis-
As shown in Figure 4, sampling line device 130 ' comprises stopple coupon 133, and the common contact 131 that is connected in stopple coupon 133 1 ends, and common contact 131 is connected with sample connection 120; Also comprise the T-valve 132 that is connected in stopple coupon 133 other ends, the other end of T-valve 132 and sampler 150 removably connect, and the 3rd end of T-valve 132 is connected with vacuum filtration device 140.Utilize T-valve 132 that stopple coupon 133, vacuum filtration device 140 and stopple coupon 133 are linked together, be convenient to stopple coupon 133 and sample connection 120, sample valve 110 etc. are vacuumized to processing.And, by this connected mode, T-valve 132 and vacuum filtration device 140 are arranged in to the sampler end, and can carry out vacuum pumping away from the charging equipment place, safe and vacuumizing effect can be better.
With respect to embodiment mono-, its difference is the installation site of T-valve 132 is moved to the other end from an end of stopple coupon 133, and other structures are basic identical.Sampling method in corresponding insulating oil air content sampling method and embodiment mono-is also basic identical.
Embodiment tri-
As shown in Figure 5, sampling line device 130 " comprise stopple coupon 133, and the common contact 131 that is connected in stopple coupon 133 1 ends, common contact 131 is connected with sample connection 120; Also comprise that two ends are connected in the middle T-valve 132 of stopple coupon 133, the 3rd end of T-valve 132 is connected with vacuum filtration device 140; Sampler 150 removably connects with stopple coupon 133 other ends.Utilize T-valve 132 that stopple coupon 133, vacuum filtration device 140 and stopple coupon 133 are linked together, be convenient to stopple coupon 133 and sample connection 120, sample valve 110 etc. are vacuumized to processing, and can choose suitable position according to actual conditions on stopple coupon 133 and carry out vacuum pumping, adaptability is stronger.
With respect to embodiment mono-, its difference is the installation site of T-valve 132 to be moved to the middle part of stopple coupon 133 from an end of stopple coupon 133, and other structures are basic identical.Sampling method in corresponding insulating oil air content sampling method and embodiment mono-is also basic identical.
Except using T-valve 132, can also use other coupling arrangement that vacuum filtration device 140 is connected with sampling line device 130, with realization, stopple coupon 133, sample connection 120 etc. is vacuumized, reduce ducted air, make to make sample to keep pure in sampling process.
Generally speaking, the present invention has advantages of following outstanding:
(1) transformation that gassiness is measured to oily device is existingly got the oil test condition to optimizing, is shortened sample time, increasing work efficiency has good improved action, and has good economic benefit and social benefit;
(2) simple to operate, quick and easy for installation and energy hot line job;
(3) guarantee that oil sample not there will be gas to sneak into or loss in sampling process, make sample more press close to the state of oil in equipment, improve the test findings accuracy;
(4) can effectively shorten the sample time of insulating oil air content test, increase work efficiency and improve experimental accuracy, and can find in time defect equipment and be processed, guarantee electrical network, device security stable operation, improve power supply reliability;
(5) its achievement not only can be used on transformer insulation oil air content sampling project in addition, and can promotion and application on other insulating oil sampling project, optimize the existing oil test condition of getting.
The above embodiment has only expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. an insulating oil air content sampler, it is characterized in that, comprise sample connection, the sampling line device that an end is connected with described sample connection, the sampler removably connected with the described sampling line device other end, and the vacuum filtration device be connected with described sampling line device.
2. insulating oil air content sampler according to claim 1, it is characterized in that, described sampling line device comprises stopple coupon and T-valve, and described sample connection is connected with T-valve by stopple coupon with sampler, and described T-valve one end is connected with the vacuum filtration device.
3. insulating oil air content sampler according to claim 2, it is characterized in that, described sampling line device comprises common contact, described common contact couples together described sample connection and T-valve one end, one end of described stopple coupon is connected with the described T-valve other end, the described stopple coupon other end and described sampler removably connect, and the 3rd end of described T-valve is connected with the vacuum filtration device.
4. insulating oil air content sampler according to claim 2, it is characterized in that, described sampling line device comprises common contact, described common contact couples together an end of described sample connection and described stopple coupon, one end of described T-valve is connected with the other end of described stopple coupon, the other end of described T-valve and described sampler removably connect, and the 3rd end of described T-valve is connected with the vacuum filtration device.
5. insulating oil air content sampler according to claim 2, it is characterized in that, described sampling line device comprises common contact, described common contact couples together an end of described sample connection and described stopple coupon, the two ends of described T-valve are connected in the middle of described stopple coupon, the 3rd end of described T-valve is connected with the vacuum filtration device, and described sampler and the described stopple coupon other end removably connect.
6. according to the described insulating oil air content of claim 2-5 any one sampler, it is characterized in that, described stopple coupon comprises grease proofing internal layer, and is coated on the outer asepticised outer layer of described internal layer.
7. according to the described insulating oil air content of claim 1-5 any one sampler, it is characterized in that the rapid-acting coupling that described sample connection is.
8. an insulating oil air content sampling method, is characterized in that, comprises the following steps:
Installing insulating oil air content sampler;
Open the vacuum filtration device, sample connection and sampling line device inside are vacuumized;
Utilize sampler to be sampled.
9. insulating oil air content sampling method according to claim 8, is characterized in that, the step vacuumized is as follows:
Open the vacuum filtration device, open vacuum valve, open T-valve the sampling line device is communicated with the vacuum filtration device;
Air with the vacuum filtration device to sample connection and sampling line device inside is vacuumized;
Observe vacuum tightness according to the tensimeter of installing, after exhausting vacuum, close vacuum valve and stop vacuumizing, and close T-valve and make sampling line device and the disconnection of vacuum filtration device.
10. insulating oil air content sampling method according to claim 8, is characterized in that, the step of sampling is as follows:
Open sample valve, open T-valve the sampling line device is communicated with sampler, utilize the oil sample in sampler suction transformer;
Sample completely, close sample valve, and close T-valve, sampling line device and sampler are disconnected.
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| CN108007730A (en) * | 2014-06-09 | 2018-05-08 | 国网山东省电力公司潍坊供电公司 | A kind of power equipment easy to carry is standby with sulfur hexafluoride sampling cartridge |
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| CN105758674A (en) * | 2016-04-19 | 2016-07-13 | 马树布 | Sampling device and sampling method of electric locomotive transformer oil |
| CN107449636A (en) * | 2016-05-30 | 2017-12-08 | 国网福建省电力有限公司 | A kind of hermetically sealed method that draws oil sample of main transformer butterfly valve Special vacuum |
| CN107449636B (en) * | 2016-05-30 | 2020-01-10 | 国网福建省电力有限公司 | Vacuum full-sealing oil sampling method special for main transformer butterfly valve |
| CN107389841A (en) * | 2017-08-31 | 2017-11-24 | 国网河南省电力公司检修公司 | A kind of hermetically sealed injector of dielectric oil chromatographic analysis |
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| CN109187100A (en) * | 2018-10-22 | 2019-01-11 | 国网四川省电力公司南充供电公司 | Transformer sample connection and sampling method |
| CN111929116A (en) * | 2020-09-11 | 2020-11-13 | 国网新疆电力有限公司电力科学研究院 | Sampling method for detecting gas content of insulating oil |
| CN112033852A (en) * | 2020-09-11 | 2020-12-04 | 广东电网有限责任公司肇庆供电局 | Method for detecting gas content of oil sample |
| CN112033852B (en) * | 2020-09-11 | 2023-11-07 | 广东电网有限责任公司肇庆供电局 | Method for detecting gas content of oil sample |
| CN111929116B (en) * | 2020-09-11 | 2024-02-13 | 国网新疆电力有限公司电力科学研究院 | Sampling method for detecting air content of insulating oil |
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Effective date of registration: 20200921 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |