CN203116999U - Large-transformer oil online sampling device - Google Patents
Large-transformer oil online sampling device Download PDFInfo
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- CN203116999U CN203116999U CN 201320152408 CN201320152408U CN203116999U CN 203116999 U CN203116999 U CN 203116999U CN 201320152408 CN201320152408 CN 201320152408 CN 201320152408 U CN201320152408 U CN 201320152408U CN 203116999 U CN203116999 U CN 203116999U
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Abstract
The utility model discloses a large-transformer oil online sampling device, and oil obtained by the device is consistent with the oil environment in an oil tank of a transformer body. The device connected with the oil tank of the transformer body comprises an oil inlet valve, an oil inlet filter, a second valve, a gear pump, a fifth valve, a seventh valve, an eighth valve, a twelfth valve, a first valve, an oil return filter and an oil return valve, wherein the oil inlet valve, the oil inlet filter, the second valve, the gear pump, the fifth valve, the seventh valve, the eighth valve, the twelfth valve, the first valve, the oil return filter and the oil return valve are connected in series through a circulating oil pipeline in sequence from front to back; on the circulating oil pipeline, the back end of the second valve is connected with a third valve in series through an oil pipeline, and the other end of the third valve is connected with the back end of the twelfth valve in series through the oil pipeline; a first branch, a second branch and a third branch are respectively led out from the back end of the gear pump, the back end of the fifth valve and the back end of the seventh valve, and the three branches are collected and then connected with an eleventh valve; the first branch is connected with a fourth valve in series, the second branch is connected with a sixth valve in series, and the back end of the sixth valve is connected with a test oil cup in parallel; and a fourth branch and a fifth branch are led out between the eighth valve and the twelfth valve and respectively connected with a ninth valve and a tenth valve in series.
Description
Technical field
The utility model relates to the transformer relevant apparatus, specifically is applied to the sampling and measuring of transformer oil.
Background technology
Transformer oil is insulating medium important in the transformer, transformer is long-term in service, standing the influence of electric, mechanical, chemistry and environment, these factors act on transformer oil too, must cause some technical indicator of transformer oil can not satisfy the needs of transformer safe operation.Investigate the needs whether the transformer oil performance index meet safe operation of power system, it is the off-line type measuring method that China adopted more.The content of test mainly contains: the test of transformer oil dielectric loss, transformer oil dielectric test, transformer oil chromatographic analysis etc.Annual regular one to twice, from transformer, extract a pipe oil sample, about 250-1000mL, namely so-called " 1 year one pipe oil " delivers to the laboratory to oil sample, and every technical indicator of transformer insulation oil is measured.This sampling method has obvious defects:
1, the technical indicator of detected transformer oil under laboratory condition can not truly reflect the real-time technique index of transformer oil under the charging operation situation;
2, oil sample leaves after the transformer body, variation has all taken place in pressure, temperature, humidity etc., especially the variation of pressure will directly cause the escape of characteristic gas in the oil sample, and these characteristic gas are judged the important evidence of transformer insulated performance, running status exactly;
3, the insulation of transformer mainly is made up of the support that transformer oil, insulating paper are made, owing to insulating paper to the affinity of water much larger than insulating oil, therefore, the water cut in the insulating paper is the water cut in the insulating oil also.Along with the rising of temperature, the moisture in the insulating paper will spread, move in the insulating oil; When the temperature reduction, the moisture content in the insulating oil can turn back in the solid insulation again.The measuring method of " 1 year one pipe oil " obviously can't reflect the variation of the water content in oil that insulate truly.
Transformer oil dielectric strength, dielectric loss coefficient and transformer oil contain measurements such as inflammable gas stratographic analysis, and former all is off-line measurement.Empirical evidence for many years, this traditional method has incomplete place.
For example: the result of off-line measurement has very big dispersiveness, and the result who has is specious, and it is widely different that particularly different time is measured its numerical value of same oil sample, can't obtain proper explanations.This all be since the quality institute that the off-line measurement method can not truly reflect transformer oil extremely.
In addition, when sampling, detect the worker and access oil sample from the transformer waste oil oil drain out, though when connecing oil sample, also discharge the waste oil of some, but transformer oil has certain " dead band " in fuel tank, and namely oil sample does not flow or be mobile insufficient, gel deposition etc., the oil sample that extracts can not represent the genuine property of transformer oil in the oil tank of transformer strictly speaking.In some units, in order to take a sample conveniently, also did automatic improving, for example extract oil sample with small-sized volume pump, though automatization level is provided like this, the method for sampling is not with getting oil has essential distinction by hand, the sample of pumping does not have representativeness, can not truly reflect the characterisitic parameter of transformer oil.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, provides a kind of energy the online device that fluid in the oil tank of transformer is taken a sample; It is consistent with the fluid environment in the transformer body fuel tank that this installs obtained fluid.
The technical scheme that its technical matters that solves the utility model adopts is: the online sampler of a kind of high-power transformer oil, this device is connected with transformer body fuel tank, transformer body fuel tank is provided with transformer and goes out oil cut-off valve and transformer oil-feed stop valve, it is characterized in that:
Comprise the inlet valve that is connected in series successively by the circulating oil path pipeline from front to back, oil-feed filtrator, two valves, gear-type pump, five valves, seven valves, eight valves, 12 valves, a valve, return filter, oil return valve;
Above-mentioned inlet valve is connected to transformer and goes out oil cut-off valve, and above-mentioned oil return valve is connected to transformer oil-feed stop valve; Be connected by the first consistent lubricant pipe between inlet valve and the oil-feed filtrator, be connected by the second consistent lubricant pipe between oil return valve and the return filter;
On the above-mentioned circulating oil path pipeline, the rear end of two valves also is serially connected with three valves by oil line pipe, and the other end of three valves is by the rear end of oil line pipe serial connection to above-mentioned 12 valves;
On the above-mentioned circulating oil path pipeline, the rear end of gear-type pump, the rear end of the rear end of five valves and seven valves is drawn first branch road respectively, second branch road and the 3rd branch road, three branch roads compile the back and connect 11 valves;
Serial connection four valves on above-mentioned first branch road, serial connection six valves on second branch road, on second branch road, the rear end of six valves also is parallel with the test lubricating cup;
On the above-mentioned circulating oil path pipeline, draw the 4th branch road and the 5th branch road between eight valves and 12 valves, serial connection nine valves on the 4th branch road, serial connection ten valves on the 5th branch road.
Further be: on the above-mentioned circulating oil path pipeline, also be connected in series pressure transducer between five valves and seven valves; The leading point of second branch road is positioned at the rear end of circulating oil path pipeline upward pressure sensor; Also be serially connected with three-temperature sensor on first branch road.
Further be: on the above-mentioned circulating oil path pipeline, also be connected in series oil-water separator between eight valves and 12 valves, draw on the 4th the route oil-water separator.
Further be: also be provided with first temperature sensor and second temperature sensor on the above-mentioned transformer body fuel tank.
The utility model compared with prior art has the following advantages:
The online sampler of the utility model transformer oil, can under the situation of the normal operation of transformer, to transformer oil serial sampling, change temperature, the pressure of transformer oil hardly, extract oil sample being close under the identical condition with transformer inside, for corresponding measuring equipment analysis use.For example: the stratographic analysis of transformer oil dissolved gas, transformer oil voltage breakdown, transformer oil moisture in service, transformer oil dielectric loss angle tan δ etc., these are fully different with the manual sampling that present most of units adopt, also with simply to add a volume pump extraction oil sample different fully.What the utility model adopted is ripe and reliable method, utilizing this technology to can be implemented in line fully draws oil sample, realize dielectric strength and the dielectric loss coefficient of online measuring transformer oil, realize that on-line measurement is significant to the stability and safety operation of guaranteeing electric system.
Description of drawings
Fig. 1 is one-piece construction figure of the present utility model.
Description of reference numerals:
1 is transformer body fuel tank, and 2 is inlet valve, and 3 are the oil-feed filtrator, 4 is two valves, and 5 is gear-type pump, and 6 is five valves, 7 are the test lubricating cup, and 8 is seven valves, and 9 is eight valves, 10 is nine valves, and 11 is 11 valves, and 12 is ten valves, 13 is pressure transducer, and 14 is six valves, and 15 is four valves, 16 is three-temperature sensor, and 17 is 12 valves, and 18 is three valves, 19 is a valve, and 20 is return filter, and 21 is oil return valve, 22 is first temperature sensor, and 23 is second temperature sensor, and 24 is oil-water separator, 25 go out oil cut-off valve for transformer, 26 is transformer oil-feed stop valve, and 27 is the first consistent lubricant pipe, and 28 is the second consistent lubricant pipe.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, it shows a kind of embodiment of the present utility model, the online sampler of the utility model high-power transformer oil, it extracts oil sample automatically from transformer body fuel tank 1, in sampling process, by a bypass circuit oil circuit, keep the test oil sample consistent with the height of operation oil in the transformer body.Under the control of automatic sampling device, can guarantee that transformer can not produce the oil flow electrification phenomenon, transformer can not send signal or tripping operation because of the operation of this device, and the various protections of transformer can malfunction.When this device was installed, transformer did not need to stop transport, and the various protections of transformer do not need out of service yet.
In a word, the utility model can carry out tests such as oil dissolved gas stratographic analysis, transformer oil voltage breakdown, transformer oil moisture in service, transformer oil dielectric loss angle tan δ being close under the identical condition with transformer body fuel tank 1 environment.(in certain specific temperature, moisture can stop in the migration between transformer oil and the solid insulation) or sampling and test when humidity has the greatest impact to insulation when transformer oil is in equilibrium state.To test assurance and the control on opportunity, what be the utility model with the traditional experiment method is maximum different.
The utility model is by three temperature sensors, oil-feed filtrator 3, gear-type pump 5,14 solenoid valves (valve 19, two valves 4, three valves 18, four valves 15, five valves 6, six valves 14, seven valves 8, eight valves 9, nine valves 10, ten valves 12,11 valves 11,12 valves 17, inlet valve 2 and oil return valve 21), pressure transducer 13, oil-water separator 24, a liquid level sensor and measure compositions such as testing lubricating cup 7.
In the online sampler of the utility model high-power transformer oil, inlet valve 2 and transformer are gone out oil cut-off valve 25 be connected; Oil return valve 21 is connected with transformer oil-feed stop valve 26, and this device namely forms the loop with transformer body fuel tank 1, opens transformer and goes out oil cut-off valve 25, transformer oil-feed stop valve 26; Simultaneously above-mentioned each parts are connected by oil line pipe, can move, its operational process comprises three phases:
The one, the preparatory stage (mainly being with the remaining air emptying in each pipeline):
A, open two valves 4, about one second of gear-type pump 5 operations make the first consistent lubricant pipe 27 be negative pressure, open inlet valve 2 and two valves 4, five valves 6, seven valves 8, eight valves 9 and nine valves 10, open gear-type pump 15 seconds, and under the effect of gear-type pump 5, transformer fluid enters this device;
B, open a valve 19 and three valves 18, about one second of gear-type pump 5 operations, make the second consistent lubricant pipe 28 be negative pressure, open oil return valve 21 and a valve 19, three valves 18, five valves 6, seven valves 8, eight valves 9 and nine valves 10, open gear-type pump 5 about 15 seconds, under the effect of gear-type pump 5, fluid enters this device by the second consistent lubricant pipe 28, and at this moment can guarantee does not have remaining air in the oil return circuit;
C, open inlet valve 2 and two valves 4, four valves 15, six valves 14, seven valves 8, eight valves 9 and nine valves 10, gear-type pump moves 20 seconds; Fluid is through test glass 7;
D, open three valves 18, four valves 15, six valves 14, seven valves 8, eight valves 9 and 12 valves 17, under gear-type pump 5 effects, fluid circulates in this device;
E, close three valves 18, open inlet valve 2, two valves 4, four valves 15, six valves 14, seven valves 8, eight valves 9,12 valves 17, a valve 19 and oil return valve 21, under the effect of gear-type pump 5, fluid circulates between this device and transformer body fuel tank 1, at this moment flow velocity should be controlled the per minute at 150ml/, pressure should not be higher than 0.047Mpa yet, if surpass then should reduce the rotating speed of gear-type pump 5.
The 2nd, the sampling test stage (extract with transformer body fuel tank in environmental facies with fluid):
The rotating speed of a, reduction gear-type pump 5 makes flow control live the 50-70ml/ per minute, opens inlet valve 2 and two valves 4, four valves 15, six valves 14, seven valves 8, eight valves 9 and nine valves 10, and fluid is process test lubricating cup 7 under the effect of gear-type pump;
B, open inlet valve 2, two valves 4, five valves 6, six valves 14 and 11 valves 11, under the effect of gear-type pump 5, oil sample flows out test lubricating cup 7;
Above step triplicate;
C, open two valves 4, four valves 15, six valves 14, seven valves 8, eight valves 9,12 valves 17 and oil return valve 21, with short oil road sampling.
The 3rd, discharge the waste oil liquid stage (fluid after the sampling in previous stage is discharged this device):
Open nine valves 10,12 valves 17, three valves 18, five valves 6, six valves 14 and 11 valves 11, open gear-type pump 5, the waste oil sample is discharged through short oil road.
The online sampler of transformer oil (the utility model) of our development, can be under the situation of the normal operation of transformer, to transformer oil serial sampling, change temperature, the pressure of transformer oil hardly, extract oil sample being close under the identical condition with transformer inside, for corresponding measuring equipment analysis use.For example: the stratographic analysis of transformer oil dissolved gas, transformer oil voltage breakdown, transformer oil moisture in service, transformer oil dielectric loss angle tan δ etc., these are fully different with the manual sampling that present most of units adopt, also with simply to add a volume pump extraction oil sample different fully.What the utility model adopted is ripe and reliable method, utilizing this technology to can be implemented in line fully draws oil sample, realize dielectric strength and the dielectric loss coefficient of online measuring transformer oil, realize that on-line measurement is significant to the stability and safety operation of guaranteeing electric system.
By reference to the accompanying drawings the utility model preferred implementation has been done detailed description above, but the utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skills possess, can also under the prerequisite that does not break away from the utility model aim, make a variety of changes.
Do not break away from design of the present utility model and scope and can make many other changes and remodeling.Should be appreciated that the utility model is not limited to specific embodiment, scope of the present utility model is defined by the following claims.
Claims (4)
1. the online sampler of high-power transformer oil, this device is connected with transformer body fuel tank (1), transformer body fuel tank (1) is provided with transformer and goes out oil cut-off valve (25) and transformer oil-feed stop valve (26), it is characterized in that: comprise the inlet valve (2) that is connected in series successively by the circulating oil path pipeline from front to back, oil-feed filtrator (3), two valves (4), gear-type pump (5), five valves (6), seven valves (8), eight valves (9), 12 valves (17), one valve (19), return filter (20), oil return valve (21); Above-mentioned inlet valve (2) is connected to transformer and goes out oil cut-off valve (25), and above-mentioned oil return valve (21) is connected to transformer oil-feed stop valve (26); Be connected by the first consistent lubricant pipe (27) between inlet valve (2) and the oil-feed filtrator (3), be connected by the second consistent lubricant pipe (28) between oil return valve (21) and the return filter (20); On the above-mentioned circulating oil path pipeline, the rear end of two valves (4) also is serially connected with three valves (18) by oil line pipe, and the other end of three valves (18) is by the rear end of oil line pipe serial connection to above-mentioned 12 valves (17); On the above-mentioned circulating oil path pipeline, the rear end of gear-type pump (5), the rear end of the rear end of five valves (6) and seven valves (8) is drawn first branch road respectively, second branch road and the 3rd branch road, three branch roads compile the back and connect 11 valves (11); Serial connection four valves (15) on above-mentioned first branch road, serial connection six valves (14) on second branch road, on second branch road, the rear end of six valves (14) also is parallel with test lubricating cup (7); On the above-mentioned circulating oil path pipeline, draw the 4th branch road and the 5th branch road between eight valves (9) and 12 valves (17), serial connection nine valves (10) on the 4th branch road, serial connection ten valves (12) on the 5th branch road.
2. the online sampler of a kind of high-power transformer oil according to claim 1 is characterized in that: on the described circulating oil path pipeline, also be connected in series pressure transducer (13) between five valves (6) and seven valves (8); The leading point of second branch road is positioned at the rear end of circulating oil path pipeline upward pressure sensor (13); Also be serially connected with three-temperature sensor (16) on first branch road.
3. the online sampler of a kind of high-power transformer oil according to claim 2, it is characterized in that: on the described circulating oil path pipeline, also be connected in series oil-water separator (24) between eight valves (9) and 12 valves (17), draw on the 4th the route oil-water separator (24).
4. according to the online sampler of the arbitrary described a kind of high-power transformer oil of claim 1-3, it is characterized in that: also be provided with first temperature sensor (22) and second temperature sensor (23) on the described transformer body fuel tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152408 CN203116999U (en) | 2013-03-30 | 2013-03-30 | Large-transformer oil online sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152408 CN203116999U (en) | 2013-03-30 | 2013-03-30 | Large-transformer oil online sampling device |
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| Publication Number | Publication Date |
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| CN203116999U true CN203116999U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320152408 Expired - Fee Related CN203116999U (en) | 2013-03-30 | 2013-03-30 | Large-transformer oil online sampling device |
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| CN (1) | CN203116999U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547572A (en) * | 2016-01-18 | 2016-05-04 | 成都佳信电气工程技术公司 | On-line pressure monitoring and automatic quantitative oil-taking/supplementing device for power oil shortage equipment |
| CN105738485A (en) * | 2016-04-08 | 2016-07-06 | 大连世有电力科技有限公司 | Intelligent storage device of oil for detecting transformer oil chromatography detecting device |
| CN105758672A (en) * | 2016-02-24 | 2016-07-13 | 国网技术学院 | Preparing and collecting device and preparing and collecting method for oil sample of analogue transformer |
| CN111766108A (en) * | 2020-07-02 | 2020-10-13 | 国家电网有限公司 | Safe and efficient oil sample collection device |
-
2013
- 2013-03-30 CN CN 201320152408 patent/CN203116999U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547572A (en) * | 2016-01-18 | 2016-05-04 | 成都佳信电气工程技术公司 | On-line pressure monitoring and automatic quantitative oil-taking/supplementing device for power oil shortage equipment |
| CN105547572B (en) * | 2016-01-18 | 2018-06-12 | 成都佳信电气工程技术公司 | The few oily equipment on-line pressure monitoring of electric power and automatic ration take/recharging oil device |
| CN105758672A (en) * | 2016-02-24 | 2016-07-13 | 国网技术学院 | Preparing and collecting device and preparing and collecting method for oil sample of analogue transformer |
| CN105738485A (en) * | 2016-04-08 | 2016-07-06 | 大连世有电力科技有限公司 | Intelligent storage device of oil for detecting transformer oil chromatography detecting device |
| CN111766108A (en) * | 2020-07-02 | 2020-10-13 | 国家电网有限公司 | Safe and efficient oil sample collection device |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20130807 Termination date: 20160330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |