CN112461999A - Automatic detection gas collection box for transformer gas and use method thereof - Google Patents
Automatic detection gas collection box for transformer gas and use method thereof Download PDFInfo
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- CN112461999A CN112461999A CN202011260206.XA CN202011260206A CN112461999A CN 112461999 A CN112461999 A CN 112461999A CN 202011260206 A CN202011260206 A CN 202011260206A CN 112461999 A CN112461999 A CN 112461999A
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- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 163
- 238000004587 chromatography analysis Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000023077 detection of light stimulus Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
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- 238000007639 printing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
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Abstract
The invention discloses an automatic detection gas collection box for transformer gas and a use method thereof, wherein the automatic detection gas collection box for transformer gas comprises a gas collection box, a detection chamber and an electric cabinet; the left side of the electric cabinet is connected with the right side of the gas collection box, and the top of the electric cabinet is connected with the bottom of the detection chamber. According to the invention, the cavity is used for placing transformer oil and collecting light gas, air in the cavity and the gas storage tank is pumped away through the vacuum pump, the light gas flowing into the negative pressure gas storage tank is detected through the high-precision sensor, the detection result is transmitted to the control screen to be displayed, meanwhile, the gas storage tank is connected with the vacuum pump through the communication pipe C, the electromagnetic valve C is added to control gas in the gas storage tank to enter, the whole device can carry out multiple times of rapid gas detection on the same transformer, the working efficiency is improved, multiple groups of data can be used for workers to accurately judge whether the transformer fails, automatic control detection is adopted in the whole process, the traditional manual detection is replaced, and the safety coefficient of workers and people is improved.
Description
Technical Field
The invention belongs to the technical field of transformer detection, and particularly relates to an automatic detection gas collection box for transformer gas and a use method thereof.
Background
The transformer body gas relay is provided with a gas collecting box for collecting light gas, people need to discharge oil on the gas collecting box beside the transformer to guide the gas down, the amount and the color of the gas are visually observed, then gas is taken, whether the transformer has faults or not is preliminarily judged by igniting the gas, the detection mode is not accurate, potential safety hazards exist, and the detection is not easy to be carried out for many times, if the transformer can not be judged to have faults by igniting the gas, the gas sample needs to be further subjected to chromatographic analysis, the whole process adopts manual sampling detection, the operation is complex, moreover, if the transformer has a fault, personnel take gas beside the transformer, once explosion happens, personal safety is directly endangered, therefore, the south network company issues a 'notice about temporary management and control measure requirements on the light gas alarm risk of the transformer for printing' in 2019, 12 months and 12 days, and needs to stop power and take gas for the 500kV transformer and the high-voltage transformer. Although no hard requirements are made for 110kV and 220kV transformers, there is also such a risk.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the automatic detection gas collecting box for replacing manual detection of light gas in the transformer, multiple times of automatic detection can be carried out, multiple groups of data are judged, the detection mode is accurate, meanwhile, the personal risk of workers getting gas beside the transformer is reduced by automatic detection, the operation is simple, and the workers can directly know whether the transformer fails.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a gas collecting box for automatically detecting transformer gas comprises a gas collecting box, a detection chamber and an electric cabinet; the left side of the electric cabinet is connected with the right side of the gas collecting box, and the top of the electric cabinet is connected with the bottom of the detection chamber; the gas collecting box is hollow, a cavity for collecting transformer oil and light gas is arranged at the hollow part, an opening is formed in the top of the gas collecting box, and a gas collecting box cover is arranged at the opening; the top of the gas collecting box cover is provided with an oil-gas conveying pipe communicated with the cavity; the oil and gas conveying pipe is provided with an electromagnetic valve A; the top of the gas collection box cover is provided with a gas taking hole communicated with the cavity, and the gas taking hole is provided with a sealing element; the detection chamber comprises a base, a cover body and a shield; the shield, the cover body and the base are hollow and are sequentially connected in a sealing manner from top to bottom; a data processor is arranged in the shield; a high-precision sensor is arranged in the cover body; an air storage tank is arranged in the base; the probe of the high-precision sensor extends into the gas storage tank; the gas storage tank is communicated with the cavity through a communicating pipe A, and the communicating pipe A is provided with an electromagnetic valve C; one end of the communicating pipe A close to the gas collecting box is provided with a filter screen; the electric cabinet is hollow, an integrated processor, a power supply and a vacuum pump are sequentially arranged in the hollow part from top to bottom, and a control screen is arranged on the surface of the electric cabinet; the vacuum pump is connected with a tee joint A arranged on the oil and gas conveying pipe through a communicating pipe B, the tee joint A is arranged at the lower end of the electromagnetic valve A, the communicating pipe B close to one end of the vacuum pump is provided with the electromagnetic valve B, the tee joint B is arranged between the electromagnetic valve B and the vacuum pump, and the tee joint B is connected with the gas storage tank through a communicating pipe C; the power supply is respectively and electrically connected with the electromagnetic valve A, the control screen, the data processor, the high-precision sensor, the integrated processor, the vacuum pump, the electromagnetic valve B and the electromagnetic valve C; the data processor is electrically connected with the high-precision sensor; the integrated processor is respectively and electrically connected with the control screen, the data processor, the electromagnetic valve A, the vacuum pump, the electromagnetic valve B and the electromagnetic valve C.
A small amount of transformer oil and overflowed light gas in the transformer enter the gas collecting box and the detection chamber through the oil-gas conveying pipe, the transformer gives out light alarm, the transformer oil automatically discharged into the gas collecting box leads the light gas, and the high-precision sensor automatically measures H2、CO、CO2、CH4、C2H6、C2H4、C2H2、O2、N2When the content of the 9 gases is equal, the data is uploaded to a data processor, analyzed and then transmitted to a control screen for display, so that a worker can accurately judge whether the transformer fails; the filter screen is added at the communicating pipe A to filter out transformer oil, so that the transformer oil is prevented from entering the air storage tank and contacting the detection probe of the high-precision sensor to influence the detection precision.
As a further technical improvement, the bottom of the gas collecting box is provided with an oil discharge valve communicated with the bottom of the cavity; and the top of the gas collection box cover is provided with a pressure reducing valve communicated with the cavity. After the transformer oil in the cavity is accumulated, the pressure reducing valve and the oil discharge valve are opened in sequence, and the transformer oil can be discharged more smoothly.
As a further technical improvement, the sealing element adopts a manual air intake valve. The manual gas taking valve is used for collecting a gas sample, and the manual gas taking valve is directly opened to take gas when chromatographic analysis is required.
As a further technical improvement, the gas collecting box is provided with an observation window for observing the amount of the variable pressure oil in the cavity.
As a further technical improvement, the bottom of the cavity is conical. The conical bottom of the cavity can better discharge the transformer oil.
A use method of a transformer gas automatic detection gas collection box comprises the following steps:
s1, before use, closing each valve, and butting the oil-gas delivery pipe with a connector of the transformer;
s2, controlling the control panel to start gas detection, opening the electromagnetic valve B and the electromagnetic valve C, and starting the vacuum pump to vacuumize the gas collection box, the gas storage tank and the corresponding pipeline; closing the electromagnetic valve B and the electromagnetic valve C, powering off the vacuum pump, and stopping the action to enable the gas collection box and the gas storage tank in the detection chamber to form a negative pressure state;
s3, opening the electromagnetic valve A, allowing a small amount of transformer oil and overflowed light gas in the transformer to enter the gas collecting box through the oil-gas conveying pipe, and pressing the transformer oil and the light gas entering the cavity in the negative pressure state to form oil-gas mixed gas; after the cavity is filled with light gas, the electromagnetic valve C is opened, and the gas storage tank in a negative pressure state filters the gas-oil mixture in the cavity through the filter screen and then sucks the gas-oil mixture into the gas storage tank;
s4, detecting the light gas flowing into the gas storage tank through a high-precision sensor, converting a detection result by a data processor, analyzing the result by an integrated processor, and finally displaying a first measurement result through a control screen;
s5, closing an electromagnetic valve C, starting a vacuum pump, pumping light gas in a gas storage tank, forming a vacuum negative pressure state by the gas storage tank again, closing the vacuum pump, opening the electromagnetic valve C, filtering transformer oil from cavity oil-gas mixed gas by a filter screen in the gas storage tank in the negative pressure state, sucking the filtered gas into the gas storage tank, detecting the light gas flowing into the gas storage tank by a high-precision sensor, converting a detection result by a data processor, analyzing the result by an integrated processor, displaying the detection result of the second time by a control screen, comparing the two measurement results by a worker, ensuring the accuracy of the measurement result, and accurately judging whether the transformer fails;
s6, if the transformer needs to be further confirmed to be fault-free, the manual air taking valve is used for taking air and testing to obtain a corresponding result, and the result is compared with the detection result displayed by the control screen for reference;
and S7, draining oil from the cavity regularly through an oil drain valve.
Compared with the prior art, the invention has the advantages and beneficial effects as follows:
1. according to the invention, the cavity is used for placing transformer oil and collecting light gas, air in the cavity and the gas storage tank is pumped away through the vacuum pump, the light gas flowing into the negative pressure gas storage tank is detected through the high-precision sensor, the detection result is transmitted to the control screen to be displayed, meanwhile, the gas storage tank is connected with the vacuum pump through the communication pipe C, the electromagnetic valve C is added to control gas in the gas storage tank to enter, the whole device can carry out multiple times of rapid gas detection on the same transformer, the working efficiency is improved, multiple groups of data can be used for workers to accurately judge whether the transformer fails, automatic control detection is adopted in the whole process, the traditional manual detection is replaced, and the safety coefficient of workers and people is improved.
2. The invention collects gas sample by arranging the manual gas taking valve, and directly opens the manual gas taking valve to take gas for chromatographic analysis, thus being simple, convenient, safe and practical.
3. According to the invention, the vacuum pump is additionally arranged to extract air in the gas collection box and the detection chamber in advance, so that the gas collection box, the detection chamber and corresponding pipelines can form a negative pressure state, light gas can enter more fully, air in the gas collection box and the detection chamber can be removed, and the detection precision is improved.
4. The invention increases the observation window for observing the oil quantity of the transformer oil in the cavity, so that the working personnel can find out that the oil quantity in the cavity is increased in time and discharge the oil in time.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the internal structure of the present invention.
FIG. 3 is a schematic view of the internal structure of the present invention.
FIG. 4 is a schematic top view of the present invention.
The attached drawings are as follows:
1-oil gas conveying pipe, 2-solenoid valve A, 3-tee joint A, 4-gas collecting box cover, 5-gas collecting box, 51-observation window, 6-manual gas taking valve, 7-communicating pipe A, 71-filter screen, 8-shield, 9-cover, 10-base, 101-gas storage tank, 11-electric cabinet, 12-control screen, 13-oil discharge valve, 14-data processor, 15-high precision sensor, 16-integrated processor, 17-power supply, 18-vacuum pump, 19-solenoid valve B, 20-solenoid valve C.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1:
a gas collecting box for automatically detecting transformer gas comprises a gas collecting box 5, a detection chamber and an electric cabinet 11; the left side of the electric cabinet 11 is connected with the right side of the gas collecting box 5, and the top of the electric cabinet 11 is connected with the bottom of the detection chamber; the gas collecting box 5 is hollow, a cavity for collecting transformer oil and light gas is arranged at the hollow part, an opening is formed in the top of the gas collecting box, and a gas collecting box cover 4 is installed at the opening; the top of the gas collection box cover 4 is provided with an oil-gas conveying pipe 1 communicated with the cavity; the oil and gas delivery pipe 1 is provided with an electromagnetic valve A2; the top of the gas collection box cover 4 is provided with a gas taking hole communicated with the cavity, and the gas taking hole is provided with a sealing element; the detection chamber comprises a base 10, a cover 9 and a shield 8; the shield 8, the cover 9 and the base 10 are hollow and are sequentially connected in a sealing manner from top to bottom; a data processor 14 is arranged in the shield 8; a high-precision sensor 15 is arranged in the cover body 9; an air storage tank 101 is arranged in the base 10; the probe of the high-precision sensor 15 extends into the gas storage tank 101; the air storage tank 101 is communicated with the cavity through a communication pipe A7, and an electromagnetic valve C20 is installed on the communication pipe A7; one end of the communicating pipe A7 close to the gas collecting box 5 is provided with a filter screen 71; the electric cabinet 11 is hollow inside, and the hollow part is from top to bottomAn integrated processor 16, a power supply 17 and a vacuum pump 18 are sequentially arranged, and a control screen 12 is arranged on the surface of the electric cabinet 11; the vacuum pump 18 is connected with a tee joint A3 arranged on the oil-gas conveying pipe 1 through a communicating pipe B, the tee joint A3 is arranged at the lower end of an electromagnetic valve A2, the communicating pipe B close to one end of the vacuum pump 18 is provided with an electromagnetic valve B19, a tee joint B is arranged between the electromagnetic valve B19 and the vacuum pump 18, and the tee joint B is connected with the gas storage tank 101 through a communicating pipe C; the power supply 17 is respectively electrically connected with the electromagnetic valve A2, the control screen 12, the data processor 14, the high-precision sensor 15, the integrated processor 16, the vacuum pump 18, the electromagnetic valve B19 and the electromagnetic valve C20; the data processor 14 is electrically connected with the high-precision sensor 15; the integrated processor 16 is electrically connected to the control panel 12, the data processor 14, the solenoid valve a2, the vacuum pump 18, the solenoid valve B19, and the solenoid valve C20, respectively. A small amount of transformer oil and overflowed light gas in the transformer enter the gas collecting box 5 and the detection chamber through the oil-gas conveying pipe 1, the transformer gives out light alarm, the transformer oil automatically discharged into the gas collecting box 5 leads the light gas, and the high-precision sensor 15 automatically measures H2、CO、CO2、CH4、C2H6、C2H4、C2H2、O2、N2When the contents of the 9 gases are equal, the data are uploaded to a data processor 14, analyzed and then transmitted to a control screen 12 to be displayed, so that a worker can accurately judge whether the transformer fails.
The application method of the embodiment comprises the following steps:
s1, before use, closing each valve, and butting the oil-gas delivery pipe 1 with a connector of a transformer;
s2, controlling the control panel to start gas detection, opening the electromagnetic valve B19 and the electromagnetic valve C20, and starting the vacuum pump 18 to vacuumize the gas collection box 5, the gas storage tank 101 and corresponding pipelines; closing the electromagnetic valve B19 and the electromagnetic valve C20, powering off the vacuum pump 18, and stopping the action to enable the gas collection box 5 and the gas storage tank 101 in the detection chamber to form a negative pressure state;
s3, opening an electromagnetic valve A2, allowing a small amount of transformer oil and overflowed light gas in the transformer to enter the gas collecting box 5 through the oil-gas conveying pipe 1, and pressing the transformer oil and the light gas entering the cavity in a negative pressure state to form oil-gas mixed gas; after the cavity is filled with light gas, the electromagnetic valve C20 is opened, and the gas storage tank 101 in a negative pressure state filters transformer oil from the gas mixture in the cavity through a filter screen and then sucks the gas mixture into the gas storage tank 101;
s4, detecting the light gas flowing into the gas storage tank 101 through the high-precision sensor 15, converting the detection result by the data processor 14, analyzing the result by the integrated processor 16, and finally displaying the first measurement result through the control screen 12;
s5, closing an electromagnetic valve C20, starting a vacuum pump 18, pumping light gas in the gas storage tank 101, enabling the gas storage tank 101 to form a vacuum negative pressure state again, closing the vacuum pump 18, opening an electromagnetic valve C20, filtering transformer oil from cavity oil-gas mixed gas by a filter screen in the gas storage tank 101 in the negative pressure state, sucking the filtered cavity oil-gas mixed gas into the gas storage tank 101, detecting the light gas flowing into the gas storage tank 101 through a high-precision sensor 15, converting a detection result by a data processor 14, analyzing the result by an integrated processor 16, and finally displaying a second detection result through a control screen 12, wherein a worker compares the two measurement results, so that the accuracy of the measurement result is ensured, and whether the transformer fails or not is accurately judged;
s6, if the transformer needs to be further confirmed to be fault-free, the manual air intake valve 6 is used for taking air and testing to obtain a corresponding result, and the result is compared with the detection result displayed by the control screen 12 for reference;
s7, the chamber is drained through the drain valve 13 periodically.
Example 2:
the difference from the embodiment 1 is that the bottom of the gas collecting box 5 is provided with an oil discharge valve 13 communicated with the bottom of the cavity; and the top of the gas collection box cover is provided with a pressure reducing valve communicated with the cavity. After the transformer oil in the cavity is accumulated, the pressure reducing valve and the oil discharge valve 13 are opened in sequence, and the transformer oil can be discharged more smoothly.
The working principle of this embodiment is the same as that of embodiment 1.
Example 3:
the difference from the embodiment 1 is that the sealing element adopts a manual air intake valve 6. The manual gas taking valve 6 is used for collecting gas samples, and the manual gas taking valve 6 is directly opened to take gas when chromatographic analysis is needed.
The working principle of this embodiment is the same as that of embodiment 1.
Example 4:
the difference from the embodiment 1 is that the gas collecting box 5 is provided with an observation window 51 for observing the amount of the variable pressure oil in the cavity.
The bottom of the cavity is conical. The conical bottom of the cavity can better discharge the transformer oil.
The working principle of this embodiment is the same as that of embodiment 1.
Claims (6)
1. The utility model provides a transformer gas automated inspection gas collection box which characterized in that: comprises a gas collection box (5), a detection chamber and an electric cabinet (11); the left side of the electric cabinet (11) is connected with the right side of the gas collecting box (5), and the top of the electric cabinet (11) is connected with the bottom of the detection chamber;
the gas collecting box (5) is hollow, a cavity for collecting transformer oil and light gas is arranged at the hollow part, an opening is formed in the top of the gas collecting box, and a gas collecting box cover (4) is installed at the opening; the top of the gas collection box cover (4) is provided with an oil-gas conveying pipe (1) communicated with the cavity; the oil-gas delivery pipe (1) is provided with an electromagnetic valve A (2); the top of the gas collection box cover (4) is provided with a gas taking hole communicated with the cavity, and the gas taking hole is provided with a sealing element;
the detection chamber comprises a base (10), a cover body (9) and a shield (8); the shield (8), the cover body (9) and the base (10) are hollow and are sequentially connected in a sealing manner from top to bottom; a data processor (14) is arranged in the shield (8); a high-precision sensor (15) is arranged in the cover body (9); an air storage tank (101) is arranged in the base (10); the probe of the high-precision sensor (15) extends into the gas storage tank (101); the gas storage tank (101) is communicated with the cavity through a communication pipe A (7), and the electromagnetic valve C (20) is installed on the communication pipe A (7); one end of the communicating pipe A (7) close to the gas collecting box (5) is provided with a filter screen (71);
the electric cabinet (11) is hollow, an integrated processor (16), a power supply (17) and a vacuum pump (18) are sequentially arranged in the hollow part from top to bottom, and a control screen (12) is arranged on the surface of the electric cabinet (11); the vacuum pump (18) is connected with a tee joint A (3) arranged on the oil-gas conveying pipe (1) through a communicating pipe B, the tee joint A (3) is arranged at the lower end of the electromagnetic valve A (2), the communicating pipe B close to one end of the vacuum pump (18) is provided with an electromagnetic valve B (19), the tee joint B is arranged between the electromagnetic valve B (19) and the vacuum pump (18), and the tee joint B is connected with the gas storage tank (101) through a communicating pipe C;
the power supply (17) is respectively and electrically connected with the electromagnetic valve A (2), the control screen (12), the data processor (14), the high-precision sensor (15), the integrated processor (16), the vacuum pump (18), the electromagnetic valve B (19) and the electromagnetic valve C (20); the data processor (14) is electrically connected with the high-precision sensor (15); the integrated processor (16) is respectively electrically connected with the control screen (12), the data processor (14), the electromagnetic valve A (2), the vacuum pump (18), the electromagnetic valve B (19) and the electromagnetic valve C (20).
2. The automatic detection gas collecting box for the transformer gas as claimed in claim 1, wherein: an oil discharge valve (13) communicated with the bottom of the cavity is arranged at the bottom of the gas collection box (5); and the top of the gas collection box cover is provided with a pressure reducing valve communicated with the cavity.
3. The automatic detection gas collecting box for the transformer gas as claimed in claim 1, wherein: the sealing element adopts a manual air taking valve (6).
4. The automatic detection gas collecting box for the transformer gas as claimed in claim 1, wherein: the gas collecting box (5) is provided with an observation window (51) for observing the amount of the variable-pressure oil in the cavity.
5. The automatic detection gas collecting box for the transformer gas as claimed in claim 1, wherein: the bottom of the cavity is conical.
6. The use method of the automatic detection gas collecting box for the transformer gas as claimed in any one of claims 1 to 5, wherein: the method comprises the following steps:
s1, before use, closing each valve, and butting the oil-gas delivery pipe (1) with a connection port of a transformer;
s2, controlling a control screen (12) to start gas detection, opening an electromagnetic valve B (19) and an electromagnetic valve C (20), and starting a vacuum pump (18) to vacuumize a gas collection box (5), a gas storage tank (101) and corresponding pipelines; closing the electromagnetic valve B (19) and the electromagnetic valve C (20), powering off the vacuum pump (18), and stopping the action to enable the cavity of the gas collecting box (5) and the gas storage tank (101) in the detection chamber to form a negative pressure state;
s3, opening the electromagnetic valve A (2), allowing a small amount of transformer oil and overflowed light gas in the transformer to enter the gas collecting box (5) through the oil-gas conveying pipe (1), and pressing the transformer oil and the light gas entering the cavity in a negative pressure state to form oil-gas mixed gas; after the cavity is filled with light gas, the electromagnetic valve C (20) is opened, and the gas storage tank (101) in a negative pressure state filters transformer oil from the gas mixture in the cavity through a filter screen and then sucks the gas mixture into the gas storage tank (101);
s4, detecting the light gas flowing into the gas storage tank (101) through the high-precision sensor (15), converting a detection result by the data processor (14), analyzing the result by the integrated processor (16), and finally displaying a first measurement result through the control screen (12);
s5, closing an electromagnetic valve C (20), starting a vacuum pump (18), pumping light gas in a gas storage tank (101), enabling the gas storage tank (101) to form a vacuum negative pressure state again, closing the vacuum pump (18), opening the electromagnetic valve C (20), filtering transformer oil from cavity oil-gas mixed gas by a filter screen by the gas storage tank (101) in the negative pressure state, sucking the transformer oil into the gas storage tank (101), detecting the light gas flowing into the gas storage tank (101) through a high-precision sensor (15), converting a detection result by a data processor (14), analyzing the result by an integrated processor (16), and finally displaying a second detection result through a control screen (12), wherein a worker compares the two measurement results to ensure that the measurement result is accurate and accurately judges whether the transformer fails;
s6, if the transformer needs to be further confirmed to be fault-free, the manual air intake valve (6) is used for taking air and testing to obtain a corresponding result, and the result is compared with the detection result displayed by the control screen (12) for reference;
s7, the cavity needs to be drained periodically through an oil drain valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011260206.XA CN112461999A (en) | 2020-11-12 | 2020-11-12 | Automatic detection gas collection box for transformer gas and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011260206.XA CN112461999A (en) | 2020-11-12 | 2020-11-12 | Automatic detection gas collection box for transformer gas and use method thereof |
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| CN112461999A true CN112461999A (en) | 2021-03-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216750A (en) * | 2021-11-19 | 2022-03-22 | 广西电网有限责任公司柳州供电局 | Intelligent gas collection box of transformer |
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