CN212060496U - Device for detecting simulation action of double-float gas relay of 220kV transformer - Google Patents
Device for detecting simulation action of double-float gas relay of 220kV transformer Download PDFInfo
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- CN212060496U CN212060496U CN201921872567.2U CN201921872567U CN212060496U CN 212060496 U CN212060496 U CN 212060496U CN 201921872567 U CN201921872567 U CN 201921872567U CN 212060496 U CN212060496 U CN 212060496U
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- 238000004088 simulation Methods 0.000 title claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 28
- 230000004224 protection Effects 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of the transformer protection device, especially, relate to a two float gas relay simulation action detection device of 220kV transformer. The utility model comprises a detected gas relay, wherein, the two ends of the detected gas relay are respectively connected with a butt flange and are arranged on a fixed platform of the device; the butt flanges at the two ends are respectively connected with an oil tank of the oil injection circulating system through guide pipes; the detected buchholz relay is correspondingly connected with four terminals on the buchholz relay protection loop detection system respectively. The utility model discloses but established accurate detection 220kV transformer buchholz relay under the different operating modes simulation action detection device of protection circuit insulation resistance, satisfied 220kV transformer buchholz relay protection return circuit test requirement, the device has simple structure, can effectively detect buchholz relay protection action problem of inefficacy, is suitable for and widelys popularize and apply in the electric power trade.
Description
Technical Field
The utility model belongs to the technical field of the transformer protection device, especially, relate to a two float gas relay simulation action detection device of 220kV transformer.
Background
The 220kV transformer relay is the most important protection device of the transformer, the relay is divided into an oil flow relay and a gas relay, the gas relay is divided into a single-floater gas relay and a double-floater gas relay, the double-floater gas relay is used for protecting the most comprehensive and widely applied transformer, an upper floater of the double-floater gas relay is used for oil shortage alarm of the transformer, a lower floater is used for oil shortage trip of the transformer, and an oil flow baffle is used for trip of a breaker when oil flow surges violently. The accuracy of the action of the double-float gas relay is related to the normal operation of the transformer, the failure of the protection of the transformer can be caused by the failure of the float or the baffle in the double-float relay, and the error tripping accident of the transformer can be caused by the error action. At present, a device capable of simulating and detecting the action of the double-float gas relay does not exist.
Disclosure of Invention
To the technical problem that exists among the above-mentioned prior art, the utility model provides a two float gas relay of 220kV transformer simulation action detection device, its purpose is in order to provide a simple structure's detection device, can realize under the required different operating modes of analogue test, whether can normally work test 220kV transformer two float gas relay's "light gas warning" and "heavy gas warning" to and the insulation resistance value under the alarm circuit on-state, be used for checking up gas relay.
In order to realize the purpose of the utility model, the utility model discloses a realize through following technical scheme:
the device for detecting the simulated actions of the double-float gas relay of the 220kV transformer comprises a detected gas relay, wherein two ends of the detected gas relay are respectively connected with a butt flange and are arranged on a fixed platform of the device; the butt flanges at the two ends are respectively connected with an oil tank of the oil injection circulating system through guide pipes; and the detected buchholz relay is correspondingly connected with four terminals on the buchholz relay protection loop detection system respectively.
The bottom of the oil tank is communicated with an oil pump through an oil inlet pipe of the oil pump, and the insulating oil is connected with a guide pipe A at one end of the detected gas relay through the guide pipe A by the oil pump; the other end of the detected gas relay is connected into the oil tank through a guide pipe B.
The oil tank is made of transparent materials, and the guide pipe comprises a guide pipe A and a guide pipe B.
And the guide pipe B is connected with a butterfly valve.
The detected gas relay is a 220kV transformer double-float gas relay, and is provided with two protection alarm loops of a light gas alarm and a heavy gas alarm; the upper cover of the detected gas relay is connected with four terminals of two loops.
The gas relay protection circuit detection system includes: the device comprises two independent digital insulation ohmmeters A and B, wherein two groups of 4 outgoing lines of the digital insulation ohmmeters A and B are arranged; the outgoing line of each digital insulation resistance meter is provided with two detection system connecting wires which are respectively connected with a light gas alarm loop terminal and a heavy gas alarm loop terminal of a detected gas relay.
The device fixing platform is characterized in that platform supporting legs are respectively connected to the lower parts of two ends of a platform surface, the bottom of one platform supporting leg is also fixedly connected with a U-shaped platform, and the heights of baffles at two ends of the U-shaped platform are different; the height of the inner baffle is one third to one half of the height of the outer baffle.
The device fixing platform is made of stainless steel materials and is of an integrated structure, and all connecting parts are fixedly connected in a welding mode.
The oil tank is arranged on the U-shaped platform; the butt flange and the detected gas relay are arranged on the platform surface of the platform.
The utility model has the advantages and beneficial effects that:
the utility model discloses an adjust insulating oil velocity of flow, buchholz relay interior oil level, the required operating mode of three kinds of alarm state of simulation buchholz relay, through the insulation resistance value of test protection device warning loop, the accuracy of test buchholz relay protection action is detected in the condition that switches on under corresponding operating mode. The device's aim at establishes the simulation action detection device that can accurately detect protection circuit insulation resistance under the different operating modes of 220kV transformer buchholz relay, satisfies 220kV transformer buchholz relay protection return circuit test requirement, and the device has simple structure, effectively detects buchholz relay protection action failure problem, is suitable for popularizing and applying in the electric power industry.
Drawings
In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, but it should be understood that the scope of the present invention is not limited by the specific embodiments. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the utility model for simulating the on-site working condition at the initial stage of oil loss of the transformer and detecting the conduction condition of the light gas alarm loop;
FIG. 3 is a schematic view of the utility model for simulating the on-site working condition at the later stage of oil loss of the transformer and detecting the conduction condition of the heavy gas alarm loop;
fig. 4 is a schematic structural view of the fixing platform of the device of the present invention.
In the figure: the device comprises a digital insulation ohmmeter A1, a digital insulation ohmmeter B2, a gas relay protection loop detection system 3, a detection system wiring 4, a light gas alarm loop wiring terminal 5, a heavy gas alarm loop wiring terminal 6, a butt flange 7, a guide pipe A8, a guide pipe B88, a detected gas relay 9, a gas relay exhaust valve 10, a gas relay upper floater 11, a gas relay lower floater 12, a gas relay oil flow baffle 13, an oil tank 14, an oil pump 15, a butterfly valve 16, an oil pump oil inlet pipe 17, a device fixing platform 18, a platform surface 19, a platform support leg 20, a U-shaped platform 21, an inner baffle 22 and an outer baffle 23.
Detailed Description
The utility model relates to a two float buchholz relay of 220kV transformer simulation action detection device, as shown in fig. 1, fig. 1 is the utility model discloses the schematic structure. The utility model discloses the device is including being detected buchholz relay 9, oiling circulating system and insulation resistance detecting system. And an oil injection circulation system and an insulation resistance detection system are respectively connected to two ends of the gas relay 9 to be detected.
As shown in the figure, two ends of the detected gas relay 9 are respectively connected with a butt flange 7, and the butt flanges 7 at the two ends are respectively fixedly connected with the guide pipes at the two ends in a welding mode. The bottom of the oil tank 14 is communicated with an oil pump 15 through an oil pump inlet pipe 17 to provide insulating oil for the oil pump 15. The insulating oil is pressurized by an oil pump 15 and then is transmitted and connected into a detected gas relay 9 through a conduit A8, the insulating oil flows out from an outflow end connected with the other end of the detected gas relay 9, the outflow end is a conduit B88, a butterfly valve 16 is installed on a conduit B88, an outflow end conduit B88 is communicated into the oil tank 14 after passing through the butterfly valve 16, and the insulating oil is sent back to the oil tank 14.
As shown in fig. 4, fig. 4 is a schematic structural diagram of the fixing platform of the device in the present invention. The device fixing platform 18 is used for fixing the oil tank 14, the oil pump 15 and the butt flange 7. The device fixing platform 18 is characterized in that platform supporting legs 20 are respectively and fixedly connected to the lower portions of two ends of a platform surface 19, a U-shaped platform 21 is further fixedly connected to the bottom of one platform supporting leg, baffles at two ends of the U-shaped platform 21 are unequal in height, an inner baffle 22 located on the inner side of the platform surface is shorter, another outer baffle 23 located on the outer side of the platform surface is higher, and the heights of the outer baffles 23 and the platform surface are the same. The height of the inner baffle 22 is one third to one half of the height of the outer baffle 23.
The device fixing platform 18 is made of stainless steel and is of an integrated structure, and all connecting parts are fixedly connected in a welding mode.
The detected gas relay 9 adopts a 220kV transformer double-floater gas relay. The detected gas relay 9 has two protection alarm loops of light gas alarm and heavy gas alarm. Specifically, the upper cover of the detected buchholz relay 9 is connected with four terminals of two loops, and the four terminals of the buchholz relay protection loop detection system 3 are respectively and correspondingly connected with the four terminals on the detected buchholz relay 9. When any group of loops is conducted, the instrument of the gas relay protection loop detection system 3 correspondingly displays the insulation resistance value of the loop and tests the conduction state of the loop.
The utility model discloses two float buchholz relay of 220kV transformer simulation action detection device passes through the speed that oiling circulation system control was detected the height of buchholz relay inside oil level and oil stream, detects full oil level, 2/3 oil level, 1/3 oil level and oil stream speed respectively when great, the break-make condition and the size of insulation resistance value in "light gas warning" and "heavy gas warning" return circuit, the check-up is detected buchholz relay 9 and whether can normally work, plays the effect of protection transformer.
The detected gas relay 9 comprises three action protections of an upper gas relay floater 11, a lower gas relay floater 12 and a gas relay oil flow baffle 13, when the oil level in the detected gas relay 9 is lowered, the upper gas relay floater 11 firstly sinks along with the oil level, at the moment, a loop corresponding to the upper gas relay floater 11 is conducted, and the detected gas relay 9 sends a light gas alarm signal outwards; when the oil level in the gas relay 9 to be detected continues to drop, the lower float 12 of the gas relay sinks along with the oil level, at the moment, a loop corresponding to the lower float 12 of the gas relay is conducted, and the gas relay 9 to be detected sends a heavy gas alarm signal outwards; when the oil flow speed passing through the gas relay exceeds a certain value, the oil flow baffle 13 of the gas relay in the gas relay is flushed, the oil flow baffle 13 of the gas relay and the lower floater 12 of the gas relay are both a heavy gas alarm loop, the loop corresponding to the lower floater 12 of the gas relay is conducted at the moment, and a detected gas relay 9 sends out a heavy gas alarm signal.
And the oil injection circulating system is used for providing insulating oil for the tested gas relay and simulating the flow of the insulating oil in the transformer pipeline. The method comprises the following steps: a fuel tank 14, a fuel pump 15, conduits and butterfly valves 16 and a device mounting platform 18. The oil tank 14 is made of transparent material, and the guide pipes comprise a guide pipe A8 and a guide pipe B88. Specifically, two butting flanges 7 are fixedly arranged on a platform table top 19 on a fixed platform 18, wherein one butting flange 7 is connected with an oil pump 15 through a guide pipe A8, and the oil pump 15 is connected with the bottom of an oil tank 14 through an oil pump oil inlet pipe 17 at the lower end; the other docking flange 7 is connected to the tank 14 via a conduit B88, and a butterfly valve 16 is mounted on the side conduit B88 to control the flow of oil. The oil filling circulation system controls the oil quantity and the oil flow fluctuation in the detected gas relay 9 through controlling the oil pump 15 and the oil discharging butterfly valve 16. During operation, the oil pump 15 is supplied with oil through the conduit 17 at the bottom of the oil tank 14, the insulating oil pressurized by the oil pump 15 is injected into the detected gas relay 9 through the conduit A8, and flows out through the conduit B88 at the other outflow end of the detected gas relay 9, and the other end of the outflow end conduit B88 is connected to the inside of the oil tank 14.
The buchholz relay protection circuit detection system 3 includes: the device comprises two independent digital insulation resistance meters A1 and B2, wherein two groups of 4 outgoing lines of the digital insulation resistance meter A1 and the digital insulation resistance meter B2 are arranged, and two detection system connecting lines 4 are arranged on the outgoing line of each digital insulation resistance meter. The insulation detection system wiring 4 adopts metal clamps as joints and is respectively connected with a light gas alarm loop terminal 5 and a heavy gas alarm loop terminal 6 of a detected gas relay 9.
As shown in fig. 2 and 3, fig. 2 is the utility model discloses the on-the-spot operating mode at simulation transformer oil loss initial stage detects "light gas warning" return circuit condition of switching on schematic diagram, and fig. 3 is the utility model discloses the on-the-spot operating mode at simulation transformer oil loss later stage detects "heavy gas warning" return circuit condition of switching on schematic diagram.
When the specific implementation, the utility model discloses 220kV transformer double float gas relay simulation action detection method, including following step:
firstly, the gas relay 9 to be detected is placed on the device fixing platform 18, and two ends of the gas relay are fixed by the butt flange 7, so that all connections are firm and free from looseness. The wiring of a digital insulation resistance meter A1 in the gas relay protection circuit detection system 3 is connected with a light gas alarm circuit wiring terminal 5 at the upper part of a gas relay 9, and the wiring of a digital insulation resistance meter B2 is connected with a heavy gas alarm circuit wiring terminal 6 at the upper part of the gas relay 9. The power switches of the digital insulation resistance meter a1 and the digital insulation resistance meter B2 are opened. Then, the transformer insulating oil is injected into the oil tank 14, the butterfly valve 16 is closed, the gas relay exhaust valve 10 on the upper part of the gas relay 9 is opened, the oil pump 15 is opened, the insulating oil in the oil tank 14 is communicated to the oil pump 15 through the oil pump oil inlet pipe 17 at the bottom of the oil tank 14 to be pressurized, the insulating oil is sent into the gas relay 9 to be detected through the guide pipe A8, and the oil inlet amount is accurately controlled by the oil pump 15. The height of the oil level in the detected gas relay 9 can be observed through a transparent oil window on the front side of the gas relay, the oil pump 15 is closed after the detected gas relay 9 is filled with oil, and the gas relay exhaust valve 10 is closed after the gas relay is kept still for a period of time to discharge bubbles in the insulating oil. And finally, opening a butterfly valve 16 to discharge oil, gradually reducing the oil level in the detected gas relay 9 at the moment, closing the butterfly valve 16 when the oil level is reduced to the height of the root part of the floater 11 on the gas relay, reading the degree of the digital insulation resistance meter B2, and recording the conduction condition of the light gas alarm loop. And opening the butterfly valve 16 again for oil discharge, continuously reducing the oil level in the detected gas relay 9, closing the butterfly valve 16 when the oil level is reduced to the height of the root part of the lower floater 12 of the gas relay, reading the degree of the digital insulation resistance meter A1, and recording the conduction condition of the heavy gas alarm loop. And opening a butterfly valve 16 to discharge oil, opening the oil pump 15 again to inject oil, reading the degree of the digital insulation resistance meter A1, and recording the conduction condition of the heavy gas alarm circuit when the oil flow baffle of the double-floating ball gas relay acts.
The inner baffle 13 of the gas relay is fixed below the upper floater 11 of the gas relay for the self-contained structure of the gas relay and is used for blocking the lowest sinking position of the upper floater 11 of the gas relay.
The aforesaid specific implementation mode is the utility model discloses a preferred embodiment, can not be right the utility model discloses can be according to the utility model discloses a technical scheme and actual conditions determine specific implementation mode, and other any change or other equivalent replacement modes of doing for deviating from the utility model discloses a technical scheme all contain within the scope of protection of the utility model.
Claims (9)
1.220kV transformer double-float gas relay simulation action detection device, including being detected gas relay (9), characterized by: two ends of the detected gas relay (9) are respectively connected with a butt flange (7) and are arranged on a device fixing platform (18); the butt flanges (7) at the two ends are respectively connected with an oil tank (14) of an oil injection circulating system through guide pipes; the detected gas relay (9) is correspondingly connected with four terminals on the gas relay protection circuit detection system (3) respectively.
2. The device for detecting the simulated motion of the double-float gas relay of the 220kV transformer as claimed in claim 1, wherein: the bottom of the oil tank (14) is communicated with an oil pump (15) through an oil pump oil inlet pipe (17), and the insulating oil is connected with a guide pipe A (8) at one end of a detected gas relay (9) through the oil pump (15) through a guide pipe A (8); the other end of the detected gas relay (9) is connected to the inside of the oil tank (14) through a conduit B (88).
3. The device for detecting the simulated motion of the double-float gas relay of the 220kV transformer as claimed in claim 1, wherein: the oil tank (14) is made of transparent materials, and the guide pipe comprises a guide pipe A (8) and a guide pipe B (88).
4. The device for detecting the simulated motion of the double-float gas relay of the 220kV transformer as claimed in claim 2, wherein: the guide pipe B (88) is connected with a butterfly valve (16).
5. The device for detecting the simulated motion of the double-float gas relay of the 220kV transformer as claimed in claim 1, wherein: the detected gas relay (9) is a 220kV transformer double-floater gas relay, and the detected gas relay (9) is provided with a light gas alarm and a heavy gas alarm protection alarm loop; the upper cover of the detected gas relay (9) is connected with four terminals of two loops.
6. The device for detecting the simulated motion of the double-float gas relay of the 220kV transformer as claimed in claim 1, wherein: the gas relay protection circuit detection system (3) comprises: the device comprises two independent digital insulation ohmmeters A (1) and B (2), wherein two groups of 4 outgoing lines of the digital insulation ohmmeters A (1) and B (2) are arranged; the outgoing line of each digital insulation resistance meter is provided with two detection system connection wires (4) which are respectively connected with a light gas alarm loop terminal (5) and a heavy gas alarm loop terminal (6) of a detected gas relay (9).
7. The device for detecting the simulated motion of the double-float gas relay of the 220kV transformer as claimed in claim 1, wherein: the device fixing platform (18) is characterized in that platform supporting legs (20) are respectively connected to the lower parts of two ends of a platform surface (19), a U-shaped platform (21) is fixedly connected to the bottom of one platform supporting leg, and the heights of baffles at two ends of the U-shaped platform (21) are different.
8. The device for detecting the simulated motion of the double-float gas relay of the 220kV transformer as claimed in claim 1, wherein: the device fixing platform (18) is made of stainless steel materials and is of an integrated structure, and all connecting parts are fixedly connected in a welding mode.
9. The device for detecting the simulated motion of the double-float gas relay of the 220kV transformer as claimed in claim 1, wherein: the oil tank (14) is arranged on the U-shaped platform (21); the butt flange (7) and the gas relay (9) to be detected are arranged on the platform surface (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921872567.2U CN212060496U (en) | 2019-11-02 | 2019-11-02 | Device for detecting simulation action of double-float gas relay of 220kV transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921872567.2U CN212060496U (en) | 2019-11-02 | 2019-11-02 | Device for detecting simulation action of double-float gas relay of 220kV transformer |
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| CN212060496U true CN212060496U (en) | 2020-12-01 |
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| CN201921872567.2U Active CN212060496U (en) | 2019-11-02 | 2019-11-02 | Device for detecting simulation action of double-float gas relay of 220kV transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794294A (en) * | 2019-11-02 | 2020-02-14 | 国网辽宁省电力有限公司电力科学研究院 | Device and method for detecting simulation action of double-float gas relay of 220kV transformer |
| CN113257612A (en) * | 2021-05-25 | 2021-08-13 | 国网河北省电力有限公司检修分公司 | Gas relay |
-
2019
- 2019-11-02 CN CN201921872567.2U patent/CN212060496U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794294A (en) * | 2019-11-02 | 2020-02-14 | 国网辽宁省电力有限公司电力科学研究院 | Device and method for detecting simulation action of double-float gas relay of 220kV transformer |
| CN110794294B (en) * | 2019-11-02 | 2024-06-25 | 国网辽宁省电力有限公司电力科学研究院 | Device and method for detecting simulated action of 220kV transformer double-floater gas relay |
| CN113257612A (en) * | 2021-05-25 | 2021-08-13 | 国网河北省电力有限公司检修分公司 | Gas relay |
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