CN213400842U - On-line monitoring equipment for vacuum on-load tap-changer acetylene of transformer - Google Patents
On-line monitoring equipment for vacuum on-load tap-changer acetylene of transformer Download PDFInfo
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- CN213400842U CN213400842U CN202022571349.4U CN202022571349U CN213400842U CN 213400842 U CN213400842 U CN 213400842U CN 202022571349 U CN202022571349 U CN 202022571349U CN 213400842 U CN213400842 U CN 213400842U
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Abstract
The utility model discloses a transformer vacuum on-load tap-changer acetylene on-line monitoring device, wherein in the monitoring device, the transformer on-load tap-changer comprises an oil chamber for containing oil, one end of an oil conservator is connected with the oil chamber, the other end of the oil conservator is connected with a respirator, and a manual exhaust valve is arranged in the oil chamber to accumulate gas in the oil chamber; the gas detector is arranged in the oil chamber to detect whether gas exists in the oil chamber, the oil-gas separation chamber is connected and communicated with the manual exhaust valve through the first exhaust solenoid valve, the floating ball is arranged in the oil-gas separation chamber in a floating mode and is located below the exhaust oil level detector and the oil injection oil level detector, when the gas from the manual exhaust valve enters the oil-gas separation chamber through the first exhaust solenoid valve, the ejector pin arranged on the floating ball triggers the oil injection oil level detector, and when the oil level of the oil-gas separation chamber descends, the ejector pin of the floating ball triggers the exhaust oil level detector.
Description
Technical Field
The utility model belongs to the technical field of the transformer vacuum on-load tap-changer, especially a transformer vacuum on-load tap-changer acetylene on-line monitoring equipment.
Background
The vacuum on-load tap-changer of the transformer needs to be monitored to early detect the internal defects of the vacuum on-load tap-changer of the transformer, and the monitoring in the prior art is not real-time, has poor anti-interference performance and low monitoring precision. There is a need for an on-line monitoring device for a vacuum on-load tap-changer of a transformer, which has high sensitivity, strong anti-interference performance and on-line real-time monitoring.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is well known in this country to a person of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a transformer vacuum on-load tap-changer acetylene on-line monitoring equipment.
The utility model aims to realize the technical proposal that the on-line monitoring device for the vacuum on-load tap changer acetylene of the transformer comprises,
a transformer on-load tap-changer, comprising,
an oil chamber which accommodates oil,
the oil conservator is provided with an oil chamber, one end of the oil conservator is connected with the oil chamber, the other end of the oil conservator is connected with the breather so as to provide oil pressure to the oil chamber, and a manual exhaust valve is arranged in the oil chamber so as to accumulate gas in the oil chamber;
a gas detector provided in the oil chamber to detect whether gas exists in the oil chamber,
an oil-gas separation chamber which is connected and communicated with the manual exhaust valve through a first exhaust electromagnetic valve, the oil-gas separation chamber comprises,
the floating ball is arranged in the oil-gas separation chamber in a floating manner and is positioned below the exhaust oil level detector and the oil injection level detector, when gas from the manual exhaust valve enters the oil-gas separation chamber through the first exhaust electromagnetic valve, the thimble arranged on the floating ball triggers the oil injection level detector, when the oil level of the oil-gas separation chamber descends, the thimble of the floating ball triggers the exhaust oil level detector,
one end of the oil pump is communicated with the oil-gas separation chamber, the other end of the oil pump is connected with the oil chamber through an oil injection electromagnetic valve,
a gas detection chamber communicated with the oil-gas separation chamber to contain gas from the manual exhaust valve, the gas detection chamber being provided with a second exhaust solenoid valve,
an acetylene detector arranged in the gas detection chamber,
a filling breather communicated with the gas detection chamber via an exhaust solenoid valve,
and the monitoring unit is connected with the acetylene detector, the gas detector, the first exhaust electromagnetic valve, the second exhaust electromagnetic valve, the exhaust oil level detector, the oil filling level detector and the oil pump.
In the on-line monitoring equipment for the transformer vacuum on-load tap changer acetylene, a gas relay is arranged between the conservator and the oil chamber.
In the on-line monitoring equipment for the transformer vacuum on-load tap changer acetylene, the first exhaust electromagnetic valve is a normally closed valve, and the second exhaust electromagnetic valve is a normally open valve.
In the on-line monitoring equipment for the transformer vacuum on-load tap-changer acetylene, the oil-gas separation chamber further comprises an exhaust motor which is connected with the oil-gas separation chamber through an exhaust solenoid valve, and in response to the acetylene detector detecting the acetylene, the monitoring unit sends a starting signal to the exhaust solenoid valve and the exhaust motor to evacuate the gas in the oil-gas separation chamber.
In the on-line monitoring device for the transformer vacuum on-load tap changer acetylene, the monitoring unit comprises an exhaust loop which sends a starting signal to the exhaust solenoid valve and the exhaust motor.
In the on-line monitoring equipment for the acetylene of the vacuum on-load tap-changer of the transformer, the monitoring unit comprises a control circuit, and the control circuit comprises a gas detection loop, an exhaust loop, an oil level detection loop, an oil injection loop and an acetylene detection loop.
In the on-line monitoring equipment for the transformer vacuum on-load tap changer acetylene, an oil chamber is connected with the upper side of an oil-gas separation chamber through an exhaust pipeline, the oil chamber is connected with the lower side of the oil-gas separation chamber through an oil injection pipeline, and the exhaust pipeline and the oil injection pipeline are connected with the oil chamber through a three-way valve.
In the on-line monitoring equipment for the transformer vacuum on-load tap changer acetylene, the oil injection pipeline is provided with a manual oil sampling valve.
In the on-line monitoring equipment for the transformer vacuum on-load tap-changer acetylene, after the exhaust oil level detector is triggered by the thimble of the floating ball, the oil level data of the oil-gas separation chamber is measured and sent to the monitoring unit.
In the on-line monitoring equipment for the transformer vacuum on-load tap-changer acetylene, the oil injection and oil level detector is triggered by the thimble of the floating ball, measures the oil level data of the oil-gas separation chamber and sends the data to the monitoring unit.
Compared with the prior art, the utility model has the advantages of it is following: the utility model discloses carry out the real-time on-line monitoring of transformer vacuum on-load tap-changer acetylene based on the single acetylene measurement, it is strong and the monitoring precision is high to show sensitivity, interference immunity that has improved the monitoring, can online real-time monitoring.
Drawings
Various other advantages and benefits of the present invention will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort. Also, like parts are designated by like reference numerals throughout the drawings.
In the drawings:
fig. 1 is a schematic structural diagram of an acetylene on-line monitoring device for a vacuum on-load tap-changer of a transformer according to an embodiment of the present invention;
fig. 2 is a schematic control circuit diagram of a monitoring unit of an acetylene on-line monitoring device for a vacuum on-load tap-changer of a transformer according to another embodiment of the present invention;
fig. 3 is a schematic signal circuit diagram of a monitoring unit of an acetylene on-line monitoring device for a vacuum on-load tap-changer of a transformer according to another embodiment of the present invention.
The invention is further explained below with reference to the drawings and examples.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to fig. 1 to 3. While specific embodiments of the invention are shown in the drawings, it will be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, various names may be used to refer to a component. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The following description is of the preferred embodiment of the invention, and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the invention. The protection scope of the present invention is subject to the limitations defined by the appended claims.
For the purpose of facilitating understanding of the embodiments of the present invention, the following description will be given by way of example with reference to the accompanying drawings, and the drawings do not limit the embodiments of the present invention.
For better understanding, as shown in fig. 1, the on-line monitoring device for acetylene of the vacuum on-load tap-changer of the transformer comprises,
a transformer on-load tap-changer, comprising,
an oil chamber 4, which contains oil,
an oil conservator 2, one end of which is connected with the oil chamber 4, the other end is connected with the respirator 1 to provide oil pressure to the oil chamber 4,
a manual exhaust valve 5 provided in the oil chamber 4 to accumulate gas in the oil chamber 4;
a gas detector 6 provided in the oil chamber 4 to detect whether the oil chamber 4 has a gas,
an oil-gas separation chamber 8 which is connected and communicated with the manual exhaust valve 5 through a first exhaust solenoid valve 7, wherein the oil-gas separation chamber 8 comprises,
a floating ball 13 floatingly disposed in the oil-gas separation chamber 8 and located below the exhaust oil level detector 15 and the oil filling level detector 16, wherein when gas from the manual exhaust valve 5 enters the oil-gas separation chamber 8 through the first exhaust solenoid valve 7, a thimble 14 disposed in the floating ball 13 triggers the oil filling level detector 16, and when the oil level of the oil-gas separation chamber 8 descends, the thimble 14 of the floating ball 13 triggers the exhaust oil level detector 15,
one end of the oil pump 9 is communicated with the oil-gas separation chamber 8, the other end of the oil pump is connected with the oil chamber 4 through an oil injection electromagnetic valve 10,
a gas detection chamber 19 communicating with the oil-gas separation chamber 8 to receive gas from the manual exhaust valve 5, the gas detection chamber 19 being provided with a second exhaust solenoid valve 17,
an acetylene detector 20 provided in the gas detection chamber 19 to detect the presence or absence of acetylene in the gas,
and the monitoring unit is connected with the acetylene detector 20, the gas detector 6, the first exhaust solenoid valve 7, the second exhaust solenoid valve 17, the exhaust oil level detector 15, the oil filling level detector 16 and the oil pump 9.
In response to the gas detector 6 detecting gas, the monitoring unit opens the first exhaust solenoid valve 7, the floating ball 13 floats up to drive the thimble 14 to trigger the oil filling level detector 16 and close the first exhaust solenoid valve 7,
in response to the detection of acetylene by the acetylene detector 20, the monitoring unit sends a closing signal to said second exhaust solenoid valve 17 to close the gas detection chamber 19, and sends an alarm signal,
in response to the oil filling signal, the monitoring unit sends an instruction to start the oil pump 9, the floating ball 13 descends along with the oil level to drive the ejector pin 14 to leave the oil filling level detector 16, and the oil pump 9 is closed after the floating ball descends to a certain position to trigger the exhaust oil level detector 15.
In the preferred embodiment of the on-line monitoring equipment for the transformer vacuum on-load tap-changer acetylene, a gas relay 3 is arranged between the oil conservator 2 and the oil chamber 4.
In the preferred embodiment of the on-line monitoring equipment for the acetylene of the vacuum on-load tap-changer of the transformer, the first exhaust electromagnetic valve 7 is a normally closed valve, and the second exhaust electromagnetic valve 17 is a normally open valve.
In the preferred embodiment of the on-line monitoring device for acetylene of the vacuum on-load tap-changer of the transformer, the oil-gas separation chamber 8 further comprises an exhaust motor 18 which is connected with the oil-gas separation chamber 8 through an exhaust solenoid valve, and in response to the detection of acetylene by the acetylene detector 20, the monitoring unit sends a start signal to the exhaust solenoid valve and the exhaust motor 18 to evacuate the gas in the oil-gas separation chamber 8.
In the preferred embodiment of the on-line monitoring device for acetylene in the vacuum on-load tap-changer of the transformer, the monitoring unit comprises an exhaust loop which sends a starting signal to the exhaust solenoid valve and the exhaust motor 18.
In the preferred embodiment of the on-line monitoring equipment for the transformer vacuum on-load tap-changer acetylene, the monitoring unit comprises a control circuit, and the control circuit comprises a gas detection loop, an exhaust loop, an oil level detection loop, an oil injection loop and an acetylene detection loop.
In the preferred embodiment of the on-line monitoring equipment for the transformer vacuum on-load tap changer acetylene, the oil chamber 4 is connected with the upper side of the oil-gas separation chamber 8 through an exhaust pipeline, the oil chamber 4 is connected with the lower side of the oil-gas separation chamber 8 through an oil injection pipeline, and the exhaust pipeline and the oil injection pipeline are connected with the oil chamber 4 through a three-way valve 12.
In the preferred embodiment of the on-line monitoring equipment for the transformer vacuum on-load tap changer acetylene, the oil injection pipeline is provided with a manual oil sampling valve.
In the preferred embodiment of the on-line monitoring equipment for the transformer vacuum on-load tap-changer acetylene, after the exhaust oil level detector 15 is triggered by the ejector pin 14 of the floating ball 13, the oil level data of the oil-gas separation chamber 8 is measured and sent to the monitoring unit.
In the preferred embodiment of the on-line monitoring equipment for the transformer vacuum on-load tap-changer acetylene, the oil-injection level detector 16 is triggered by the ejector pin 14 of the floating ball 13, measures the oil level data of the oil-gas separation chamber 8 and sends the oil level data to the monitoring unit.
In the preferred embodiment of the on-line monitoring equipment for the transformer vacuum on-load tap-changer acetylene, the on-line monitoring equipment for the transformer vacuum on-load tap-changer acetylene comprises an air extractor, an oil-gas separator and a gas detector.
To further understand the present invention, in one embodiment, the fill line is provided with a manual oil sampling valve 11.
In one embodiment, the oil-filled breather 22 is connected to the gas detection chamber 19 via an exhaust solenoid valve 21. When trace gas is generated in the oil chamber 4 of the transformer vacuum on-load tap-changer, the gas is accumulated in the manual exhaust valve 5 of the oil chamber of the transformer on-load tap-changer, the gas detector 6 detects that gas exists in the gas collecting device, the first electromagnetic valve 7 is opened, the gas in the manual exhaust valve 5 is pressed to the oil-gas separation chamber 8 by means of oil pressure in the oil conservator 2, once the gas in the manual exhaust valve 5 is exhausted, the floating ball 13 floats upwards to drive the thimble 14 to be close to the oil injection oil surface detector 16, and the first electromagnetic valve 7 is closed. Then the acetylene detector 22 starts working, once acetylene gas is detected, the exhaust electromagnetic valve 23 is closed, and an alarm signal is sent to a control room; if acetylene is not detected, the exhaust solenoid valve 23 is deactivated and the gas in the sample detection chamber will diffuse to the atmosphere. After acetylene gas is detected, an operator firstly presses a manual reset button, then the exhaust solenoid valve 17 is opened, the exhaust motor 18 starts to work, and acetylene detectors in the oil-gas separation chamber 8 and the sampling detection chamber 21 are reset as soon as possible. After delaying 1800s, the oil injection electromagnetic valve 10 is opened and the oil pump 9 is started, the floating ball 1 descends along with the oil level to drive the thimble to leave the exhaust oil level detector 15, and when the floating ball descends to a certain position, the oil injection electromagnetic valve 10 and the oil pump 9 are closed.
Further, in one embodiment, as shown in FIG. 2, wherein: 1ZJ, 2ZJ, 3ZJ, 4ZJ and 5ZJ represent relays; DRKG denotes a gas detector switch; 1DCKG represents an exhaust oil level detector switch; 2DCKG represents the switch of an oil filling level detector; 1DCF, 2DCF, 3DCF, 4DCF denote solenoid valves; YB denotes an oil pump; SH denotes a time relay. The monitoring unit comprises a circuit for monitoring the temperature of the fluid,
(1) a coil of a 1ZJ relay in the power supply monitoring loop is electrified, a 1ZJ1 switch is closed, and meanwhile, a power supply lamp is turned on. When the power supply loses power, the 1ZJ2 switch is opened, and the power supply monitors that a remote signal is interrupted.
(2) DRKG closes after gas detector detects gas in the gaseous detection return circuit, and 2ZJ solenoid valve obtains the electricity through exhaust oil level detector normally closed switch 1DCKG, and 2ZJ1 switch closes and carries out return circuit self-sustaining, and 2ZJ2 switch closure simultaneously sends and exhausts to distant place signal.
(3) After the 2ZJ2 switch in the exhaust circuit is closed, 1DCF is energized, the solenoid valve is opened, and exhaust begins.
(4) And an oil level detector switch 2DCKG for oiling in the oil level detection loop rises at the oil level, so that the thimble is closed after contacting the detector and the 3ZJ electromagnetic valve is electrified.
(5) And the 3ZJ1 switch is closed after delaying for 1800s, so that 2DCF and YB are electrified, the electromagnetic valve is opened and the oil pump is started, redundant transformer oil in the sampling unit is injected into the oil chamber, and meanwhile, the oil is injected to a remote signal.
(6) After the acetylene monitoring module detects acetylene, the 4ZJ relay is energized and the 4ZJ1 switch is closed for loop self-holding. And meanwhile, the 4ZJ2 switch is closed to electrify the 3DCF, the gas exhaust channel of the oil chamber of the sampling unit is closed, and acetylene is sent to a remote signal. After the exhaust loop is started, the 5ZJ3 switch is turned on, and the acetylene monitoring loop is reset after power failure.
(7) After the manual button is pressed, the 5ZJ relay is electrified and the 5ZJ1 switch is closed to perform loop self-holding, meanwhile, the 5ZJ2 switch is closed, the 4DCF is started to open the exhaust channel of the sampling unit, and the fan is started to exhaust the sampling unit.
In one embodiment, in the signal circuit of the monitoring unit shown in fig. 3, relays are denoted by 2ZJ, 3ZJ, 4ZJ, 5ZJ, power monitoring to the remote signal is controlled by relay 1ZJ2, exhaust to the remote signal is controlled by relay 2ZJ2, exhaust to the remote signal is controlled by relay 2ZJ2, and acetylene to the remote signal is controlled by relay 4ZJ 2.
The utility model discloses a monitoring unit can be digital circuit, digital chip.
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and application fields, and the above-described embodiments are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. An on-line monitoring device for acetylene of a vacuum on-load tap-changer of a transformer is characterized by comprising,
a transformer on-load tap-changer, comprising,
an oil chamber which accommodates oil,
one end of the oil conservator is connected with the oil chamber, the other end of the oil conservator is connected with the breather so as to provide oil pressure to the oil chamber,
a manual exhaust valve provided in the oil chamber to accumulate gas in the oil chamber;
a gas detector provided in the oil chamber to detect whether gas exists in the oil chamber,
an oil-gas separation chamber which is connected and communicated with the manual exhaust valve through a first exhaust electromagnetic valve, the oil-gas separation chamber comprises,
the floating ball is arranged in the oil-gas separation chamber in a floating manner and is positioned below the exhaust oil level detector and the oil injection level detector, when gas from the manual exhaust valve enters the oil-gas separation chamber through the first exhaust electromagnetic valve, the thimble arranged on the floating ball triggers the oil injection level detector, when the oil level of the oil-gas separation chamber descends, the thimble of the floating ball triggers the exhaust oil level detector,
one end of the oil pump is communicated with the oil-gas separation chamber, the other end of the oil pump is connected with the oil chamber through an oil injection electromagnetic valve,
a gas detection chamber communicated with the oil-gas separation chamber to contain gas from the manual exhaust valve, the gas detection chamber being provided with a second exhaust solenoid valve,
an acetylene detector arranged in the gas detection chamber,
a filling breather communicated with the gas detection chamber via an exhaust solenoid valve,
and the monitoring unit is electrically connected with the acetylene detector, the gas detector, the first exhaust electromagnetic valve, the second exhaust electromagnetic valve, the exhaust oil level detector, the oil filling level detector and the oil pump.
2. The on-line acetylene monitoring device for the vacuum on-load tap-changer of the transformer according to claim 1, wherein a gas relay is arranged between the oil conservator and the oil chamber.
3. The on-line acetylene monitoring device for the vacuum on-load tap-changer of the transformer according to claim 1, wherein the first exhaust solenoid valve is a normally closed valve, and the second exhaust solenoid valve is a normally open valve.
4. The on-line acetylene monitoring device for the vacuum on-load tap-changer of the transformer according to claim 1, wherein the oil-gas separation chamber further comprises an exhaust motor which is connected with the oil-gas separation chamber through an exhaust solenoid valve.
5. The on-line acetylene monitoring device for the vacuum on-load tap-changer of the transformer according to claim 4, wherein the monitoring unit comprises an exhaust loop which sends a start signal to the exhaust solenoid valve and the exhaust motor.
6. The on-line acetylene monitoring device for the vacuum on-load tap-changer of the transformer according to claim 1, wherein the monitoring unit comprises a control circuit, and the control circuit comprises a gas detection circuit, an exhaust circuit, an oil level detection circuit, an oiling circuit and an acetylene detection circuit.
7. The on-line acetylene monitoring device for the vacuum on-load tap-changer of the transformer according to claim 1, wherein an oil chamber is connected with the upper side of the oil-gas separation chamber through an exhaust pipeline, the oil chamber is connected with the lower side of the oil-gas separation chamber through an oil filling pipeline, and the exhaust pipeline and the oil filling pipeline are connected with the oil chamber through a three-way valve.
8. The on-line acetylene monitoring device for the vacuum on-load tap-changer of the transformer according to claim 7, wherein the oil injection pipeline is provided with a manual oil sampling valve.
9. The on-line acetylene monitoring device for the vacuum on-load tap-changer of the transformer according to claim 1, wherein after the exhaust oil level detector is triggered by an ejector pin of the floating ball, oil level data of the oil-gas separation chamber is measured and sent to the monitoring unit.
10. The on-line acetylene monitoring device for the vacuum on-load tap-changer of the transformer according to claim 1, wherein the oil-filled oil level detector is triggered by a thimble of the floating ball, and oil level data of the oil-gas separation chamber is measured and sent to a monitoring unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022571349.4U CN213400842U (en) | 2020-11-09 | 2020-11-09 | On-line monitoring equipment for vacuum on-load tap-changer acetylene of transformer |
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| CN202022571349.4U CN213400842U (en) | 2020-11-09 | 2020-11-09 | On-line monitoring equipment for vacuum on-load tap-changer acetylene of transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415140A (en) * | 2020-11-09 | 2021-02-26 | 内蒙古电力（集团）有限责任公司薛家湾供电局 | Real-time on-line monitoring device for vacuum on-load tap-changer acetylene of transformer |
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2020
- 2020-11-09 CN CN202022571349.4U patent/CN213400842U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415140A (en) * | 2020-11-09 | 2021-02-26 | 内蒙古电力（集团）有限责任公司薛家湾供电局 | Real-time on-line monitoring device for vacuum on-load tap-changer acetylene of transformer |
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