CN215767269U - Oil level detection device in transformer conservator - Google Patents
Oil level detection device in transformer conservator Download PDFInfo
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- CN215767269U CN215767269U CN202122290843.8U CN202122290843U CN215767269U CN 215767269 U CN215767269 U CN 215767269U CN 202122290843 U CN202122290843 U CN 202122290843U CN 215767269 U CN215767269 U CN 215767269U
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- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The oil level detection device in the transformer conservator comprises an oil pipeline, a hydraulic sensor and a data acquisition system, wherein the bottom of the transformer conservator is communicated with a first oil pipeline, the other end of the first oil pipeline is communicated with a three-way valve, the other two ports of the three-way valve are communicated with an oil discharge pipe and a second oil pipeline, the other end of the second oil pipeline is communicated with a liquid inlet of the three-way valve, the other two liquid discharge ports of the three-way valve are communicated with a first pressure measuring pipe and a third oil pipeline, and the upper end of the third oil pipeline is communicated with a second pressure measuring pipe; the first pressure measuring pipe and the second pressure measuring pipe are provided with hydraulic sensors, and the hydraulic sensors are connected with a data acquisition system through signal lines; according to the utility model, through a brand-new monitoring method, the oil level in the conservator can be accurately measured, and the numerical value is fed back to operation and maintenance personnel in real time, so that the inspection personnel can master the real operation condition in the transformer in real time, and the stability and the safety of the operation of the transformer are improved.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment, and particularly relates to a device for detecting the oil level in a transformer conservator.
Background
The transformer conservator can create conditions for expansion with heat and contraction with cold of the transformer oil, and the transformer conservator has three structures of a corrugated structure, a capsule structure and a diaphragm structure. When the volume of the transformer oil expands or reduces along with the temperature of the oil, the oil conservator is used for adjusting the oil quantity, and the state that the transformer oil tank is filled with the insulating oil all the time is ensured. When the oil level of the oil conservator is too high, the oil pressure in the transformer oil tank is too high, and oil injection accidents can happen; when the oil level of the conservator is too low, the transformer may cause the gas relay to act and trip protection occurs. Therefore, when the transformer normally operates, the oil level in the transformer conservator needs to be monitored in real time and adjusted in time.
In the existing monitoring technology, an oil level gauge is generally used for monitoring the oil level in a transformer conservator, the traditional oil level gauge (such as a pointer type oil level gauge based on a floating ball principle) has more faults during operation, so that a phenomenon of 'false oil level' often occurs, and an effective measuring and verifying means is lacked under the condition that the transformer is not stopped. The false oil level usually causes the oil level misjudgment of the inspection personnel, so that the real operation condition in the transformer cannot be mastered, and the safe and stable operation of the transformer is seriously influenced.
Disclosure of Invention
In view of the technical problems in the background art, the oil level detection device in the transformer conservator provided by the utility model can accurately measure the oil level in the conservator by a brand-new monitoring method, and feeds the numerical value back to operation and maintenance personnel in real time, so that the inspection personnel can master the real operation condition in the transformer in real time, and the stability and the safety of the operation of the transformer are improved.
In order to solve the technical problems, the utility model adopts the following technical scheme to realize:
a kind of oil level checkout gear in the transformer conservator, including oil pipeline, hydraulic sensor and data acquisition system, the bottom of the transformer conservator communicates the first oil pipeline, another end of the first oil pipeline communicates the three-way valve, another two ports of the three-way valve communicate oil drain pipe and second oil pipeline, another end of the second oil pipeline is communicated with inlet of the three-way pipe, the horizontal direction fluid-discharge outlet of the three-way pipe communicates the first pressure-measuring pipe, the vertical direction fluid-discharge outlet of the three-way pipe communicates the third oil pipeline, the upper end of the third oil pipeline communicates the second pressure-measuring pipe;
the first pressure measuring pipe is provided with a first hydraulic sensor; and a second hydraulic sensor is arranged on the second pressure measuring pipe, and the first hydraulic sensor and the second hydraulic sensor are connected with a data acquisition system through signal lines.
In the preferred scheme, a first stop valve is arranged on the first oil conveying pipe, and a second stop valve is arranged on the second oil conveying pipe.
In a preferable scheme, the top of the third oil conveying pipe is provided with an exhaust valve.
In the preferred scheme, the second oil delivery pipe and the transformer conservator are installed in parallel, and the first oil delivery pipe, the third oil delivery pipe and the transformer conservator are installed vertically.
In a preferred scheme, the data acquisition system comprises a signal acquisition processor, a display and a power supply module; the signal input end of the signal acquisition processor is electrically connected with the first hydraulic sensor and the second hydraulic sensor through signal lines, the output end of the signal acquisition processor is connected with the display, and the power supply module is connected with the signal acquisition processor and the display through power lines and provides electric energy for the signal acquisition processor and the display.
This patent can reach following beneficial effect:
1. compared with the traditional monitoring method, the oil level monitoring device has higher accuracy of monitoring data and can effectively solve the problem of false oil level of the traditional oil level indicator;
2. the device has simple structure and convenient use. In the running process of the transformer, the monitoring parts can be checked and replaced without stopping the transformer, and the whole equipment is convenient to maintain and overhaul.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the overall structure of the detecting device of the present invention;
FIG. 2 is a schematic view of the overall structure of the detecting device of the present invention;
fig. 3 is a schematic diagram of the structure and principle of the present invention.
In the figure: the oil-gas separation device comprises a transformer conservator 1, a first oil delivery pipe 2-1, a second oil delivery pipe 2-2, a third oil delivery pipe 2-3, a first stop valve 3-1, a second stop valve 3-2, a three-way valve 4, an oil discharge pipe 5, a three-way pipe 6, a first hydraulic sensor 7-1, a second hydraulic sensor 7-2, an exhaust valve 8, a first pressure measuring pipe 9-1, a second pressure measuring pipe 9-2, a signal acquisition processor 10, a display 11, a power supply module 12 and a signal line 13.
Detailed Description
As shown in fig. 1 and 2, the oil level detection device in the transformer conservator comprises an oil pipeline, a hydraulic sensor and a data acquisition system, wherein the bottom of the transformer conservator 1 is communicated with a first oil pipeline 2-1, the other end of the first oil pipeline 2-1 is communicated with a three-way valve 4, and the other two ports of the three-way valve 4 are communicated with an oil discharge pipe 5 and a second oil pipeline 2-2; during daily work, the first oil delivery pipe 2-1 and the second oil delivery pipe 2-2 are kept communicated by rotating the three-way valve 4, and the oil discharge pipe 5 is kept blocked from the first oil delivery pipe 2-1 and the second oil delivery pipe 2-2;
when the components on the detection device need to be replaced, the second oil delivery pipe 2-2 is communicated with the oil discharge pipe 5 by rotating the three-way valve 4, the first oil delivery pipe 2-1 is blocked from the second oil delivery pipe 2-2 and the oil discharge pipe 5, and the oil discharge pipe 5 plays a role in discharging insulating oil in the oil delivery pipe;
however, when the oil in the transformer conservator 1 needs to be discharged, the three-way valve 4 is rotated to enable the oil discharge pipe 5 to be communicated with the first oil delivery pipe 2-1, and to enable the second oil delivery pipe 2-2 to be blocked from the first oil delivery pipe 2-1 and the oil discharge pipe 5, and the oil discharge pipe 5 plays a role in discharging the insulating oil in the transformer conservator 1.
As shown in fig. 1 and 2, one end of a second oil delivery pipe 2-2 is communicated with a three-way valve 4, the other end of the second oil delivery pipe 2-2 is communicated with a liquid inlet of a three-way pipe 6, a horizontal liquid outlet of the three-way pipe 6 is communicated with a first pressure-measuring pipe 9-1, a vertical liquid outlet of the three-way pipe 6 is communicated with a third oil delivery pipe 2-3, and the upper end of the third oil delivery pipe 2-3 is communicated with the second pressure-measuring pipe 9-2; the first pressure measuring pipe 9-1 is provided with a first hydraulic sensor 7-1; and a second hydraulic sensor 7-2 is arranged on the second pressure measuring pipe 9-2, the first hydraulic sensor 7-1 and the second hydraulic sensor 7-2 are connected with a data acquisition system through a signal line 13, and the oil level in the transformer conservator 1 can be calculated by measuring the oil pressure values in the first pressure measuring pipe 9-1 and the second pressure measuring pipe 9-2.
Preferably, as shown in fig. 1 and 2, a first stop valve 3-1 is arranged on the first oil delivery pipe 2-1, a second stop valve 3-2 is arranged on the second oil delivery pipe 2-2, and the first stop valve 3-1 and the second stop valve 3-2 can control an oil path and facilitate replacement and maintenance of components on the oil level detection device.
In a preferred embodiment, as shown in fig. 2, a vent valve 8 is provided at the top of the third flow pipe 2-3. The exhaust valve 8 is beneficial to exhausting air in the oil conveying pipe, so that the oil conveying pipe and the pressure measuring pipe are ensured to be filled with insulating oil, and the accuracy of the measuring results of the first hydraulic sensor 7-1 and the second hydraulic sensor 7-2 is further ensured.
In a preferred scheme, as shown in fig. 2, the second oil delivery pipe 2-2 and the transformer conservator 1 are installed in parallel, and the first oil delivery pipe 2-1, the third oil delivery pipe 2-3 and the transformer conservator 1 are installed vertically. By adopting the installation structure, the accuracy of the height of the insulating oil level can be ensured, and the detection precision is further improved.
As shown in fig. 3, the data acquisition system includes a signal acquisition processor 10, a display 11 and a power supply module 12; the signal input end of the signal acquisition processor 10 is connected with the first hydraulic sensor 7-1 and the second hydraulic sensor 7-2 through a signal line 13, the signal output end of the signal acquisition processor 10 is connected with the display 11, the power supply module 12 is connected with the signal acquisition processor 10 and the display 11 through a power line and provides electric energy for the signal acquisition processor 10 and the display 11, wherein the signal acquisition processor 10 can collect pressure value data signals acquired by the first hydraulic sensor 7-1 and the second hydraulic sensor 7-2, the oil level value in the transformer conservator 1 is obtained after calculation processing, and then the value is transmitted to the display 11 to be displayed.
The measurement principle of the device is as follows:
1. when the hydraulic control system works normally, the hydraulic value acquired by the second hydraulic sensor 7-2 is recorded as P1, and the hydraulic value acquired by the first hydraulic sensor 7-1 is recorded as P2;
2. from the formula and the schematic diagram of fig. 3, P1= ρ gH1, P2= ρ gH2, H2= H1+ H3; (wherein H2 is the height from the first pressure-measuring pipe 9-1 to the oil level of the transformer conservator 1, H1 is the height from the second pressure-measuring pipe 9-2 to the oil level of the transformer conservator 1, H3 is the height difference between the first pressure-measuring pipe 9-1 and the second pressure-measuring pipe 9-2 and can be obtained by measurement at the time of previous installation, ρ is the liquid density, and H is the gravity constant)
3. H2= P2H 3/(P2-P1) can be obtained through calculation, and the numerical values of P1, P2 and H3 in the formula can be obtained through the second step, so that the value of the height H2 from the first pressure measuring pipe 9-1 to the oil level of the transformer conservator 1 can be calculated according to the bottom hydraulic pressure values P2 and P1 collected by the first hydraulic pressure sensor 7-1 and the second hydraulic pressure sensor 7-2;
4. the height from the first piezometer tube 9-1 to the bottom of the transformer conservator 1 can be obtained through early installation measurement and is recorded as H4, and as can be known from fig. 3, the oil level value H = H2-H4 in the transformer conservator 1 can be obtained, and the real-time value H of the oil level of the transformer conservator 1 can be accurately calculated due to the fact that the values of H2 and H4 are obtained.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.
Claims (5)
1. The utility model provides an oil level detection device in transformer conservator, including defeated oil pipe, hydraulic pressure sensor and data acquisition system, its characterized in that: the bottom of a transformer conservator (1) is communicated with a first oil delivery pipe (2-1), the other end of the first oil delivery pipe (2-1) is communicated with a three-way valve (4), the other two ports of the three-way valve (4) are communicated with an oil discharge pipe (5) and a second oil delivery pipe (2-2), the other end of the second oil delivery pipe (2-2) is communicated with a liquid inlet of a three-way pipe (6), a liquid discharge port of the three-way pipe (6) in the horizontal direction is communicated with a first pressure-measuring pipe (9-1), a liquid discharge port of the three-way pipe (6) in the vertical direction is communicated with a third oil delivery pipe (2-3), and the upper end of the third oil delivery pipe (2-3) is communicated with a second pressure-measuring pipe (9-2);
a first hydraulic sensor (7-1) is arranged on the first pressure measuring pipe (9-1); and a second hydraulic sensor (7-2) is arranged on the second pressure measuring pipe (9-2), and the first hydraulic sensor (7-1) and the second hydraulic sensor (7-2) are connected with a data acquisition system through a signal line (13).
2. The oil level detection device in the transformer conservator according to claim 1, characterized in that: the first oil delivery pipe (2-1) is provided with a first stop valve (3-1), and the second oil delivery pipe (2-2) is provided with a second stop valve (3-2).
3. The oil level detection device in the transformer conservator according to claim 1, characterized in that: an exhaust valve (8) is arranged at the top of the third oil delivery pipe (2-3).
4. The oil level detection device in the transformer conservator according to claim 1, characterized in that: the second oil delivery pipe (2-2) and the transformer conservator (1) are arranged in parallel, and the first oil delivery pipe (2-1), the third oil delivery pipe (2-3) and the transformer conservator (1) are arranged vertically.
5. The oil level detection device in the transformer conservator according to claim 1, characterized in that: the data acquisition system comprises a signal acquisition processor (10), a display (11) and a power supply module (12); the signal input end of the signal acquisition processor (10) is electrically connected with the first hydraulic sensor (7-1) and the second hydraulic sensor (7-2) through a signal line (13), the output end of the signal acquisition processor (10) is connected with the display (11), and the power supply module (12) is connected with the signal acquisition processor (10) and the display (11) through a power line and provides electric energy for the signal acquisition processor (10) and the display (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122290843.8U CN215767269U (en) | 2021-09-22 | 2021-09-22 | Oil level detection device in transformer conservator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122290843.8U CN215767269U (en) | 2021-09-22 | 2021-09-22 | Oil level detection device in transformer conservator |
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| CN215767269U true CN215767269U (en) | 2022-02-08 |
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| CN202122290843.8U Active CN215767269U (en) | 2021-09-22 | 2021-09-22 | Oil level detection device in transformer conservator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114812696A (en) * | 2022-06-28 | 2022-07-29 | 成都佳信电气工程技术有限公司 | Main transformer conservator, oil level monitoring system and fault judgment method |
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2021
- 2021-09-22 CN CN202122290843.8U patent/CN215767269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114812696A (en) * | 2022-06-28 | 2022-07-29 | 成都佳信电气工程技术有限公司 | Main transformer conservator, oil level monitoring system and fault judgment method |
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