CN220063308U - Transformer oil pillow capsule air tightness inspection device - Google Patents
Transformer oil pillow capsule air tightness inspection device Download PDFInfo
- Publication number
- CN220063308U CN220063308U CN202320930784.2U CN202320930784U CN220063308U CN 220063308 U CN220063308 U CN 220063308U CN 202320930784 U CN202320930784 U CN 202320930784U CN 220063308 U CN220063308 U CN 220063308U
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- valve
- pressure
- transformer
- oil
- capsule
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- 239000002775 capsule Substances 0.000 title claims abstract description 38
- 238000007689 inspection Methods 0.000 title claims abstract description 12
- 238000005070 sampling Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 4
- 230000008713 feedback mechanism Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model provides a general type transformer conservator capsule gas tightness inspection device, includes the relief pressure valve, and the relief pressure valve is connected with the tee bend of taking the ball valve, and the manometer is installed to tee bend one side, and the tee bend opposite side is connected with the solenoid valve, solenoid valve and flange joint, and the solenoid valve passes through full automatic control switch module to be connected with oil pressure sensor, and oil pressure sensor passes through the allies oneself with the pipe and gets oil appearance valve intercommunication with the transformer top. The utility model can realize the functions of automatically inflating and exhausting the transformer capsule by adopting a signal feedback mechanism through the control of the full-automatic control switch module, the electromagnetic valve and the like, and can independently maintain the pressure of the capsule after inflation is finished, an external gas loop is not needed, the unqualified pressure maintaining caused by the external gas loop is avoided, and on the other hand, the situation that the transformer box body is subjected to too high pressure to damage the seal or cause the action of a transformer pressure releaser due to the influence of the weight of the capsule and the oil level of the oil conservator of different transformers is avoided, so that the accident is enlarged.
Description
Technical Field
The utility model relates to a detection device, in particular to a universal transformer conservator capsule air tightness detection device.
Background
The oil conservator is a necessary protective device of the oil immersed transformer, and is widely used in the power system at present, the gas in the oil conservator is communicated with the atmosphere through a moisture absorber, the bottom surface of the capsule is tightly attached to the oil surface in the oil conservator, so that no air exists between the capsule and the oil surface, when the oil surface changes, the capsule expands or contracts along with the change of the oil surface, the oil filled in the transformer oil chamber is ensured, and the direct contact between the transformer oil and the outside is avoided, thereby greatly slowing down the degradation speed of the transformer oil. However, in the actual operation process of the transformer, the capsule is often damaged, so that it is necessary to check the air tightness of the capsule in the on-site maintenance work, and the maintenance personnel usually inflate the conservator capsule manually during the inspection, and judge whether the conservator capsule leaks air or not by the maintenance personnel. Because the flange of the capsule in the transformer oil conservator can be connected with the moisture absorber through the air duct, an air charging device, namely the flange with the air charging nozzle, is manufactured in advance according to the diameter and the size of the opening of the air duct flange during maintenance. Then, the moisture absorber is disassembled, the flange of the inflating device is connected, the inflating rubber tube is connected to the air bottle, the other end of the inflating rubber tube is connected to the inflating nozzle, after the inflating rubber tube is installed, the valve of the air bottle is opened, the air is inflated into the capsule, the valve of the air bottle is closed until the pressure gauge displays proper pressure, whether the pressure drops or not is checked in a specified time, and the air tightness of the capsule is judged. In the detection mode, the capsule air tightness checking device has the advantages that the capsule pressure maintaining and the external pipeline are not separable, the transformer oil pressure is not controllable, and the risk of the action of the transformer pressure releaser is caused under the double functions of oil pressure and air pressure; in addition, the pressure cannot be set automatically, and the observation needs to be performed manually, so that the reliability is not high.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide the universal transformer conservator capsule air tightness checking device which can be separated from an external pipeline and can exist independently, has high detection precision and is reliable to use.
The purpose of the utility model is realized in the following way: the utility model provides a general type transformer conservator capsule gas tightness inspection device, includes the relief pressure valve, and the relief pressure valve is connected with the tee bend of taking the ball valve, and the manometer is installed to tee bend one side, and the tee bend opposite side is connected with the solenoid valve, solenoid valve and flange joint, and the solenoid valve passes through full automatic control switch module to be connected with oil pressure sensor, and oil pressure sensor passes through the allies oneself with the pipe and gets oil appearance valve intercommunication with the transformer top.
And the interfaces between the tee joint with the ball valve and the pressure reducing valve and the pressure gauge and the electromagnetic valve are welded.
The oil pressure sensor is provided with a display screen.
The fully automatic control switch module selects NE554.
The full-automatic control switch module can be replaced by an alternating current contactor, and an external power supply module is required to be added to the full-automatic control switch module by using the alternating current contactor.
The transformer oil pillow capsule air tightness checking device provided by the utility model has the following beneficial effects:
1) Through the control of full-automatic control switch module, solenoid valve etc. adopts signal feedback mechanism, can realize semi-automatic to transformer capsule automatic charging, exhaust function, after the inflation is accomplished, can also carry out independent pressurize to the capsule, does not need external gas return circuit, has avoided causing the pressurize unqualified because of external gas return circuit, on the other hand avoids different transformers because capsule self weight and conservator oil level high influence for the transformer box bears too high pressure and destroys the seal or arouses transformer pressure releaser action, makes the accident enlarge.
2) And the interfaces between the tee joint with the ball valve and the pressure reducing valve and the pressure gauge and the electromagnetic valve are welded, so that the connection is more reliable and the use is safe.
3) The oil pressure sensor is provided with a display screen, so that the reading is more visual, and the working efficiency is improved.
Drawings
The utility model is further described below with reference to the drawings and examples.
Fig. 1 is a schematic diagram of the connection of the present utility model.
In the figure: 1. the pressure reducing valve, 2, tee joint with ball valve, 3, manometer, 4, solenoid valve, 5, full-automatic control switch module, 6, oil pressure sensor, 7, flange.
Detailed Description
Referring to fig. 1, a general type transformer conservator capsule air tightness inspection device mainly comprises a pressure reducing valve 1, a tee joint with a ball valve 2, a pressure gauge 3, an electromagnetic valve 4, a full-automatic control switch module 5, an oil pressure sensor 6 and a flange plate 7. The tee joint 2 with the ball valve is welded with the interfaces of the pressure reducing valve 1, the pressure gauge 3 and the electromagnetic valve 4; the pressure reducing valve 1 is connected with a tee joint 2 with a ball valve, one side of the tee joint is provided with a pressure gauge 3, the other side of the tee joint is connected with an electromagnetic valve 4, the electromagnetic valve 4 is connected with a flange 7, and the electromagnetic valve 4 is connected with an oil pressure sensor 6 through a full-automatic control switch module 5.
The pressure gauge 3 can preset a pressure value feedback signal to the full-automatic control switch module 5, the pressure sensor 6 is provided with a liquid crystal display screen, an alarm pressure value can be freely set, and a corresponding signal can be output to the full-automatic control switch module 5, and the full-automatic control switch module 5 controls the electromagnetic valve 4 to be opened and closed; the oil pressure sensor 6 is communicated with an oil sampling valve at the top of the transformer through a connecting pipe and then is arranged at the position of a pressure releaser of the transformer to monitor the oil pressure; the flange 7 is matched with the breathing hole of the transformer capsule. The fully automatic control switch module selects NE554 or the like.
The full-automatic control switch module 5 can be replaced by an alternating current contactor, and an external power supply module is required to be added to the full-automatic control switch module by using the alternating current contactor.
When the utility model is used, the gas cylinder is connected with the pressure reducing valve 1, the flange 7 is connected with the capsule breathing hole, the pressure reducing valve is used for adjusting the air charging flow, all ball valves on the tee joint 2 with the ball valve are opened to start to charge air, if the oil pressure sensor 6 is lower than a set value, a signal is fed back to the full-automatic control switch module 5, and the electromagnetic valve 4 is controlled to be opened to start to charge air to the capsule; when the pressure in the capsule reaches the preset value of the pressure gauge 3, a signal is fed back to the full-automatic control switch module 5, the electromagnetic valve 4 is controlled to be closed, and the capsule is stopped from being inflated. Or because the weight of the capsule and the oil level of the oil conservator are influenced, the pressure gauge 3 does not reach a preset value, the electronic high-precision oil pressure sensor 6 reaches an alarm pressure value (slightly lower than the action value of the pressure releaser of the transformer), a signal is fed back to the micro-processing full-automatic control switch module 5, and the electromagnetic valve 4 is closed by the output signal. Thereby completing the air tightness inspection of the transformer oil conservator capsule.
Claims (5)
1. The utility model provides a transformer oil pillow capsule gas tightness inspection device, includes relief pressure valve (1), its characterized in that: the pressure reducing valve (1) is connected with a tee joint (2) with a ball valve, one side of the tee joint is provided with a pressure gauge (3), the other side of the tee joint is connected with an electromagnetic valve (4), the electromagnetic valve (4) is connected with a flange (7), the electromagnetic valve (4) is connected with an oil pressure sensor (6) through a full-automatic control switch module (5), and the oil pressure sensor (6) is communicated with an oil sampling valve at the top of a transformer through a connecting pipe.
2. The transformer oil conservator capsule air tightness inspection device of claim 1, wherein: the interfaces between the tee joint (2) with the ball valve and the pressure reducing valve (1) and the pressure gauge (3) and the electromagnetic valve (4) are welded.
3. The transformer oil conservator capsule air tightness inspection device of claim 1, wherein: the oil pressure sensor (6) is provided with a display screen.
4. The transformer oil conservator capsule air tightness inspection device of claim 1, wherein: the fully automatic control switch module (5) selects NE554.
5. The transformer oil conservator capsule air tightness inspection device of claim 1, wherein: the full-automatic control switch module (5) is replaced by an alternating current contactor, and an external power supply module is required to be added when the alternating current contactor is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320930784.2U CN220063308U (en) | 2023-04-23 | 2023-04-23 | Transformer oil pillow capsule air tightness inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320930784.2U CN220063308U (en) | 2023-04-23 | 2023-04-23 | Transformer oil pillow capsule air tightness inspection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220063308U true CN220063308U (en) | 2023-11-21 |
Family
ID=88784788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320930784.2U Active CN220063308U (en) | 2023-04-23 | 2023-04-23 | Transformer oil pillow capsule air tightness inspection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220063308U (en) |
-
2023
- 2023-04-23 CN CN202320930784.2U patent/CN220063308U/en active Active
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