CN218494766U - Inflation device for pressure sealing test of liquid-immersed distribution transformer - Google Patents
Inflation device for pressure sealing test of liquid-immersed distribution transformer Download PDFInfo
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- CN218494766U CN218494766U CN202222496702.6U CN202222496702U CN218494766U CN 218494766 U CN218494766 U CN 218494766U CN 202222496702 U CN202222496702 U CN 202222496702U CN 218494766 U CN218494766 U CN 218494766U
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Abstract
The utility model relates to a transformer seal test technical field, concretely relates to experimental aerating device of liquid formula distribution transformer pressure seal that soaks. The air charging device comprises a pressure gauge and a three-way connector, wherein an air inlet on one side of the pressure gauge is provided with an anti-drop self-locking connector for connecting with an air source device; the other side is connected with a three-way connector through a first straight-through joint; the top end of the pressure gauge is provided with a fine-tuning locking valve, and the bottom of the pressure gauge is provided with a gas-water separation and filtration device; the lower end of the tee joint connector is provided with an external thread connector connected with an oil filling port of the liquid immersion type distribution transformer, the top end of the tee joint connector is connected with a second straight-through joint, and a valve is arranged on the second straight-through joint. The utility model discloses a simplify the connection step of experimental pipeline, reduce the quantity of non-isolated device and accessory in the return circuit of aerifing to reach the target that effectively improves the return circuit gas tightness of aerifing, reduce test time, improve experimental security, accuracy, finally improve test efficiency.
Description
Technical Field
The utility model relates to a transformer seal test technical field, concretely relates to experimental aerating device of liquid formula distribution transformer pressure seal that soaks.
Background
When the liquid immersion type distribution transformer is transported and operated, the oil tank needs to keep certain tightness so as to ensure the dryness of the oil tank. Therefore, the newly purchased and overhauled liquid-immersed distribution transformer needs to be subjected to a sealing test to prevent the insulating oil level from dropping due to air leakage and oil leakage or prevent the winding from being affected with damp due to water inflow during the operation of the liquid-immersed distribution transformer. The sealing performance of the oil filling component and the body determines the service life and the operation safety of the liquid immersion type distribution transformer. The pressure sealing test of the liquid immersion type distribution transformer is carried out, and an air compressor, an oxygen meter, a switching flange, an inflation pipe and the like are commonly used in a matching way.
The conventional pressure seal test device has the following defects: the pressure sealing test inflation part is formed by connecting a plurality of independent devices or accessories through inflation pipes, and has a plurality of connecting pipeline interfaces, so that a plurality of possible air leakage points are generated, and the test result of the sealing test is possibly adversely affected; all devices and accessories of the inflation part are not special for sealing tests, the matching performance is poor, the actual operation is complex, the operation is slow, and the use by a first user and a new hand is particularly not facilitated; the flange surface is connected with the air inlet of the distribution transformer, a special flange joint needs to be processed, the contact surface treatment and the sealing ring of the joint have higher requirements, the processing and the actual use are not facilitated, and the sealing effect of the flange surface is not as good as that of a screw joint; the connecting pipeline is more complicated, and the joint quantity that needs to handle is also more, and the time that experimental keeping under certain pressure is longer, needs to carry out inspection and guardianship repeatedly before experimental, well, back, and the test time is showing and is increasing, has also increased the probability that the trachea connects the leap out simultaneously, and the security is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an aerating device that liquid soaks formula distribution transformer pressure seal is experimental is provided, seals through this device experimental, and used device is few, easy operation, and safe and reliable. The technical scheme is as follows:
an air inlet at one side of the pressure gauge is provided with an anti-falling self-locking joint, the other side of the pressure gauge is connected with the tee joint connector through a first straight-through joint, the top end of the pressure gauge is provided with a fine-tuning locking valve for adjusting the size of air inlet of the pressure gauge according to needs, and the bottom of the pressure gauge is provided with an air-water separation and filtering device;
the lower end of the tee joint connector is provided with an external thread connector connected with an oil filling port of the liquid immersion type distribution transformer, the top end of the tee joint connector is connected with a second straight-through joint, and a valve is arranged on the second straight-through joint, so that other parts can be conveniently installed.
Preferably, the external thread interface is matched with the size of an oil filling port of the liquid-immersed distribution transformer.
Preferably, a sealing ring is arranged on the outer thread port.
Preferably, the upper side of the side wall of the three-way connecting body is provided with an internal thread joint matched with the first straight joint, and the top end of the three-way connecting body is provided with an internal thread joint matched with the second straight joint.
Preferably, the size of the anti-falling self-locking joint is matched with an inflation hose of a connected air source device.
Preferably, the gas-water separation and filtration device is detachably connected with the pressure gauge, the pressure gauge and the gas-water separation and filtration device are provided with connecting parts which can be mutually connected in a sealing way and are matched with each other, and the connecting parts can be in a connecting mode of an inner thread and an outer thread which are mutually matched and can be detached after being unscrewed.
Preferably, a connecting pipe connected to a pressure gauge pipeline is arranged in the center of the top end of the gas-water separation and filtration device.
Preferably, a drain valve is arranged at the bottom of the gas-water separation and filtration device.
Compared with the prior art, the utility model discloses an useful part lies in:
the utility model discloses a simplify the connection step of experimental pipeline, reduce the quantity of non-isolated device and accessory in the return circuit of aerifing to reach the target that effectively improves the return circuit gas tightness of aerifing, reduces test time, improves experimental security, finally make liquid-immersed distribution transformer's sealed test efficiency and accuracy all show the improvement.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1-a valve, 2-a second straight joint, 3-a three-way connector, 4-a sealing ring, 5-an external thread interface, 6-a fine adjustment locking valve, 7-a first straight joint, 8-an anti-drop self-locking joint, 9-a pressure gauge, 10-a gas-water separation and filtration device and 11-a drain valve.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention; for a better understanding of the present embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; for those skilled in the art, some well-known structures in the drawings and descriptions thereof may be omitted; the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, an aerating device for a liquid-immersed distribution transformer pressure seal test comprises a pressure gauge 9 and a tee connector 3, wherein an air inlet on one side of the pressure gauge 9 is provided with an anti-dropping self-locking connector 8, the size of the anti-dropping self-locking connector 8 is matched with a pressure air pipe of a connected air source device, the anti-dropping self-locking connector 8 is connected with a pressure air pipe matched with a pressure air source (an air compressor or similar pressure gas is connected, and the pressure is not more than 0.2 MPa) under general conditions, and the aerating device can convey gas with required pressure to the device. The other side of the pressure gauge 9 is connected with the three-way connector 3 through a first straight-through joint 7. The fine setting locking valve 6 is installed on the top of manometer 9, sets up the fine setting switch on the fine setting locking valve 6, can adjust the numerical value of requirement with pressure, and the numerical value of direct display regulation is gone up on the display panel of manometer 9.
And a gas-water separation and filtration device 10 is arranged at the bottom of the pressure gauge 9. The gas-water separation and filtering device 10 is detachably connected with the pressure gauge 9 and can be connected or detached, the pressure gauge 9 and the gas-water separation and filtering device 10 are provided with connecting parts which can be mutually connected in a sealing way and are adaptive, and the connection of the internal thread and the external thread in a screwing way is adopted. The center of the top end of the gas-water separation and filtration device 10 is provided with a connecting pipe connected to a pipeline of the pressure gauge 9. The gas enters the pressure gauge 9 through a pipeline, then enters the gas-water separation and filtration device 10 for filtration and separation of gas and liquid, and then enters the first straight-through joint 7, so that unclean gas is prevented from entering the liquid-immersed distribution transformer. The bottom of the gas-water separation and filtration device 10 is provided with a drain valve 11, and the drain valve 11 can be opened at intervals to discharge the separated liquid.
And an internal thread joint matched with the first straight joint 7 is arranged on the upper side of the side wall of the three-way connecting body 3, and an internal thread joint matched with the second straight joint is arranged at the top end of the three-way connecting body. The utility model discloses each joint department, junction all can guarantee to seal.
The diameter of each junction can be according to actual need installation looks adaptation, the utility model provides a joint specification does: the first straight-through joint is 7 mm, phi is 7.05mm; the diameter of the second straight-through joint is 2 mm, 17.19mm; the anti-drop self-locking joint is 8 mm phi and 14.33mm.
The using method comprises the following steps:
during the use, be connected to the oiling mouth of liquid-immersed distribution transformer with the external silk interface 5 of 3 bottoms of stainless steel tee junction body, close valve 1, anticreep self-locking joint 8 is connected with pressure air supply with supporting pressure trachea, slowly open the air supply valve, make pressure air supply gas slowly pour into in foretell transformer, adjust fine setting locking valve 6, make pressure keep at the pressure value that needs the experiment, locking fine setting locking valve 6, begin timing, record pressure value on the manometer 9, wait for the experimental time to end, observe the pressure value of manometer 9, record the experimental termination time pressure value, close the pressure air supply valve, open valve 1, discharge pressure gas in the transformer unscrew external silk interface 5, take off whole aerating device, resume connecting bolt or relevant device on the former above-mentioned oiling transformer mouth, this transformer pressure seal experiment is accomplished.
The utility model discloses a main body material all adopts stainless steel, and is than better for the persistence, and the device leakproofness is reliable. The external thread interfaces 5 with different diameters can be fixed according to the oil filling port of the liquid immersion type distribution transformer, the maximum numerical value of the used pressure gauge is 100kPa, and the diameters of other joints can be customized according to specific application.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and not in detail herein. The other parts not described are as usual in the art.
Furthermore, it should be understood that although the present description refers to embodiments, the device of the present invention does not include only a single technical solution, and such description is only for clarity reasons, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments can be combined appropriately to form other embodiments understood by those skilled in the art, and also fall within the protection scope of the present invention.
Claims (7)
1. The inflation device for the pressure sealing test of the liquid immersed distribution transformer is characterized by comprising a pressure gauge and a three-way connector, wherein an anti-falling self-locking connector is installed at an air inlet on one side of the pressure gauge, the other side of the pressure gauge is connected with the three-way connector through a first through connector, a fine-adjustment locking valve is installed at the top end of the pressure gauge, and a gas-water separation and filtration device is installed at the bottom of the pressure gauge;
the lower end of the three-way connector is provided with an external thread connector connected with an oil filling port of the liquid-immersed distribution transformer, the top end of the three-way connector is connected with a second straight-through joint, and a valve is arranged on the second straight-through joint.
2. The inflation device for the pressure seal test of the liquid-immersed distribution transformer according to claim 1, wherein the external thread interface is matched with the size of an oil filling port of the liquid-immersed distribution transformer.
3. The inflation device for the pressure seal test of the liquid-immersed distribution transformer according to claim 2, wherein a sealing ring is arranged on the external thread interface.
4. The inflation device for the pressure sealing test of the liquid-immersed distribution transformer as claimed in claim 1, wherein an internal thread joint matched with the first through joint is arranged on the upper side of the side wall of the three-way connection body, and an internal thread joint matched with the second through joint is arranged at the top end of the three-way connection body.
5. The inflation device for the liquid-immersed distribution transformer pressure seal test according to claim 1, wherein the connection between the gas-water separation and filtration device and the pressure gauge is detachable, and the pressure gauge and the gas-water separation and filtration device are provided with connection parts which can be mutually hermetically connected and adapted.
6. The gas-filling device for the pressure sealing test of the liquid-immersed distribution transformer as claimed in claim 5, wherein a connecting pipe connected to a pressure gauge pipeline is arranged at the center of the top end of the gas-water separation and filtration device.
7. The inflation device for the liquid-immersed distribution transformer pressure sealing test according to claim 6, wherein a drain valve is arranged at the bottom of the gas-water separation and filtration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222496702.6U CN218494766U8 (en) | 2022-09-21 | 2022-09-21 | Inflation device for pressure sealing test of liquid immersion type distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222496702.6U CN218494766U8 (en) | 2022-09-21 | 2022-09-21 | Inflation device for pressure sealing test of liquid immersion type distribution transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN218494766U true CN218494766U (en) | 2023-02-17 |
| CN218494766U8 CN218494766U8 (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222496702.6U Active CN218494766U8 (en) | 2022-09-21 | 2022-09-21 | Inflation device for pressure sealing test of liquid immersion type distribution transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218494766U8 (en) |
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- 2022-09-21 CN CN202222496702.6U patent/CN218494766U8/en active Active
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| CN218494766U8 (en) | 2023-06-23 |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CU01 | Correction of utility model | ||
| CU01 | Correction of utility model |
Correction item: Patentee|Address|Patentee Correct: Gansu Xincheng Engineering Quality Testing Co.,Ltd.|730050 No. 101, Pengjiaping West Road, Qilihe District, Lanzhou City, Gansu Province|Gansu Diantong Electric Power Engineering Design Consulting Co.,Ltd. False: Gansu Xincheng Engineering Quality Testing Co.,Ltd.|730050 No. 101, Pengjiaping West Road, Qilihe District, Lanzhou City, Gansu Province|Gansu Diantong Electric Power Engineering Design Consulting Co.,Ltd. Number: 07-02 Page: The title page Volume: 39 Correction item: Patentee|Address|Patentee Correct: Gansu Xincheng Engineering Quality Testing Co.,Ltd.|730050 No. 101, Pengjiaping West Road, Qilihe District, Lanzhou City, Gansu Province|Gansu Diantong Electric Power Engineering Design Consulting Co.,Ltd. False: Gansu Xincheng Engineering Quality Testing Co.,Ltd.|730050 No. 101, Pengjiaping West Road, Qilihe District, Lanzhou City, Gansu Province|Gansu Diantong Electric Power Engineering Design Consulting Co.,Ltd. Number: 07-02 Volume: 39 |
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| OR01 | Other related matters | ||
| OR01 | Other related matters |