CN219319834U - Sealed oil extraction gun for 220 KV oil immersed transformer - Google Patents
Sealed oil extraction gun for 220 KV oil immersed transformer Download PDFInfo
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- CN219319834U CN219319834U CN202222702919.8U CN202222702919U CN219319834U CN 219319834 U CN219319834 U CN 219319834U CN 202222702919 U CN202222702919 U CN 202222702919U CN 219319834 U CN219319834 U CN 219319834U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
A sealed oil extraction gun for a 220 KV oil immersed transformer belongs to the technical field of oil extraction of oil immersed transformers, and comprises an oil extraction gun body, wherein an inner hexagonal screw hole is formed in the head of the oil extraction gun body, a rubber pad coaxial with the inner hexagonal screw hole is arranged at the tail end of the inner hexagonal screw hole, the inner hexagonal screw hole is used for being matched with a hexagonal bolt on an oil discharging nozzle of the transformer, meanwhile, the inner hexagonal screw hole is communicated with a main pipeline positioned inside the oil extraction gun body, an oil extraction pipeline and a waste oil pipeline are connected to the main pipeline, a main pipeline valve is arranged at the joint of the oil extraction pipeline and the main pipeline, and a waste oil pipeline valve is arranged at the joint of the waste oil pipeline and the main pipeline; the oil taking injector is connected with an oil taking pipeline through an oil taking hose, and an oil taking three-way valve is arranged on the oil taking hose; the waste oil recovery bottle is connected with a waste oil pipeline. The oil sampling gun can collect the oil samples of the transformer in a fully sealed state, firstly, waste oil is discharged and bubbles are removed during oil sampling, and the oil samples sampled by the oil sampling injector are ensured to be effective oil samples.
Description
Technical Field
The utility model belongs to the technical field of oil extraction of oil immersed transformers, and particularly relates to a sealed oil extraction gun for a 220-kilovolt oil immersed transformer.
Background
According to the requirements of GB/T14542-2017 on the rules of analysis and judgment of dissolved gas in transformer oil of the rules of Transformer oil maintenance and management of DL/T722-2014, the oil immersed power transformer needs to regularly carry out sampling work, insulating oil chromatography and routine assay analysis are carried out, and whether the transformer is abnormal is judged according to test results. According to the requirements of GB/T7597-2007 'electric oil transformers and turbine oil sampling methods', the oil sample should be ensured not to be polluted as much as possible during sampling, and the test data are accurate and effective, so that the running condition of the transformer body can be truly reflected. However, in the process of taking oil samples from 220 kv oil immersed transformers, workers often adopt an open type mode because no suitable tool exists, and an oil bottle and an oil taking port are exposed in the air during sampling, so that dust prevention and moisture prevention cannot be realized.
Disclosure of Invention
In view of the above, the utility model aims to solve the problems that in the current insulating oil extraction process of 220 KV oil immersed transformers, a non-fully sealed mode is adopted, oil bottles and oil discharge ports of the transformers are exposed in the air, water and impurities in the air are easy to mix into the oil bottles, inaccurate results are easy to cause misjudgment and misconclusion in the detecting process of the insulating oil, and the sealing oil extraction gun for 220 KV oil immersed transformers is provided, the oil extraction gun connects and seals an oil discharge nozzle of the transformer in a threaded connection and rubber mat sealing mode, waste oil is firstly discharged from a waste oil pipeline during oil extraction, the oil sample extracted by an oil extraction injector is ensured to be an effective oil sample, and the accuracy of laboratory test data is further ensured.
The technical scheme adopted by the utility model for achieving the purpose is as follows: 220 kilovolt oil immersed transformer seals gets oil gun, including getting oil gun rifle body, its characterized in that: the oil gun also comprises a main pipeline, an oil extraction pipeline, a waste oil pipeline, an oil extraction injector, an oil extraction three-way valve, an oil extraction hose and a waste oil recovery bottle, wherein the main pipeline is arranged in the gun body of the oil extraction gun; the head of the oil extraction gun body is provided with an inner hexagonal screw hole, the tail end of the inner hexagonal screw hole is provided with a rubber pad coaxial with the inner hexagonal screw hole, the inner hexagonal screw hole is used for being matched with a hexagonal bolt on a transformer oil drain nozzle, meanwhile, the inner hexagonal screw hole is communicated with a main pipeline, when the oil extraction gun is operated, the oil extraction gun is rotated, and the oil extraction gun drives the hexagonal bolt on the transformer oil drain nozzle to rotate through the inner hexagonal screw hole, so that the transformer oil drain nozzle is opened, and insulating oil enters the main pipeline; the oil extraction pipeline and the waste oil pipeline are respectively connected to the main pipeline, a main pipeline valve is arranged at the joint of the oil extraction pipeline and the main pipeline, and a waste oil pipeline valve is arranged at the joint of the waste oil pipeline and the main pipeline; the oil taking injector is connected with an oil taking pipeline through an oil taking hose, and an oil taking three-way valve is arranged on the oil taking hose; the waste oil recovery bottle is connected with a waste oil pipeline.
Further, the rubber cushion is a sealing rubber cushion.
Further, the main pipe valve is a rotary valve and is used for switching insulating oil to enter the waste oil pipeline or the oil extraction pipeline.
Further, the material of the oil extraction gun body is white steel.
Further, the main pipeline, the waste oil pipeline and the oil extraction pipeline are all PVC pipes.
Further, the main pipeline, the waste oil pipeline and the oil extraction pipeline are PVE pipes.
Further, the oil taking injector is a glass injector.
Further, the waste oil recovery bottle was a glass flask.
Through the design scheme, the utility model has the following beneficial effects: the sealed oil extraction gun for the 220 KV oil immersed transformer has the advantages of simple structure, quick installation, convenient operation and good sealing performance, can collect oil samples of the transformer in a fully sealed state, can remove invalid oil samples at the front end of an oil drain nozzle of the transformer, can ensure that the effective oil samples are collected, can remove influences of factors such as bubbles, air moisture and the like, and can ensure that the collected oil samples can truly reflect the internal state of equipment.
Drawings
Fig. 1 is a schematic diagram of a sealed oil extraction gun for a 220 kv oil immersed transformer according to the present utility model.
In the figure: 1-inner hexagonal screw hole, 2-rubber cushion, 3-main pipe valve, 4-oil taking gun body, 5-waste oil pipeline valve, 6-waste oil pipeline, 7-main pipeline, 8-oil taking pipeline, 9-oil taking injector, 10-oil taking three-way valve, 11-oil taking hose and 12-waste oil recovery bottle.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
As shown in fig. 1, the sealed oil extraction gun for the 220 kv oil immersed transformer comprises an oil extraction gun body 4, and further comprises a main pipeline 7, an oil extraction pipeline 8, a waste oil pipeline 6, an oil extraction injector 9, an oil extraction three-way valve 10, an oil extraction hose 11 and a waste oil recovery bottle 12, wherein the main pipeline 7 is arranged inside the oil extraction gun body 4; an inner hexagonal screw hole 1 is formed in the head of the oil extraction gun body 4, a rubber pad 2 coaxial with the oil extraction gun body is arranged at the tail end of the inner hexagonal screw hole 1, the inner hexagonal screw hole 1 is used for being matched with a hexagonal bolt on a transformer oil drain nozzle, meanwhile, the inner hexagonal screw hole 1 is communicated with a main pipeline 7, when the oil extraction gun is rotated, the oil extraction gun drives the hexagonal bolt on the transformer oil drain nozzle to rotate through the inner hexagonal screw hole 1, so that the transformer oil drain nozzle is opened, and insulating oil enters the main pipeline 7; the oil extraction pipeline 8 and the waste oil pipeline 6 are respectively connected to the main pipeline 7, a main pipe valve 3 is arranged at the joint of the oil extraction pipeline 8 and the main pipeline 7, and a waste oil pipeline valve 5 is arranged at the joint of the waste oil pipeline 6 and the main pipeline 7; the oil extraction injector 9 is connected with an oil extraction pipeline 8 through an oil extraction hose 11, and an oil extraction three-way valve 10 is arranged on the oil extraction hose 11; the waste oil recovery bottle 12 is connected with the waste oil pipeline 6.
The transformer oil drain nozzle arranged at the oil drain port of the transformer belongs to the prior art and is not described in detail herein, and the transformer oil drain nozzle is communicated with the main pipeline 7 after penetrating into the oil extraction gun body 4 and is in sealing connection with the oil extraction gun body 4 through the rubber mat 2; the material of the oil extraction gun body 4 is white steel, so that the strength is ensured to meet the working requirement; the inner hexagonal screw hole 1 is a part connected with the transformer oil drain nozzle, and adopts an inner hexagonal structure, so that a hexagonal bolt on the transformer oil drain nozzle can be rotated, and the transformer oil drain nozzle is opened, so that insulating oil enters the main pipeline 7; the rubber pad 2 is a sealing rubber pad, so that the transformer oil drain nozzle can be well sealed after penetrating into the oil extraction gun; the main pipe valve 3 is a rotary valve and is used as a control valve of an oil way of the main pipeline 7, and insulating oil is switched to enter the waste oil pipeline 6 or the oil extraction pipeline 8; the waste oil pipeline valve 5 is a valve for controlling the opening/closing of the waste oil pipeline 6 and is normally in a closed state; the main pipeline 7, the waste oil pipeline 6 and the oil extraction pipeline 8 are all PVC pipes or PVE pipes, so that the oil sample is prevented from being in contact with metal to cause dirt; the oil taking hose 11 is used for connecting an oil taking pipeline 8, an oil taking three-way valve 10 and an oil taking injector 9; the oil taking three-way valve 10 is used for exhausting gas in the oil taking pipeline 8 and ensuring that an oil sample of the oil taking injector 9 is free of bubbles; the oil taking injector 9 is a sealed oil taking collecting and transporting tool and is responsible for extracting and collecting an effective oil sample of the transformer; the waste oil recovery bottle 12 is a glass flask and is responsible for collecting initial waste oil during oil extraction, and effective oil sample extraction is ensured.
During operation, get the oil gun and get the glib talker through interior hexagonal screw 1 and cushion 2, carry out sealing connection with the transformer, through rotating the oil gun of getting, get the hexagonal bolt of glib talker with the transformer and open, make insulating oil get into the oil gun of getting, be responsible for valve 3 and seal oil pipe 8 this moment, waste oil pipeline valve 5 is in the closed state. Then connecting an oil taking hose 11, an oil taking injector 9, an oil taking three-way valve 10 and a waste oil recovery bottle 12, firstly opening a waste oil pipeline valve 5, removing invalid oil samples in a transformer oil drain pipeline and nearby a transformer tank body, and collecting the invalid oil samples through the waste oil recovery bottle 12; secondly, closing a waste oil pipeline valve 5, opening a main pipe valve 3, enabling an effective oil sample to flow into an oil extraction pipeline 8, removing bubbles in the oil sample through an oil extraction three-way valve 10, rotating a switch of the oil extraction three-way valve 10, injecting the effective oil sample into an oil extraction injector 9, and sealing the oil extraction injector 9 by using a rubber cap after oil extraction is finished; and finally, closing the main pipe valve 3, and closing the hexagon bolt on the oil extraction nozzle of the transformer by rotating the oil extraction gun, separating the oil extraction gun from the oil extraction nozzle of the transformer, and recovering the equipment state before oil extraction, thereby finishing oil extraction.
In summary, the sealed oil extraction gun for the 220 KV oil immersed transformer provided by the utility model has the advantages of simple structure, quick installation, convenience in operation and good sealing property, can effectively extract insulating oil of the oil immersed transformer, can ensure the good sealing property, and can avoid inaccurate insulating oil detection data caused by air or water entering the oil extraction injector 9 in the extraction process. After the oil extraction gun is used, the accuracy and the tightness of insulating oil sampling are improved to a great extent, the labor intensity of operators is reduced, the operation is convenient, the time is saved, and the smooth performance of insulating oil detection work of the oil immersed transformer is ensured.
Claims (8)
1. A sealed oil gun that gets for 220 kilovolt oil immersed transformer, includes gets oil gun rifle body (4), its characterized in that: the oil extraction device further comprises a main pipeline (7), an oil extraction pipeline (8), a waste oil pipeline (6), an oil extraction injector (9), an oil extraction three-way valve (10), an oil extraction hose (11) and a waste oil recovery bottle (12), wherein the main pipeline (7) is arranged in the oil extraction gun body (4); an inner hexagonal screw hole (1) is formed in the head of the oil extraction gun body (4), a rubber pad (2) coaxial with the oil extraction gun body is arranged at the tail end of the inner hexagonal screw hole (1), the inner hexagonal screw hole (1) is used for being matched with a hexagonal bolt on a transformer oil drain nozzle, meanwhile, the inner hexagonal screw hole (1) is communicated with a main pipeline (7), when the oil extraction gun is operated, the oil extraction gun rotates, and the oil extraction gun drives the hexagonal bolt on the transformer oil drain nozzle to rotate through the inner hexagonal screw hole (1), so that the transformer oil drain nozzle is opened, and insulating oil enters the main pipeline (7); the oil extraction pipeline (8) and the waste oil pipeline (6) are respectively connected to the main pipeline (7), a main pipe valve (3) is arranged at the joint of the oil extraction pipeline (8) and the main pipeline (7), and a waste oil pipeline valve (5) is arranged at the joint of the waste oil pipeline (6) and the main pipeline (7); the oil taking injector (9) is connected with an oil taking pipeline (8) through an oil taking hose (11), and an oil taking three-way valve (10) is arranged on the oil taking hose (11); the waste oil recovery bottle (12) is connected with a waste oil pipeline (6).
2. A sealed oil extraction gun for 220 kv oil immersed transformers according to claim 1, characterized by: the rubber cushion (2) is a sealing rubber cushion.
3. A sealed oil extraction gun for 220 kv oil immersed transformers according to claim 1, characterized by: the main pipe valve (3) is a rotary valve and is used for switching insulating oil to enter the waste oil pipeline (6) or the oil extraction pipeline (8).
4. A sealed oil extraction gun for 220 kv oil immersed transformers according to claim 1, characterized by: the oil taking gun body (4) is made of white steel.
5. A sealed oil extraction gun for 220 kv oil immersed transformers according to claim 1, characterized by: the main pipeline (7), the waste oil pipeline (6) and the oil extraction pipeline (8) are all PVC pipes.
6. A sealed oil extraction gun for 220 kv oil immersed transformers according to claim 1, characterized by: the main pipeline (7), the waste oil pipeline (6) and the oil extraction pipeline (8) are PVE pipes.
7. A sealed oil extraction gun for 220 kv oil immersed transformers according to claim 1, characterized by: the oil taking injector (9) is a glass injector.
8. A sealed oil extraction gun for 220 kv oil immersed transformers according to claim 1, characterized by: the waste oil recovery bottle (12) is a glass flask.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222702919.8U CN219319834U (en) | 2022-10-14 | 2022-10-14 | Sealed oil extraction gun for 220 KV oil immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222702919.8U CN219319834U (en) | 2022-10-14 | 2022-10-14 | Sealed oil extraction gun for 220 KV oil immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219319834U true CN219319834U (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222702919.8U Active CN219319834U (en) | 2022-10-14 | 2022-10-14 | Sealed oil extraction gun for 220 KV oil immersed transformer |
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| CN (1) | CN219319834U (en) |
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2022
- 2022-10-14 CN CN202222702919.8U patent/CN219319834U/en active Active
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