Auxiliary test device for testing sealing performance of transformer
By designing the transformer sealing performance test auxiliary test device, the transformer comes with the oil level indicator for testing, the damage caused by the shell opening is solved and simple sealing performance detection is achieved.
Patent Information
- Application Number
- CN202422449614.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-11
AI Technical Summary
When testing the sealing performance of oil-immersed transformers, the prior art needs to open holes in the transformer housing, resulting in the drop of iron chips, causing the transformer to be scrapped and unable to be sold.
A transformer sealing performance test auxiliary test device is designed, and the transformer oil level indicator is used for testing. There is no need to open a hole in the housing, and sealing performance detection is achieved through the intake pipe and pressure gauge.
It realizes the simplicity of transformer sealing performance testing, avoids damage caused by shell openings, and ensures transformer integrity.
Smart Images
Figure CN223179711U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical direction of electrical equipment detection, and particularly relates to an auxiliary test device for testing the sealing performance of a transformer. Background Art
[0002] Oil-immersed transformers usually need to be tested for sealing performance. Currently, most testing methods involve opening an opening at the top of the transformer and connecting an air pipe for inflation. This will leave an artificially opened through-hole on the transformer housing, and iron filings will fall into the transformer during the opening process, rendering the transformer used for testing directly scrapped and unable to be sold. Summary of the Utility Model
[0003] The purpose of the utility model is to assemble the existing equipment to solve the problems raised in the above background art.
[0004] To solve the above technical problems, the utility model provides the following technical solution: an auxiliary test device for testing the sealing performance of a transformer, including a housing, characterized in that: a base is provided at the bottom of the housing, heat sinks are provided on the housing, wiring terminals are provided on the left side of the top of the housing, an indicating tube is provided on the right side of the top of the housing, an observation window is provided in the middle of the indicating tube, a mating tube is provided on the top of the indicating tube, an air inlet pipe is provided in the middle of the right side of the mating tube, a valve is provided on the upper part of the air inlet pipe, and a pressure gauge is provided on the top of the mating tube.
[0005] Preferably, a plug is provided at the right end of the air inlet pipe.
[0006] Advantages of the Utility Model
[0007] Compared with the prior art, the utility model realizes the industry of testing the sealing performance of a transformer with a relatively simple structure, without opening holes on the transformer housing, and can be operated by using the built-in transformer oil level indicator. Description of the Drawings
[0008] The drawings are used to provide a further understanding of the utility model and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model and do not constitute a limitation to the utility model. In the drawings:
[0009] Figure 1 is the overall structure diagram of the utility model;
[0010] Figure 2 is the structural schematic diagram of the indicating tube of the utility model. Detailed Embodiment
[0011] The technical solution of the present utility model will be further described in detail below in conjunction with the preferred embodiments and their accompanying drawings in a non-limiting manner. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0012] An auxiliary test device for testing the sealing performance of a transformer, including a housing 4, characterized in that: a base 3 is provided at the bottom of the housing 4, heat sinks 5 are provided on the housing 4, a terminal 2 is provided on the left side of the top of the housing 4, an indicating tube 6 is provided on the right side of the top of the housing 4, an observation window 10 is provided in the middle of the indicating tube 6, a mating tube 1 is provided at the top of the indicating tube 6, an air inlet pipe 7 is provided in the middle of the right side of the mating tube 1, a valve 9 is provided on the upper part of the air inlet pipe 7, a pressure gauge 8 is provided at the top of the mating tube 1, a plug 11 is provided at the right end of the air inlet pipe 7. Before the test, a corresponding mating tube 1 needs to be made according to the inner diameter of the indicating tube 6, and the two are fitted by threads. Before assembly, first remove the seal on the upper end of the original indicating tube 6, and then install the mating tube 1. After installation, connect the air inlet pipe 7 to an air pump, open the valve 9 to inflate and pressurize the inside of the transformer. When the value of the pressure gauge 8 reaches the specified requirement, close the valve 9, record the value of the pressure gauge 8, observe it every two hours, and the observation time is 24 hours. If the value of the pressure gauge 8 does not change after 24 hours, then it can be determined that the sealing performance of the transformer meets the standard. Of course, the integrity of the transformer housing 4 also needs to be observed to see if the housing 4 is deformed.
[0013] Of course, there is also a problem, that is, the influence of the sealing performance of the air inlet pipe 7 on the test. In this regard, after the inflation and pressurization are completed, the air inlet pipe is sealed with a plug 11 with internal threads, and a plastic sheet is installed on the right side of the plug 11. The plastic sheet will break when it is under pressure to release the pressure. If the value of the pressure gauge 8 decreases and the sheet breaks, it means that the air inlet pipe 7 does not have good sealing performance and the test needs to be carried out again to determine the sealing performance of the transformer.
[0014] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0015] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. An auxiliary test device for testing the sealing performance of a transformer, comprising a housing (4), characterized in that: A base (3) is provided at the bottom of the housing (4), a heat sink (5) is provided on the housing (4), a terminal (2) is provided on the left side of the top of the housing (4), an indicating tube (6) is provided on the right side of the top of the housing (4), an observation window (10) is provided in the middle of the indicating tube (6), a mating tube (1) is provided at the top of the indicating tube (6), an intake pipe (7) is provided in the middle of the right side of the mating tube (1), a valve (9) is provided at the upper part of the intake pipe (7), and a pressure gauge (8) is provided at the top of the mating tube (1).
2. The auxiliary test device for testing the sealing performance of a transformer according to claim 1, wherein: A plug (11) is provided at the right end of the intake pipe (7).