Visualization device for intelligent maintenance-free respirator of transformer

Abstract

The utility model discloses a visual device for a transformer intelligent maintenance-free respirator, which relates to the technical field of maintenance-free respirators and comprises an oil storage seat, an isolation seat and a flange seat, an oil storage cavity is formed between the oil storage seat and the isolation seat, oil is arranged in the oil storage cavity, and a gas exchange cavity is formed between the flange seat and the isolation seat. And the gas exchange cavity is filled with adsorption particles. According to the visual device for the intelligent maintenance-free respirator of the transformer, the oil storage base, the isolation base, the flange base, the first oil liquid cavity, the second oil liquid cavity and the gas exchange cavity which are specially designed are matched with one another, the exhaling and inhaling states of the maintenance-free moisture absorber can be visually observed through the motion state of oil liquid, meanwhile, gas can be subjected to secondary filtering, and the visual effect is achieved. And the dryness of sucked gas is ensured more safely and effectively, so that the safety of the transformer is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance-free breather for oil-immersed transformers, in particular to a visual device for intelligent maintenance-free breather of transformers. Background Technique

[0002] The moisture content in oil-immersed transformers is an important index affecting the aging of insulating oil and insulating paper and the insulation performance. During the long-term operation of transformers, due to reasons such as oxidation of insulating oil and external intrusion, the internal water content increases. Research shows that: the critical value of the harm of the water content in insulating paper is that when it reaches 2%, the breakdown voltage decreases, and when it reaches 5%, the insulation strength drops severely. To ensure the internal insulation performance of transformers, it is necessary to control the internal water content within a reasonable range.

[0003] Transformer moisture absorbers, also called transformer breathers or transformer driers, are generally equipped with moisture absorbers for large and medium-sized transformers used in the power grid. Such a moisture absorber is a glass container filled with moisture-absorbing materials such as discolored silica gel, which filters the moisture in the air and prevents the aging of the insulating oil of the transformer. The air entering the main transformer is filtered by the moisture absorber to remove dust and moisture in the air, so that dry and pure air enters the main transformer.

[0004] The existing maintenance-free breather cannot intuitively see the breathing state of the transformer, nor can it intuitively judge whether the internal air is dry; it can only rely solely on the sensor to judge according to the set threshold, and then give corresponding feedback indications. Content of the Utility Model

[0005] The purpose of the utility model is to provide a visual device for an intelligent maintenance-free breather of a transformer, which can intuitively see the breathing state of the transformer and can also intuitively judge whether the internal air is dry.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A visual device for an intelligent maintenance-free breather of a transformer, comprising an oil storage base, an isolation base, and a flange base. The oil storage base and the isolation base are fixed to each other, and an oil storage cavity is formed between the oil storage base and the isolation base. A lower conduit passing through the oil storage base is arranged in the middle area of the oil storage base. An inner oil cup base is fixedly installed at a part of the outer sidewall in the upper area of the oil storage base. A first glass cylinder and a second glass cylinder are arranged on the oil storage cavity. The second glass cylinder is arranged on the top of the inner oil cup base and inside the protruding edge on the outer side of the top of the inner oil cup base. A first oil liquid cavity is formed inside the first glass cylinder and outside the second glass cylinder, and a second oil liquid cavity is formed inside the second glass cylinder. Oil liquid is placed in both the first oil liquid cavity and the second oil liquid cavity. The flange base is fixed to the isolation base, and a gas exchange cavity is formed between the flange base and the isolation base. The gas exchange cavity is filled with adsorption particles. A third glass cylinder is arranged outside the gas exchange cavity. The third glass cylinder is arranged on the top of the isolation base and inside the protruding edge on the outer side of the top of the isolation base. The gas exchange cavity inside the third glass cylinder is communicated with the oil storage cavity inside the first glass cylinder. An upper conduit communicating with the gas exchange cavity is arranged at the top end of the flange base.

[0008] In order to facilitate the movement of the oil liquid between the first oil liquid cavity and the second oil liquid cavity, a plurality of through holes communicating with the inner cavity of the first glass cylinder and the inner cavity of the second glass cylinder are opened on the inner oil cup base.

[0009] In order to facilitate the connection between the gas exchange cavity and the first oil liquid cavity, a plurality of first guide holes are evenly arranged on the isolation base, and a sealing gasket is arranged on the top of the isolation base. The inner sidewall of the sealing gasket is outside the first guide holes. A barrier mesh plate inside the sealing gasket is also arranged on the top of the isolation base. A reinforcing plate is arranged at the bottom of the isolation base, and a plurality of second guide holes matching the specifications of the first guide holes are arranged on the reinforcing plate.

[0010] In order to facilitate the disassembly and assembly between the oil storage base, the isolation base, and the flange base, the oil storage base, the isolation base, and the flange base are detachably connected by stainless steel full-threaded screws and fixed with hex nuts.

[0011] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: Through the mutual cooperation of the specially designed oil storage base, isolation base, flange base, and their first oil liquid cavity, second oil liquid cavity, and gas exchange cavity, the visual device for the intelligent maintenance-free breather of the transformer can directly observe the breathing state of the maintenance-free moisture absorber through the movement state of the oil liquid, and at the same time, it can also perform secondary filtration on the gas, more safely and effectively ensuring the dryness of the inhaled gas, thereby greatly improving the safety of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the accompanying drawings:

[0013] Figure 1 is a three-dimensional structural schematic diagram of the visualizing device for the intelligent maintenance-free breather of the transformer of the present utility model;

[0014] Figure 2 is an exploded structural schematic diagram of the visualizing device for the intelligent maintenance-free breather of the transformer of the present utility model Figure 1 ;

[0015] Figure 3 is an exploded structural schematic diagram of the visualizing device for the intelligent maintenance-free breather of the transformer of the present utility model Figure 2 ;

[0016] Figure 4 is a cross-sectional view of the visualizing device for the intelligent maintenance-free breather of the transformer of the present utility model;

[0017] Figure 5 is a structural schematic diagram of the isolation seat of the present utility model. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-5 , the present utility model provides a technical solution: a visualizing device for an intelligent maintenance-free breather of a transformer, including an oil storage seat 1, an isolation seat 2, and a flange seat 3 arranged in sequence from bottom to top. An oil storage cavity 4 is formed between the oil storage seat 1 and the isolation seat 2. Three protruding bolt seats 7 are evenly arranged on the outer side wall of the oil storage seat 1, and a lower conduit 8 passing through the oil storage seat 1 is arranged in the middle area of the oil storage seat 1. An inner oil cup seat 9 is fixedly installed at a part of the outer side wall of the oil storage seat 1 in the area above the oil storage seat 1. A first glass cylinder 5 and a second glass cylinder 6 are arranged on the oil storage cavity 4, wherein the second glass cylinder 6 is arranged on the top of the inner oil cup seat 9 and inside the protruding edge on the top outer side of the inner oil cup seat 9;

[0020] A first oil liquid cavity is formed inside the first glass cylinder 5 and outside the second glass cylinder 6, and a second oil liquid cavity is formed inside the second glass cylinder 6. Oil liquid is placed in both the first oil liquid cavity and the second oil liquid cavity. In this embodiment, the oil liquid can be 25# transformer oil;

[0021] A number of through holes 12 are provided on the inner oil cup seat 9, and the first oil chamber and the second oil chamber are communicated through the through holes 12;

[0022] Three protruding bolt seats 7 are also evenly provided on the outer side wall of the isolation seat 2. A number of first guide holes 13 are evenly provided on the isolation seat 2, and a sealing gasket 14 is provided on the top of the isolation seat 2. The inner side wall of the sealing gasket 14 is outside the first guide holes 13. A barrier mesh plate 15 is also provided on the top of the isolation seat 2 inside the sealing gasket 14. The barrier mesh plate 15 is used to filter impurities. A reinforcing plate 16 is provided at the bottom of the isolation seat 2. A number of second guide holes 17 matching the specifications of the first guide holes 13 are provided on the reinforcing plate 16, and the first guide holes 13 and the second guide holes 17 need to be aligned when installing the reinforcing plate 16;

[0023] Three protruding bolt seats 7 are also evenly provided on the outer side wall of the flange seat 3. A gas exchange chamber 18 is formed between the isolation seat 2 and the flange seat 3. Adsorption particles are filled in the gas exchange chamber 18. A third glass cylinder 19 is provided outside the gas exchange chamber 18. The third glass cylinder 19 is provided on the top of the isolation seat 2 and inside the inner convex edge on the top of the isolation seat 2. The position of the first guide holes 13 is inside the third glass cylinder 19;

[0024] The oil storage seat 1, the isolation seat 2, and the flange seat 3 are connected by stainless steel full-threaded screws 20 provided on the bolt seats 7 and fixed with hexagon nuts 21;

[0025] First nitrile rubber gaskets 10 are installed between the second glass cylinder 6 and the inner oil cup seat 9 and between the second glass cylinder 6 and the bottom of the isolation seat 2, thereby improving the sealing performance between the second glass cylinder 6 and the inner oil cup seat 9. The first glass cylinder 5 is provided on the top of the oil storage seat 1 and inside the inner convex edge on the top of the oil storage seat 1. Second nitrile rubber gaskets 11 are installed between the first glass cylinder 5 and the oil storage seat 1 and between the first glass cylinder 5 and the bottom of the reinforcing plate 16, thereby improving the sealing performance inside the first glass cylinder 5. Third nitrile rubber gaskets 22 are installed between the third glass cylinder 19 and the top of the isolation seat 2 and between the third glass cylinder 19 and the bottom of the flange seat 3, thereby improving the sealing performance inside the third glass cylinder 19;

[0026] An upper conduit 23 is provided on the top of the flange seat 3 and is connected to a maintenance-free breather, so that the breathing change of the maintenance-free breather affects the oil fluid.

[0027] The gas exhaled by the maintenance-free breather first enters the gas exchange chamber 18. The adsorption particles in the gas exchange chamber 18 adsorb the moisture and impurities in the gas. The gas enters the inner cavity of the first glass cylinder 5 through the first guide hole 13. The oil in the inner cavity of the first glass cylinder 5 enters the inner cavity of the second glass cylinder 6 through the through hole 12 under the air pressure. The oil in the second glass cylinder 6 rises. On the contrary, when the maintenance-free breather inhales, the oil in the second glass cylinder 6 drops. By observing the up and down movement of the oil in the second glass cylinder 6, the breathing state of the maintenance-free breather can be intuitively observed. If there is no movement, it means there is a leak or blockage and maintenance is required.

[0028] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0029] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A visualization device for transformer intelligent maintenance-free respirator, characterized in that: The invention comprises an oil storage seat (1), an isolating seat (2) and a flange seat (3), wherein the oil storage seat (1) and the isolating seat (2) are fixed to each other, and an oil storage cavity (4) is formed between the oil storage seat (1) and the isolating seat (2), and a lower conduit (8) penetrating the oil storage seat (1) is arranged in the middle area of ​​the oil storage seat (1), and an inner oil cup seat (9) is fixedly installed on a part of the outer side wall of the upper area of ​​the oil storage seat (1), and a first glass cylinder (5) and a second glass cylinder (6) are arranged on the oil storage cavity (4), wherein the second glass cylinder (6) is arranged on the top of the inner oil cup seat (9) and is located on the inner side of the outer side protruding edge of the top of the inner oil cup seat (9), and a first oil cavity is formed on the inner side of the first glass cylinder (5) and the outer side of the second glass cylinder (6), and the second glass cylinder (9) is fixedly installed on the outer side of the inner oil cup seat (9), and a first oil cavity is formed on the inner side of the first glass cylinder (5) and the outer side of the second glass cylinder (6). A second oil chamber is formed inside the glass cylinder (6), and oil is placed in both the first oil chamber and the second oil chamber. The flange seat (3) is fixed to the isolation seat (2), and a gas exchange chamber (18) is formed between the flange seat (3) and the isolation seat (2). The gas exchange chamber (18) is filled with adsorption particles. A third glass cylinder (19) is arranged outside the gas exchange chamber (18). The third glass cylinder (19) is arranged at the top of the isolation seat (2) and is located inside the protruding edge of the top outside of the isolation seat (2). The gas exchange chamber (18) in the third glass cylinder (19) is connected to the oil storage chamber (4) in the first glass cylinder (5), and an upper conduit (23) connected to the gas exchange chamber (18) is arranged at the top of the flange seat (3).

2. A visualization device for transformer intelligent maintenance-free respirator according to claim 1, characterized in that: The inner oil cup seat (9) is provided with a plurality of through holes (12) communicating with the inner cavity of the first glass cylinder and the inner cavity of the second glass cylinder (6).

3. A visualization device for transformer intelligent maintenance-free respirator according to claim 2, characterized in that: A plurality of first guide holes (13) are evenly arranged on the isolation seat (2), and a sealing gasket (14) is arranged on the top of the isolation seat (2), the inner side wall of the sealing gasket (14) is located outside the first guide hole (13), and a blocking mesh plate (15) located inside the sealing gasket (14) is also arranged on the top of the isolation seat (2), and a reinforcing plate (16) is arranged on the bottom of the isolation seat (2), and a plurality of second guide holes (17) matching the specifications of the first guide holes (13) are arranged on the reinforcing plate (16).

4. A visualization device for transformer intelligent maintenance-free respirator according to claim 3, characterized in that: The oil storage seat (1), the isolation seat (2) and the flange seat (3) are detachably connected via a stainless steel full-thread screw (20) and are fixed by a hexagonal nut (21).

Images