Novel transformer oil chromatography intensive care device

Abstract

The utility model discloses a novel transformer oil chromatography intensive care device, and relates to the technical field of transformers. The power distribution box comprises a box body, wherein a heat dissipation opening is formed in one side of the box body; the fixing rod is in threaded fit with the interior of the heat dissipation opening, a first annular groove is formed in the outer side wall of the fixing rod, a scraping plate is rotationally matched with the first annular groove, brushes are evenly distributed on one side of the scraping plate, and one end of each brush is matched with one side of the heat dissipation opening. Through the arrangement of the scraper, the scraper drives the brush to rotate on one side of the heat dissipation opening under the action of the holding rod, impurities accumulated in the heat dissipation opening are cleaned through the rotating brush, and the situation that the efficiency of ventilation between the heat dissipation opening and the outside is affected due to impurity accumulation is reduced; and the problem that parts in the box body are damaged due to over-high temperature is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of transformers, and specifically relates to a new type of transformer oil chromatogram intensive care device. Background Technique

[0002] As a core device of the power grid, the operating state of a transformer is a key link in the reliability of power grid power supply. For the currently widely used oil-immersed transformers, when thermal faults, discharge faults, or oil and paper aging occur inside, a variety of gases will be generated, mainly hydrogen, hydrocarbon gases (methane, ethane, ethylene, acetylene, propane, propylene, etc.), carbon monoxide, carbon dioxide, etc. As the fault develops, the bubbles formed by these decomposed gases will undergo convection and diffusion in the oil and continuously dissolve in the oil. Using the method of analyzing dissolved gases in transformer oil to diagnose and predict transformer faults is the main technical means to achieve the condition-based maintenance of transformers. The components and contents of the gases generated by transformer faults are one of the main bases for judging the fault types. Hydrogen and acetylene in the oil are important characteristic gases, which can reflect the early discharge faults of transformers. Timely and accurately detecting hydrogen and acetylene dissolved in insulating oil is an effective method for predicting potential internal faults and early diagnosing the development of electrical equipment.

[0003] However, the new type of transformer oil chromatogram intensive care device has the following disadvantages when in use:

[0004] When a transformer is in use, it needs to be cooled through a heat dissipation port, which will keep the air circulation between the transformer and the outside world through the heat dissipation port, thereby protecting the safety of the internal components of the transformer. However, when the existing heat dissipation port maintains air circulation with the outside world, impurities will accumulate inside it. If the impurities are not cleaned in time, it will affect the air circulation between the inside of the transformer and the outside world, and thus it is very easy to cause the problem that the internal components are damaged due to excessive temperature of the internal components.

[0005] Therefore, a new type of transformer oil chromatogram intensive care device is proposed to solve the above disadvantages. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a new type of transformer oil chromatogram intensive care device.

[0007] To solve the above technical problem, the basic concept of the technical solution adopted by the utility model is:

[0008] A new type of transformer oil chromatogram intensive care device includes a box body, and a heat dissipation port is opened on one side of the box body;

[0009] A fixing rod with a screw thread fit inside the heat dissipation opening. A first annular groove is provided on the outer side wall of the fixing rod. A scraping plate is rotatably fitted on the first annular groove. A plurality of brushes are evenly arranged on one side of the scraping plate. One end of the brushes is fitted with one side of the heat dissipation opening, facilitating the cleaning of impurities inside the heat dissipation opening by the brushes.

[0010] Optionally, a second annular groove is provided on the fixing rod. The second annular groove is communicated with the first annular groove. An annular plate is rotatably fitted inside the second annular groove. The cross sections of the annular plate and the second annular groove are L-shaped. A spring is installed between one side of the annular plate and the scraping plate, facilitating the reset of the annular plate under the elastic action of the spring.

[0011] Optionally, a through hole is provided at one end of the scraping plate. A U-shaped plate is installed on one side of the scraping plate. A grip rod is fixedly connected to one side of the scraping plate, facilitating the rotation of the scraping plate by driving the grip rod.

[0012] After adopting the above technical solutions, the present utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the present utility model does not necessarily need to achieve all the advantages described below:

[0013] The provided scraping plate enables the scraping plate to drive the brushes to rotate on one side of the heat dissipation opening under the action of the grip rod, and the accumulated impurities inside the heat dissipation opening are cleaned by the rotating brushes, reducing the efficiency of the heat dissipation opening being affected by the accumulation of impurities in the air circulation with the outside world, and reducing the problem of damage to the internal components of the box due to excessive temperature.

[0014] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0015] The following drawings in the description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0016] Figure 1 It is a three-dimensional structure diagram of the present utility model.

[0017] Figure 2 It is a first partial three-dimensional structure diagram of the present utility model.

[0018] Figure 3 It is a second partial three-dimensional structure diagram of the present utility model.

[0019] Figure 4 It is a three-dimensional structure diagram of the present utility model.

[0020] Figure 5This is a three-dimensional structural schematic diagram of the present utility model.

[0021] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0022] Box body 1, heat dissipation port 101, fixing rod 2, first annular groove 201, second annular groove 202, annular plate 203, scraping plate 3, through hole 301, spring 302, U-shaped plate 303, grip rod 304.

[0023] It should be noted that these attached drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0024] Now, the present utility model will be further described in detail with reference to the attached drawings.

[0025] Please refer to Figures 1-5 As shown, in this embodiment, a new type of transformer oil chromatographic intensive care device is provided, including a box body 1, and a heat dissipation port 101 is opened on one side of the box body 1;

[0026] A fixing rod 2 threadedly fitted inside the heat dissipation port 101, a first annular groove 201 is opened on the outer side wall of the fixing rod 2, a scraping plate 3 is rotatably fitted on the first annular groove 201, and a brush is evenly arranged on one side of the scraping plate 3, and one end of the brush is fitted with one side of the heat dissipation port 101, which facilitates the cleaning of impurities inside the heat dissipation port 101 by the brush.

[0027] When it is necessary to clean the impurities accumulated inside the heat dissipation port 101, first thread one end of the fixing rod 2 inside the heat dissipation port 101, and then drive the scraping plate 3 to rotate through the grip rod 304. The scraping plate 3 drives the annular plate 203 to rotate inside the second annular groove 202 through the spring 302, and the scraping plate 3 drives the brush to remove the impurities inside the heat dissipation port 101, thereby completing the cleaning of the impurities in the heat dissipation port 101.

[0028] The provided scraping plate 3 enables the scraping plate 3 to drive the brush to rotate on one side of the heat dissipation port 101 under the action of the grip rod 304, and the accumulated impurities inside the heat dissipation port 101 are cleaned by the rotating brush, reducing the efficiency of the heat dissipation port 101 being affected by the accumulation of impurities in the air circulation with the outside world, and reducing the problem that the components inside the box body 1 are damaged due to excessive temperature.

[0029] On the fixing rod 2 of this embodiment, a second annular groove 202 is formed. The second annular groove 202 communicates with the first annular groove 201. An annular plate 203 is rotatably fitted inside the second annular groove 202. The cross-sections of the annular plate 203 and the second annular groove 202 are L-shaped. A spring 302 is installed between one side of the annular plate 203 and the scraping plate 3, facilitating the reset of the annular plate 203 under the elastic action of the spring 302. A detection element 102 is arranged inside the box body 1, and the detection mechanism adopts the patent document disclosed in the prior art with the publication number of CN204330691U.

[0030] One end of the scraping plate 3 of this embodiment is provided with a through hole 301. A U-shaped plate 303 is installed on one side of the scraping plate 3. One side of the scraping plate 3 is fixedly connected with a grip rod 304, facilitating the rotation of the scraping plate 3 driven by the grip rod 304. The heat dissipation port 101 is provided with internal threads, and the fixing rod 2 is provided with external threads, and the external threads are in threaded fit with the internal threads.

[0031] It should be noted that: the transformer oil chromatographic intensive care device integrates an H2 real-time monitoring system, an acetylene rapid detection system, and a full-component gas chromatography detection system. Among them, the acetylene rapid detection system adopts the photoacoustic spectroscopy detection technology based on laser, and the shortest detection cycle is 3 minutes to obtain the acetylene result. The full-component gas chromatography detection system realizes the detection of eight components in transformer oil. The real-time analysis, real-time monitoring, and real-time diagnosis of the gas content in transformer oil by this system are of great significance for timely discovering internal faults of transformers and avoiding accidents, and leading the development direction of on-line monitoring technology for transformer oil chromatography.

[0032] Decomposition of transformer oil:

[0033] Transformer oil is a mixture composed of many hydrocarbon molecules with different molecular weights. Electrical or thermal faults can break some C-H bonds, accompanied by the production of a small amount of active hydrogen atoms and unstable hydrocarbon free radicals. These hydrogen atoms or free radicals quickly recombine through complex chemical reactions to form H2 and low molecular weight hydrocarbon gases such as CH4, C2H6, C2H4, C2H2, etc., and may also generate solid particles of carbon and hydrocarbon polymers. The oxidation of oil will also generate a small amount of CO and CO2, and the long-term accumulation can reach a significant amount;

[0034] Decomposition of solid insulating materials:

[0035] Solid insulating materials belong to cellulose insulating materials. Cellulose is a long-chain high-polymer hydrocarbon compound composed of many glucose monomers. When the temperature is higher than 105°, the polymer will crack, and when it is higher than 300°, it will completely crack and carbonize. When the polymer cracks, a large amount of CO and CO2, a small amount of low molecular weight hydrocarbon gases, and furfural and its series compounds are produced while water is produced;

[0036] Other sources of gas:

[0037] 1. Water contained in the oil can react with iron to produce H2; when the temperature is relatively high and there is dissolved O2 in the oil, some paints on the equipment may produce a large amount of H2 under the catalysis of certain stainless steels, or the catalytic reaction between stainless steel and oil can also produce a large amount of H2; new stainless steels may also adsorb H2 during the processing or generate H2 during welding; some modified polyimide-type insulating materials can also produce certain characteristic gases when in contact with oil; the oil can also produce certain characteristic gases under sunlight irradiation.

[0038] 2. The sources of gas also include that the injected oil itself contains certain gases; after the equipment failure is eliminated, the gas adsorbed in the body is not completely removed and slowly releases into the oil again; the oil in the oil chamber of the on-load tap-changer of the oil-immersed transformer leaks into the main tank of the transformer. When the selector switch operates at a certain position to form an electric spark, C2H2 will appear in the transformer oil; the gas generated by the failure of the auxiliary equipment of the cooling system will also enter the oil in the transformer body; oil-filled repair welding of the equipment tank will cause the oil to decompose and generate gas, etc.

[0039] Gas production rate method:

[0040] Practice has shown that simply analyzing the absolute value of chromatographic data may not necessarily make a correct judgment on the severity of the fault. Sometimes, although the content has not reached the "attention value", but the growth rate of some gases is very fast, which is often worthy of attention. On the contrary, even if it slightly exceeds the "attention value", but the gas has little growth for a long time, the degree of danger is much smaller. Therefore, special attention should be paid to its relative or absolute growth rate. The oil chromatography guidelines in China recommend using any one of the following two methods to represent the gas production rate.

[0041] The present utility model is not limited to the above embodiments. Anyone should know that the structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, shall fall within the protection scope of the present utility model. The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

Claims

1. A novel transformer oil chromatography intensive care device, characterized in that: include: A box body (1), wherein a heat dissipation opening (101) is provided on one side of the box body (1); A fixing rod (2) is threadedly engaged with the inside of the heat dissipation port (101); a first annular groove (201) is provided on the outer wall of the fixing rod (2); a scraper (3) is rotatably engaged with the first annular groove (201); a brush is evenly distributed on one side of the scraper (3); one end of the brush is engaged with one side of the heat dissipation port (101); and a detection element (102) is arranged in the box body (1).

2. A novel transformer oil chromatography intensive care device according to claim 1, characterized in that: The fixing rod (2) is provided with a second annular groove (202), and the second annular groove (202) is connected to the first annular groove (201).

3. A novel transformer oil chromatography intensive care device according to claim 2, characterized in that: An annular plate (203) is rotatably fitted inside the second annular groove (202), and the cross-sections of the annular plate (203) and the second annular groove (202) are L-shaped.

4. A novel transformer oil chromatography intensive care device according to claim 3, characterized in that: A spring (302) is installed between one side of the annular plate (203) and the scraper (3).

5. A novel transformer oil chromatography intensive care device according to claim 1, characterized in that: One end of the scraper (3) is provided with a through hole (301).

6. A novel transformer oil chromatography intensive care device according to claim 1, characterized in that: A U-shaped plate (303) is installed on one side of the scraper (3).

7. A novel transformer oil chromatography intensive care device according to claim 1, characterized in that: A grip rod (304) is fixedly connected to one side of the scraper (3).

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