Oil-immersed transformer with oil level monitoring mechanism

Abstract

The utility model belongs to the technical field of oil-immersed transformers, and particularly relates to an oil-immersed transformer with an oil level monitoring mechanism, which comprises an oil-immersed transformer body, a mounting frame is welded at the lower end of the oil-immersed transformer body, and radiating fin plates are welded on the surface of the oil-immersed transformer body. An insulator string is arranged at the upper end of the oil-immersed transformer body, a mounting disc is in contact with the upper end of the oil-immersed transformer body and located on the front side of the insulator string, a three-color alarm lamp is arranged at the upper end of the mounting disc, and a fixing plate is fixedly connected to the upper end of the oil-immersed transformer body and located on the right side of the mounting disc. According to the utility model, the floating ball can float according to the oil level of insulating oil in the oil-immersed transformer body, and the three-color alarm lamp can be in a circuit closed state by matching with the arrangement of the structures such as the contact switch I and the contact switch II; and the ultra-low warning oil level of the insulating oil in the oil-immersed transformer body can be alarmed and monitored.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-immersed transformers, and particularly relates to an oil-immersed transformer with an oil level monitoring mechanism. Background Art

[0002] As is well known, an oil-immersed transformer is a common type of power transformer. Its main feature is that the space between the windings and the iron core of the transformer is filled with insulating oil for cooling and insulation. Oil-immersed transformers are usually used in power transmission and distribution systems to step up or step down high-voltage electrical energy and then transmit it to the user side.

[0003] The utility model patent with the publication number CN219286175U discloses an oil-immersed transformer, including: a transformer body and a heating device. An installation part is arranged on the outer wall of the transformer body, and the heating device is installed on the transformer body through the installation part. The heat generated by the heating device can be transferred from the outer wall of the transformer body to the inside of the transformer body. The heating device includes a heating box body and a partition arranged in the heating box body. The heating box body is arranged close to the bottom surface of the transformer body; the partition divides the space in the heating box body into multiple heating cavities, solving the technical problem that it is difficult to guarantee the reliability of the oil-immersed transformer during storage and operation in a low-temperature environment.

[0004] However, there are still certain deficiencies in the existing oil-immersed transformers: Most of the existing oil-immersed transformers adopt the assembly form of a housing and a cover to place the windings, iron core, insulating oil, etc. Due to the influence of the shape and assembly form of the oil-immersed transformer body itself, it is necessary for operators to intermittently monitor and inspect the oil level of the insulating oil, which is undoubtedly inconvenient to use. Content of the Utility Model

[0005] The purpose of the utility model is to provide an oil-immersed transformer with an oil level monitoring mechanism, solving the problem that most of the existing oil-immersed transformers adopt the assembly form of a housing and a cover to place the windings, iron core, insulating oil, etc. Due to the influence of the shape and assembly form of the oil-immersed transformer body itself, it is necessary for operators to intermittently monitor and inspect the oil level of the insulating oil, which is inconvenient to use.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An oil-immersed transformer with an oil level monitoring mechanism, including an oil-immersed transformer body. An installation frame is welded to the lower end of the oil-immersed transformer body. Heat dissipation fins are welded to the surface of the oil-immersed transformer body. An insulator string is provided at the upper end of the oil-immersed transformer body. An installation plate is in contact with the upper end of the oil-immersed transformer body and is located in front of the insulator string. A three-color alarm lamp is provided at the upper end of the installation plate. A fixing plate is fixedly connected to the upper end of the oil-immersed transformer body and is located on the right side of the installation plate. A plug plate is slidably connected to the inner wall of the fixing plate. The horizontal part of the plug plate is slidably connected to the installation plate. A spring is welded to the vertical part of the plug plate. The other end of the spring is welded to the fixing plate. An oil level monitoring mechanism is provided inside the oil-immersed transformer body.

[0007] Preferably, there are two installation frames, and the two installation frames are symmetrically distributed on the oil-immersed transformer body. Through the setting of the installation frames, the oil-immersed transformer body can be installed and used.

[0008] Preferably, there are multiple heat dissipation fins, and the multiple heat dissipation fins are evenly distributed on the oil-immersed transformer body. Through the setting of the heat dissipation fins, the heat dissipation effect of the oil-immersed transformer body can be ensured.

[0009] Preferably, a plug block is fixedly connected to the lower end of the installation plate, and the plug block is slidably connected to the oil-immersed transformer body. Through the presence of the plug block, the installation plate can be inserted and positioned for use.

[0010] Preferably, the oil level monitoring mechanism includes an installation cylinder. The installation cylinder is fixedly connected to the inner bottom of the oil-immersed transformer body. A circulation hole is formed on the surface of the installation cylinder. A contact switch one is fixedly connected to the inner side wall of the installation cylinder. The contact switch one is electrically connected to the three-color alarm lamp. A floating ball is slidably connected to the inner wall of the installation cylinder. A contact switch two is fixedly connected to the lower side of the floating ball. The contact switch two is electrically connected to the three-color alarm lamp. A guide rod is fixedly connected to the upper side of the floating ball. The guide rod is slidably connected to the installation cylinder. Guide blocks are fixedly connected to both the left and right sides of the guide rod. The guide blocks are slidably connected to the installation cylinder. Through the combined use of structures such as the contact switch two and the contact switch one, when insulating oil with a low oil level appears, the three-color alarm lamp forms a closed circuit, thereby monitoring and alarming the low oil level.

[0011] Preferably, there are multiple circulation holes, and the multiple circulation holes are arranged in a circular array on the installation cylinder. Through the setting of the circulation holes, the normal circulation of the insulating oil can be ensured.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The utility model makes the insertion block inserted into the oil-immersed transformer body by pushing the mounting plate into contact with the oil-immersed transformer body. Under the structures such as the insertion plate and the spring, the mounting plate can be limited, so that the mounting plate drives the three-color alarm lamp to be stable, which is convenient for the operators to install and use quickly. And under the action of the three-color alarm lamp, it can be used for subsequent insulation oil level alarm.

[0014] 2. Through the setting of the floating ball, the utility model can float according to the oil level of the insulating oil inside the oil-immersed transformer body. With the setting of the first contact switch, the second contact switch and other structures, the three-color alarm lamp can be in a circuit closed state, so as to alarm and monitor the ultra-low warning oil level of the insulating oil inside the oil-immersed transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional view of the overall structure of the utility model;

[0016] Figure 2 is of the Figure 1 partial front elevation sectional view of the utility model;

[0017] Figure 3 is of the Figure 2 amplified view of the oil level monitoring mechanism of the utility model;

[0018] Figure 4 is of the Figure 1 amplified view at position A of the utility model.

[0019] In the figure: 1. Oil-immersed transformer body; 2. Mounting frame; 3. Heat dissipation fin; 4. Insulator string; 5. Mounting plate; 6. Three-color alarm lamp; 7. Insertion block; 8. Fixed plate; 9. Insertion plate; 10. Spring; 11. Oil level monitoring mechanism; 111. Mounting cylinder; 112. Circulation hole; 113. First contact switch; 114. Floating ball; 115. Second contact switch; 116. Guide rod; 117. Guide block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4, An oil-immersed transformer with an oil level monitoring mechanism, including an oil-immersed transformer body 1. A mounting bracket 2 is welded to the lower end of the oil-immersed transformer body 1. Heat dissipation fins 3 are welded to the surface of the oil-immersed transformer body 1. An insulator string 4 is arranged at the upper end of the oil-immersed transformer body 1. A mounting plate 5 is in contact with the upper end of the oil-immersed transformer body 1 and is located in front of the insulator string 4. A three-color alarm lamp 6 is arranged at the upper end of the mounting plate 5. A fixing plate 8 is fixedly connected to the upper end of the oil-immersed transformer body 1 and is located on the right side of the mounting plate 5. A plug plate 9 is slidably connected to the inner wall of the fixing plate 8. The horizontal part of the plug plate 9 is slidably connected to the mounting plate 5. A spring 10 is welded to the vertical part of the plug plate 9. The other end of the spring 10 is welded to the fixing plate 8.

[0022] Please refer to Figure 1 , Figure 2 , There are two mounting brackets 2, and the two mounting brackets 2 are symmetrically distributed on the oil-immersed transformer body 1. Through the setting of the mounting brackets 2, the oil-immersed transformer body 1 can be installed and used. There are multiple heat dissipation fins 3, and the multiple heat dissipation fins 3 are evenly distributed on the oil-immersed transformer body 1. Through the setting of the heat dissipation fins 3, the heat dissipation effect of the oil-immersed transformer body 1 can be ensured. A plug block 7 is fixedly connected to the lower end of the mounting plate 5, and the plug block 7 is slidably connected to the oil-immersed transformer body 1. Through the existence of the plug block 7, the mounting plate 5 can be inserted and positioned for use.

[0023] Please refer to Figure 1 , Figure 2 , Figure 3 , An oil level monitoring mechanism 11 is arranged inside the oil-immersed transformer body 1. The oil level monitoring mechanism 11 includes a mounting cylinder 111. The mounting cylinder 111 is fixedly connected to the inner bottom of the oil-immersed transformer body 1. A circulation hole 112 is formed on the surface of the mounting cylinder 111. There are multiple circulation holes 112, and the multiple circulation holes 112 are arranged in a circular array on the mounting cylinder 111. Through the setting of the circulation holes 112, the normal circulation of the insulating oil can be ensured. A contact switch 113 is fixedly connected to the inner side wall of the mounting cylinder 111, and the contact switch 113 is electrically connected to the three-color alarm lamp 6. A floating ball 114 is slidably connected to the inner wall of the mounting cylinder 111. A contact switch 115 is fixedly connected to the lower side of the floating ball 114, and the contact switch 115 is electrically connected to the three-color alarm lamp 6. A guide rod 116 is fixedly connected to the upper side of the floating ball 114, and the guide rod 116 is slidably connected to the mounting cylinder 111. Guide blocks 117 are fixedly connected to both the left and right sides of the guide rod 116, and the guide blocks 117 are slidably connected to the mounting cylinder 111. Through the coordinated use of structures such as the contact switch 115 and the contact switch 113, when insulating oil with a low oil level appears, the three-color alarm lamp 6 forms a closed circuit, thereby monitoring and alarming the low oil level.

[0024] The specific implementation process of the present utility model is as follows: During use, by pushing the plug board 9 to move to the right, the plug board 9 slides along the inner wall of the fixed plate 8, the spring 10 deforms, and then the mounting disc 5 is pushed into contact with the oil-immersed transformer body 1, so that the plug block 7 is inserted into the oil-immersed transformer body 1, and the plug board 9 is released to make the spring 10 recover its deformation, so as to pull the plug board 9 into the mounting disc 5 to perform plug-in limit on the mounting disc 5, thereby making the three-color alarm lamp 6 stable and facilitating the quick installation and use by the operating personnel;

[0025] Through the setting of the flow hole 112, the normal circulation of the insulating oil inside the mounting cylinder 111 can be ensured. Under the action of the buoyancy of the insulating oil, the floating ball 114 can be in a floating state. When the insulating oil gradually volatilizes and becomes less, the floating ball 114 gradually moves down along the inner wall of the mounting cylinder 111. When the floating ball 114 drives the contact switch two 115 to contact the contact switch one 113, the three-color alarm lamp 6 is in a closed-loop state, and thus the three-color alarm lamp 6 flashes to monitor and alarm the insulating oil at an ultra-low oil level.

[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An oil-immersed transformer with an oil level monitoring mechanism, comprising an oil-immersed transformer body (1), characterized in that: The lower end of the oil-immersed transformer body (1) is welded with a mounting frame (2), the surface of the oil-immersed transformer body (1) is welded with heat dissipation fins (3), the upper end of the oil-immersed transformer body (1) is provided with an insulator string (4), the upper end of the oil-immersed transformer body (1) and in front of the insulator string (4) is in contact with a mounting plate (5), the upper end of the mounting plate (5) is provided with a three-color alarm lamp (6), the upper end of the oil-immersed transformer body (1) and on the right side of the mounting plate (5) is fixedly connected with a fixing plate (8), the inner wall of the fixing plate (8) is slidably connected with a plug board (9), the horizontal part of the plug board (9) is slidably connected with the mounting plate (5), the vertical part of the plug board (9) is welded with a spring (10), the other end of the spring (10) is welded with the fixing plate (8), and an oil level monitoring mechanism (11) is arranged inside the oil-immersed transformer body (1).

2. The oil-immersed transformer with an oil level monitoring mechanism according to claim 1, wherein: There are two mounting frames (2), and the two mounting frames (2) are symmetrically distributed on the oil-immersed transformer body (1).

3. The oil-immersed transformer with an oil level monitoring mechanism according to claim 1, characterized in that: There are multiple heat dissipation fins (3), and the multiple heat dissipation fins (3) are evenly distributed on the oil-immersed transformer body (1).

4. The oil-immersed transformer with an oil level monitoring mechanism according to claim 1, characterized in that: The lower end of the mounting plate (5) is fixedly connected with a plug block (7), and the plug block (7) is slidably connected with the oil-immersed transformer body (1).

5. The oil-immersed transformer with an oil level monitoring mechanism according to claim 1, characterized in that: The oil level monitoring mechanism (11) includes a mounting cylinder (111), the inner bottom of the oil-immersed transformer body (1) is fixedly connected with a mounting cylinder (111), a circulation hole (112) is formed in the surface of the mounting cylinder (111), a first contact switch (113) is fixedly connected to the inner side wall of the mounting cylinder (111), the first contact switch (113) is electrically connected with the three-color alarm lamp (6), a floating ball (114) is slidably connected to the inner wall of the mounting cylinder (111), a second contact switch (115) is fixedly connected to the lower side of the floating ball (114), the second contact switch (115) is electrically connected with the three-color alarm lamp (6), a guide rod (116) is fixedly connected to the upper side of the floating ball (114), the guide rod (116) is slidably connected with the mounting cylinder (111), guide blocks (117) are fixedly connected to both the left and right sides of the guide rod (116), and the guide blocks (117) are slidably connected with the mounting cylinder (111).

6. The oil-immersed transformer with an oil level monitoring mechanism according to claim 5, characterized in that: There are multiple circulation holes (112), and the multiple circulation holes (112) are arranged in a circular array on the mounting cylinder (111).

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