Transformer oil tank with good sealing effect

Abstract

The utility model relates to the field of transformers, in particular to a transformer oil tank with a good sealing effect, which comprises a tank body, a tank cover is arranged at the top of the tank body, the upper surface of the tank body is contacted with the lower surface of the tank cover, the front ends and the rear ends of the tank body and the tank cover are respectively connected with a pre-tightening mechanism, and a second sealing strip is connected between the tank body and the tank cover. Outer edges are fixedly connected to the left ends and the right ends of the tank body and the tank cover respectively, bolts are connected to the surfaces of the outer edges in a threaded mode, the transformer oil tank has good sealing performance, the sealing time efficiency of the transformer oil tank is effectively improved, and the problem of transformer oil leakage is solved.

Description

A transformer oil tank with good sealing effect Technical Field

[0001] This utility model relates to the field of transformers, and in particular to a transformer oil tank with good sealing performance. Background Technology

[0002] The transformer tank is the core outer casing component of an oil-immersed transformer, primarily used to contain transformer oil and internal core components. The tank houses the transformer's core, windings, and other core components, and is completely filled with transformer oil to insulate and dissipate heat from these components. As a container for transformer oil, the tank needs excellent sealing performance. Existing transformer tanks typically achieve a seal by placing a gasket at the contact surface between the tank cover and the tank body, and then securing the cover and body with bolts. However, over time, these bolts can loosen due to vibrations generated during operation, leading to a decrease in the tank's seal. Therefore, a transformer tank with superior sealing performance is needed to address the problem of deteriorating sealing performance after prolonged use. Summary of the Invention

[0003] In view of the above situation and to overcome the shortcomings of the existing technology, this device provides a transformer oil tank with good sealing effect. The transformer oil tank has good sealing performance, which effectively increases the sealing time of the transformer oil tank and avoids the problem of transformer oil leakage.

[0004] The purpose of this utility model is to provide a transformer oil tank with good sealing effect, including a tank body, a tank cover on the top of the tank body, the upper surface of the tank body and the lower surface of the tank cover in contact with each other, a pre-tightening mechanism connected to the front end and the rear end of the tank body and the tank cover respectively, a second sealing strip connected between the tank body and the tank cover, and outer edges fixedly connected to the left and right ends of the tank body and the tank cover respectively, with bolts threaded on the surface of the outer edges.

[0005] Furthermore, the upper surface of the box and the lower surface of the box cover are respectively provided with second sealing grooves for placing the second sealing strip.

[0006] Furthermore, a square sealing block is fixedly connected to the upper surface of the box, and a first sealing groove that mates with the square sealing block is opened on the lower surface of the box cover. The square sealing block is located in the first sealing groove, and a first sealing strip is connected between the square sealing block and the first sealing groove.

[0007] Furthermore, the pre-tightening mechanism includes protrusions fixedly connected to the front and rear ends of the box body and the box cover. The protrusions are provided with inclined surfaces on both sides. The upper and lower protrusions on the same side of the box body and the box cover form a pre-tightening block. Clamping mechanisms are slidably connected to both sides of the pre-tightening block. The two clamping mechanisms are connected to each other through a locking mechanism.

[0008] Furthermore, the clamping mechanism includes two clamping blocks, each with a clamping groove on one side. The groove shape matches the pre-tightening block structure. The two clamping blocks are slidably connected to both ends of the pre-tightening block through the clamping grooves, and the front surfaces of the two clamping blocks are connected by a locking mechanism.

[0009] Furthermore, the locking mechanism includes a first fixing block and a second fixing block. The first fixing block and the second fixing block are respectively fixedly connected to the front end surfaces of the left and right clamping blocks. A threaded post is fixedly connected to one side of the first fixing block, and a through hole is opened on the surface of the second fixing block. The other end of the threaded post passes through the through hole of the second fixing block and is threadedly connected to a first nut.

[0010] Furthermore, a second nut is threaded onto the surface of the threaded column, and the second nut is located on one side of the first nut.

[0011] The working principle and usage principle of this utility model are as follows: The cover is placed on the box body. The second sealing groove opened on the contact surface of the cover and the box body can be used to install and place the second sealing strip. The second sealing strip increases the sealing performance of the cover and the box body. At the same time, the square sealing block fixedly connected to the upper surface of the box body inside the second sealing groove can prevent the transformer oil from leaking out. After the cover and the box body are placed together, the top of the square sealing block slides into the first sealing groove to achieve sealing. The first sealing strip set in the square sealing block and the first sealing groove can further increase the sealing effect of the square sealing block. The protrusions set at the front and rear ends of the cover and the box body are combined to form a complete trapezoidal pre-tightening block. The two clamping blocks are clamped by moving simultaneously towards the center position of the pre-tightening block. Then, the position of the two clamping blocks is locked by the locking mechanism to ensure that the two clamping blocks can continuously clamp the two protrusions.

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

[0013] 1. Compared with the prior art, the present invention can effectively improve the sealing performance between the tank body and the tank cover by forming a double seal composed of a first sealing groove, a second sealing groove, a first sealing strip, a second sealing strip and a square sealing block, thus effectively increasing the sealing effect of the transformer oil tank.

[0014] 2. Compared with the prior art, the present invention uses a pre-tightening mechanism to clamp a complete pre-tightening block composed of two upper and lower protrusions, and uses a locking mechanism to fix the two clamping blocks, which further improves the sealing performance of the box body and the box cover. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall structure of a transformer oil tank with good sealing effect according to this utility model;

[0016] Figure 2 is a side cross-sectional view of a transformer oil tank with good sealing effect according to this utility model;

[0017] Figure 3 is a schematic diagram of the tank body and tank cover of a transformer oil tank with good sealing effect according to this utility model.

[0018] Figure 4 is a schematic diagram of the pre-tightening mechanism of a transformer oil tank with good sealing effect according to this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Box cover; 3. Outer edge; 4. Bolt; 5. Protrusion; 6. Pre-tightening mechanism; 61. Clamping block; 62. Clamping groove; 63. First fixing block; 64. Second fixing block; 65. Threaded post; 66. First nut; 67. Second nut; 7. First sealing groove; 8. Square sealing block; 9. First sealing strip; 10. Second sealing strip; 11. Second sealing groove; 12. Threaded hole. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of the embodiments of this application easier to understand, the embodiments of this application are further described below in conjunction with the figures and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of this application and are not intended to limit the embodiments of this application.

[0021] As shown in Figures 1 to 4, a transformer oil tank with good sealing effect includes a tank body 1, a tank cover 2 is provided on the top of the tank body 1, the upper surface of the tank body 1 and the lower surface of the tank cover 2 are in contact with each other, the front end and the rear end of the tank body 1 and the tank cover 2 are respectively connected to a pre-tightening mechanism 6, a second sealing strip 10 is connected between the tank body 1 and the tank cover 2, and the left and right ends of the tank body 1 and the tank cover 2 are respectively fixedly connected to an outer edge 3, and bolts 4 are threadedly connected to the surface of the outer edge 3.

[0022] In practical implementation, the core components of the transformer, such as the iron core and windings, are installed inside the enclosure 1, and it is completely filled with transformer oil. The enclosure cover 2 is placed on top of the enclosure 1. The second sealing strip 10 is placed between the enclosure 1 and the enclosure cover 2. The second sealing strip 10 can play a sealing role after the enclosure cover 2 and the enclosure 1 are assembled. The left and right ends of the enclosure 1 and the enclosure cover 2 are respectively fixedly connected to the outer edges 3. The outer edges 3 are respectively opened with threaded holes 12. The bolts 4 are threadedly connected to the threaded holes 12 of the outer edges 3 of the enclosure cover 2 and the outer edges 3 of the enclosure 1 from top to bottom. The outer edges 3 and the bolts 4 facilitate the locking of the enclosure 1 and the enclosure cover 2. The bolts 4 not only facilitate the connection between the enclosure cover 2 and the enclosure 1, but also allow the enclosure cover 2 to be tightly fitted to the top of the enclosure 1. The tightly fitted enclosure cover 2 and the enclosure 1 reduce the gap between the enclosure cover 2 and the enclosure 1 by squeezing the second sealing strip 10, so that the second sealing strip 10 can play a sealing role.

[0023] Furthermore, the upper surface of the box body 1 and the lower surface of the box cover 2 are respectively provided with second sealing grooves 11 for placing the second sealing strip 10.

[0024] In practical implementation, the second sealing groove 11 can prevent the second sealing strip 10 from aging and shifting after long-term use, and increase the sealing performance of the second sealing strip 10 on the box cover 2 and the box body 1.

[0025] Furthermore, a square sealing block 8 is fixedly connected to the upper surface of the box body 1, and a first sealing groove 7 that mates with the square sealing block 8 is opened on the lower surface of the box cover 2. The square sealing block 8 is located in the first sealing groove 7, and a first sealing strip 9 is connected between the square sealing block 8 and the first sealing groove 7.

[0026] In specific implementation, the square sealing block 8 is fixedly connected to the upper surface of the housing 1 and is located inside the second sealing groove 11. The square sealing block 8 is higher than the top end face of the housing 1, which plays a role in blocking the transformer oil. At the same time, the top of the square sealing block 8 slides into the first sealing groove 7. The sliding connection between the square sealing block 8 and the first sealing groove 7 further increases the sealing performance of the transformer oil tank. In addition, the first sealing strip 9 set between the square sealing block 8 and the first sealing groove 7 can further increase the sealing effect between the square sealing block 8 and the first sealing groove 7.

[0027] Furthermore, the pre-tightening mechanism 6 includes protrusions 5 fixedly connected to the front and rear ends of the box body 1 and the box cover 2. The protrusions 5 are respectively provided with inclined surfaces on both sides. The upper and lower protrusions 5 on the same side of the box body 1 and the box cover 2 form a pre-tightening block. Clamping mechanisms are slidably connected to both sides of the pre-tightening block. The two clamping mechanisms are connected to each other through a locking mechanism.

[0028] In specific implementation, the protrusion 5 is arranged in a trapezoidal shape. The upper and lower protrusions 5 on the same side of the box body 1 and the box cover 2 are combined to form a complete pre-tightening block. Then, the clamping mechanism tightly clamps the other two protrusions 5 so that the box body 1 and the box cover 2 can fit tightly together. As the box body 1 and the box cover 2 fit tightly together, the sealing performance of the box body 1 and the box cover 2 can be increased. At the same time, the first sealing strip 9 and the second sealing strip 10 can be further squeezed to increase the sealing effect of the first sealing strip 9 and the second sealing strip 10 on the box body 1 and the box cover 2. After the clamping mechanism tightly clamps the pre-tightening block, it is connected by a locking mechanism to prevent the clamping mechanism from shifting outward and causing it to be unable to clamp the pre-tightening block tightly.

[0029] Furthermore, the clamping mechanism includes two clamping blocks 61, each with a clamping groove 62 on one side. The shape of the clamping groove 62 matches the structure of the pre-tightening block. The two clamping blocks 61 are slidably connected to both ends of the pre-tightening block through the clamping groove 62, and the front surfaces of the two clamping blocks 61 are connected by a locking mechanism.

[0030] In practical implementation, the clamping grooves 62 opened on the inner side of the two clamping blocks 61 are consistent with the pre-tightening block. As the two clamping blocks 61 move horizontally towards the trapezoidal pre-tightening block, the inclined surfaces of the clamping grooves 62 and the protrusions 5 are used to make the two protrusions 5 fit tightly together, thereby clamping the two protrusions 5. The outer ends of the two clamping blocks 61 are connected to a locking mechanism. The locking mechanism can lock the horizontal position of the two clamping blocks 61 to prevent the two protrusions 5 from separating due to the outward movement of the two clamping blocks 61 after long-term use.

[0031] Furthermore, the locking mechanism includes a first fixing block 63 and a second fixing block 64. The first fixing block 63 and the second fixing block 64 are respectively fixedly connected to the front end surfaces of the left and right clamping blocks 61. A threaded post 65 is fixedly connected to one side of the first fixing block 63. A through hole is opened on the surface of the second fixing block 64. The other end of the threaded post 65 passes through the through hole of the second fixing block 64 and is threadedly connected to a first nut 66.

[0032] In practical implementation, a threaded post 65 is fixedly connected to one side of the first fixing block 63 fixedly connected to the surface of the left clamping block 61, and a through hole is opened through the second fixing block 64 fixedly connected to the surface of the right clamping block 61. A first nut 66 is threadedly connected to one end of the threaded post 65 through the through hole. The two clamping blocks 61 are fixed in position by the threaded connection between the first nut 66 and the threaded post 65 and the tight fit between one side of the first nut 66 and one side of the second fixing block 64.

[0033] Furthermore, a second nut 67 is threaded onto the surface of the threaded post 65, and the second nut 67 is located on one side of the first nut 66.

[0034] In practical implementation, the left side of the second nut 67 contacts the right side of the first nut 66. The first nut 66 and the second nut 67, which are connected by threads on the surface of the threaded post 65, form a double nut. The double nut configuration effectively prevents the first nut 66 from loosening on the surface of the threaded post 65 due to vibration during the use of the transformer tank, improves the stability of the connection between the threaded post 65 and the first nut 66 and the second nut 67, and thus avoids the gap between the two clamping blocks 61 from increasing due to the loosening of the threaded post 65 and the first nut 66 and the second nut 67, which would prevent the clamping blocks 61 from effectively clamping the two protrusions 5.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A transformer oil tank with good sealing effect, comprising a tank body (1), and a tank cover (2) provided on the top of the tank body (1), characterized in that: The upper surface of the box body (1) and the lower surface of the box cover (2) are in contact with each other. The front and rear ends of the box body (1) and the box cover (2) are respectively connected to a pre-tightening mechanism (6). A second sealing strip (10) is connected between the box body (1) and the box cover (2). The left and right ends of the box body (1) and the box cover (2) are respectively fixedly connected to an outer edge (3). The outer edge (3) is threaded with a bolt (4). The upper surface of the box body (1) and the lower surface of the box cover (2) are respectively provided with a first sealing strip (10) for placing the second sealing strip (10). Two sealing grooves (11); a square sealing block (8) is fixedly connected to the upper surface of the box body (1), and a first sealing groove (7) that mates with the square sealing block (8) is opened on the lower surface of the box cover (2). The square sealing block (8) is located in the first sealing groove (7), and a first sealing strip (9) is connected between the square sealing block (8) and the first sealing groove (7); the pre-tightening mechanism (6) includes a protrusion (5) fixedly connected to the front and rear ends of the box body (1) and the box cover (2), and two sealing grooves are respectively provided on both sides of the protrusion (5). The inclined surface, the upper and lower protrusions (5) on the same side of the box body (1) and the box cover (2) form a pre-tightening block. The two sides of the pre-tightening block are slidably connected to clamping mechanisms, and the two clamping mechanisms are connected by a locking mechanism. The clamping mechanism includes two clamping blocks (61). The two clamping blocks (61) are respectively provided with clamping grooves (62) on one side. The shape of the clamping grooves (62) matches the structure of the pre-tightening block. The two clamping blocks (61) are slidably connected to the two ends of the pre-tightening block through the clamping grooves (62). The front surfaces of the two clamping blocks (61) are connected by a locking mechanism. The locking mechanism includes a first fixing block (63) and a second fixing block (64). The first fixing block (63) and the second fixing block (64) are respectively fixedly connected to the front surfaces of the left and right clamping blocks (61). A threaded post (65) is fixedly connected to one side of the first fixing block (63). A through hole is provided on the surface of the second fixing block (64). The other end of the threaded post (65) passes through the through hole of the second fixing block (64) and is threadedly connected to a first nut (66).

2. The transformer oil tank with good sealing effect according to claim 1, characterized in that: The threaded column (65) has a second nut (67) threaded on its surface, and the second nut (67) is located on the side of the first nut (66).

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