Transformer with good sealing structure

Abstract

The utility model belongs to the technical field of transformers, and discloses a transformer with a good sealing structure, which comprises a box body, a first-stage sealing groove arranged on the inner wall of the box body, a first-stage sealing ring embedded in the first-stage sealing groove, a sealing plate arranged in the box body, a second-stage sealing groove arranged on the top end of the box body, and a second-stage sealing ring embedded in the second-stage sealing groove. A second-stage sealing ring is embedded in the second-stage sealing groove, a cover plate is fixedly installed at the top end of the box body, a plurality of downward pressing mechanisms are arranged at the top end of the sealing plate, each downward pressing mechanism comprises a positioning rod, a first spring and a blocking piece, and the bottom end of each positioning rod is fixedly connected with the top end of the sealing plate. Through the design of the downward pressing mechanism, pressure is continuously applied to the sealing plate through the first spring of the downward pressing mechanism, so that sealing between the sealing plate and the interior of the box body is guaranteed, main internal sealing work is formed, sealing of the whole transformer is achieved in cooperation with sealing of the external cover plate, and the sealing effect of the transformer is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, in particular to a transformer with a good sealing structure. Background Art

[0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is mainly composed of iron core, winding, oil tank, oil pillow, insulating bushing, tap changer and gas relay. In electrical equipment and wireless circuits, it is often used for voltage increase and decrease, impedance matching, safety isolation, etc.

[0003] According to the authorized patent, which has the patent number CN220585026U, through the coordinated design, when the insulator of the transformer body of this scheme is disassembled and replaced, there is no need to disassemble the top of the transformer body as a whole. Through the coordinated disassembly design of the sealing seat, the connector and the limiter, the convenience of disassembly of the insulator is improved to meet the use requirements, and the problem of the contact between the internal oil and the air affecting the use effect when the top of the transformer body is disassembled as a whole is reduced. Through the coordinated design of the limiter, the sealing connection of the insulator on the top of the transformer body can be improved to avoid the loosening of the fastened connector.

[0004] The above patent takes into account the assembly design of the external insulator. Through the disassembly design of multiple components, the original transformer is not modified. There is still a high risk of sealing leakage at the locations of the external connectors and internal connectors of the transformer. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a transformer with a good sealing structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transformer with a good sealing structure, comprising a box body, an inner wall of the box body is provided with a primary sealing groove, a primary sealing ring is embedded in the interior of the primary sealing groove, a sealing plate is arranged inside the box body, a secondary sealing groove is provided at the top of the box body, a secondary sealing ring is embedded in the interior of the secondary sealing groove, a cover plate is fixedly installed at the top of the box body, a plurality of pressing mechanisms are arranged at the top of the sealing plate, the pressing mechanism comprises a positioning rod, a No. 1 spring and a baffle, the bottom end of the positioning rod is fixedly connected to the top end of the sealing plate, the No. 1 spring is sleeved on the outer side of the positioning rod, the top of the positioning rod is slidably sleeved with a baffle, a lower terminal is arranged at the top of the sealing plate, the top end of the lower terminal is slidably sleeved with a conductive sliding sleeve, an upper terminal is fixedly installed at the top of the cover plate, the bottom end of the upper terminal passes through the cover plate and is fixedly connected with a conductive block, and the outer side of the lower terminal is sleeved with a No. 2 spring.

[0007] Preferably, the bottom end of the No. 1 spring contacts the top end of the sealing plate, and the top end of the No. 1 spring contacts the bottom end of the baffle.

[0008] Preferably, a plurality of positioning grooves corresponding to the positions of the positioning rods are formed at the bottom end of the cover plate, the top of the positioning rods is plugged into the inside of the positioning grooves, and the bottom end of the cover plate is in contact with the top end of the baffle.

[0009] Preferably, an insulating block is fixedly sleeved on the outer side of the lower terminal, and the insulating block penetrates the sealing plate and is fixedly connected to the sealing plate.

[0010] Preferably, the top end of the conductive block is fixedly mounted to the bottom end of the cover plate, and the bottom end of the conductive block is in contact with the top end of the conductive sleeve.

[0011] Preferably, a plurality of guide rods are fixedly connected to the top of the insulating block, and the tops of the guide rods are slidably and interlacedly connected with the inside of the conductive sleeve.

[0012] Preferably, a plurality of annular grooves are formed inside the cover plate, and a plurality of sealing rings are fixedly sleeved on the bottom of the upper terminal, and the sealing rings are embedded in the annular grooves.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model adopts the design of the pressing mechanism, compared with the traditional bolt fixing, and continuously applies pressure to the sealing plate through the No. 1 spring of the pressing mechanism, thereby ensuring the sealing between the sealing plate and the inside of the box body, forming the main internal sealing work, and through the conductive sliding sleeve arranged between the upper terminal and the lower terminal, the external upper terminal and the internal lower terminal ensure normal circuit connection, and combined with the sealing of the external cover plate, the overall sealing of the transformer is achieved, and the sealing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the positioning rod of the utility model;

[0019] Figure 5 It is a partial cross-sectional structural diagram of the lower terminal position of the utility model;

[0020] Figure 6 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0021] In the figure: 1. Box body; 2. Primary sealing ring; 3. Sealing plate; 4. Secondary sealing groove; 5. Secondary sealing ring; 6. Cover plate; 7. Positioning rod; 8. No. 1 spring; 9. Baffle; 10. Lower terminal; 11. Conductive sleeve; 12. Upper terminal; 13. Conductive block; 14. Insulating block; 15. No. 2 spring; 16. Guide rod; 17. Sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 6 As shown, the utility model provides a transformer with a good sealing structure, including a box body 1, the inner wall of the box body 1 is provided with a primary sealing groove, the primary sealing groove is a square ring structure, a primary sealing ring 2 is embedded in the primary sealing groove, a sealing plate 3 is arranged inside the box body 1, the sealing plate 3 is sealed with the box body 1 through the primary sealing ring 2, a secondary sealing groove 4 is provided at the top of the box body 1, the secondary sealing groove 4 is a square ring structure, a secondary sealing ring 5 is embedded in the secondary sealing groove 4, a cover plate 6 is fixedly installed at the top of the box body 1, the cover plate 6 is a non-conductive material, and the cross-sectional structure of the cover plate 6 is as shown Figure 4 The top of the sealing plate 3 is provided with a plurality of pressing mechanisms, the pressing mechanisms comprising a positioning rod 7, a No. 1 spring 8 and a baffle 9, the bottom end of the positioning rod 7 is fixedly connected to the top of the sealing plate 3, the No. 1 spring 8 is sleeved on the outside of the positioning rod 7, the top of the positioning rod 7 is slidably sleeved with a baffle 9, the top of the sealing plate 3 is provided with a lower terminal 10, the top of the lower terminal 10 is slidably sleeved with a conductive sleeve 11, the top of the cover plate 6 is fixedly installed with an upper terminal 12, the bottom end of the upper terminal 12 penetrates the cover plate 6 and is fixedly connected with a conductive block 13, the outer side of the lower terminal 10 is sleeved with a No. 2 spring 15, when the cover plate 6 is installed, the conductive sleeve 11 is in a state of being pressed by the conductive block 13 Figure 5 In the middle position, the No. 2 spring 15 is compressed, and the conductive sleeve 11 is always in contact with the conductive block 13 due to the elastic effect of the No. 2 spring 15, thereby realizing the conductive function.

[0024] When the bottom end of the cover plate 6 contacts the top end of the box body 1 , the bottom end of the No. 1 spring 8 contacts the top end of the sealing plate 3 , and the top end of the No. 1 spring 8 contacts the bottom end of the baffle 9 .

[0025] The bottom end of the cover plate 6 is provided with a plurality of positioning grooves corresponding to the positions of the positioning rods 7 , the tops of the positioning rods 7 are plugged into the insides of the positioning grooves, and the bottom end of the cover plate 6 is in contact with the top end of the blocking sheet 9 .

[0026] An insulating block 14 is fixedly sleeved on the outer side of the lower terminal 10 . The insulating block 14 penetrates the sealing plate 3 and is fixedly connected to the sealing plate 3 . The insulating block 14 is used to achieve insulation between the lower terminal 10 and the sealing plate 3 .

[0027] The top end of the conductive block 13 is fixedly mounted to the bottom end of the cover plate 6 , and the bottom end of the conductive block 13 is in contact with the top end of the conductive sleeve 11 .

[0028] A plurality of guide rods 16 are fixedly connected to the top of the insulating block 14 , and the tops of the guide rods 16 are slidably and interlacedly connected with the inside of the conductive sleeve 11 .

[0029] The cover plate 6 is provided with a plurality of annular grooves therein, and the bottom of the upper terminal 12 is fixedly sleeved with a plurality of sealing rings 17 , which are embedded in the annular grooves. The sealing rings 17 and the secondary sealing ring 5 are used to achieve sealing between the cover plate 6 and the box body 1 .

[0030] The working principle and process of the utility model are as follows: when installing, the operator first places the primary sealing ring 2 inside the primary sealing groove, and then places the sealing plate 3 inside the box body 1 until Figure 2 The operator places the conductive sleeve 11 on the top of the lower terminal 10 and aligns it with the guide rod 16.

[0031] The operator places the secondary sealing ring 5 inside the secondary sealing groove 4, the operator aligns the positioning groove at the bottom end of the cover plate 6 with the position of the positioning rod 7, and the operator slowly lowers the cover plate 6 until the bottom end of the cover plate 6 fits with the top end of the box body 1. At the same time, the positioning rod 7 gradually enters the interior of the positioning groove, and the bottom end of the cover plate 6 begins to contact the top end of the baffle 9, and presses the baffle 9 and the No. 1 spring 8 downward. The No. 1 spring 8 is compressed, so that the No. 1 spring 8 applies pressure to the top end of the sealing plate 3. With the use of the primary sealing ring 2, the sealing plate 3 and the inner wall of the box body 1 fit more closely, thereby achieving a seal between the sealing plate 3 and the interior of the box body 1.

[0032] When the cover plate 6 is fitted with the box body 1 , the operator fixes the box body 1 and the cover plate 6 with bolts to achieve sealing between the cover plate 6 and the box body 1 .

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer with a good sealing structure, characterized in that: The invention comprises a box body (1), wherein the inner wall of the box body (1) is provided with a primary sealing groove, wherein a primary sealing ring (2) is embedded in the first sealing groove, wherein a sealing plate (3) is arranged inside the box body (1), wherein a secondary sealing groove (4) is provided at the top end of the box body (1), wherein a secondary sealing ring (5) is embedded in the second sealing groove (4), wherein a cover plate (6) is fixedly mounted at the top end of the box body (1), wherein a plurality of pressing mechanisms are arranged at the top end of the sealing plate (3), wherein the pressing mechanisms comprise a positioning rod (7), a No. 1 spring (8) and a baffle (9), wherein the positioning rod (7) The bottom end is fixedly connected to the top end of the sealing plate (3), the first spring (8) is sleeved on the outer side of the positioning rod (7), the top of the positioning rod (7) is slidably sleeved with a baffle (9), the top of the sealing plate (3) is provided with a lower terminal (10), the top of the lower terminal (10) is slidably sleeved with a conductive sleeve (11), the top of the cover plate (6) is fixedly installed with an upper terminal (12), the bottom end of the upper terminal (12) passes through the cover plate (6) and is fixedly connected with a conductive block (13), and the outer side of the lower terminal (10) is sleeved with a second spring (15).

2. A transformer with a good sealing structure according to claim 1, characterized in that: The bottom end of the No. 1 spring (8) contacts the top end of the sealing plate (3), and the top end of the No. 1 spring (8) contacts the bottom end of the blocking plate (9).

3. The transformer with good sealing structure according to claim 1, characterized in that: The bottom end of the cover plate (6) is provided with a plurality of positioning grooves corresponding to the positions of the positioning rods (7), the top of the positioning rods (7) is plugged into the inside of the positioning grooves, and the bottom end of the cover plate (6) is in contact with the top end of the baffle (9).

4. The transformer with good sealing structure according to claim 1, characterized in that: An insulating block (14) is fixedly sleeved on the outer side of the lower terminal post (10); the insulating block (14) penetrates the sealing plate (3) and is fixedly connected to the sealing plate (3).

5. The transformer with good sealing structure according to claim 1, characterized in that: The top end of the conductive block (13) is fixedly mounted on the bottom end of the cover plate (6), and the bottom end of the conductive block (13) is in contact with the top end of the conductive sleeve (11).

6. The transformer with good sealing structure according to claim 4, characterized in that: A plurality of guide rods (16) are fixedly connected to the top of the insulating block (14), and the tops of the guide rods (16) are slidably interlaced with the interior of the conductive sliding sleeve (11).

7. The transformer with good sealing structure according to claim 1, characterized in that: The cover plate (6) is provided with a plurality of annular grooves inside, and the bottom of the upper terminal (12) is fixedly sleeved with a plurality of sealing rings (17), and the sealing rings (17) are embedded inside the annular grooves.

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