Sealing structure of pulse transformer

Abstract

The utility model discloses a sealing structure of a pulse transformer, which comprises a transformer body, a terminal is arranged in the transformer body, the top of the terminal extends to the upper part of the transformer body, a mounting plate is fixedly arranged on the upper surface of the transformer body and is positioned on the outer side of the terminal, and a rubber tube and a high-voltage bushing are inserted into the top of the terminal. The outer surface of the rubber pipe is sequentially and fixedly sleeved with an inner limiting pipe, a rubber ring, an air bag and an insertion pipe from top to bottom, the rubber ring is composed of two arch-shaped rings, the bottom of the insertion pipe is in a circular truncated cone shape, the air bag and the insertion pipe are both located in the transformer body, and the outer ring face of the rubber ring is attached to the section of an opening of the transformer body. The lower surface of the inner limiting pipe is attached to the upper surface of the transformer body. During use, parts such as bolts are not needed for fixation, mounting is convenient, part oxidation probability is reduced, maintenance and replacement times are reduced, and safety of the pulse transformer is improved.

Description

Technical Field

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

[0002] The so-called pulse transformer is a wide-band transformer. For transformers used in communications, nonlinear distortion is an extremely important indicator. Therefore, the transformer is required to operate at the starting magnetic permeability of the magnetic core. Even a transformer with very small power like the input transformer has to have a very large appearance. As an important equipment in the power system, it needs to be sealed to prevent contaminants from entering the transformer.

[0003] The traditional pulse transformer sealing method is to fill the opening with an oil seal and fix it with bolts and other parts. However, the oil seal and bolts are easily oxidized by air during use, and need to be replaced frequently by staff. Safety accidents are also prone to occur during the replacement process, which is inconvenient for staff to use. Utility Model Content

[0004] The utility model aims to provide a sealing structure for a pulse transformer, which has the advantages of being easy to install and having a long service life, and solves the problem that the existing pulse transformer is sealed by oil seals and bolts, which is not easy to install, is easily oxidized, and is not convenient for staff to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure of a pulse transformer, comprising a transformer body, a terminal is provided inside the transformer body, the top of the terminal extends to the top of the transformer body, a mounting plate is fixedly installed on the upper surface of the transformer body and located outside the terminal, a rubber tube and a high-voltage bushing are inserted into the top of the terminal, an inner limit tube, a rubber ring, an air bag and a plug are fixedly provided on the outer surface of the rubber tube from top to bottom in sequence, the rubber ring is composed of two arched rings, the bottom of the plug is truncated cone-shaped, and the air bag and the plug are both located inside the transformer body.

[0006] Preferably, the outer ring surface of the rubber ring fits with the cross section of the opening of the transformer body, and the lower surface of the inner limit tube fits with the upper surface of the transformer body.

[0007] Preferably, the outer annular surface of the inner limit tube fits with the inner annular surface of the mounting plate, and a mounting groove is provided on the upper surface of the inner limit tube. The inner cavity of the mounting groove is movably connected to the limit plate via a rotating shaft.

[0008] Preferably, a card block is provided on the outer side of the mounting plate, a fixing plate is fixedly installed on one end corresponding to the card block, a spring is fixedly installed on one end corresponding to the fixing plate, a movable plate is fixedly installed on one end corresponding to the spring, and an insert rod is passed through the adjacent end threads on the outer surface of the mounting plate.

[0009] Preferably, the limiting plate is a U-shaped structure that is longer at the top and narrower at the bottom, and the clamping block is located in the groove of the limiting plate.

[0010] Preferably, the corresponding end of the movable plate is an arched protrusion, and the outer surface of the insertion rod is in contact with the protrusion of the movable plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model inserts the rubber tube into the outer surface of the terminal and presses the inner limit tube downward, so that the insertion tube and the air bag are inserted into the shell of the transformer body, so that the rubber ring is squeezed with the cross section of the shell opening of the transformer body, and then the limit plate is rotated and the insertion rod is inserted to make the block protrude, thereby limiting the limit plate. Therefore, the utility model does not need to be fixed with parts such as bolts during use, is easy to install, reduces the probability of parts oxidation, thereby reducing the number of maintenance and replacement times, and improves the safety of the pulse transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the utility model.

[0016] In the figure: 1. high-voltage bushing; 2. terminal; 3. mounting plate; 4. transformer body; 5. fixing plate; 6. clamping block; 7. spring; 8. moving plate; 9. plug rod; 10. inner limit tube; 11. rubber tube; 12. mounting groove; 13. rubber ring; 14. air bag; 15. plug tube; 16. limit plate. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] See also Figure 1-3A sealing structure of a pulse transformer includes a transformer body 4, a terminal 2 is arranged inside the transformer body 4, the top of the terminal 2 extends to the top of the transformer body 4, a mounting plate 3 is fixedly installed on the upper surface of the transformer body 4 and located outside the terminal 2, a rubber tube 11 and a high-voltage bushing 1 are inserted on the top of the terminal 2, and an inner limit tube 10, a rubber ring 13, an air bag 14 and an insertion tube 15 are fixedly arranged on the outer surface of the rubber tube 11 from top to bottom in sequence, the rubber ring 13 is composed of two arched rings, the bottom of the insertion tube 15 is truncated, and the air bag 14 and the insertion tube 15 are both located inside the transformer body 4.

[0019] In this embodiment, the outer ring surface of the rubber ring 13 fits with the cross-section of the opening of the transformer body 4, and the lower surface of the inner limit tube 10 fits with the upper surface of the transformer body 4. The opening of the outer shell of the transformer body 4 can be filled and squeezed through the rubber ring 13, thereby sealing the transformer body 4.

[0020] In this embodiment, the outer ring surface of the inner limit tube 10 fits with the inner ring surface of the mounting disk 3, and a mounting groove 12 is opened on the upper surface of the inner limit tube 10. The inner cavity of the mounting groove 12 is movably connected to the limiting plate 16 through a rotating shaft. A clamping block 6 is arranged on the outer side of the mounting disk 3, and a fixed plate 5 is fixedly installed on the corresponding end of the clamping block 6, and a spring 7 is fixedly installed on the corresponding end of the fixed plate 5, and a movable plate 8 is fixedly installed on the corresponding end of the spring 7. An insert rod 9 is penetrated by the adjacent end thread of the outer surface of the mounting disk 3, and the spring 7 facilitates the movement and resetting of the clamping block 6, which is convenient for the staff to use.

[0021] In this embodiment, the limit plate 16 is a U-shaped structure that is longer at the top and narrower at the bottom. The clamping block 6 is located in the groove of the limit plate 16. By using the limit plate 16 and the clamping block 6 in coordination, the inner limit tube 10 can be limited and fixed, thereby improving the stability of the inner limit tube 10.

[0022] In this embodiment, the corresponding end of the movable plate 8 is an arched protrusion, and the outer surface of the insertion rod 9 contacts the protrusion of the movable plate 8. The insertion rod 9 is used to conveniently control the movement of the card block 6, which is convenient for the staff to install.

[0023] When the sealing structure of the pulse transformer is in use, the rubber tube 11 is inserted into the outer surface of the terminal 2, and the inner limit tube 10 is pressed downward, so that the insertion tube 15 and the air bag 14 are inserted into the shell of the transformer body 4, so that the rubber ring 13 is squeezed with the cross section of the shell opening of the transformer body 4, and then the limit plate 16 is rotated outward, and the insertion rod 9 is inserted to make the block 6 protrude, thereby limiting the limit plate 16, so that the inner limit tube 10 is fixed, and no bolts are needed to fix it, thereby reducing oxidation and rusting of the bolts, and facilitating installation and use by the staff.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sealing structure of a pulse transformer, comprising a transformer body (4), characterized in that: A terminal (2) is provided inside the transformer body (4), the top of the terminal (2) extends to the top of the transformer body (4), a mounting plate (3) is fixedly installed on the upper surface of the transformer body (4) and located outside the terminal (2), a rubber tube (11) and a high-voltage bushing (1) are plugged into the top of the terminal (2), an inner limit tube (10), a rubber ring (13), an air bag (14) and an insertion tube (15) are fixedly sleeved on the outer surface of the rubber tube (11) in sequence from top to bottom, the rubber ring (13) is composed of two arched rings, the bottom of the insertion tube (15) is truncated, and the air bag (14) and the insertion tube (15) are both located inside the transformer body (4).

2. The sealing structure of a pulse transformer according to claim 1, characterized in that: The outer ring surface of the rubber ring (13) fits the cross section of the opening of the transformer body (4), and the lower surface of the inner limit tube (10) fits the upper surface of the transformer body (4).

3. The sealing structure of a pulse transformer according to claim 1, characterized in that: The outer annular surface of the inner limit tube (10) fits with the inner annular surface of the mounting plate (3); a mounting groove (12) is provided on the upper surface of the inner limit tube (10); and the inner cavity of the mounting groove (12) is movably connected to the limit plate (16) via a rotating shaft.

4. The sealing structure of a pulse transformer according to claim 3, characterized in that: A clamping block (6) is provided on the outer side of the mounting plate (3), a fixing plate (5) is fixedly mounted on one end corresponding to the clamping block (6), a spring (7) is fixedly mounted on one end corresponding to the fixing plate (5), a moving plate (8) is fixedly mounted on one end corresponding to the spring (7), and an insert rod (9) is passed through the adjacent end thread of the outer surface of the mounting plate (3).

5. The sealing structure of a pulse transformer according to claim 4, characterized in that: The limiting plate (16) is a U-shaped structure that is long at the top and narrow at the bottom, and the clamping block (6) is located in the groove of the limiting plate (16).

6. The sealing structure of a pulse transformer according to claim 4, characterized in that: The corresponding end of the movable plate (8) is an arched protrusion, and the outer surface of the insertion rod (9) is in contact with the protrusion of the movable plate (8).

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