Outdoor waterproof transformer

Abstract

An outdoor waterproof transformer effectively solves the problem of poor waterproof effect and comprises a transformer box body, a plurality of porcelain sleeves are arranged above the transformer box body and penetrate through the transformer box body to extend outwards, a waterproof assembly is arranged between the transformer box body and the porcelain sleeves, the waterproof assembly comprises a rubber sleeve, and the rubber sleeve is sleeved on the transformer box body. A first limiting ring attached to the inner wall of the transformer box is fixed to the outer edge face of the rubber sleeve, a second limiting ring attached to the outer wall of the transformer box is fixed to the outer edge face of the rubber sleeve, a third limiting ring is fixed to the upper end of the second limiting ring, and an annular groove is formed between the third limiting ring and the rubber sleeve. The rubber sleeve is provided with an external thread located in the annular groove, the external thread is in threaded connection with a fourth limiting ring, the diameter of the outer edge of the fourth limiting ring is sequentially increased from bottom to top, and when the fourth limiting ring spirally moves downwards in the annular groove, the third limiting ring continuously extrudes the fourth limiting ring.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, in particular to an outdoor waterproof transformer. Background Art

[0002] Transformers are basic equipment for power transmission and distribution, and are widely used in industries such as industry, agriculture, transportation, and urban communities. In electrical equipment and wireless circuits, they are usually used to increase or decrease voltage, match impedance, and are relatively important electronic components for electrical equipment. The main components of a transformer are the primary coil, the secondary coil, and the iron core (magnetic core). The transformer has a high-voltage porcelain bushing and a low-voltage porcelain bushing on top, but there is a gap between the connection between the high-voltage porcelain bushing and the low-voltage porcelain bushing and the transformer box. This can easily cause the transformer exposed outdoors to be easily eroded by rainwater, resulting in poor waterproofing, which can damage the internal parts of the transformer and reduce the service life of the equipment. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide an outdoor waterproof transformer, which effectively solves the problem of poor waterproof effect.

[0004] The technical solution to the technical problem is: it includes a transformer box, a plurality of porcelain bushings are arranged above the transformer box, the porcelain bushings extend outward through the transformer box, a waterproof component is arranged between the transformer box and the porcelain bushings, the waterproof component includes a rubber sleeve, a first limiting ring which is in contact with the inner wall of the transformer box is fixed on the outer edge surface of the rubber sleeve, a second limiting ring which is in contact with the outer wall of the transformer box is fixed on the outer edge surface of the rubber sleeve, a third limiting ring is fixed on the upper end of the second limiting ring, an annular groove is arranged between the third limiting ring and the rubber sleeve, an external thread located in the annular groove is arranged on the rubber sleeve, a fourth limiting ring is threadedly connected to the external thread, the outer edge diameter of the fourth limiting ring increases from bottom to top, and when the fourth limiting ring spirally moves downward in the annular groove, the third limiting ring continuously squeezes the fourth limiting ring.

[0005] Preferably, a fifth limiting ring is fixed to the lower end of the second limiting ring, the cross section of the fifth limiting ring is L-shaped, and a limiting groove corresponding to the fifth limiting ring is provided on the transformer box.

[0006] Preferably, a plurality of shifting blocks are fixed on the top of the fourth limiting ring.

[0007] Compared with the traditional equipment, the utility model has the following advantages: 1) under the joint action of the first limiting ring, the second limiting ring and the fifth limiting ring, the first limiting ring is fitted with the inner wall of the transformer box 1, and the second limiting ring is fitted with the outer wall of the transformer box, which effectively ensures the sealing effect between the rubber sleeve and the transformer box, and has a good waterproof effect; 2) the outer edge diameter of the fourth limiting ring increases from bottom to top, and the fourth limiting ring is threadedly connected with the rubber sleeve in the annular groove. In the process of the fourth limiting ring spirally moving downward, the third limiting ring continuously squeezes the fourth limiting ring, and the fourth limiting ring continuously presses the rubber sleeve, so that the rubber sleeve and the porcelain sleeve are more fitted, the sealing is good, and rainwater is prevented from entering between the rubber sleeve and the porcelain sleeve. The threaded connection has self-locking properties, good waterproof effect, safety and stability, and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the front view of the utility model.

[0009] Figure 2 It is a schematic diagram of the connection structure between the transformer box and the porcelain bushing in the utility model.

[0010] Figure 3 yes Figure 2 A is a schematic diagram of a partial enlargement.

[0011] Figure 4 It is the three-dimensional structure of the waterproof component in the utility model Figure 1 Schematic diagram of .

[0012] Figure 5 It is the three-dimensional structure of the waterproof component in the utility model Figure 2 Schematic diagram of .

[0013] Figure numerals: 1. transformer box; 2. porcelain bushing; 3. rubber sleeve; 4. first limiting ring; 5. second limiting ring; 6. third limiting ring; 7. annular groove; 8. external thread; 9. fourth limiting ring; 10. fifth limiting ring; 11. limiting groove; 12. shift block. DETAILED DESCRIPTION

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0015] Depend on Figures 1 to 5A kind of outdoor waterproof transformer is given, including a transformer box 1, a plurality of porcelain bushings 2 are arranged above the transformer box 1, the porcelain bushings 2 extend outward through the transformer box 1, a waterproof component is arranged between the transformer box 1 and the porcelain bushings 2, and the waterproof component includes a rubber sleeve 3, a first limiting ring 4 which is in contact with the inner wall of the transformer box 1 is fixed to the outer edge surface of the rubber sleeve 3, a second limiting ring 5 which is in contact with the outer wall of the transformer box 1 is fixed to the outer edge surface of the rubber sleeve 3, a third limiting ring 6 is fixed to the upper end of the second limiting ring 5, an annular groove 7 is arranged between the third limiting ring 6 and the rubber sleeve 3, an external thread 8 is arranged on the rubber sleeve 3 and is located in the annular groove 7, a fourth limiting ring 9 is threadedly connected to the external thread 8, and the outer edge diameter of the fourth limiting ring 9 increases from bottom to top, and when the fourth limiting ring 9 spirally moves downward in the annular groove 7, the third limiting ring 6 continuously squeezes the fourth limiting ring 9.

[0016] In order to ensure the fitting effect between the first limiting ring 4 and the inner wall of the transformer box 1, and the fitting effect between the second limiting ring 5 and the outer wall of the transformer box 1, a fifth limiting ring 10 is fixed to the lower end of the second limiting ring 5, and the cross-section of the fifth limiting ring 10 is L-shaped, and a limiting groove 11 corresponding to the fifth limiting ring 10 is provided on the transformer box 1.

[0017] In order to facilitate the rotation of the fourth limiting ring 9 , a plurality of shifting blocks 12 are fixed on the top of the fourth limiting ring 9 .

[0018] When the utility model is in use, the first limiting ring 4, the second limiting ring 5, the third limiting ring 6, the fourth limiting ring 9 and the fifth limiting ring 10 are all made of rubber. First, the rubber sleeve 3 is installed in the transformer box 1, so that the first limiting ring 4 fits the inner wall of the transformer box 1, the second limiting ring 5 fits the outer wall of the transformer box 1, the rubber sleeve 3 fits the transformer box 1, and the cross section of the fifth limiting ring 10 is L-shaped. The fifth limiting ring 10 is clamped with the limiting groove 11, which has a good locking effect. Under the limiting effect of the fifth limiting ring 10, the fitting effect of the first limiting ring 4 and the inner wall of the transformer box 1 and the fitting effect of the second limiting ring 5 and the outer wall of the transformer box 1 can be better guaranteed, and the external rainwater can be effectively prevented from entering the gap between the rubber sleeve 3 and the transformer box 1, ensuring the waterproof effect of the transformer box 1, and then the porcelain bushing 2 is passed through the fourth limiting ring 9, the rubber The sleeve 3 enters the interior of the transformer box 1, the rubber sleeve 3 wraps the outer surface of the porcelain sleeve 2, has good stability, and has a sealing effect. The shift block 12 is rotated, and the shift block 12 drives the fourth limit ring 9 to rotate. The rubber sleeve 3 is provided with an external thread 8, and the fourth limit ring 9 is threadedly connected to the rubber sleeve 3. The fourth limit ring 9 spirals downward in the annular groove 7, and the outer edge diameter of the fourth limit ring 9 increases from bottom to top. In the process of the fourth limit ring 9 spiraling downward in the annular groove 7, the third limit ring 6 continuously squeezes the fourth limit ring 9, and the fourth limit ring 9 continuously squeezes the rubber sleeve 3, so that the rubber sleeve 3 continuously fits the porcelain sleeve 2, further ensuring the sealing between the rubber sleeve 3 and the porcelain sleeve 2, and achieving the best sealing effect. The threaded connection is self-locking, which effectively prevents external rainwater from entering between the rubber sleeve 3 and the porcelain sleeve 2, has good waterproof effect, and is safe and stable.

Claims

1. An outdoor waterproof transformer, comprising a transformer box (1), a plurality of porcelain bushings (2) are arranged above the transformer box (1), the porcelain bushings (2) pass through the transformer box (1) and extend outward, and a waterproof component is arranged between the transformer box (1) and the porcelain bushings (2), characterized in that: The waterproof component comprises a rubber sleeve (3), a first limiting ring (4) which is in contact with the inner wall of the transformer box (1) is fixed on the outer edge surface of the rubber sleeve (3), a second limiting ring (5) which is in contact with the outer wall of the transformer box (1) is fixed on the outer edge surface of the rubber sleeve (3), a third limiting ring (6) is fixed on the upper end of the second limiting ring (5), an annular groove (7) is provided between the third limiting ring (6) and the rubber sleeve (3), an external thread (8) which is located in the annular groove (7) is provided on the rubber sleeve (3), a fourth limiting ring (9) is threadedly connected to the external thread (8), the outer edge diameter of the fourth limiting ring (9) increases from bottom to top, and when the fourth limiting ring (9) moves downward in the annular groove (7), the third limiting ring (6) continuously squeezes the fourth limiting ring (9).

2. An outdoor waterproof transformer according to claim 1, characterized in that: A fifth limiting ring (10) is fixed to the lower end of the second limiting ring (5); the cross section of the fifth limiting ring (10) is L-shaped; and a limiting groove (11) corresponding to the fifth limiting ring (10) is provided on the transformer box (1).

3. An outdoor waterproof transformer according to claim 1, characterized in that: A plurality of shifting blocks (12) are fixed on the top of the fourth limiting ring (9).

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