Oil-immersed leakproof power transformer

Abstract

The utility model discloses an oil-immersed leakproof power transformer which comprises a transformer body and two flow guide pipes, the two flow guide pipes are respectively communicated and fixedly arranged at the top and the bottom of the front side of the transformer body through flanges and bolts, the tops of the flow guide pipes are fixedly connected with a mounting box, and the mounting box is fixedly connected with the transformer body. The utility model relates to the technical field of power transformers. According to the oil-immersed anti-leakage power transformer, the sealing anti-leakage mechanism is arranged between the transformer body and the rotating rod, so that when the valve plate in the flow guide pipe is closed through the rotating rod, the sealing opening in the transformer body can be subjected to double sealing synchronously through the sealing anti-leakage mechanism; the problems that the connecting position of the flow guide pipe and the transformer body flange is rusted and oil leakage is prone to occurring after the valve plate is abraded are solved, and the polygonal groove and the polygonal plug pin are arranged between the threaded rod and the rotating rod, so that separation and replacement of the flow guide pipe are further facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of power transformers, in particular to an oil-immersed leakage-proof power transformer. Background Art

[0002] A power transformer is a static electrical device that is used to convert a certain value of AC voltage (current) into another or several different values ​​of voltage (current) with the same frequency. In the prior art, most power transformers use transformer oil as a cooling and insulating medium.

[0003] In order to facilitate the replacement of cooling oil, a valve is usually set on the surface of the transformer. Although the transformer is convenient for oil transmission and replacement through the valve, it is inevitable that there are still some shortcomings in the actual use process. For example, there is a lack of a leak-proof mechanism between the transformer and the valve, so that the valve flange connection is rusted and the valve plate is worn, which leads to the problem of transformer oil leakage. In order to avoid such problems, an oil-immersed leak-proof power transformer is proposed to solve the existing problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an oil-immersed leakage-proof power transformer, which solves the problem that the lack of a leakage-proof mechanism between the transformer and the valve causes the valve flange connection and the valve plate to wear, resulting in easy leakage of transformer oil.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an oil-immersed anti-leakage power transformer, comprising a transformer body and a guide tube, wherein two guide tubes are provided, and the two guide tubes are respectively connected and fixedly provided at the top and bottom of the front side of the transformer body through flanges and bolts, the top of the guide tube is fixedly connected with a mounting box, the bottom of the inner cavity of the mounting box is rotatably connected with a valve handle through a bearing, and one end of the valve handle extends to the inside of the guide tube, and the end of the valve handle extending to the inside of the guide tube is fixedly connected with a valve plate, the front side of the mounting box is rotatably connected with a rotating rod through a bearing, and one end of the rotating rod extends to the rear side of the mounting box, the surface of the rotating rod and the top of the valve handle are fixedly connected with bevel gears, and the two bevel gears are meshed with each other, and a sealing and anti-leakage mechanism is provided between the rotating rod and the transformer body.

[0006] Preferably, the sealing and leak-proof mechanism includes a threaded rod, two of which are provided, and the two threaded rods are rotatably arranged at the top and bottom of the front side of the transformer body through bearings, a polygonal groove is provided on the front side of the threaded rod, a polygonal pin matched with the polygonal groove is fixedly connected to the rear end of the rotating rod, one end of the threaded rod extends to the interior of the transformer body, a threaded sleeve is threadedly connected to the surface of the threaded rod, a sealing port is provided on the front side of the inner cavity of the transformer body and at the bottom of the threaded rod, and a sealing plate matched with the sealing port is fixedly connected to the bottom of the threaded sleeve.

[0007] Preferably, a sliding rod is fixedly connected to the front side of the inner cavity of the transformer body and located at the top of the threaded rod, a sliding sleeve is slidably connected to the surface of the sliding rod, and the bottom of the sliding sleeve is fixedly connected to the top of the threaded sleeve.

[0008] Preferably, a rubber pad is fixedly provided on the front side of the sealing plate.

[0009] Preferably, a plurality of heat dissipation fins are installed on the outer surface of the transformer body.

[0010] Preferably, mounting frames are fixedly provided on both sides of the bottom of the transformer body. Beneficial Effects

[0011] The utility model provides an oil-immersed anti-leakage power transformer. Compared with the existing technology, the utility model has the following beneficial effects: by arranging a sealing and anti-leakage mechanism between the transformer body and the rotating rod, when the valve plate in the flow guide tube is closed by the rotating rod, the sealing and anti-leakage mechanism can be used to synchronously double-seal the sealing port inside the transformer body, thereby avoiding the problem of oil leakage caused by rust at the connection between the flow guide tube and the transformer body flange and wear of the valve plate, and by arranging a polygonal groove and a polygonal latch between the threaded rod and the rotating rod, the separation and replacement of the flow guide tube is further facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0013] Figure 2 It is a side view of the internal structure of the flow guide pipe of the utility model;

[0014] Figure 3 It is a side view of the flow guide pipe structure of the utility model.

[0015] In the figure: 1. transformer body; 2. flow guide tube; 3. installation box; 4. valve handle; 5. rotating rod; 6. bevel gear; 7. valve plate; 8. sealing and leak-proof mechanism; 9. threaded rod; 10. polygonal groove; 11. polygonal latch; 12. threaded sleeve; 13. sealing port; 14. sealing plate; 15. sliding rod; 16. sliding sleeve; 17. rubber pad; 18. heat sink fin; 19. installation frame. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] See also Figure 1-3 The utility model provides a technical solution: an oil-immersed anti-leakage power transformer, comprising a transformer body 1 and a flow guide pipe 2, two flow guide pipes 2 are provided, and the two flow guide pipes 2 are respectively connected and fixedly arranged at the top and bottom of the front side of the transformer body 1 through flanges and bolts, the top of the flow guide pipe 2 is fixedly connected with a mounting box 3, the bottom of the inner cavity of the mounting box 3 is rotatably connected with a valve handle 4 through a bearing, and one end of the valve handle 4 extends to the inside of the flow guide pipe 2, and one end of the valve handle 4 extending to the inside of the flow guide pipe 2 is fixedly connected with a valve plate 7, a plurality of heat dissipation fins 18 are installed on the outer surface of the transformer body 1, and mounting frames 19 are fixedly arranged on both sides of the bottom of the transformer body 1.

[0018] Furthermore, in order to facilitate the sealing and leakage prevention of the transformer body 1, a rotating rod 5 is rotatably connected to the front side of the installation box 3 through a bearing, and one end of the rotating rod 5 extends to the rear side of the installation box 3, and the surface of the rotating rod 5 and the top of the valve handle 4 are fixedly connected with a bevel gear 6, and the two bevel gears 6 are meshed with each other. A sealing and leakage prevention mechanism 8 is arranged between the rotating rod 5 and the transformer body 1, and the sealing and leakage prevention mechanism 8 includes a threaded rod 9, and two threaded rods 9 are arranged, and the two threaded rods 9 are rotatably arranged at the top and bottom of the front side of the transformer body 1 through bearings, respectively. A polygonal groove 10 is opened on the front side of the threaded rod 9, and a polygonal pin 11 used in conjunction with the polygonal groove 10 is fixedly connected to the rear end of the rotating rod 5, one end of the threaded rod 9 extends to the interior of the transformer body 1, and a threaded sleeve 12 is threadedly connected to the surface of the threaded rod 9, and a sealing port 13 is opened on the front side of the inner cavity of the transformer body 1 and at the bottom of the threaded rod 9, and a sealing plate 14 used in conjunction with the sealing port 13 is fixedly connected to the bottom of the threaded sleeve 12, and a rubber pad 17 is fixedly arranged on the front side of the sealing plate 14.

[0019] As a detailed description: a slide rod 15 is fixedly connected to the front side of the inner cavity of the transformer body 1 and located at the top of the threaded rod 9 , a sliding sleeve 16 is slidably connected to the surface of the slide rod 15 , and the bottom of the sliding sleeve 16 is fixedly connected to the top of the threaded sleeve 12 .

[0020] When the valve plate 7 needs to be closed, the rotating rod 5 is rotated, and the rotating rod 5 drives the bevel gear 6 to rotate, and the engagement of the two bevel gears 6 drives the valve handle 4 to rotate. The rotation of the valve handle 4 drives the valve plate 7 to be closed. During the rotation of the rotating rod 5, the polygonal pin 11 is rotated synchronously. The polygonal pin 11 drives the threaded rod 9 to rotate by cooperating with the polygonal groove 10. The threaded rod 9 rotates, and the threaded sleeve 12 on the surface of the threaded rod 9 will carry the sealing plate 14 to the inside of the sealing port 13 for airtight fit. When the valve plate 7 is screwed closed, the corresponding sealing plate 14 is completely airtightly fitted with the sealing port 13.

Claims

1. An oil-immersed leakage-proof power transformer, comprising a transformer body (1) and a flow guide tube (2), wherein two flow guide tubes (2) are provided, and the two flow guide tubes (2) are connected and fixedly provided at the top and bottom of the front side of the transformer body (1) respectively through flanges and bolts, characterized in that: The top of the flow guide tube (2) is fixedly connected to a mounting box (3); the bottom of the inner cavity of the mounting box (3) is rotatably connected to a valve handle (4) via a bearing, and one end of the valve handle (4) extends into the interior of the flow guide tube (2); the end of the valve handle (4) extending into the interior of the flow guide tube (2) is fixedly connected to a valve plate (7); the front side of the mounting box (3) is rotatably connected to a rotating rod (5) via a bearing, and one end of the rotating rod (5) extends to the rear side of the mounting box (3); the surface of the rotating rod (5) and the top of the valve handle (4) are fixedly connected to a bevel gear (6), and the two bevel gears (6) are meshed with each other; a sealing and leak-proof mechanism (8) is provided between the rotating rod (5) and the transformer body (1).

2. The oil-immersed anti-leakage power transformer according to claim 1, characterized in that: The sealing and leak-proof mechanism (8) comprises a threaded rod (9), wherein two threaded rods (9) are provided, and the two threaded rods (9) are rotatably arranged at the top and bottom of the front side of the transformer body (1) through bearings, respectively; a polygonal groove (10) is provided at the front side of the threaded rod (9); a polygonal latch (11) matched with the polygonal groove (10) is fixedly connected to the rear end of the rotating rod (5); one end of the threaded rod (9) extends into the interior of the transformer body (1); a threaded sleeve (12) is threadedly connected to the surface of the threaded rod (9); a sealing opening (13) is provided at the front side of the inner cavity of the transformer body (1) and located at the bottom of the threaded rod (9); a sealing plate (14) matched with the sealing opening (13) is fixedly connected to the bottom of the threaded sleeve (12).

3. The oil-immersed anti-leakage power transformer according to claim 2, characterized in that: A sliding rod (15) is fixedly connected to the front side of the inner cavity of the transformer body (1) and located at the top of the threaded rod (9); a sliding sleeve (16) is slidably connected to the surface of the sliding rod (15); and the bottom of the sliding sleeve (16) is fixedly connected to the top of the threaded sleeve (12).

4. The oil-immersed anti-leakage power transformer according to claim 2, characterized in that: A rubber pad (17) is fixedly provided on the front side of the sealing plate (14).

5. The oil-immersed anti-leakage power transformer according to claim 1, characterized in that: A plurality of heat dissipation fins (18) are installed on the outer surface of the transformer body (1).

6. The oil-immersed anti-leakage power transformer according to claim 1, characterized in that: Mounting frames (19) are fixedly arranged on both sides of the bottom of the transformer body (1).

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