Capacitor oil tank with oil filling port tin leakage prevention structure
By designing leakage-proof sten plugs on the oil injection port of the capacitor oil tank, including the inner plug ring and the outer cover plate, and setting exhaust holes on the outer cover plate, the problem of solder entering the oil tank is solved, achieving higher sealing quality and product qualification rate.
Patent Information
- Application Number
- CN202420158544.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-01-23
AI Technical Summary
When the existing capacitor oil tank body is sealed with solder, the solder can easily enter the oil tank through the gap between the sealing cover and the oil injection port, resulting in ground breakdown during factory tests, affecting product quality and pass rate.
A capacitor oil tank with an oil injection port leakage-proof structure is designed. By setting a leak-proof tin plug on the oil injection port, including an inner plug ring and an outer cover plate, an exhaust hole is provided on the outer cover plate to form a cavity surrounded by the sealing cover, an outer cover plate, an oil injection port and solder to ensure that the solder is sealed and the pressure is stabilized.
It effectively avoids solder entering the capacitor oil tank body, ensures that the oil tank is full of oil, improves the sealing quality of the solder seal, and improves product quality and the passing rate of factory tests.
Smart Images
Figure CN222653789U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of capacitor oil tank bodies, in particular to a capacitor oil tank with an oil filling port anti-leaking tin structure. Background Art
[0002] The capacitor oil tank is used to store oil and also plays the role of heat dissipation and separation of bubbles and impurities contained in the oil. Figure 1 As shown, the existing capacitor oil tank body oil filling port directly adopts a sealing cover soldering sealing structure. When the sealing is performed by soldering or when the oil tank welding defect leaks oil and the oil filling port needs to be opened to add oil, the solder can easily enter the oil tank through the gap between the sealing cover and the oil filling port of the oil tank, resulting in ground breakdown during subsequent factory tests, seriously affecting product quality and the pass rate of factory tests. Utility Model Content
[0003] In view of this, the utility model provides a capacitor oil tank with an oil filling port anti-leaking tin structure to solve the problem of solder entering into the capacitor oil tank body when the solder seal between the sealing cover and the oil filling port is formed.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A capacitor oil tank with an oil filling port anti-leaking tin structure comprises a capacitor oil tank body and a sealing cover, wherein the capacitor oil tank body has an oil filling port extending upward, the capacitor oil tank body is provided with a sealing ring groove extending downward around the oil filling port, the sealing cover is arranged on the outer side of the oil filling port, and the bottom end of the sealing cover is placed in the sealing ring groove, a tin solder for sealing the gap between the sealing ring groove and the bottom end of the sealing cover is provided in the sealing ring groove, and the oil filling port plug is provided with an anti-leaking tin plug.
[0006] To better implement the above technical solution, optionally, the leak-proof tin plug includes an inner plug ring tightly attached to the inner ring wall of the oil filling port and an outer cover plate tightly attached to the top surface of the oil filling port, and the inner plug ring and the outer cover plate are an integral structure with a T-shaped vertical section.
[0007] Optionally, exhaust holes are evenly distributed in the middle of the outer cover plate.
[0008] Optionally, the diameter of the exhaust hole is less than 1 mm.
[0009] Optionally, the anti-leakage tin plug is made of a thin spring steel sheet.
[0010] Optionally, a cavity is provided between the inner top surface of the sealing cover and the outer cover plate.
[0011] Optionally, there is a gap between the inner annular surface of the sealing cover and the outer annular surface of the oil filling port.
[0012] Beneficial effects of the utility model:
[0013] The utility model discloses a capacitor oil tank with an oil filling port tin leakage prevention structure. The inner ring wall of the oil filling port is sealed by an inner plug ring, and the top end of the oil filling port is sealed by an outer cover plate. The solder can be prevented from entering the capacitor oil tank body through the gap between the bottom end of the sealing cover and the outer ring side of the oil filling port and then through the oil filling port during soldering. The exhaust hole is arranged on the outer cover plate, so that part of the oil and gas generated in the capacitor oil tank body can enter the cavity surrounded by the inner top surface of the sealing cover, the outer cover plate, the oil filling port and the solder, so as to play a role in stabilizing pressure and ensure that the oil tank is in a full oil state when the solder is sealed. Finally, the product quality can be effectively improved and the qualified rate of the product factory test is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the sealing structure of the oil filling port of the capacitor oil tank body in the prior art;
[0015] Figure 2 It is a schematic diagram of a capacitor oil tank with an oil filling port anti-leaking tin structure according to an embodiment of the utility model;
[0016] Reference numerals:
[0017] Oil filling port 1, soldering 2, sealing cover 3, inner plug ring 41, outer cover plate 42, exhaust hole 43, cavity 5. DETAILED DESCRIPTION
[0018] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the same components are represented by the same reference numerals.
[0019] See also Figure 2 The utility model embodiment discloses a capacitor oil tank with an oil filling port anti-leaking tin structure, comprising a capacitor oil tank body, a sealing cover 3 and an anti-leaking tin plug.
[0020] The capacitor oil tank body has an oil filling port 1 extending upward, the oil filling port 1 is a round hole or a square hole, a leak-proof tin plug is arranged on the oil filling port 1, the capacitor oil tank body is provided with a sealing ring groove extending downward around the oil filling port 1, a sealing cover 3 is arranged on the outer side of the oil filling port 1, and the bottom end of the sealing cover 3 is placed in the sealing ring groove, and a tin solder 2 for sealing the gap between the sealing ring groove and the bottom end of the sealing cover 3 is provided in the sealing ring groove.
[0021] The utility model discloses a capacitor oil tank with an oil filling port anti-leaking tin structure. By arranging an anti-leaking tin plug on the oil filling port 1, it is possible to prevent the solder from entering the oil tank through the gap between the sealing cover 3 and the oil filling port 1 when the oil filling port needs to be opened for oil replenishment due to oil leakage caused by welding defects in the oil tank during soldering sealing, thereby effectively improving the qualified rate of the capacitor oil tank body before leaving the factory.
[0022] In an optional embodiment of the utility model, the leak-proof tin plug includes an inner plug ring 41 tightly attached to the inner ring wall of the oil filling port 1 and an outer cover plate 42 tightly attached to the top end surface of the oil filling port 1, the inner plug ring 41 and the outer cover plate 42 are an integral structure with a T-shaped vertical cross-section. Specifically, the leak-proof tin plug is stamped from a thin spring steel sheet, and exhaust holes 43 are evenly distributed in the middle of the outer cover plate 42. The aperture of a single exhaust hole 43 is less than 1 mm, and multiple exhaust holes 43 are distributed in a ring shape. A cavity 5 is provided between the inner top surface of the sealing cover 3 and the outer cover plate 42. After the exhaust hole 43 is set, when the oil tank is full of oil, the exhaust hole 43 has a voltage stabilizing effect, and the aperture of the exhaust hole 43 is less than 1 mm, which can prevent solder from entering the capacitor oil tank body through the exhaust hole 43.
[0023] In an optional embodiment of the present invention, a gap is provided between the inner annular surface of the sealing cover 3 and the outer annular surface of the oil filling port 1 , and the bottom of the gap can be filled and welded, which helps to improve the sealing quality of soldering.
[0024] The utility model discloses a capacitor oil tank with an oil filling port tin leakage prevention structure. The inner ring wall of the oil filling port 1 is blocked by an inner plug ring 41, and the top end of the oil filling port 1 is blocked by an outer cover plate 42. This can prevent the solder from passing through a gap between the bottom end of a sealing cover 3 and the outer ring side of the oil filling port 1 and then entering the capacitor oil tank body through the oil filling port 1 during soldering. By arranging an exhaust hole 43 on the outer cover plate 42, part of the oil and gas generated in the capacitor oil tank body can enter a cavity 5 surrounded by the inner top surface of the sealing cover 3, the outer cover plate 42, the oil filling port 1, and the solder, thereby playing a role in stabilizing pressure and also ensuring that the oil tank is in a full oil state when the solder is sealed. Ultimately, the product quality can be effectively improved, and the qualified rate of the product factory test is increased.
[0025] The technical solution of the utility model is described in detail above in combination with specific embodiments, and the described specific embodiments are used to help understand the concept of the utility model. Derivations and variations made by those skilled in the art based on the specific embodiments of the utility model also fall within the protection scope of the utility model.
Claims
1. A capacitor oil tank with an oil filling port anti-leaking tin structure, comprising a capacitor oil tank body and a sealing cover (3), wherein the capacitor oil tank body has an oil filling port (1) extending upward, the capacitor oil tank body is provided with a sealing ring groove extending downward around the oil filling port (1), the sealing cover (3) is provided on the outer side of the oil filling port (1), and the bottom end of the sealing cover (3) is placed in the sealing ring groove, and a solder (2) is provided in the sealing ring groove for sealing the gap between the sealing ring groove and the bottom end of the sealing cover (3); characterized in that: The oil filling port (1) is provided with a leak-proof tin plug, which comprises an inner plug ring (41) closely attached to the inner ring wall of the oil filling port (1) and an outer cover plate (42) closely attached to the top end surface of the oil filling port (1). The inner plug ring (41) and the outer cover plate (42) are an integral structure with a T-shaped vertical cross section. The middle of the outer cover plate (42) is evenly distributed with exhaust holes (43). A cavity (5) is provided between the inner top surface of the sealing cover (3) and the outer cover plate (42). A gap is provided between the inner ring surface of the sealing cover (3) and the outer ring surface of the oil filling port (1).
2. A capacitor oil tank with an oil filling port anti-leaking tin structure according to claim 1, characterized in that: The diameter of the exhaust hole (43) is less than 1 mm.
3. The capacitor oil tank with an oil filling port anti-leaking tin structure according to claim 1, characterized in that: The anti-leakage tin plug is made of a thin spring steel sheet.