A structure of an exhaust plug for a transformer radiator

Abstract

The present invention discloses a structure of an exhaust plug for a transformer radiator fin, comprising: a plug base, one end of the plug base is provided with a pressing and assembling surface, and a first assembling hole is provided on the plug base; a connecting body detachably and adaptively connected in the first assembling hole; a plug cover, the plug cover includes a head and an assembling column connected to the head; wherein: the assembling column of the plug cover is adaptively inserted into a second assembling hole of the connecting body, and a connecting pin passes through a third assembling hole and a pin hole to tightly connect the plug cover and the connecting body; the plug cover together with the connecting body is hermetically assembled in the first assembling hole of the plug base, and the head of the plug cover presses a sealing gasket on the pressing and assembling surface of the plug base. Implementing the structure of the exhaust plug for the transformer radiator fin of the present invention effectively solves the problem that transformer oil gushes out during the replacement process of the sealing gasket, affecting the operation and causing waste; the structure is concise, enhancing the sealing performance and operation convenience.

Description

Technical Field

[0001] The present invention relates to the technical field of components of oil-immersed transformers, and particularly to an exhaust plug structure for a transformer radiator fin. Background Art

[0002] In the prior art, oil-immersed transformers are mainly cooled by the circulation of internal insulating oil. The fin radiator is an important component for increasing the convection and heat dissipation effect of transformer oil in oil-immersed transformers, and multiple exhaust plugs are designed at its top.

[0003] Due to unreasonable structure, traditional radiator exhaust plugs mainly have the following technical defects: the sealing effect decreases due to the aging and hardening of the gasket. As the operation years of the transformer increase, the defect rate of oil leakage from the exhaust plug gradually increases. When replacing the gasket, due to the influence of oil pressure, transformer oil gushes out after unscrewing the exhaust plug cover. On the one hand, the gushing of transformer oil affects the quality of the gasket replacement operation, and on the other hand, it also causes waste of transformer insulating oil and environmental pollution. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an exhaust plug structure for a transformer radiator fin, which effectively solves the problem that transformer oil gushes out during the gasket replacement process, affecting the operation and causing waste; the structure is concise, enhancing the sealing performance and operation convenience.

[0005] To solve the above technical problem, the present invention provides an exhaust plug structure for a transformer radiator fin, including: a seat adapted to be assembled and connected to the manifold of the transformer radiator fin, one end of the seat is provided with a pressing assembly surface, and the seat is provided with a first assembly hole; a connecting body detachably and adaptively connected to the first assembly hole, one end of the connecting body is provided with a second assembly hole, a third assembly hole penetrating through the connecting body is opened on one side end of the connecting body, and the third assembly hole is communicated with the second assembly hole; a plug cover, the plug cover includes a head and an assembly column connected to the head, and a pin hole is provided on the assembly column; and a gasket; wherein: the assembly column of the plug cover is adaptively inserted into the second assembly hole of the connecting body, and a connecting pin passes through the third assembly hole and the pin hole to tightly connect the plug cover and the connecting body; the plug cover together with the connecting body is hermetically assembled in the first assembly hole of the seat, and the head of the plug cover presses the gasket on the pressing assembly surface of the seat.

[0006] Wherein, an internal thread is provided in the first assembly hole, an external thread adapted to the internal thread is provided on the outer periphery of one side end of the connecting body, and the connecting body is threadedly and hermetically connected to the seat.

[0007] Wherein, the connecting body remains hermetically connected to the first assembly hole; by screwing the plug cover, the whole connecting body is driven to rise. After the third assembly hole moves above the pressing assembly surface and exposes the connecting pin, the plug cover is disassembled to replace the gasket.

[0008] Among them, the first assembly hole is a round hole, and the connecting body is a cylinder.

[0009] Among them, the second assembly hole is a square groove, and the assembly post is a square post structure adapted to the square groove, so that the twisting plug cover drives the connecting body to rotate synchronously.

[0010] Among them, the third assembly hole is a square hole, and the pin hole is a through hole structure with a square cross-sectional shape, so that after the connecting pin is assembled between them, the twisting plug cover drives the connecting body to rotate synchronously.

[0011] Among them, the size of the pin hole is adapted to and corresponds to the size of the first assembly hole.

[0012] Among them, the gasket is a nitrile rubber gasket, and the plug cover presses the gasket on the pressing assembly surface to perform secondary sealing.

[0013] Among them, the first assembly hole discharges the air accumulated at the top of the transformer, preventing gas from entering the main transformer body and causing transformer insulation failure.

[0014] Implementing the exhaust plug structure of the transformer radiator of the present invention has the following beneficial effects: for the exhaust plug structure of the transformer radiator, the assembly post of the plug cover is adaptively inserted into the second assembly hole of the connecting body, and the connecting pin passes through the third assembly hole and the pin hole to tightly connect the plug cover and the connecting body; the plug cover together with the connecting body is hermetically assembled in the first assembly hole of the plug seat, and the head of the plug cover presses the gasket on the pressing assembly surface of the plug seat. For the exhaust plug structure of the transformer radiator, when the external gasket seal fails and the exhaust plug cover is unscrewed, it can still rely on the internal sealing effect to prevent the transformer oil from gushing out, facilitating the replacement operation of the gasket, ensuring the operation quality, and avoiding the problems of transformer oil waste and environmental pollution caused by the gushing of transformer oil; the structure is concise, enhancing the sealing performance and operation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is an assembly structure schematic diagram of the exhaust plug structure of the transformer radiator in the embodiment of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the plug seat in the embodiment of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the connecting body in the embodiment of the present invention.

[0019] Figure 4 This is a schematic structural diagram of the plug cover in the embodiment of the present invention.

[0020] Figure 5 This is a schematic structural diagram of the connecting pin in the embodiment of the present invention. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figures 1 - 5 shown, this is the first embodiment of the exhaust plug structure of the transformer radiator in the present invention.

[0023] The exhaust plug structure of the transformer radiator in this embodiment includes: a plug seat 1 for assembling and connecting to the manifold of the transformer radiator. One end of the plug seat 1 is provided with a pressing assembly surface 11. A first assembly hole 12 is provided on the plug seat. The first assembly hole 12 is used to discharge the air accumulated at the top of the transformer, preventing gas from entering the main transformer body and causing transformer insulation failure; a connecting body 2 detachably and adaptively connected in the first assembly hole 12. One end of the connecting body 2 is provided with a second assembly hole 21. A third assembly hole 22 penetrating the connecting body 2 is opened on one end side of the connecting body 2. The third assembly hole 22 is communicated with the second assembly hole 21; a plug cover 3, the plug cover 3 includes a head 31 and an assembly column 32 connected to the head 31. A pin hole 322 is provided on the assembly column 32; and a gasket 4; wherein: the assembly column 32 of the plug cover 3 is adaptively inserted into the second assembly hole 21 of the connecting body 2. A connecting pin 5 passes through the third assembly hole 22 and the pin hole 322 to tightly connect the plug cover 3 and the connecting body 2; the plug cover 3 together with the connecting body 2 is hermetically assembled in the first assembly hole 12 of the plug seat 1. The head 31 of the plug cover 3 presses the gasket 4 on the pressing assembly surface 11 of the plug seat 1.

[0024] During specific implementation, the plug seat 1 is welded to the manifold of the transformer radiator. The first assembly hole 12 thereon is a hollow hole for discharging the gas collected at the top of the transformer. Poor sealing of the first assembly hole 12 will cause transformer oil leakage. In this embodiment, the first assembly hole 12 is a round hole, and an internal thread 121 is provided at the opening position thereof, which is threadedly adapted to the external thread 23 on the connecting body 2. The connecting body 2 seals the plug seat 1 by means of threaded sealing connection to achieve the function of sealing the interior.

[0025] Further, the connecting body 2 is a cylinder, and it is detachably connected to the first assembly hole 12 to maintain a sealed connection with the plug seat 1. One end of the connecting body 2 is provided with a second assembly hole 21, and a third assembly hole 22 penetrating the connecting body 2 is formed on one side of the connecting body 2, and the third assembly hole 22 communicates with the second assembly hole 21.

[0026] The plug cover 3 includes a head 31 and an assembly post 32 connected to the head 31, and a pin hole 322 is provided on the assembly post 32. During implementation, the second assembly hole 21 is a square groove, and the assembly post 32 is a square post structure adapted to the square groove, so that twisting the plug cover 3 can drive the connecting body 2 to rotate synchronously.

[0027] Further, the third assembly hole 22 is a square hole, and the pin hole 322 is a through hole structure with a square cross-sectional shape. After assembling the connecting pin 5 therebetween, twisting the plug cover 3 can drive the connecting body 2 to rotate synchronously. It can be understood that: the size of the pin hole 322 is adapted to and corresponds to the size of the first assembly hole 22, and the plug cover 3 and the connecting body 2 are locked by the connecting pin 5, so that when the plug cover 3 is rotated, the connecting body 2 is driven to move synchronously.

[0028] During implementation, the assembly post 32 of the plug cover 3 is adaptively inserted into the second assembly hole 21 of the connecting body 2, and the connecting pin 5 passes through the third assembly hole 22 and the pin hole 322 to tightly connect the plug cover 3 and the connecting body 2; the plug cover 3 together with the connecting body 2 is hermetically assembled in the first assembly hole 12 of the plug seat 1, and the head 31 of the plug cover 3 presses the sealing gasket 4 on the pressing assembly surface 11 of the plug seat 1.

[0029] When replacing the sealing gasket 4, twist the plug cover 3 to drive the whole connecting body 2 to rise. After the third assembly hole 22 moves above the pressing assembly surface 11 to expose the connecting pin 5, disassemble the plug cover 3 and replace the sealing gasket 4. After the plug cover 3 is tightened, it presses the sealing gasket 4 tightly, so as to isolate external air and rainwater from the insulating oil inside the transformer and prevent the internal transformer oil from leaking under the influence of oil pressure.

[0030] Preferably, the sealing gasket 4 is a nitrile rubber sealing gasket, and the plug cover 3 presses the sealing gasket 4 on the pressing assembly surface 11 for secondary sealing to achieve the function of transformer sealing.

[0031] In the specific implementation of the transformer radiator exhaust plug structure in this embodiment, after the plug cover 3 and the connecting body 2 are assembled through the above assembly structure, the plug cover 3 together with the connecting body 2 is hermetically assembled in the first assembly hole 12 of the plug seat 1, and the head 31 of the plug cover 3 presses the sealing gasket 4 on the pressing assembly surface 11 of the plug seat 1 to achieve the first sealing function for the insulating oil.

[0032] During the implementation of the first seal, the replacement of the gasket 4 can be completed. Specifically: Rotate the plug cover 3 to drive the entire connecting body 2 to rise. After the third assembly hole 22 moves above the pressing assembly surface 11 to expose the connecting pin 5, remove the connecting pin 5. At this time, since there is still part of the thread of the connecting body 2 fastened to the first assembly hole 12, the internal seal can still play a sealing role, and the transformer oil will not spurt out.

[0033] Immediately afterwards, lift the plug cover 3 upwards and take it out, separate it from the connecting body 2, remove the old gasket 4, and replace it with a new gasket. Insert the plug cover 3 into the connecting body 2 and install the connecting pin 5 for connection. Rotate the plug cover 3 clockwise to drive the head 31 of the plug cover 3 to press against the gasket 4 on the pressing assembly surface 11 of the plug seat 1 to achieve the second seal of the insulating oil.

[0034] Implementing the exhaust plug structure of the transformer radiator of the present invention has the following beneficial effects: For the exhaust plug structure of the transformer radiator, the assembly column of the plug cover is adaptively inserted into the second assembly hole of the connecting body, and the connecting pin passes through the third assembly hole and the pin hole to firmly connect the plug cover and the connecting body; the plug cover together with the connecting body is sealed and assembled in the first assembly hole of the plug seat, and the head of the plug cover presses against the gasket on the pressing assembly surface of the plug seat. For the exhaust plug structure of the transformer radiator, when the external gasket seal fails and the exhaust plug cover is screwed out, the internal seal can still prevent the transformer oil from gushing out, facilitating the replacement operation of the gasket, ensuring the operation quality, and avoiding the problems of waste of transformer oil and environmental pollution caused by the gushing of transformer oil; the structure is concise, enhancing the sealing performance and operation convenience.

Claims

1. A structure of an exhaust plug for a transformer radiator, characterized in that, Including: A socket adapted to be assembled and connected to the busbar of the transformer radiator. One end of the socket is provided with a pressing assembly surface, and the socket is provided with a first assembly hole; A connector detachably and adaptively connected to the first assembly hole. One end of the connector is provided with a second assembly hole, and a third assembly hole penetrating through the connector is opened on one side end of the connector. The third assembly hole is communicated with the second assembly hole; A plug cover, which includes a head and an assembly post connected to the head. The assembly post is provided with a pin hole; and A gasket; wherein: The assembly post of the plug cover is adaptively inserted into the second assembly hole of the connector, and a connecting pin passes through the third assembly hole and the pin hole to tightly connect the plug cover and the connector; The plug cover together with the connector is hermetically assembled in the first assembly hole of the socket, and the head of the plug cover presses the gasket on the pressing assembly surface of the socket.

2. The structure of an exhaust plug for a transformer radiator according to claim 1, characterized in that, Internal threads are provided in the first assembly hole, and external threads adapted to the internal threads are provided on the outer periphery of one side end of the connector. The connector is threadedly and hermetically connected to the socket.

3. The structure of an exhaust plug for a transformer radiator according to claim 2, characterized in that, The connector remains hermetically connected to the first assembly hole; Twist the plug cover to drive the whole connector to rise. After the third assembly hole moves above the pressing assembly surface to expose the connecting pin, disassemble the plug cover and replace the gasket.

4. The structure of an exhaust plug for a transformer radiator according to any one of claims 1 - 3, characterized in that, The first assembly hole is a round hole, and the connector is a cylinder.

5. The structure of an exhaust plug for a transformer radiator according to claim 1, characterized in that, The second assembly hole is a square groove, and the assembly post is a square post structure adapted to the square groove, so that twisting the plug cover drives the connector to rotate synchronously.

6. The structure of an exhaust plug for a transformer radiator according to claim 1, characterized in that, The third assembly hole is a square hole, and the pin hole is a through hole structure with a square cross-section shape, so that after the connecting pin is assembled between them, twisting the plug cover drives the connector to rotate synchronously.

7. The structure of an exhaust plug for a transformer radiator according to claim 5, characterized in that, The size of the pin hole is adaptively corresponding to the size of the first assembly hole.

8. The structure of an exhaust plug for a transformer radiator according to claim 1, characterized in that, The gasket is a nitrile rubber gasket, and the plug cover presses the gasket on the pressing assembly surface for secondary sealing.

9. The structure of an exhaust plug for a transformer radiator according to claim 1, characterized in that, The first assembly hole discharges the air accumulated at the top of the transformer to prevent gas from entering the main transformer body and causing transformer insulation failure.

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