Transformer oil degassing guide structure

Abstract

The utility model relates to transformer oil degassing technical field, and disclose a kind of transformer oil degassing flow guide structure, including threaded tube, the threaded tube top outer wall is fixedly connected with sealing ring, the threaded tube top is equipped with flow guide inlet, the threaded tube is provided with the adjusting mechanism of controlling oil flow rate in.It is to avoid uneven oil output, by the adjusting mechanism of ball valve, reset spring and flow limiting plate, slider of flow guide outlet place being arranged in threaded tube, when oil intake increases, oil pressure promotes ball valve to pull reset spring, simultaneously, flow limiting plate moves in sliding slot by slider, reduce the effective flow area of flow guide outlet, on the contrary, when oil intake reduces, reset spring pulls back ball valve reset, flow limiting plate moves back, opening increases, ensure that in different oil intake, the flow of flow guide outlet remains substantially balanced, so that transformer oil can form uniform, stable oil film on flow guide disc, improve the uniformity and overall efficiency of degassing.

Description

Technical Field

[0001] This utility model relates to the field of transformer oil degassing technology, specifically a transformer oil degassing flow guiding structure. Background Technology

[0002] The transformer oil degassing and guiding structure is the core component of the vacuum degassing equipment. Its function is not simply to guide the flow, but through a unique physical design, it transforms the collected transformer oil into a uniform, slowly falling large-area oil film, thereby greatly improving the removal efficiency of dissolved gases (such as moisture and hydrogen) in the oil.

[0003] According to a transformer oil degassing and guiding structure disclosed in the above application (publication number: CN221846179U), a lateral guiding outlet is provided, which allows the transformer oil to flow out more slowly and evenly, facilitates more uniform heating of the transformer oil, increases the flow time of the transformer oil in the air, makes degassing more thorough, and improves degassing efficiency.

[0004] However, in actual use, when the oil flow rate is too high, the oil cannot spread smoothly on the guide plate to form an oil film; when the flow rate is too low, it cannot cover the entire edge of the guide plate, causing the oil curtain to break and affecting the degassing efficiency. In view of this, we propose a transformer oil degassing guide structure. Utility Model Content

[0005] The purpose of this invention is to provide a transformer oil degassing and guiding structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a transformer oil degassing and guiding structure, comprising a threaded tube, a sealing ring fixedly connected to the outer wall of the top of the threaded tube, a guiding inlet opened at the top of the threaded tube, a guiding boss fixedly connected to the bottom of the threaded tube, a guiding outlet opened on the outer wall of the guiding boss, a guiding disc fixedly connected to the bottom of the guiding boss, and an adjusting mechanism for controlling the oil flow rate provided inside the threaded tube, the adjusting mechanism comprising: A fixed block is fixedly connected to the inner wall of the threaded pipe. A return spring is fixedly connected to the side wall of the fixed block. A ball valve is fixedly connected to the other end of the return spring. A groove is provided on the inner wall of the flow outlet. A slider is slidably connected in the groove. A flow limiting plate is fixedly connected to the end of the slider away from the groove.

[0007] Preferably, the diameter at the flow inlet is larger than the inner diameter of the threaded pipe, and the size of the ball valve is matched with the inner diameter of the threaded pipe, so that the ball valve will not completely block the threaded pipe.

[0008] Preferably, the guide protrusion is provided with a plurality of guide outlets, and the guide outlets are distributed in a circular pattern on the outer wall of the guide protrusion, so that oil can flow out from each guide outlet.

[0009] Preferably, the flow restrictor is slidably connected to the inner wall of the flow outlet, and the size of the flow restrictor is half that of the flow outlet to prevent excessive oil outflow.

[0010] Preferably, the bottom of the guide outlet is flush with the guide plate, and the upper surface of the guide plate is designed to be inclined, so that the oil can fall naturally and promote the formation of an intact oil film.

[0011] Preferably, the slide groove is provided with a fixing mechanism for limiting the slider. The fixing mechanism includes a small spring, one end of which is fixedly connected to the inner wall of the slide groove, and the other end of which is fixedly connected to a limiting block.

[0012] Preferably, the size of the limiting block is adapted to the size of the slide groove, and a fixing mechanism is provided in the guide outlet to ensure that the position of the slider remains unchanged and facilitates disassembly.

[0013] Compared with the prior art, this utility model provides a transformer oil degassing and guiding structure, which has the following beneficial effects:

[0014] 1. To avoid uneven oil flow in this transformer oil degassing and guiding structure, an adjustment mechanism consisting of a ball valve and a return spring installed inside the threaded pipe, and a current-limiting plate and a slider at the guide outlet is used. When the oil inlet increases, the oil pressure pushes the ball valve to pull the return spring, and at the same time, the current-limiting plate moves in the slide groove through the slider, reducing the effective flow area of ​​the guide outlet. Conversely, when the oil inlet decreases, the return spring pulls the ball valve back to its original position, the current-limiting plate moves back, and the opening increases. This ensures that the flow rate at the guide outlet remains basically balanced under different oil inlet conditions, so that the transformer oil can form a uniform and stable oil film on the guide plate, improving the uniformity of degassing and overall efficiency.

[0015] 2. The transformer oil degassing and guiding structure, through the setting of a fixing mechanism, limits the movement of the slider to prevent the current limiting plate from vibrating and displacing violently under oil pressure impact, thus ensuring the stability of the adjustment process. At the same time, the bottom of the guiding outlet is flush with the upper surface of the inclined guiding plate, so that the oil can spread smoothly along the inclined surface after flowing out. This design reduces the risk of oil stagnation and impurity accumulation, and the fixing mechanism is easy to disassemble, clean and maintain, improving the long-term operational reliability and convenience of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the bottom vertical section structure of this utility model;

[0019] Figure 4 This is a schematic diagram of part A of the present utility model.

[0020] In the diagram: 1. Threaded pipe; 2. Sealing ring; 3. Flow inlet; 4. Flow guide boss; 5. Flow guide outlet; 6. Flow guide plate; 7. Adjustment mechanism; 71. Fixing block; 72. Return spring; 73. Ball valve; 74. Slide groove; 75. Sliding block; 76. Flow limiting plate; 8. Fixing mechanism; 81. Small spring; 82. Limiting block. Detailed Implementation

[0021] like Figures 1-4 As shown, this utility model provides a technical solution: a transformer oil degassing and guiding structure, including a threaded pipe 1, a sealing ring 2 fixedly connected to the outer wall of the top of the threaded pipe 1, a guiding inlet 3 opened at the top of the threaded pipe 1, a guiding boss 4 fixedly connected to the bottom of the threaded pipe 1, a guiding outlet 5 opened on the outer wall of the guiding boss 4, a guiding plate 6 fixedly connected to the bottom of the guiding boss 4, and an adjusting mechanism 7 for controlling the oil flow rate is provided inside the threaded pipe 1. The adjusting mechanism 7 includes: a fixed block 71, a reset spring 72, a ball valve 73, a slide groove 74, a slider 75, and a current limiting plate 76.

[0022] In an embodiment of this utility model, the fixing block 71 is fixedly connected to the inner wall of the threaded pipe 1, a return spring 72 is fixedly connected to the side wall of the fixing block 71, a ball valve 73 is fixedly connected to the other end of the return spring 72, a slide groove 74 is provided on the inner wall of the flow outlet 5, a slider 75 is slidably connected in the slide groove 74, and a flow limiting plate 76 is fixedly connected to the end of the slider 75 away from the slide groove 74.

[0023] In one embodiment of this utility model, a sealing ring 2 is fixedly connected to the top outer wall of the threaded tube 1. The sealing ring 2 is used to enhance the sealing performance between the entire structure and the oil inlet of the degassing chamber. A flow guide inlet 3 is opened at the top of the threaded tube 1, through which transformer oil enters the interior of the structure. A flow guide boss 4 is fixedly connected to the bottom of the threaded tube 1. Multiple flow guide outlets 5 are evenly opened on the outer wall of the flow guide boss 4 to guide the oil flow to the surrounding area. A flow guide plate 6 is fixedly connected to the bottom of the flow guide boss 4. The main function of the flow guide plate 6 is to receive and guide the oil flow to form a uniform oil film. An adjustment mechanism 7 for automatically controlling the oil flow rate is provided inside the threaded tube 1. The regulating mechanism 7 is achieved by the coordinated operation of multiple components, including a fixing block 71, which is fixedly connected to the inner wall of the threaded pipe 1 by welding or integral molding. A return spring 72 is connected to the side wall of the fixing block 71, and the other end of the return spring 72 is connected to a ball valve 73. The ball valve 73 is moved by the extension and contraction of the spring, thereby adjusting the flow area of ​​the main channel. A groove 74 is provided on the inner wall of the guide outlet 5, and a sliding slider 75 is provided in the groove 74. One end of the slider 75 extends out of the groove 74 and is connected to a flow limiting plate 76. When the oil pressure changes, the flow limiting plate 76 can slide along the inner wall of the guide outlet 5 to change the effective flow area of ​​the outlet.

[0024] In addition, the diameter of the guide inlet 3 is designed to be larger than the inner diameter of the threaded pipe 1. This gradually expanding structure facilitates smooth oil flow and reduces eddies and energy loss. Simultaneously, the size of the ball valve 73 matches the inner diameter of the threaded pipe 1, ensuring that the ball valve 73 can effectively regulate the flow rate of the main oil circuit. Multiple guide outlets 5 are arranged in a ring on the guide boss 4, and these outlets are evenly distributed circumferentially, ensuring that the oil flow can diffuse evenly in all directions. The flow restrictor 76 is connected to the inner wall of the guide outlet 5 by a sliding fit. The size of the flow restrictor 76 is approximately half the opening size of the guide outlet 5, thus ensuring both adjustment sensitivity and structural stability. The bottom of the guide outlet 5 is flush with the upper surface of the guide plate 6. This smooth transition design facilitates the natural spread of the oil flow. The upper surface of the guide plate 6 is designed with an inclination. The tilt angle is precisely calculated to ensure smooth oil flow and the formation of a uniform oil film. A fixing mechanism 8 is also installed inside the chute 74. This mechanism includes a small spring 81 and a limiting block 82. One end of the small spring 81 is fixed to the inner wall of the chute 74, and the other end is connected to the limiting block 82. The spring 81 buffers and limits the movement of the slider 75 through elasticity. The size of the limiting block 82 is precisely matched with the chute 74 to ensure smooth movement. Each flow outlet 5 is equipped with a complete fixing mechanism 8 to ensure synchronous flow regulation at each outlet. The chute 74 also has a fixing mechanism 8, composed of a small spring 81 and a limiting block 82. One end of the small spring 81 is fixed to the inner wall of the chute 74, and the other end is connected to the limiting block 82. The size of the limiting block 82 is precisely matched with the chute 74 to effectively buffer the movement of the slider 75.

[0025] In this utility model, during use, when transformer oil enters the threaded pipe 1 from the inlet 3, under normal flow conditions, the return spring 72 supports the ball valve 73 to maintain a certain opening. The oil flows downward through the gap between the ball valve 73 and the pipe wall. When the inlet pressure increases, the oil pressure pushes the ball valve 73 to pull the return spring 72, reducing the flow area of ​​the main channel. At the same time, the increased pressure is transmitted to each inlet outlet 5 through the oil. The flow limiting plate 76 slides in the groove 74 through the slider 75, reducing the effective flow area of ​​the inlet outlet 5. The fixing mechanism 8 set in the groove 74 buffers and precisely positions the slider 75 to prevent damage to the fixing mechanism 8 and ensure smooth adjustment. Conversely, when the inlet pressure decreases, the return spring 72 pulls the ball valve 73 back to its original position, increasing the flow area. After the oil flows out from the inlet outlet 5, it spreads naturally along the inclined guide plate 6 to form a uniform oil film curtain for degassing.

[0026] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A transformer oil degassing and guiding structure, comprising a threaded pipe (1), wherein a sealing ring (2) is fixedly connected to the outer wall of the top of the threaded pipe (1), a guiding inlet (3) is opened at the top of the threaded pipe (1), a guiding boss (4) is fixedly connected to the bottom of the threaded pipe (1), a guiding outlet (5) is opened on the outer wall of the guiding boss (4), and a guiding plate (6) is fixedly connected to the bottom of the guiding boss (4), characterized in that: The threaded pipe (1) is provided with an adjustment mechanism (7) for controlling the oil flow rate. The adjustment mechanism (7) includes: A fixed block (71) is fixedly connected to the inner wall of the threaded pipe (1). A return spring (72) is fixedly connected to the side wall of the fixed block (71). A ball valve (73) is fixedly connected to the other end of the return spring (72). A slide groove (74) is provided on the inner wall of the flow outlet (5). A slider (75) is slidably connected in the slide groove (74). A flow limiting plate (76) is fixedly connected to the end of the slider (75) away from the slide groove (74).

2. The transformer oil degassing and guiding structure according to claim 1, characterized in that: The diameter of the flow inlet (3) is larger than the inner diameter of the threaded pipe (1), and the size of the ball valve (73) is compatible with the inner diameter of the threaded pipe (1).

3. The transformer oil degassing and guiding structure according to claim 1, characterized in that: The guide boss (4) is provided with a number of guide outlets (5), and the guide outlets (5) are distributed in a circular pattern on the outer wall of the guide boss (4).

4. The transformer oil degassing and guiding structure according to claim 1, characterized in that: The flow restrictor (76) is slidably connected to the inner wall of the flow outlet (5), and the size of the flow restrictor (76) is half that of the flow outlet (5).

5. The transformer oil degassing and guiding structure according to claim 1, characterized in that: The bottom of the flow outlet (5) is flush with the flow guide plate (6), and the upper surface of the flow guide plate (6) is inclined.

6. The transformer oil degassing and guiding structure according to claim 1, characterized in that: The groove (74) is provided with a fixing mechanism (8) for limiting the slider (75). The fixing mechanism (8) includes a small spring (81). One end of the small spring (81) is fixedly connected to the inner wall of the groove (74), and the other end of the small spring (81) is fixedly connected to a limiting block (82).

7. The transformer oil degassing and guiding structure according to claim 6, characterized in that: The size of the limiting block (82) is adapted to the size of the chute (74), and a fixing mechanism (8) is provided in the guide outlet (5).

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