Transformer ascending flanged base structure
By installing air guide grooves and sealing rings on the bottom surface of the flange on the transformer riser, combined with the horizontal exhaust pipe design, the problem of gas accumulation is solved, improving the safety of the transformer and the timeliness of fault early warning.
Patent Information
- Application Number
- CN202423042695.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-10
AI Technical Summary
Existing transformer risers are inefficient at removing gas, leading to gas accumulation, delayed fault signals, and potentially worsening transformer faults and threatening grid safety.
A venting groove is installed on the bottom surface of the upper flange of the transformer riser base, and a sealing ring is installed in the center hole. The sealing ring fills the thickness space at the bottom of the venting groove, so that the bottom of the groove is located at the highest position inside the riser base. Combined with the horizontal exhaust pipe design, this ensures that the gas is discharged in time and prevents external dust from entering.
This allows for the timely and complete removal of gas, improving transformer safety, preventing dust from entering, and reducing fault delays and accident risks.
Smart Images
Figure CN223651228U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transformer field especially, it is a kind of transformer elevated seat structure. BACKGROUND
[0002] With the rapid development of power transmission and transformation industry, the requirement of power grid operation stability is higher and higher, and three-phase power transformer as the core equipment of transformer substation, early warning becomes more and more important after abnormality.
[0003] During the long-time operation of three-phase power transformer, due to the effect of internal electrical, thermal stress and other factors, it may cause insulation material aging or transformer oil decomposition, and then produce gas. If these gases are not discharged in time, they will accumulate in the transformer, which will threaten the safe operation of the transformer. In order to deal with this problem, gas relay is equipped inside the transformer. Once the gas in the transformer reaches a certain value, the gas relay will send a fault signal to remind the operator to take timely measures to avoid the fault from being enlarged.
[0004] However, the widely used transformer elevated seat has obvious shortcomings in gas discharge. Due to the limitation of design, there is a large gas collection space inside the elevated seat, which greatly reduces the efficiency of gas discharge. At the same time, due to incomplete gas discharge, the time of receiving fault signal by gas relay will be delayed accordingly, which not only may cause the transformer fault to be further deteriorated, but also may pose a serious threat to the safe operation of the whole power grid system. In extreme cases, even major accidents such as transformer short circuit and damage may occur. SUMMARY
[0005] The utility model provides a kind of transformer elevated seat structure that gas is more completely guided to the problem that current transformer elevated seat inside gas is not discharged in time, is easy to accumulate gas.
[0006] To solve the above problems, the utility model adopts the technical scheme that a kind of transformer elevated seat structure, including cylinder, the upper end of the cylinder is equipped with upper flange, the bottom surface of the upper flange is equipped with gas guide groove, one end of gas guide groove is communicated to the center hole of upper flange, the center hole of the upper flange is installed with sealing ring, the lower end surface of the sealing ring is not higher than the groove bottom surface of the gas guide groove;Upper flange is also equipped with gas guide hole that passes through up and down, and the lower end of the gas guide hole is communicated to the gas guide groove.This scheme sets up gas guide groove on the bottom surface of upper flange, sets up exhaust structure in the highest position in elevated seat, can guarantee that gas is discharged in time, fully;Sealing ring is installed in the center hole of flange simultaneously, fills the thickness of groove bottom of gas guide groove in center hole, that is, fills the space in elevated seat higher than gas guide groove, completely avoids that gas remains in elevated seat, and then guarantees the safety of transformer.
[0007] Preferably, the top surface of the upper flange is provided with an exhaust pipe, the axis of the exhaust pipe is horizontally arranged, and the upper end of the gas guide hole is communicated with the exhaust pipe. The horizontal exhaust pipe is arranged, the gas is horizontally discharged, the external space of the gas guide hole is blocked by the exhaust pipe wall, and external dust can be prevented from entering the riser.
[0008] Preferably, the central hole of the upper flange is a stepped hole, the large-diameter section of the stepped hole is located on the upper surface of the upper flange, and the sealing ring is installed in the large-diameter section. The installation position of the sealing ring is provided, the installation of the sealing ring is ensured, and the plugging effect is improved.
[0009] Preferably, the sealing ring comprises two half-ring sealing ring monomers, and the two sealing ring monomers are connected end to end. The extrusion deformation of the sealing ring can be compensated, and the thickness of the sealing ring after being pressed is more uniform.
[0010] Preferably, a porcelain sleeve is installed on the upper flange, the bottom surface of the porcelain sleeve is provided with a porcelain sleeve core body, the porcelain sleeve core body is inserted into the central hole of the upper flange, and the bottom surface of the porcelain sleeve at least partially presses the sealing ring into the small-diameter end of the central hole.
[0011] Preferably, the gas guide groove is arranged along the radial direction of the upper flange, and the gas guide hole is located at one end of the gas guide groove close to the outer periphery of the upper flange.
[0012] It can be seen from the above technical scheme that the upper flange of the riser is provided with a gas guide groove, the thickness space formed in the central hole of the upper flange is filled by the thickness of the sealing ring filling the groove bottom of the gas guide groove, the groove bottom of the gas guide groove is located at the highest position in the riser, the gas in the riser is discharged in time and thoroughly, and the safety of the transformer is improved; the structure is reasonable, the exhaust pipe is arranged transversely on the outside of the upper flange, external dust can be prevented from falling into the transformer, the sealing ring is two-section butt joint, the pressure deformation of the sealing ring is more uniform, and the installation effect is improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical scheme of the present application, the drawings required in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.
[0014] Figure 1 The structure of the specific embodiment of the present application is shown in the figure.
[0015] Figure 2 The top view of the upper flange in the specific embodiment of the present application is shown in the figure.
[0016] MAIN REFERENCE NUMERALS
[0017] 1. Cylinder body, 2. Upper flange, 3. Air guide groove, 4. Sealing ring, 5. Air guide hole, 6. Porcelain sleeve, 6-1. Porcelain sleeve core, 7. Exhaust pipe. Detailed Implementation
[0018] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.
[0019] like Figure 1 , 2 As shown, a transformer riser structure includes a cylindrical body 1. The upper end of the cylindrical body 1 is provided with an upper flange 2. The upper flange 2 has a central hole for installing a porcelain bushing 6. The porcelain bushing 6 includes a frustum-shaped upper body. The bottom center of the upper body is a porcelain bushing core 6-1, which is inserted into the central hole of the upper flange. The bottom surface of the upper flange 2 is provided with a venting groove 3, which is arranged radially along the upper flange. One end of the venting groove 3 is connected to the central hole of the upper flange 2, and the other end is close to the outer edge of the upper flange 2, where a venting hole 5 is connected. The venting hole 5 vertically penetrates the upper flange 2. An exhaust pipe 7 is also provided on the top surface of the upper flange 2. The axis of the exhaust pipe 7 is horizontally set, and the upper end of the venting hole 5 is connected to the exhaust pipe 7.
[0020] like Figure 1 The opening of the air guide groove 3 faces downwards, so the bottom of the groove is located between the top and bottom surfaces of the upper flange 2. Therefore, in the vertical direction, there is a certain thickness between the bottom of the air guide groove and the top surface of the upper flange 2. Consequently, there is a certain space in the central hole above the bottom of the air guide groove. To prevent gas from accumulating in this small space, this solution installs a sealing ring 4 in the central hole of the upper flange 2. Specifically:
[0021] The center hole of the upper flange 2 is a stepped hole, and the large-diameter section of the stepped hole is located on the upper surface of the upper flange 2. The sealing ring 4 is installed in the large-diameter section. The sealing ring 4 includes two semi-annular sealing ring units connected end to end. After the porcelain sleeve 6 is installed, the porcelain sleeve 6 squeezes and deforms the sealing ring, so that part of the sealing ring is pressed into the small-diameter section, thus filling the space mentioned above. That is, after the porcelain sleeve 6 is installed, the lower end face of the sealing ring 4 is not higher than the bottom surface of the air guide groove 3, so that the bottom surface of the groove is located at the highest position in the inner cavity of the riser. The rising position of the gas will not be higher than the bottom surface of the air guide groove 3, and thus it will be completely discharged from the air guide groove, air guide hole, and exhaust pipe. The upper flange 2 is also provided with an air guide hole 5 that runs vertically through the upper and lower parts and the lower end connects to the air guide groove 3.
[0022] The beneficial effects of the present application are that the flange bottom surface of the lifting seat is provided with a gas guide groove, and the thickness space formed in the center hole of the upper flange by the thickness of the sealing ring filling the groove bottom of the gas guide groove makes the groove bottom of the gas guide groove be at the highest position inside the lifting seat, which ensures that the gas in the lifting seat is timely and completely guided out, and improves the safety of the transformer; the structure design is reasonable, the horizontally arranged exhaust pipe is arranged outside the upper flange, which can prevent external dust from falling into the transformer, the sealing ring is two-section butt joint, which makes the pressure deformation more uniform, and improves the installation effect.
[0023] The above description of the disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A transformer riser structure, comprising a cylindrical body (1), wherein the upper end of the cylindrical body (1) is provided with an upper flange (2), characterized in that, The bottom surface of the upper flange (2) is provided with an air guide groove (3), one end of which is connected to the center hole of the upper flange (2). A sealing ring (4) is installed in the center hole of the upper flange (2), and the lower end face of the sealing ring (4) is not higher than the bottom surface of the air guide groove (3). The upper flange (2) is also provided with an air guide hole (5) that runs vertically through the upper flange, and the lower end of the air guide hole (5) is connected to the air guide groove (3).
2. The transformer riser structure according to claim 1, characterized in that, The top surface of the upper flange (2) is provided with an exhaust pipe (7), the axis of the exhaust pipe (7) is set horizontally, and the upper end of the air guide hole (5) is connected to the exhaust pipe (7).
3. The transformer riser structure according to claim 1, characterized in that, The center hole of the upper flange (2) is a stepped hole, and the large diameter section of the stepped hole is located on the upper surface of the upper flange (2). The sealing ring (4) is installed in the large diameter section.
4. The transformer riser structure according to claim 1, characterized in that, The sealing ring (4) comprises two semi-annular sealing ring units connected end to end.
5. The transformer riser structure according to claim 3, characterized in that, A porcelain sleeve (6) is installed on the upper flange (2). A porcelain sleeve core (6-1) is provided at the center of the bottom surface of the porcelain sleeve (6). The porcelain sleeve core (6-1) is inserted into the center hole of the upper flange. The bottom surface of the porcelain sleeve (6) presses at least part of the sealing ring (4) into the small diameter end of the center hole.
6. The transformer riser structure according to claim 1, characterized in that, The air guide groove (3) is arranged radially along the upper flange (2), and the air guide hole (5) is located at one end of the air guide groove (3) near the outer periphery of the upper flange.