Movable transformer on-load switch oil tank device
By designing a portable transformer on-load switch oil tank device that integrates multifunctional components, the safety risks and time-consuming nature of traditional inspection methods are solved, enabling convenient transformer oil treatment and improving the safety and efficiency of substation maintenance.
Patent Information
- Application Number
- CN202520384149.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Traditional on-load switch inspection methods require large cranes for lifting, which poses safety risks, and the oil sample analysis process is time-consuming, affecting accuracy.
Design a portable transformer on-load switch oil tank device, integrating a horizontal oil tank body, casters, rotating handle, oil filling pipe, oil drain pipe, lifting lugs and other multi-functional components to achieve convenient movement and multiple operations, such as oil filling, vacuuming, circulating heating and oil filtration.
It improves the safety and efficiency of the inspection process, reduces transportation and operating costs, ensures the accuracy of oil samples, and is suitable for the maintenance of transformer switches in substations.
Smart Images
Figure CN223842722U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of transformer on-load switch maintenance equipment, specifically to a portable transformer on-load switch oil tank device. Background Technology
[0002] In power systems, transformers, as core equipment for energy conversion and transmission, are crucial for ensuring grid security through stable operation. As transformers age, regular maintenance and inspection of the transformers and their critical components become essential to ensure their continued reliable operation. On-load tap changers, a key component of the transformer, are responsible for adjusting the transformer's taps without power interruption, thereby maintaining stable output voltage. However, on-load tap changers may malfunction during operation due to oil deterioration, moisture intrusion, or mechanical wear, affecting the overall performance and safety of the transformer.
[0003] Traditional on-load switch inspection methods involve on-site core lifting operations. This process not only requires the use of large cranes, increasing the complexity of the operation, but also poses high safety risks, especially in high-voltage environments like power plants, where crane operations can easily lead to electric shocks and other accidents, classifying it as a medium-risk operation. Furthermore, the transformer oil sampled from the on-load switch cylinder needs to be sent to a laboratory for analysis. This process is not only time-consuming, but the accuracy of the oil sample may also be affected by changes in conditions during transportation. Utility Model Content
[0004] The purpose of this invention is to provide a portable transformer on-load switch oil tank device to address the technical deficiencies mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A portable transformer on-load switch oil tank device includes a horizontally placed oil tank body, and front and rear casters located at the bottom of the oil tank body. A rotating handle is provided on the front side of the oil tank body in the direction of movement, and the lower end of the rotating handle is connected to the front caster. A detachable sealing cover is provided on the front opening of the oil tank body in the direction of movement, and a cover plate is provided on the cover plate. An oil injection pipe is connected to the oil injection pipe, which is equipped with a vacuum nozzle and an oil injection port. The vacuum nozzle is connected to an external vacuum pipe, and the oil injection port is used for injecting oil into the transformer. An oil drain pipe is provided at the bottom of the oil tank body, which is used to inject the oil in the oil tank body into the transformer switch tank, and can also cooperate with the oil injection port for circulating heating and oil filtration.
[0007] Furthermore, the top surface of the oil tank body is provided with several lifting lugs at intervals to facilitate transportation.
[0008] Furthermore, an oil level inspection window is provided on the front side of the oil tank body. The oil level inspection window includes transparent glass and a rear clamping flange and a front clamping flange clamped on the front and rear sides of the transparent glass. A sealing ring is provided between the transparent glass and the clamping flange and the front clamping flange. The rear clamping flange is integrally formed with the oil tank body.
[0009] Furthermore, the top of the oil tank body is provided with an exhaust plug for venting the oil tank.
[0010] Furthermore, a vacuum pressure gauge is provided on the top of the oil tank body to display the vacuum level and pressure inside the oil tank.
[0011] Furthermore, a rear pusher is provided on the rear side of the oil tank body in the direction of movement.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] This portable transformer on-load switch oil tank device integrates a horizontal oil tank body, front and rear casters, a rotating handle, a removable cover, an oil filling pipe (including a vacuum nozzle and an oil filling port), an oil drain pipe, lifting lugs, an oil level inspection window, an exhaust plug, a vacuum pressure gauge, and a rear push handle, among other multi-functional components. It not only facilitates movement and transportation but also enables multiple operations such as oil filling, vacuuming, circulating heating and filtering, oil level observation, venting, and vacuum and pressure monitoring. This invention effectively solves the problem of transformer oil requirements during on-load switch core inspection. Its compact size facilitates transportation and movement, saves costs, and is widely used in field maintenance of transformer switches in various substations, meeting construction needs, offering ease of use, and promising broad application prospects. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 for Figure 1 Schematic diagram of cross-section along the AA direction. Detailed Implementation
[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0021] like Figure 1-2As shown, a portable transformer on-load switch oil tank device includes a horizontally placed oil tank body 1, and front casters 2 and rear casters 3 located at the bottom of the oil tank body 1. A rotating handle 4 is provided on the front side of the oil tank body 1 in the direction of movement. The lower end of the rotating handle 4 is connected to the front casters 2. A cover plate 11 is provided on the detachable sealing cover of the front opening of the oil tank body 1 in the direction of movement. An oil injection pipe 5 is connected to the cover plate 11. A vacuum nozzle 6 and an oil injection port 7 are provided on the oil injection pipe 5. The vacuum nozzle 6 is connected to an external vacuum pipe. The oil injection port is used for injecting oil into the transformer. An oil drain pipe 12 is provided at the bottom of the oil tank body 1. The oil drain pipe 12 is used to inject the oil in the oil tank body into the transformer switch tank. At the same time, it can cooperate with the oil injection port 7 to perform circulating heating and oil filtration.
[0022] The device is moved by front casters 2 and rear casters 3 located at the bottom. The operator can push or pull the entire device by turning the rotating handle 4 located on the front side of the oil tank body 1 in the direction of movement. Since the lower end of the rotating handle 4 is connected to the front casters 2, this helps to provide a stable direction of push or pull.
[0023] When it is necessary to add oil to the transformer, the interior of the oil tank body 1 is first accessed through the cover plate 11, which is opened by the removable sealing cover.
[0024] Oil injection pipe 5 is connected to an external oil source, and oil is injected into the oil tank body 1 through oil injection port 7. The vacuum nozzle 6 installed on oil injection pipe 5 is connected to an external vacuum pipe, which can perform vacuum treatment on oil tank body 1 before oil injection to remove air and moisture, ensuring the purity of oil and normal operation of transformer.
[0025] When oil needs to be circulated, heated, and filtered, the drain pipe 12 can be used. The drain pipe 12 is not only used to inject the oil in the oil tank body 1 into the transformer switch bucket, but can also work in conjunction with the oil inlet 7.
[0026] Through a specific circulating heating and filtration system, oil can be drawn from the drain pipe 12, heated and filtered, and then reinjected into the oil tank body 1 through the oil inlet 7. This process helps remove impurities and moisture from the oil, improving oil quality and transformer operating efficiency.
[0027] After completing the oil filling or circulating heating and filtering operation, the cover plate 11 needs to be closed and sealed to ensure the airtightness of the oil tank body 1 and prevent external contaminants from entering or internal oil from leaking.
[0028] Specifically, as shown in the figure, the top surface of the oil tank body 1 is provided with several lifting lugs 10 at intervals to facilitate transportation. The lifting lugs 10 are mainly used to lift the oil tank and load and unload vehicles.
[0029] Specifically, as shown in the figure, an oil level inspection window 9 is provided on the front side of the oil tank body 1. The oil level inspection window 9 includes a transparent glass 93 and a rear clamping flange 91 and a front clamping flange 92 clamped on the front and rear sides of the transparent glass 93. A sealing ring 94 is provided between the transparent glass 93 and the clamping flange 91 and the front clamping flange 92. The rear clamping flange 91 is integrally formed with the oil tank body 1.
[0030] When the tank body 1 is filled with oil, the operator can clearly observe the oil level through the oil level inspection window 9. The transparency of the transparent glass 93 makes the observation of the oil level intuitive and accurate.
[0031] The elastic material properties of the sealing ring 94 ensure the sealing performance of the inspection window. When the internal pressure of the oil tank or the external temperature changes, the sealing ring 94 can adapt to these changes, maintaining the sealing effect of the inspection window and preventing oil leakage or the entry of external gases.
[0032] The front and rear clamping flanges 91 and 92 securely hold the transparent glass 93 in the middle via a fastening connection (such as a bolt connection), ensuring the stability and durability of the viewing window structure. This clamping method not only provides sufficient support but also prevents the transparent glass 93 from breaking due to pressure or temperature changes.
[0033] Specifically, as shown in the figure, the top of the oil tank body 1 is provided with a vent plug 8 for venting the oil tank. It is used for venting the oil tank and can also be used for filling oil into the top of the oil tank.
[0034] Specifically, as shown in the figure, a vacuum pressure gauge 13 is provided on the top of the oil tank body 1 to display the vacuum level and pressure inside the oil tank.
[0035] Specifically, as shown in the figure, a rear pusher 14 is provided on the rear side of the oil tank body 1 in the direction of movement. This is used by workers to push the oil tank from behind.
[0036] The oil tank is designed with a certain slope and is mainly used to store transformer oil. It is vacuum filtered inside the oil tank, and after the oil sample is qualified, it is injected into the on-load switch cylinder.
[0037] Specifically, the specific implementation process of this utility model is as follows:
[0038] The construction of the portable on-load switch oil tank device is simple, and the construction steps are as follows: At the start of construction, the transformer oil is injected into the oil tank through the oil inlet until the entire oil tank is filled → The oil tank is lifted onto the truck using the lifting lugs → The truck is unloaded after arriving at the power station → The portable oil tank is pulled to the transformer bay to be repaired using the rotatable front handle → The oil in the tank is used to clean the switch core through the oil drain port at the bottom of the tank, and then the dirty transformer oil is pumped out. Finally, the oil in the tank is injected into the switch cylinder → If the transformer oil is not up to standard, the transformer oil in the tank is vacuum filtered, and an oil sample is taken. After the sample is qualified, it is injected into the transformer on-load switch cylinder.
[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A portable transformer on-load switch oil tank device, characterized in that, The system includes a horizontally placed oil tank body (1), and front casters (2) and rear casters (3) located at the bottom of the oil tank body (1). A rotating handle (4) is provided on the front side of the oil tank body (1) in the direction of movement. The lower end of the rotating handle (4) is connected to the front caster (2). A cover plate (11) is provided on the detachable sealing cover of the front opening of the oil tank body (1) in the direction of movement. An oil injection pipe (5) is connected to the cover plate (11). A vacuum nozzle (6) and an oil injection port (7) are provided on the oil injection pipe (5). The vacuum nozzle (6) is connected to an external vacuum pipe. The oil injection port is used for transformer oil injection. An oil drain pipe (12) is provided at the bottom of the oil tank body (1). The oil drain pipe (12) is used to inject the oil in the oil tank body into the transformer switch barrel. At the same time, it can cooperate with the oil injection port (7) to perform circulating heating and oil filtration.
2. The portable transformer on-load switch oil tank device according to claim 1, characterized in that, The top surface of the oil tank body (1) is provided with several lifting lugs (10) for easy transportation.
3. The portable transformer on-load switch oil tank device according to claim 1, characterized in that, The oil tank body (1) is provided with an oil level inspection window (9) on the front side. The oil level inspection window (9) includes a transparent glass (93) and a rear clamping flange (91) and a front clamping flange (92) clamped on the front and rear sides of the transparent glass (93). A sealing ring (94) is provided between the transparent glass (93) and the clamping flange (91) and the front clamping flange (92). The rear clamping flange (91) is integrally formed with the oil tank body (1).
4. The portable transformer on-load switch oil tank device according to claim 1, characterized in that, The top of the oil tank body (1) is provided with an exhaust plug (8) for venting the oil tank.
5. The portable transformer on-load switch oil tank device according to claim 1, characterized in that, The top of the oil tank body (1) is equipped with a vacuum pressure gauge (13) for displaying the vacuum level and pressure inside the oil tank.
6. The portable transformer on-load switch oil tank device according to claim 1, characterized in that, A rear pusher (14) is provided on the rear side of the oil tank body (1) in the direction of movement.