Flow regulating mechanism of main transformer oil pump
Patent Information
- Application Number
- CN202522206415.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-10-20
AI Technical Summary
在低负荷工况下，变压器所需冷却量较小，固定流量的油泵仍以最大流量运行，导致电能浪费、油泵磨损加剧，并可能造成变压器过度冷却；而在高负荷工况下，固定的冷却流量可能无法提供最佳的散热效果，存在潜在安全隐患
该主变压器油泵的流量调节机构，通过温度传感器实时监测油温，并经由控制系统智能控制电机动作，驱动密封块调节流经固定板通口的油路比例，从而精确控制参与有效冷却的油量，在变压器低负荷油温较低时，自动减小有效流量，降低油泵的运行负载，实现显著的节能效果，在高负荷油温较高时，自动最大化有效流量，确保散热能力，保障变压器安全运行。
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Figure CN224745555U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of main transformer oil pump technology, specifically to a flow regulating mechanism for a main transformer oil pump. Background Technology
[0002] In power systems, the main transformer is a core piece of equipment, and its stable operation is crucial. Oil-immersed transformers generally employ a forced oil circulation cooling system, which uses an oil pump to drive the flow of insulating oil, carrying away the heat generated by the transformer windings and core, ensuring that their temperature remains within a safe range.
[0003] Currently, most main transformer oil pumps adopt a fixed flow rate design, and their output flow rate cannot be adjusted. However, the transformer load changes in real time with the electricity demand, and its heat generation also changes accordingly. Under low load conditions, the transformer requires less cooling, and the fixed flow rate oil pump still operates at its maximum flow rate, resulting in wasted energy, accelerated oil pump wear, and potential over-cooling of the transformer. Under high load conditions, the fixed cooling flow rate may not provide optimal heat dissipation, posing potential safety hazards. Therefore, a flow rate adjustment mechanism for the main transformer oil pump is proposed to solve the above problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a flow regulation mechanism for a main transformer oil pump, which has the advantages of achieving on-demand cooling and precise energy saving, thus solving the problems mentioned in the background technology.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A flow regulating mechanism for a main transformer oil pump includes a mounting frame, an oil tank fixedly connected to the inside of the mounting frame, and an oil pump fixedly connected to the top of the mounting frame. A temperature sensor is fixedly connected to the front of the oil tank, and a regulating component for regulating the flow is provided on the right side of the mounting frame. The adjustment assembly includes a transfer box fixedly connected to the right side of the mounting frame. A frame is fixedly connected to the right side of the transfer box, and a motor is fixedly connected to the right side of the frame. A transmission gear is fixedly connected to the output shaft of the motor. A driven gear meshes with the bottom of the transmission gear. A threaded shaft is fixedly connected to the inner side of the center of the driven gear. A threaded block is threadedly connected to the outer side of the threaded shaft. A connecting block is fixedly connected to the left side of the threaded block. A connecting plate is fixedly connected to the left side of the connecting block. A connecting shaft is fixedly connected to the top of the connecting plate. A sealing block is fixedly connected to the top of the connecting shaft.
[0006] Furthermore, a fixing plate is fixedly connected between the inner left and right side walls of the transfer box, and an opening adapted to the sealing block is provided on the inner side of the fixing plate.
[0007] Furthermore, the left side of the transfer box is fixedly connected to an oil suction pipe and a return pipe, and the other end of the oil suction pipe and the other end of the return pipe are both fixedly connected to the oil tank. The right side of the transfer box is fixedly connected to a connecting pipe, and the other end of the connecting pipe is fixedly connected to the oil suction end of the oil pump.
[0008] Furthermore, the oil extraction pipe is located above the fixed plate, and the return pipe is located below the fixed plate.
[0009] Furthermore, a fixing hole is provided at the bottom of the inner side of the transfer box, and a sleeve adapted to the connecting shaft is fixedly connected to the inner side of the fixing hole, and a sealing gasket is fixedly connected to the inner wall of the sleeve, and the connecting shaft is slidably connected to the inner side of the sleeve.
[0010] Furthermore, a sliding opening adapted to the connecting block is provided on the left side of the inner side of the frame, and the threaded shaft is rotatably connected between the inner top and bottom walls of the frame.
[0011] Furthermore, the oil pump's outlet end is fixedly connected to a circulation pipe, and the other end of the circulation pipe is fixedly connected to the oil tank.
[0012] Compared with the prior art, the present invention provides a flow regulating mechanism for a main transformer oil pump, which has the following advantages: The flow regulation mechanism of the main transformer oil pump monitors the oil temperature in real time through a temperature sensor and intelligently controls the motor to drive the sealing block to adjust the proportion of oil flowing through the fixed plate opening. This precisely controls the amount of oil participating in effective cooling. When the transformer is under low load and the oil temperature is low, the effective flow rate is automatically reduced to lower the operating load of the oil pump and achieve significant energy-saving effects. When the transformer is under high load and the oil temperature is high, the effective flow rate is automatically maximized to ensure heat dissipation capacity and ensure the safe operation of the transformer. Attached Figure Description
[0013] Figure 1 This is a cross-sectional view of the structure of this utility model; Figure 2 This is a front view of the structure of this utility model; Figure 3 This is a perspective view of the mounting frame in the structure of this utility model.
[0014] In the diagram: 1. Mounting frame; 2. Oil tank; 3. Oil pump; 4. Temperature sensor; 5. Transfer box; 6. Frame; 7. Motor; 8. Transmission gear; 9. Driven gear; 10. Threaded shaft; 11. Threaded block; 12. Connecting block; 13. Connecting plate; 14. Connecting shaft; 15. Sealing block; 16. Fixing plate; 17. Oil suction pipe; 18. Return pipe; 19. Connecting pipe; 20. Sleeve; 21. Circulation pipe. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figures 1 to 3 The flow regulation mechanism of a main transformer oil pump in this embodiment includes a mounting frame 1, an oil tank 2 fixedly connected to the inner side of the mounting frame 1, and an oil pump 3 fixedly connected to the top of the mounting frame 1. A temperature sensor 4 is fixedly connected to the front of the oil tank 2, and a regulating component for regulating the flow is provided on the right side of the mounting frame 1.
[0017] Please see Figure 1 In this embodiment, the adjustment component includes a transfer box 5 fixedly connected to the right side of the mounting frame 1. A frame 6 is fixedly connected to the right side of the transfer box 5. A motor 7 is fixedly connected to the right side of the frame 6. A transmission gear 8 is fixedly connected to the output shaft of the motor 7. A driven gear 9 meshes with the bottom of the transmission gear 8. A threaded shaft 10 is fixedly connected to the inner side of the center of the driven gear 9. A threaded block 11 is threadedly connected to the outer side of the threaded shaft 10. A connecting block 12 is fixedly connected to the left side of the threaded block 11. A connecting plate 13 is fixedly connected to the left side of the connecting block 12. A connecting shaft 14 is fixedly connected to the top of the connecting plate 13. A sealing block 15 is fixedly connected to the top of the connecting shaft 14.
[0018] Specifically, a fixing plate 16 is fixedly connected between the inner left and right side walls of the transfer box 5, and an opening adapted to the sealing block 15 is provided on the inner side of the fixing plate 16.
[0019] It should be noted that when the sealing block 15 is fully seated on the opening, a reliable seal can be achieved, cutting off the oil passage between the upper and lower chambers.
[0020] Specifically, the left side of the transfer box 5 is fixedly connected to an oil suction pipe 17 and a return pipe 18, and the other end of the oil suction pipe 17 and the other end of the return pipe 18 are fixedly connected to the oil tank 2. The right side of the transfer box 5 is fixedly connected to a connecting pipe 19, and the other end of the connecting pipe 19 is fixedly connected to the oil suction end of the oil pump 3.
[0021] Specifically, the sucker pipe 17 is located above the fixed plate 16, and the return pipe 18 is located below the fixed plate 16.
[0022] Specifically, a fixing hole is provided at the bottom of the inner side of the transfer box 5, and a sleeve 20 adapted to the connecting shaft 14 is fixedly connected to the inner side of the fixing hole, and a sealing gasket is fixedly connected to the inner wall of the sleeve 20, and the connecting shaft 14 is slidably connected to the inner side of the sleeve 20.
[0023] It should be noted that the sleeve 20 serves as a guide and sealing seat for the connecting shaft 14. The sealing gasket on its inner side can effectively prevent the oil in the transfer box 5 from leaking out of the box through the sliding gap of the connecting shaft 14, while ensuring that the connecting shaft 14 can move up and down flexibly.
[0024] Specifically, a sliding opening adapted to the connecting block 12 is provided on the left side of the inner side of the frame 6, and the threaded shaft 10 is rotatably connected between the inner top and bottom walls of the frame 6.
[0025] Specifically, the oil pump 3 is fixedly connected to the oil outlet end of a circulation pipe 21, and the other end of the circulation pipe 21 is fixedly connected to the oil tank 2.
[0026] The working principle of the above embodiments is as follows: Temperature sensor 4, installed on the front of oil tank 2, monitors the temperature of transformer insulating oil in real time and transmits the temperature signal to an external control system. The control system compares and calculates the received oil temperature signal with a preset temperature threshold. If it is determined that the flow rate of oil pump 3 needs to be adjusted, such as increasing the flow rate if the oil temperature is higher than the upper limit or decreasing the flow rate if the oil temperature is lower than the lower limit, the control system will send corresponding start, direction and speed control commands to motor 7. After receiving the command, the output shaft of motor 7 starts to rotate, driving the transmission gear 8 fixed on it to rotate. The transmission gear 8 meshes with the driven gear 9 and transmits power to the driven gear 9, thereby driving the threaded shaft 10, which is fixed to the center of the driven gear 9, to rotate synchronously. The threaded block 11, which is threaded to the threaded shaft 10, converts the rotational motion of the threaded shaft 10 into its own vertical linear motion when the connecting block 12 is constrained by the sliding opening of the frame 6 and cannot rotate. The threaded block 11 drives the connecting plate 13, the connecting shaft 14 and the sealing block 15 fixed to the top of the connecting shaft 14 to make vertical displacement together through the connecting block 12. When it is necessary to reduce the flow rate, the motor 7 drives the sealing block 15 to move upward, increasing the opening between the sealing block 15 and the opening of the fixed plate 16, so that a part of the oil flows back to the oil tank 2 through the return pipe 18. The effective flow rate for cooling will be relatively reduced, reducing unnecessary cooling intensity and achieving energy saving. When an increase in flow is required, the motor 7 drives the sealing block 15 to move downward until the opening is closed, so that all the oil drawn by the oil pump 3 enters the circulation pipe 21 and flows through the transformer body for effective heat dissipation, thereby maximizing the cooling effect and ensuring the safe operation of the transformer.
[0027] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.
[0028] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A flow regulating mechanism for a main transformer oil pump, comprising a mounting frame (1), an oil tank (2) fixedly connected to the inner side of the mounting frame (1), and an oil pump (3) fixedly connected to the top of the mounting frame (1), characterized in that: A temperature sensor (4) is fixedly connected to the front of the oil tank (2), and an adjustment component for adjusting the flow rate is provided on the right side of the mounting frame (1). The adjustment assembly includes a transfer box (5) fixedly connected to the right side of the mounting frame (1). A frame (6) is fixedly connected to the right side of the transfer box (5). A motor (7) is fixedly connected to the right side of the frame (6). A transmission gear (8) is fixedly connected to the output shaft of the motor (7). A driven gear (9) meshes with the bottom of the transmission gear (8). A threaded shaft (10) is fixedly connected to the inner side of the center of the driven gear (9). A threaded block (11) is threadedly connected to the outer side of the threaded shaft (10). A connecting block (12) is fixedly connected to the left side of the threaded block (11). A connecting plate (13) is fixedly connected to the left side of the connecting block (12). A connecting shaft (14) is fixedly connected to the top of the connecting plate (13). A sealing block (15) is fixedly connected to the top of the connecting shaft (14).
2. The flow regulating mechanism of a main transformer oil pump according to claim 1, characterized in that: A fixing plate (16) is fixedly connected between the inner left and right side walls of the transfer box (5), and an opening adapted to the sealing block (15) is opened on the inner side of the fixing plate (16).
3. The flow regulating mechanism of a main transformer oil pump according to claim 1, characterized in that: The left side of the transfer box (5) is fixedly connected to an oil extraction pipe (17) and a return pipe (18), and the other end of the oil extraction pipe (17) and the other end of the return pipe (18) are fixedly connected to the oil tank (2). The right side of the transfer box (5) is fixedly connected to a connecting pipe (19), and the other end of the connecting pipe (19) is fixedly connected to the oil suction end of the oil pump (3).
4. The flow regulating mechanism of a main transformer oil pump according to claim 3, characterized in that: The oil extraction pipe (17) is located above the fixed plate (16), and the return pipe (18) is located below the fixed plate (16).
5. The flow regulating mechanism of a main transformer oil pump according to claim 1, characterized in that: The bottom of the inner side of the transfer box (5) is provided with a fixing hole, and a sleeve (20) that is compatible with the connecting shaft (14) is fixedly connected to the inner side of the fixing hole. A sealing gasket is fixedly connected to the inner side wall of the sleeve (20), and the connecting shaft (14) is slidably connected to the inner side of the sleeve (20).
6. The flow regulating mechanism of a main transformer oil pump according to claim 1, characterized in that: The left side of the inner side of the frame (6) is provided with a sliding opening that is compatible with the connecting block (12), and the threaded shaft (10) is rotatably connected between the inner top and bottom walls of the frame (6).
7. The flow regulating mechanism of a main transformer oil pump according to claim 1, characterized in that: The oil pump (3) has a circulation pipe (21) fixedly connected to its outlet end, and the other end of the circulation pipe (21) is fixedly connected to the oil tank (2).