Metal corrugated oil tank with helical guide fins and siphon action box

Abstract

The utility model provides a metal corrugated oil storage cabinet with spiral flow guide fin and siphon effect box belongs to electric power equipment oil storage device technical field, including the oil storage cabinet body, is enclosed cavity by the corrugated sheet subassembly of axial telescopic, oil level meter, oil inlet, oil outlet all are connected outside electric power equipment oil tank through oil way, the inner wall of oil way is equipped with 3 4 piece spiral flow guide fin, spiral angle 30 45, the siphon effect box is installed between oil inlet and oil way, has the baffle and divides upper and lower chambers, the upper chamber is connected with the exhaust pipe of one way valve, the baffle is equipped with the air hole. This structure can guide the oil liquid spiral flow and improve the oil speed, and the discharged oil way gas eliminates the false oil level, and is easy to transform, and the reliability is high.

Description

Technical Field

[0001] This utility model relates to the technical field of oil storage devices for power equipment, and in particular to a metal corrugated oil tank with spiral guide fins and a siphon box. Background Technology

[0002] Metal corrugated oil conservators are core oil storage devices for power equipment such as transformers and reactors. Their main function is to balance the volume fluctuations of insulating oil inside the equipment caused by temperature changes, and their performance directly determines the operational reliability of the power equipment.

[0003] However, traditional corrugated metal oil conservators have two major drawbacks in practical applications: First, false oil level readings are common. Due to unreasonable internal oil channel design, air blockage easily occurs during oil flow, and incomplete oil-air separation leads to a discrepancy between the oil level gauge reading and the actual oil level. False oil levels can mislead maintenance personnel's judgment of the equipment's oil condition, potentially causing problems such as improper oil replenishment, which in turn affects the equipment's insulation performance and service life. Second, the oil flow rate is slow. Traditional oil conservators often have straight-cylinder oil channels, resulting in high oil flow resistance. When there are significant temperature changes in the equipment, the volume change of the insulating oil cannot be quickly compensated for, which may cause abnormal internal pressure and affect the normal operation of the equipment.

[0004] To address the aforementioned issues, existing technologies have employed improvements such as adding vent valves or increasing the diameter of oil passages. However, adding vent valves has limited venting effect and requires regular maintenance, while increasing the diameter of oil passages significantly increases the overall volume of the oil tank. Neither approach can fundamentally address the need to eliminate false oil levels and improve oil flow velocity. Therefore, there is an urgent need for a structurally optimized and reliable corrugated metal oil tank to overcome the shortcomings of existing technologies. Utility Model Content

[0005] This utility model provides a corrugated metal oil tank with spiral guide fins and a siphon box, which overcomes the defects of existing corrugated metal oil tanks such as false oil level and slow oil flow rate. By adding spiral guide fins and a siphon box, the system can eliminate false oil level and increase oil flow rate, thereby improving the performance and reliability of the oil tank.

[0006] This utility model provides a corrugated metal oil tank with spiral guide fins and a siphon box, comprising:

[0007] The oil tank body is enclosed by a corrugated sheet assembly, which can expand and contract axially with changes in the volume of the oil to accommodate fluctuations in the volume of the insulating oil.

[0008] An oil level gauge is fixedly installed on the outer wall of the oil tank body and communicates with the closed cavity of the oil tank body to display the oil level in the cavity in real time.

[0009] The oil inlet and oil outlet are symmetrically located on both sides of the oil tank body, and both the oil inlet and oil outlet are connected to the oil tank of the external power equipment through oil passages to form an oil flow loop.

[0010] Spiral guide fins are evenly distributed along the axial direction of the oil passage on the inner wall of the oil passage and are fixedly connected to the inner wall of the oil passage. They are used to guide the oil to form a spiral flow in the oil passage to reduce flow resistance.

[0011] The siphon box is fixedly installed on the oil passage of the oil inlet. It has a horizontal partition inside, which divides the interior of the siphon box into an independent upper chamber and a lower chamber.

[0012] According to the present invention, a metal corrugated oil tank with spiral guide fins and a siphon box is provided. The number of spiral guide fins is 3-4, the height is 1 / 5-1 / 4 of the inner diameter of the oil passage, and the spiral angle is 30°-45°.

[0013] According to the present invention, a metal corrugated oil tank with spiral guide fins and siphon box is provided. The lower chamber of the siphon box is connected to the inside of the oil passage through an oil suction pipe, and the upper chamber is connected to the outside atmosphere through an exhaust pipe. A one-way valve is connected in series on the exhaust pipe. Multiple vent holes are evenly opened on the partition to achieve air pressure balance between the upper and lower chambers.

[0014] According to the present invention, a metal corrugated oil tank with spiral guide fins and a siphon box is provided. The lower cavity of the siphon box is fitted with an oil-resistant nitrile rubber sealing gasket at the connection between it and the oil suction pipe. The compression of the sealing gasket is 15%-20% of its original thickness to enhance the sealing performance and prevent oil leakage.

[0015] According to the present invention, a metal corrugated oil tank with spiral guide fins and a siphon box is provided. The outer surface of the spiral guide fins is coated with a polytetrafluoroethylene anti-corrosion coating to improve its resistance to insulating oil corrosion and extend its service life.

[0016] This utility model provides a metal corrugated oil tank with spiral guide fins and siphon box. Through targeted structural design, it effectively solves the core defects of traditional oil tanks and has multi-dimensional performance improvement.

[0017] The inner wall of the oil channel is uniformly arranged with 3-4 spiral guide fins along the axial direction. The height of the fins matches 1 / 5-1 / 4 of the inner diameter of the oil channel, and the spiral angle is controlled at 30°-45°. This can accurately guide the oil to form a spiral flow in the oil channel, greatly reducing the oil flow resistance. Compared with the traditional straight cylinder oil channel, it significantly improves the oil flow velocity, ensuring that the filling or draining of insulating oil can be completed quickly when the volume changes.

[0018] The siphon box, installed at the connection between the oil inlet and the oil passage, is divided into an upper and lower chamber by an internal horizontal partition. The lower chamber is connected to the oil passage via a suction pipe, while the upper chamber is connected to the atmosphere via a vent pipe with a one-way valve. Vent holes in the partition ensure pressure balance between the upper and lower chambers, efficiently drawing gas from the oil passage into the lower chamber, then expelling it through the vent holes into the upper chamber, completely eliminating air blockage and ensuring the oil level gauge accurately reflects the actual oil level. Furthermore, the oil-resistant nitrile rubber sealing gasket at the connection between the lower chamber of the siphon box and the suction pipe effectively prevents oil leakage and improves sealing reliability. The PTFE anti-corrosion coating on the outer surface of the spiral guide fins enhances their resistance to insulating oil corrosion, extending component lifespan. The overall structure requires no major modifications to the existing oil tank, resulting in lower costs, ease of implementation, and significantly improved operational stability and practical value of the oil tank. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the metal corrugated oil tank with spiral guide fins and siphon box provided by this utility model.

[0021] Figure 2 This is a schematic diagram of the siphon box provided by this utility model.

[0022] Attached reference numerals: 1. Oil tank body; 2. Oil level gauge; 3. Oil inlet; 4. Oil outlet; 5. Oil passage; 6. Spiral guide fins; 7. Siphon box; 8. Baffle; 9. Exhaust pipe; 10. Check valve. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. 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.

[0027] This application embodiment provides a metal corrugated oil tank with spiral guide fins 6 and a siphon box 7, including:

[0028] The oil tank body 1 is a closed cavity formed by a corrugated sheet assembly. The corrugated sheet assembly can expand and contract axially with the change of oil volume to adapt to the volume fluctuation of the insulating oil.

[0029] Oil level gauge 2 is fixedly installed on the outer wall of the oil tank body 1 and communicates with the closed cavity of the oil tank body 1 to display the oil level in the cavity in real time.

[0030] Oil inlet 3 and oil outlet 4 are symmetrically arranged on both sides of the oil tank body 1, and both oil inlet 3 and oil outlet 4 are connected to the oil tank of external power equipment through oil passage 5 to form an oil flow circuit.

[0031] Spiral guide fins 6 are evenly distributed along the axial direction of the oil passage 5 on the inner wall of the oil passage 5 and are fixedly connected to the inner wall of the oil passage 5. They are used to guide the oil to form a spiral flow in the oil passage 5 to reduce flow resistance. The number of spiral guide fins 6 is 3-4, the height is 1 / 5-1 / 4 of the inner diameter of the oil passage 5, and the spiral angle is 30°-45°.

[0032] The siphon box 7 is fixedly installed at the connection between the oil inlet 3 and the oil passage 5. It has a horizontal partition 8 inside, which divides the interior of the siphon box 7 into an independent upper chamber and a lower chamber.

[0033] The lower chamber of the siphon box 7 is connected to the interior of the oil passage 5 through the oil suction pipe, and the upper chamber is connected to the outside atmosphere through the exhaust pipe 9. A one-way valve 10 is connected in series on the exhaust pipe 9. Multiple vent holes are evenly opened on the partition plate 8 to achieve air pressure balance between the upper and lower chambers.

[0034] To further optimize the above technical solution, an oil-resistant nitrile rubber sealing gasket is fitted at the connection between the lower cavity of the siphon box 7 and the oil suction pipe, and the compression of the sealing gasket is 15%-20% of its original thickness, so as to enhance the sealing performance and prevent oil leakage.

[0035] To further optimize the above technical solution, the outer surface of the spiral guide fin 6 is coated with a polytetrafluoroethylene anti-corrosion coating to improve its resistance to insulating oil corrosion and extend its service life.

[0036] Working principle: The operation of this metal corrugated oil tank is based on the synergistic mechanism of adapting to changes in oil volume and eliminating air blockage. The tank body 1 is a closed cavity formed by corrugated sheet assemblies, which can extend and retract axially to adapt to the volume fluctuations of the insulating oil. The oil level gauge 2 is fixedly installed on the outer wall of the tank body 1 and communicates with the closed cavity to display the oil level in the cavity in real time. The oil inlet 3 and oil outlet 4 are symmetrically arranged on the two end walls of the tank body 1, and are connected to the oil tank of external power equipment through the oil passage 5 to form a complete oil flow circuit. When the oil temperature rises during the operation of the power equipment, the insulating oil expands in volume due to heat. The oil flows from the oil inlet 3 into the oil passage 5. At this time, the spiral guide fins 6 in the oil passage 5 guide the oil to form a spiral flow according to their specific spiral angle and height, effectively reducing the flow resistance and allowing the oil to quickly enter the oil tank body 1. At the same time, the gas generated by the oil flow in the oil passage 5 is sucked into the lower chamber of the siphon box 7 through the oil suction pipe. Since the vent on the partition 8 balances the air pressure between the upper and lower chambers, the gas smoothly enters the upper chamber and is discharged through the one-way valve 10 on the exhaust pipe 9 (the one-way valve 10 can prevent outside air from entering in reverse), avoiding the formation of air blockage in the oil passage 5 and ensuring that the oil level gauge 2 can accurately display the oil level. When the oil temperature decreases, the volume of insulating oil shrinks. Under the expansion and contraction force of the corrugated sheet assembly, the oil in the oil tank body 1 flows back to the power equipment oil tank through the oil channel 5. During this process, the spiral guide fins 6 continue to guide the spiral flow of the oil, reducing the return resistance to ensure the return speed. The siphon box 7 continuously discharges any residual or newly generated gas in the oil channel 5, keeping the oil channel 5 unobstructed. Ultimately, the internal pressure of the power equipment is stabilized, and the dynamic balance of the insulating oil volume change is achieved, while completely solving the problem of false oil level.

[0037] Therefore, it can be seen that the metal corrugated oil tank with spiral guide fins and siphon box provided by this utility model effectively solves the core defects of traditional oil tanks through targeted structural design, and at the same time has multi-dimensional performance improvement.

[0038] The inner wall of the oil channel is uniformly arranged with 3-4 spiral guide fins along the axial direction. The height of the fins matches 1 / 5-1 / 4 of the inner diameter of the oil channel, and the spiral angle is controlled at 30°-45°. This can accurately guide the oil to form a spiral flow in the oil channel, greatly reducing the oil flow resistance. Compared with the traditional straight cylinder oil channel, it significantly improves the oil flow velocity, ensuring that the filling or draining of insulating oil can be completed quickly when the volume changes.

[0039] The siphon box, installed at the connection between the oil inlet and the oil passage, is divided into an upper and lower chamber by an internal horizontal partition. The lower chamber is connected to the oil passage via a suction pipe, while the upper chamber is connected to the atmosphere via a vent pipe with a one-way valve. Vent holes in the partition ensure pressure balance between the upper and lower chambers, efficiently drawing gas from the oil passage into the lower chamber, then expelling it through the vent holes into the upper chamber, completely eliminating air blockage and ensuring the oil level gauge accurately reflects the actual oil level. Furthermore, the oil-resistant nitrile rubber sealing gasket at the connection between the lower chamber of the siphon box and the suction pipe effectively prevents oil leakage and improves sealing reliability. The PTFE anti-corrosion coating on the outer surface of the spiral guide fins enhances their resistance to insulating oil corrosion, extending component lifespan. The overall structure requires no major modifications to the existing oil tank, resulting in lower costs, ease of implementation, and significantly improved operational stability and practical value of the oil tank.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A corrugated metal oil tank with spiral guide fins and a siphon action box, characterized in that, include: The oil tank body is enclosed by a corrugated sheet assembly, which can expand and contract axially with changes in the volume of the oil to accommodate fluctuations in the volume of the insulating oil. An oil level gauge is fixedly installed on the outer wall of the oil tank body and communicates with the closed cavity of the oil tank body to display the oil level in the cavity in real time. The oil inlet and oil outlet are symmetrically located on both sides of the oil tank body, and both the oil inlet and oil outlet are connected to the oil tank of the external power equipment through oil passages to form an oil flow loop. Spiral guide fins are evenly distributed along the axial direction of the oil passage on the inner wall of the oil passage and are fixedly connected to the inner wall of the oil passage. They are used to guide the oil to form a spiral flow in the oil passage to reduce flow resistance. The siphon box is fixedly installed on the oil passage of the oil inlet. It has a horizontal partition inside, which divides the interior of the siphon box into an independent upper chamber and a lower chamber.

2. A corrugated metal oil tank with spiral guide fins and a siphon action box according to claim 1, characterized in that, The number of spiral guide fins is 3-4, the height is 1 / 5-1 / 4 of the inner diameter of the oil passage, and the spiral angle is 30°-45°.

3. A corrugated metal oil tank with spiral guide fins and a siphon box according to claim 1, characterized in that, The lower chamber of the siphon box is connected to the inside of the oil passage through the oil suction pipe, and the upper chamber is connected to the outside atmosphere through the exhaust pipe, and a one-way valve is connected in series on the exhaust pipe; multiple vent holes are evenly opened on the partition to achieve air pressure balance between the upper and lower chambers.

4. A corrugated metal oil tank with spiral guide fins and a siphon action box according to claim 1, characterized in that, The lower cavity of the siphon box is fitted with an oil-resistant nitrile rubber sealing gasket at the connection between it and the oil suction pipe. The compression of the sealing gasket is 15%-20% of its original thickness to enhance the sealing performance and prevent oil leakage.

5. A corrugated metal oil tank with spiral guide fins and a siphon box according to claim 1, characterized in that, The outer surface of the spiral guide fin is coated with a polytetrafluoroethylene anti-corrosion coating to improve its resistance to insulating oil corrosion and extend its service life.

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