External oil vertical metal corrugated oil tank

Abstract

The utility model provides a kind of outer oil vertical metal corrugated oil tank, it includes oil tank corrugated core, independently arranged breathing cavity, oil level meter that is integrally installed in breathing cavity to realize oil isolation and can be independently disassembled, with adaptive wheel groove and antiskid wear-resistant coating's guide variable ratio wheel, and through detachable connecting piece and movable end connection's steel wire rope, breathing cavity inner wall is along the height extension's guide slide rail, movable end is matched with slide block cooperation.Working, transformer oil volume change drives movable end displacement, traction steel wire rope drives guide variable ratio wheel rotation, and then drive oil level meter to realize oil level indication.The oil tank of the utility model can overhaul oil level meter without draining oil, and the oil level indication precision is high, can be preloaded after debugging and overall delivery, installation and maintenance are convenient, effectively prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of oil storage devices for power equipment, and in particular to an external oil vertical corrugated metal oil storage tank. Background Technology

[0002] Currently, the mainstream vertical oil tank level gauges on the market are mainly divided into two types: disc float level gauges and magnetic flip level gauges. Disc float level gauges rely on changes in oil level to drive the float to rise and fall, which in turn drives the swing arm to rotate to indicate the oil level. Magnetic flip level gauges, on the other hand, use the magnet inside the oil tank to move with the oil level, driving the external magnetic flip plate to rotate and display the oil level.

[0003] However, both types of oil level gauges have key drawbacks: their core components are in direct contact with transformer oil. When the oil level gauge malfunctions and needs repair or replacement, the transformer oil in the tank must be completely emptied first. This not only significantly increases the difficulty and time cost of after-sales operation but may also cause oil waste and contamination. At the same time, the disc float type oil level gauge is limited by its structure and cannot be pre-installed and debugged before shipment. It requires on-site installation and debugging, and the accuracy of the float's movement is easily affected by oil flow, further affecting the accuracy of oil level monitoring. These shortcomings of existing technologies directly restrict the operation and maintenance efficiency and operational stability of power equipment. There is an urgent need for an oil tank structure that can completely isolate the oil level gauge from the transformer oil and facilitate repair and maintenance. Utility Model Content

[0004] This utility model provides an externally mounted vertical corrugated metal oil storage tank to overcome the deficiencies in the prior art.

[0005] This utility model provides an external oil vertical metal corrugated oil tank, including an oil tank corrugated core, a breathing chamber, an oil level gauge, a guide ratio wheel, and a steel wire rope;

[0006] The breathing chamber is independently located on one side of the corrugated core of the oil conservator, and the breathing chamber is equipped with a movable end that can move synchronously with the change in the volume of transformer oil in the corrugated core of the oil conservator.

[0007] The oil level gauge is installed on the breathing chamber to completely isolate the oil level gauge from the transformer oil contained in the corrugated core of the oil conservator. The oil level gauge can be removed from the breathing chamber independently of the corrugated core of the oil conservator for maintenance or replacement.

[0008] The guide ratio wheel is rotatably mounted on the breathing chamber via a rotating shaft;

[0009] One end of the steel wire rope is fixedly connected to the movable end of the breathing chamber, and the other end is wound around and forms a transmission engagement with the guide gear wheel;

[0010] The guide ratio wheel is connected to the power input end of the oil level gauge. When the volume of transformer oil in the corrugated core of the oil tank changes, causing the moving end of the breathing chamber to move, the wire rope moves with the moving end and drives the guide ratio wheel to rotate around its axis. The guide ratio wheel drives the oil level gauge to operate through power transmission to indicate the oil level status.

[0011] According to the present invention, an external oil vertical corrugated metal oil tank is provided, wherein the outer circumferential surface of the guide ratio wheel is provided with a groove extending along its circumferential direction, the groove width is adapted to the cross-sectional diameter of the wire rope, and the groove wall is provided with an anti-slip and wear-resistant coating to limit the wire rope from axial displacement along the guide ratio wheel during transmission and reduce the frictional loss between the wire rope and the groove.

[0012] According to the present invention, a vertical corrugated metal oil tank with external oil supply is provided. One end of the steel wire rope is connected to the movable end of the breathing chamber through a detachable connector. The detachable connector includes a bolt, a nut, and a pressure plate for clamping the end of the steel wire rope. The pressure plate has an arc-shaped groove adapted to the outer circumference of the steel wire rope. The bolt passes through the pressure plate and the movable end of the breathing chamber in sequence and is then threadedly connected to the nut to fix the steel wire rope.

[0013] According to the present invention, a vertical metal corrugated oil tank with external oil supply also includes a main connecting pipe. One end of the main connecting pipe is connected to the bottom opening of the corrugated core of the oil tank, and the other end of the main connecting pipe is used to connect to the oil tank of a transformer or reactor.

[0014] According to the present invention, a vertical metal corrugated oil tank with external oil supply is provided. The movable end of the breathing chamber is a metal end plate integrally formed with the corrugated pleated structure of the corrugated core of the oil tank. When the volume of transformer oil in the corrugated core of the oil tank increases and the corrugated core expands, the metal end plate is stretched and displaced away from the corrugated core of the oil tank. When the volume of transformer oil decreases and the corrugated core contracts, the metal end plate is reset and displaced closer to the corrugated core of the oil tank.

[0015] According to the present invention, a vertical corrugated metal oil tank with external oil is provided, wherein the inner wall of the breathing chamber is provided with a guide rail extending along its height direction, and the movable end of the breathing chamber is provided with a slider that slides in cooperation with the guide rail. When the movable end is displaced, the slider slides along the guide rail to limit the displacement direction of the movable end.

[0016] This utility model provides an external oil vertical metal corrugated oil tank, in which the oil level gauge is installed on an independently set breather chamber, forming a complete physical isolation from the transformer oil inside the corrugated core of the oil tank. When the oil level gauge needs to be repaired or replaced, it can be directly removed from the breather chamber without draining the transformer oil, completely eliminating the complicated process of draining, repairing, filling and venting oil during the maintenance of traditional oil level gauges, greatly shortening after-sales maintenance time, and avoiding the risk of oil waste and oil contamination.

[0017] The outer circumference of the guide ratio wheel is provided with a groove that matches the cross-sectional diameter of the wire rope, and the groove wall is provided with an anti-slip and wear-resistant coating. This design effectively limits the deviation of the wire rope along the axial direction of the guide ratio wheel during transmission and reduces the friction loss between the wire rope and the groove, ensuring a stable and smooth transmission link. At the same time, the inner wall of the breathing chamber is provided with a guide rail extending along the height direction. The slider of the movable end slides in cooperation with the guide rail, which can force the movable end to move only in the vertical direction, avoiding lateral deviation caused by oil flow impact or structural deformation. This significantly improves the synchronization between oil level changes and movable end displacement, thereby improving the oil level indication accuracy compared with the traditional disc float oil level gauge, effectively solving the problem of insufficient accuracy of traditional oil level gauges.

[0018] The wire rope is connected to the movable end of the breathing chamber via a detachable connector consisting of bolts, nuts, and a pressure plate with an arc groove. This structure ensures the stability of the wire rope and facilitates its installation, commissioning, and replacement. One end of the main connecting pipe is connected to the bottom opening of the corrugated core of the oil conservator, and the other end can be directly connected to the transformer or reactor tank without the need for additional adapter components, simplifying the on-site assembly process and shortening the installation cycle.

[0019] The movable end of the breather chamber adopts a metal end plate integrally molded with the corrugated core structure of the oil conservator. This not only allows it to adapt synchronously with the corrugated core to the deformation caused by changes in transformer oil volume, avoiding the leakage problems that are prone to occur in traditional welded movable ends, but also reduces stress concentration during deformation, extending the service life of the movable end. Simultaneously, the complete isolation of the oil level gauge from the transformer oil prevents corrosion or performance degradation of the oil level gauge components by the oil, further extending the overall service life of the oil level gauge. Furthermore, since components such as the oil level gauge, guide ratio wheel, and wire rope can be pre-assembled and debugged in the breather chamber before leaving the factory, forming a ready-to-use integrated module, it effectively solves the problem that traditional disc float oil level gauges cannot be pre-assembled and shipped, further improving on-site installation efficiency. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of an external oil vertical corrugated metal oil storage tank provided in an embodiment of this utility model.

[0022] Reference numerals in the attached diagram: 1. Corrugated core of oil tank; 2. Breathing chamber; 3. Oil level gauge; 4. Guide gear ratio wheel; 5. Steel wire rope; 6. Moving end; 7. Detachable connector; 8. Main connecting pipe; 9. Guide slide rail; 10. Slider. 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 provides an external oil vertical metal corrugated oil tank, including an oil tank corrugated core 1, a breathing chamber 2, an oil level gauge 3, a guide ratio wheel 4, and a steel wire rope 5;

[0028] The breathing chamber 2 is independently located on one side of the corrugated core 1 of the oil conservator, and the breathing chamber 2 is equipped with a movable end 6 that can move synchronously with the change in the volume of transformer oil in the corrugated core 1 of the oil conservator.

[0029] The oil level gauge 3 is installed on the breathing chamber 2 so that the oil level gauge 3 is completely isolated from the transformer oil contained in the corrugated core 1 of the oil conservator. The oil level gauge 3 can be removed from the breathing chamber 2 independently of the corrugated core 1 of the oil conservator for maintenance or replacement.

[0030] The guide ratio wheel 4 is rotatably mounted on the breathing chamber 2 via a rotating shaft;

[0031] One end of the steel wire rope 5 is fixedly connected to the movable end 6 of the breathing chamber 2, and the other end is wound around and forms a transmission cooperation with the guide variable ratio wheel 4;

[0032] The guide ratio wheel 4 is connected to the power input end of the oil level gauge 3. When the volume of transformer oil in the corrugated core 1 of the oil tank changes, causing the movable end 6 of the breathing chamber 2 to be displaced, the wire rope 5 moves with the movable end 6 and drives the guide ratio wheel 4 to rotate around its axis. The guide ratio wheel 4 drives the oil level gauge 3 to run through power transmission to indicate the oil level status.

[0033] To further optimize the above technical solution, a groove extending along its circumference is provided on the outer peripheral surface of the guide ratio wheel 4. The groove width is adapted to the cross-sectional diameter of the wire rope 5, and the groove wall is provided with an anti-slip and wear-resistant coating to limit the axial displacement of the wire rope 5 along the guide ratio wheel 4 during transmission and reduce the frictional loss between the wire rope 5 and the groove.

[0034] To further optimize the above technical solution, one end of the wire rope 5 is connected to the movable end 6 of the breathing chamber 2 via a detachable connector 7. The detachable connector 7 includes a bolt, a nut, and a pressure plate for clamping the end of the wire rope 5. The pressure plate has an arc-shaped groove that fits the outer circumference of the wire rope 5. The bolt passes through the pressure plate and the movable end 6 of the breathing chamber 2 in sequence and is then threadedly connected to the nut to fix the wire rope 5.

[0035] To further optimize the above technical solution, a main connecting pipe 8 is also included. One end of the main connecting pipe 8 is connected to the bottom opening of the corrugated core 1 of the oil conservator, and the other end of the main connecting pipe 8 is used to connect to the transformer or reactor oil tank.

[0036] To further optimize the above technical solution, the movable end 6 of the breathing chamber 2 is a metal end plate integrally formed with the corrugated structure of the corrugated core 1 of the oil conservator. When the volume of transformer oil in the corrugated core 1 of the oil conservator increases and the corrugated core expands, the metal end plate is stretched and displaced away from the corrugated core 1 of the oil conservator; when the volume of transformer oil decreases and the corrugated core contracts, the metal end plate is reset and displaced closer to the corrugated core 1 of the oil conservator.

[0037] To further optimize the above technical solution, the inner wall of the breathing chamber 2 is provided with a guide rail 9 extending along its height direction, and the movable end 6 of the breathing chamber 2 is provided with a slider 10 that slides in cooperation with the guide rail 9. When the movable end 6 is displaced, the slider 10 slides along the guide rail 9 to limit the displacement direction of the movable end 6.

[0038] Working principle: When the transformer or reactor is running, the transformer oil in the corrugated core 1 of the oil conservator will change in volume due to temperature fluctuations. When the volume of the transformer oil increases, the oil pressure pushes the corrugated core 1 of the oil conservator to expand outward. Since the movable end 6 of the breathing chamber 2 is a metal end plate integrally formed with the corrugated pleated structure of the corrugated core, the expansion of the corrugated core will cause the movable end 6 to stretch and displace away from the corrugated core. When the volume of the transformer oil decreases, the oil pressure decreases, the corrugated core contracts inward, and the movable end 6 simultaneously resets and displaces towards the corrugated core. During this process, the slider 10 on the movable end 6 slides along the guide rail 9 on the inner wall of the breathing chamber 2, strictly limiting the displacement of the movable end 6 to only the vertical direction, ensuring the correspondence between the displacement of the movable end 6 and the change in the volume of the transformer oil.

[0039] The steel wire rope 5, which is fixedly connected to the movable end 6 of the breathing chamber 2, will move linearly in sync with the displacement of the movable end 6. When the movable end 6 moves away from the corrugated core, the steel wire rope 5 is pulled upward. When the movable end 6 moves closer to the corrugated core, the steel wire rope 5 moves downward as the movable end 6 descends. Since the other end of the steel wire rope 5 is wound around and forms a transmission cooperation with the guide ratio wheel 4, and the groove of the guide ratio wheel 4 is adapted to the diameter of the steel wire rope 5 and the groove wall is provided with an anti-slip and wear-resistant coating, the linear movement of the steel wire rope 5 will stably drive the guide ratio wheel 4 to rotate around its axis, and there will be no situation where the steel wire rope 5 deviates or slips along the axial direction of the groove, thus ensuring the precise correspondence between the moving distance of the steel wire rope 5 and the rotation angle of the guide ratio wheel 4. Furthermore, since the guide ratio wheel 4 is connected to the power input end of the oil level gauge 3, the rotation of the guide ratio wheel 4 will transmit mechanical power to the inside of the oil level gauge 3. The oil level gauge 3 converts the rotation angle of the guide ratio wheel 4 into the corresponding oil level value through the preset transmission ratio relationship, and finally realizes the real-time indication of the transformer oil level.

[0040] During later maintenance, if the oil level gauge 3 needs to be repaired or replaced, it can be directly removed from the breather chamber 2 without emptying the transformer oil in the oil tank. If the wire rope 5 needs to be maintained, simply remove the bolts, nuts and pressure plates connecting the movable end 6 and the wire rope 5 to remove and replace the wire rope 5. The entire maintenance process will not affect the normal oil storage function of the oil tank, ensuring the continuous and stable operation of the power equipment.

[0041] Therefore, it can be seen that the external oil vertical metal corrugated oil tank provided by this utility model has its oil level gauge installed on an independently set breathing chamber, which forms a complete physical isolation from the transformer oil in the corrugated core of the oil tank. When the oil level gauge needs to be repaired or replaced, it can be directly removed from the breathing chamber without draining the transformer oil, which completely eliminates the complicated process of draining oil, repairing, filling oil, and venting air during the maintenance of traditional oil level gauges, greatly shortens the after-sales maintenance time, and avoids the risk of oil waste and oil contamination.

[0042] The outer circumference of the guide ratio wheel is provided with a groove that matches the cross-sectional diameter of the wire rope, and the groove wall is provided with an anti-slip and wear-resistant coating. This design effectively limits the deviation of the wire rope along the axial direction of the guide ratio wheel during transmission and reduces the friction loss between the wire rope and the groove, ensuring a stable and smooth transmission link. At the same time, the inner wall of the breathing chamber is provided with a guide rail extending along the height direction. The slider of the movable end slides in cooperation with the guide rail, which can force the movable end to move only in the vertical direction, avoiding lateral deviation caused by oil flow impact or structural deformation. This significantly improves the synchronization between oil level changes and movable end displacement, thereby improving the oil level indication accuracy compared with the traditional disc float oil level gauge, effectively solving the problem of insufficient accuracy of traditional oil level gauges.

[0043] The wire rope is connected to the movable end of the breathing chamber via a detachable connector consisting of bolts, nuts, and a pressure plate with an arc groove. This structure ensures the stability of the wire rope and facilitates its installation, commissioning, and replacement. One end of the main connecting pipe is connected to the bottom opening of the corrugated core of the oil conservator, and the other end can be directly connected to the transformer or reactor tank without the need for additional adapter components, simplifying the on-site assembly process and shortening the installation cycle.

[0044] The movable end of the breather chamber adopts a metal end plate integrally molded with the corrugated core structure of the oil conservator. This not only allows it to adapt synchronously with the corrugated core to the deformation caused by changes in transformer oil volume, avoiding the leakage problems that are prone to occur in traditional welded movable ends, but also reduces stress concentration during deformation, extending the service life of the movable end. Simultaneously, the complete isolation of the oil level gauge from the transformer oil prevents corrosion or performance degradation of the oil level gauge components by the oil, further extending the overall service life of the oil level gauge. Furthermore, since components such as the oil level gauge, guide ratio wheel, and wire rope can be pre-assembled and debugged in the breather chamber before leaving the factory, forming a ready-to-use integrated module, it effectively solves the problem that traditional disc float oil level gauges cannot be pre-assembled and shipped, further improving on-site installation efficiency.

[0045] 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 vertical corrugated metal oil storage tank with external oil coating, characterized in that, This includes the corrugated core of the oil tank, the breather chamber, the oil level gauge, the guide pulley, and the wire rope; The breathing chamber is independently located on one side of the corrugated core of the oil conservator, and the breathing chamber is equipped with a movable end that can move synchronously with the change in the volume of transformer oil in the corrugated core of the oil conservator. The oil level gauge is installed on the breathing chamber to completely isolate the oil level gauge from the transformer oil contained in the corrugated core of the oil conservator. The oil level gauge can be removed from the breathing chamber independently of the corrugated core of the oil conservator for maintenance or replacement. The guide ratio wheel is rotatably mounted on the breathing chamber via a rotating shaft; One end of the steel wire rope is fixedly connected to the movable end of the breathing chamber, and the other end is wound around and forms a transmission engagement with the guide gear wheel; The guide ratio wheel is connected to the power input end of the oil level gauge. When the volume of transformer oil in the corrugated core of the oil tank changes, causing the moving end of the breathing chamber to move, the wire rope moves with the moving end and drives the guide ratio wheel to rotate around its axis. The guide ratio wheel drives the oil level gauge to operate through power transmission to indicate the oil level status.

2. The external oil vertical corrugated metal oil storage tank according to claim 1, characterized in that, The outer circumferential surface of the guide ratio wheel is provided with a groove extending along its circumference. The groove width is adapted to the cross-sectional diameter of the wire rope, and the groove wall is provided with an anti-slip and wear-resistant coating to limit the wire rope from axially shifting along the guide ratio wheel during transmission and reduce frictional loss between the wire rope and the groove.

3. The external oil vertical corrugated metal oil tank according to claim 1, characterized in that, One end of the wire rope is connected to the movable end of the breathing chamber via a detachable connector. The detachable connector includes a bolt, a nut, and a pressure plate for clamping the end of the wire rope. The pressure plate has an arc-shaped groove that fits the outer circumference of the wire rope. The bolt passes through the pressure plate and the movable end of the breathing chamber in sequence and is then threadedly connected to the nut to fix the wire rope.

4. The external oil vertical corrugated metal oil storage tank according to claim 1, characterized in that, It also includes a main connecting pipe, one end of which is connected to the bottom opening of the corrugated core of the oil conservator, and the other end of which is used to connect to the transformer or reactor oil tank.

5. The external oil vertical corrugated metal oil storage tank according to claim 1, characterized in that, The movable end of the breathing chamber is a metal end plate integrally formed with the corrugated structure of the corrugated core of the oil conservator. When the volume of transformer oil in the corrugated core of the oil conservator increases and the corrugated core expands, the metal end plate is stretched and displaced away from the corrugated core of the oil conservator. When the volume of transformer oil decreases and the corrugated core contracts, the metal end plate is reset and displaced closer to the corrugated core of the oil conservator.

6. The external oil vertical corrugated metal oil storage tank according to claim 1, characterized in that, The inner wall of the breathing cavity is provided with a guide rail extending along its height direction, and the movable end of the breathing cavity is provided with a slider that slides in cooperation with the guide rail. When the movable end is displaced, the slider slides along the guide rail to limit the displacement direction of the movable end.

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