Horizontal external oil metal corrugated oil conservator for wind power compartment type transformer

Abstract

The utility model belongs to the technical field of manufacturing of metal corrugated oil conservators for transformers, and particularly relates to a horizontal type external oil metal corrugated oil conservator for a wind power compartment type transformer, a metal corrugated core body is installed inside a cylinder body, a core body flange is connected with a cylinder body flange in a sealing mode, and the metal corrugated core body can stretch out and draw back in the cylinder body in the axial direction. A telescopic space of the metal corrugated core body is formed between the core body bottom plate and the barrel body bottom plate; the barrel is hermetically connected with a transformer oil tank through an oil conveying pipeline connected with the bottom; an exhaust pipeline for exhausting internal air is arranged at the top of the barrel; the oil level indicating device is installed on a core flange and is of a stay wire type pointer oil level gauge, and the pointer oil level gauge displays the height of the oil level through the length change of a stay wire connected to a core bottom plate. Compared with a traditional oil metal corrugated oil conservator, the oil conservator is smaller in size, stable in operation, accurate in oil level display and suitable for a wind power compartment type transformer.

Description

Technical Field

[0001] This utility model belongs to the technical field of manufacturing metal corrugated oil conservator for transformers, specifically a horizontal external metal corrugated oil conservator for wind power box-type transformers. Background Technology

[0002] In recent years, with the development of my country's power transmission and transformation industry, the demand for box-type transformers has increased. Traditional horizontal external oil-sealed corrugated metal conservators are no longer suitable for box-type transformers due to their large size, large oil capacity, and complex oil level indication mechanisms. Therefore, the development of a more suitable horizontal external oil-sealed corrugated metal conservator has become a necessity for the box-type oil conservator industry. Utility Model Content

[0003] To address the problem that traditional horizontal external metal corrugated oil conservators are unsuitable for use in box-type transformers due to their large size, large oil capacity, and complex oil level indication mechanism, the purpose of this utility model is to provide a horizontal external metal corrugated oil conservator for wind power box-type transformers.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This utility model includes a corrugated metal core, a cylindrical body, and an oil level indicator. The corrugated metal core is located inside the cylindrical body, with one end sealed to one end of the cylindrical body. The other end of the corrugated metal core is a core base plate. The corrugated metal core extends and retracts along the axial direction of the cylindrical body, and the space between the core base plate and the other end of the cylindrical body is the extension and retraction space of the corrugated metal core. The oil level indicator includes a pointer oil level gauge and a pull-wire mechanism. The pointer oil level gauge is installed on the outside of one end of the corrugated metal core, and the pull-wire mechanism is located inside the corrugated metal core. The pull-wire mechanism includes a pointer worm gear, a worm, a hook, and a wire box. The worm gear and the pointer of the pointer oil level gauge move coaxially. The junction box is fixed inside one end of the corrugated metal core. One end of the worm is rotatably connected to the junction box, and the other end of the worm meshes with the pointer worm gear. One end of the hook is connected to the bottom plate of the core, and the other end of the hook is connected to one end of the pull wire. The other end of the pull wire extends into the junction box and is wound around and connected to one end of the worm. The corrugated metal core drives the hook to extend and retract synchronously through the bottom plate of the core. The hook drives the worm to rotate through the pull wire, and then converts the change in the length of the pull wire into the rotation of the pointer through meshing with the pointer worm gear, thereby displaying the change in the oil level in the cylinder.

[0006] Wherein: one end of the corrugated metal core is provided with a core flange, the core flange is located outside the cylinder and is sealed to the cylinder flange provided at one end of the cylinder.

[0007] One end of the corrugated metal core is provided with a breathing tube, which connects the interior of the corrugated metal core with the outside.

[0008] The corrugated metal core is divided into multiple segments, which are connected by connecting plates. Each connecting plate has a guide wheel on its outer edge that rolls in contact with the inner wall of the cylinder.

[0009] One end of the cylinder is open and is provided with a cylinder flange. The other end of the cylinder is fixed to a cylinder bottom plate. An oil supply pipeline and an exhaust pipeline that communicate with the interior are respectively connected to the cylinder. The oil supply pipeline is sealed to the transformer oil tank. The transformer oil flows into the interior of the cylinder through the oil supply pipeline and is located outside the metal corrugated core. The air inside the cylinder is discharged through the exhaust pipeline.

[0010] The oil output line is connected to the bottom of the cylinder, and the exhaust line is connected to the top of the cylinder.

[0011] A bracket is fixed to the inner side of one end of the corrugated metal core, the wire box is mounted on the bracket, and the hook is connected to the inner side of the core base plate.

[0012] The advantages and positive effects of this utility model are as follows:

[0013] This utility model reduces the size of the traditional horizontal external oil tank structure and uses an innovative oil level indicator to display the oil level height, specifically:

[0014] 1. Small size: The horizontal external oil storage tank of this utility model adopts a small diameter cylinder, which greatly reduces the volume compared with the traditional large diameter horizontal external oil storage tank, and is suitable for transformers with small installation space (such as box-type transformers).

[0015] 2. Smooth operation: The core of this utility model has a circular structure and can extend and retract within the cylinder. The core is equipped with guide wheels in multiple sections to ensure smooth operation.

[0016] 3. Reliable oil level indicator structure: This utility model uses a combination of pointer-type oil level gauge and pull-wire mechanism to display the oil level height of the oil tank. This structure is simple. Compared with the traditional pointer oil level gauge, the pull-wire mechanism replaces the swing arm mechanism, thereby eliminating the need for a complex hinge linkage mechanism to cooperate with the swing arm mechanism. The pull wire is directly connected to the core base plate, directly displaying the true oil level height. The structure is simple and reliable, with no risk of jamming and a longer service life. Attached Figure Description

[0017] Figure 1A This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 1B for Figure 1A The left view;

[0019] Figure 2A This is a schematic diagram of the structure of the metal corrugated core of this utility model;

[0020] Figure 2B for Figure 2A The right view;

[0021] Figure 3A This is a schematic diagram of the structure of the cylindrical body of this utility model;

[0022] Figure 3B for Figure 3A The left view;

[0023] Figure 4A This is a schematic diagram of the oil level indicator device of this utility model;

[0024] Figure 4B for Figure 4A The left view;

[0025] Figure 5A for Figure 4A Schematic diagram of the center pointer oil level gauge;

[0026] Figure 5B for Figure 4A Schematic diagram of the pull wire mechanism;

[0027] Wherein: 1 is the corrugated metal core, 2 is the cylinder, 3 is the oil level indicator, 4 is the breather pipe, 5 is the core bottom plate, 6 is the cylinder flange, 7 is the cylinder bottom plate, 8 is the oil supply pipeline, 9 is the exhaust pipeline, 10 is the core flange, 11 is the pointer oil level gauge, 12 is the pull cable mechanism, 13 is the pointer worm gear, 14 is the worm, 15 is the hook, 16 is the junction box, 17 is the bracket, 18 is the connecting plate, 19 is the guide wheel, and 20 is the pointer. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] like Figure 1A , Figure 1B As shown, this utility model includes a corrugated metal core 1, a cylinder 2, and an oil level indicator 3. The corrugated metal core 1 is located inside the cylinder 2. One end of the corrugated metal core 1 is sealed to one end of the cylinder 2. The other end of the corrugated metal core 1 is a core bottom plate 5. The corrugated metal core 1 extends and retracts along the axial direction (i.e., the horizontal direction) of the cylinder 2. The space between the core bottom plate 5 and the other end of the cylinder 2 is the extension and retraction space of the corrugated metal core 1.

[0030] like Figure 1A , Figure 1B , Figure 3A and Figure 3BAs shown, the cylinder 2 in this embodiment is a hollow cylinder, welded from a small-diameter (600mm) blank. One end of the cylinder 2 is open and welded with a cylinder flange 6, while the other end is welded with a cylinder bottom plate 7 for sealing. An oil supply pipe 8 and an exhaust pipe 9, communicating with the interior, are connected to the cylinder 2. The oil supply pipe 8 is connected to the bottom of the cylinder 2, and the cylinder 2 is sealed to the transformer oil tank via the oil supply pipe 8. Transformer oil flows into the cylinder 2 through the oil supply pipe 8 and is located outside the corrugated metal core 1. The exhaust pipe 9 is connected to the top of the cylinder 2, and air inside the cylinder 2 is discharged through the exhaust pipe 9. The cylinder 2 has the function of storing transformer oil.

[0031] like Figure 1A , Figure 1B , Figure 2A , Figure 2B , Figure 3A and Figure 3B As shown, the corrugated metal core 1 in this embodiment has a circular structure. One end of the corrugated metal core 1 is provided with a core flange 10, which is located outside one end of the cylindrical body 2 and is sealed to the cylindrical body flange 6 at one end of the cylindrical body 2. The corrugated metal core 1 can expand and contract axially within the cylindrical body 2. The space between the core bottom plate 5 and the cylindrical bottom plate 7 forms the expansion and contraction space of the corrugated metal core 1, creating an oil conservator structure whose volume dynamically changes with the transformer oil temperature. In this embodiment, a breather pipe 4 is provided on the core flange 10 of the corrugated metal core 1, connecting the interior of the corrugated metal core 1 to the outside, allowing the corrugated metal core 1 to breathe during operation.

[0032] To ensure the smooth operation of the corrugated metal core 1, the corrugated metal core 1 can be divided into multiple segments, which are connected by connecting plates 18. Each connecting plate 18 has a guide wheel 19 on its outer edge that rolls in contact with the inner wall of the cylinder 2. During the extension and retraction of the corrugated metal core 1, the guide wheel 19 rolls along the inner wall of the cylinder 2, which plays a guiding role.

[0033] like Figure 1A , Figure 1B , Figure 4A , Figure 4B , Figure 5A and Figure 5BAs shown, the oil level indicator 3 in this embodiment includes a pointer oil level gauge 11 and a pull-wire mechanism 12. The pointer oil level gauge 11 is installed on the outer side of one end of the metal corrugated core 1 (i.e., installed on the outer side of the core flange 10). The pull-wire mechanism 12 is located inside the metal corrugated core 1. The pull-wire mechanism 12 includes a pointer worm gear 13, a worm 14, a hook 15, a wire box 16, and a bracket 17. The pointer worm gear 13 and the pointer 20 of the pointer oil level gauge 11 are coaxially connected (i.e., the pointer worm gear 13 and the pointer 20 are respectively installed on the outer side of the core flange 10). At both ends of the rotating shaft (and both connected to the rotating shaft), the bracket 17 is fixed to the inner side of one end of the metal corrugated core 1 (i.e., fixed to the inner side of the core flange 10), the wire box 16 is installed on the bracket 17, one end of the worm gear 14 is rotatably connected to the wire box 16, and the other end of the worm gear 14 is engaged with the pointer worm wheel 13 for transmission; one end of the hook 15 is connected to the inner side of the core base plate 5, and the other end of the hook 15 is connected to one end of the pull wire, and the other end of the pull wire extends into the wire box 16 and is wound and connected to one end of the worm gear 14.

[0034] The junction box 16 in this embodiment is prior art and will not be described in detail here. One end of the worm gear 14 inside the junction box 16 is equipped with a torsion spring to realize the extension and retraction of the metal corrugated core 1 to make the pointer 20 rotate forward and backward. The transmission structure between the worm gear 14 and the pointer worm wheel 13 can also be replaced by two bevel gears.

[0035] As the corrugated metal core 1 extends and retracts within the cylinder 2, the core 1 drives the hook 15 to extend and retract synchronously via the core base plate 5. The hook 15 drives the worm gear 14 to rotate via a pull wire, which in turn converts the change in pull wire length into the rotation of the pointer 20 through meshing with the pointer worm wheel 13, thus displaying the change in oil level within the cylinder 2. Compared to the traditional lever structure of pointer oil level gauges, the pull wire mechanism of this invention is simpler, easier to install, requires no other structure to cooperate with the lever, and is suitable for installation at various oil level depths.

Claims

1. A horizontal outer oil metal corrugated tank for wind power truck-type transformer, comprising a metal corrugated core (1) and a cylinder (2), characterized in that: Also include oil level indicating device (3), the metal corrugated core (1) is located inside the cylinder (2), one end of the metal corrugated core (1) is sealed with the one end of the cylinder (2) Connection, the other end of the metal corrugated core (1) is the core bottom plate (5), the metal corrugated core (1) is telescopic along the axial direction of the cylinder (2), the core bottom plate (5) and the other end of the cylinder (2) is the telescopic space of the metal corrugated core (1); The oil level indicating device (3) includes a pointer oil level gauge (11) and a pull line mechanism (12), the pointer oil level gauge (11) is installed on one end of the metal corrugated core (1) outside, the pull line mechanism (12) is located inside the metal corrugated core (1), the pull line mechanism (12) includes a pointer worm gear (13), a worm (14), a hook (15) and a wire box (16), the pointer worm gear (13) is coaxial with the pointer (20) of the pointer oil level gauge (11) Linkage, the wire box (16) is fixed on one end of the metal corrugated core (1) inside, one end of the worm (14) is rotatably connected with the wire box (16), the other end of the worm (14) is engaged with the pointer worm gear (13) Transmission, one end of the hook (15) is connected to the core bottom plate (5), the other end of the hook (15) is connected with one end of the pull line, the other end of the pull line extends into the wire box (16) and is wound with one end of the worm (14) Connection; The metal corrugated core (1) drives the hook (15) to expand synchronously through the core bottom plate (5), the hook (15) drives the worm (14) to rotate through the pull line, and then converts the length change of the pull line into the rotation of the pointer (20) through the meshing transmission of the pointer worm gear (13), and then displays the oil level height change in the cylinder (2).

2. The horizontal outer oil metal corrugated tank for wind power truck-type transformer according to claim 1, characterized in that: One end of the metal corrugated core (1) is provided with a core flange (10), the core flange (10) is located outside the cylinder (2), and is sealingly connected with the cylinder flange (6) provided at one end of the cylinder (2).

3. The horizontal outer oil metal corrugated tank for wind power truck-type transformer according to claim 1, characterized in that: One end of the metal corrugated core (1) is provided with a breathing pipe (4), the breathing pipe (4) communicates the inside of the metal corrugated core (1) with the outside.

4. The horizontal outer oil metal corrugated tank for wind power truck-type transformer according to claim 1, characterized in that: The metal corrugated core (1) is divided into multiple segments, and adjacent segments are connected through connecting plates (18), and the outer edge of each connecting plate (18) is provided with a guide wheel (19) in rolling contact with the inner wall of the cylinder (2).

5. The wind electric bin-type transformer horizontal outer oil metal corrugated oil conservator according to claim 1, characterized in that: One end of the cylinder (2) is open and provided with a cylinder flange (6), the other end of the cylinder (2) is fixedly connected with a cylinder bottom plate (7), the cylinder (2) is respectively connected with an oil conveying pipeline (8) and an exhaust pipeline (9) which communicate with the inside, the oil conveying pipeline (8) is sealingly connected with the transformer oil tank, the transformer oil flows to the inside of the cylinder (2) through the oil conveying pipeline (8) and is located outside the metal corrugated core (1), the air in the cylinder (2) is discharged through the exhaust pipeline (9).

6. The horizontal outer oil metal corrugated tank for wind power truck-type transformer according to claim 5, characterized in that: The oil conveying pipeline (8) is connected to the bottom of the cylinder (2), and the exhaust pipeline (9) is connected to the top of the cylinder (2).

7. The horizontal outer oil metal corrugated tank for wind power truck-type transformer according to claim 1, characterized in that: The metal corrugated core (1) has a support (17) fixed to the inner side of one end, the wire box (16) is installed on the support (17), and the hook (15) is connected with the inner side of the core bottom plate (5).

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