Internal oil filling type capsule oil conservator

Abstract

The utility model discloses an internal oil filling type capsule oil conservator, which relates to the technical field of electrical equipment and comprises a conservator body, an oil storage capsule arranged at the lower part in the conservator body, a connecting oil pipe fixed at the bottom of the conservator body, a connecting oil pipe communicated with the bottom of the oil storage capsule, an oil filling pipe communicated with the outer side of the connecting oil pipe, and an oil inlet pipe communicated with the oil filling pipe, the internal oil filling type capsule oil conservator has the advantages that the manufacturing process is simpler, and the internal oil filling type capsule oil conservator is easier to maintain.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to an internally filled oil capsule oil storage tank. Background Technology

[0002] Transformers experience constant temperature changes during operation, causing transformer oil to expand and contract with temperature variations. To compensate for these changes, an oil conservator is typically installed above the transformer. This conservator is usually a cylindrical container installed above the transformer tank and connected to it via pipes. Due to thermal expansion and contraction, the oil level in the conservator fluctuates. To stabilize the transformer's internal pressure, the conservator is installed above the transformer and connected to the air via pipes and a dehumidifier. However, this makes the transformer oil highly susceptible to moisture and oxidation, affecting the transformer's quality.

[0003] To address the problem of transformer oil becoming damp, the commonly used solution is a capsule-type oil conservator with external oil filling; a small number of corrugated oil conservators are also used. (Reference) Figure 1 The capsule-filled oil storage tank has a capsule suspended at the top of the tank body, with transformer oil filling the space between the tank and the capsule. This structure uses a large amount of oil, and it is not easy to detect if the capsule is damaged. Moreover, if the tank body is not well sealed, it is easy to cause oil leakage. The corrugated oil storage tank uses stainless steel rings to form a corrugated tube. The volume inside and outside the corrugated tube is adjusted by the expansion and contraction of the corrugated ring tube, thereby adjusting the oil volume in the tank. However, this structure is expensive and prone to jamming, so the corrugated oil storage tank is used less often.

[0004] Currently, there are also a few capsule-type oil storage tanks with oil-filled capsules. For example, Chinese patent CN222354884U discloses an internal oil-filled capsule oil storage tank that facilitates capsule replacement. However, since gas may enter the capsule in this structure, it is necessary to open a hole in the upper part of the capsule and connect it to the outside of the cabinet through a hose. However, the venting hose is very small and cannot be used for vacuuming or oil filling. Therefore, a vacuum port and an oil filling port need to be designed separately, making the structure and manufacturing process more complicated. Moreover, the oil filling port setting of Chinese patent CN222354884U is not convenient for on-site oil replenishment. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides an internally filled capsule oil storage tank.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] An internally filled capsule oil storage tank includes a cabinet body, an oil storage capsule in the lower part of the cabinet body, a connecting oil pipe fixed to the bottom of the cabinet body, the bottom of the oil storage capsule connected to the connecting oil pipe, an oil injection pipe connected to the connecting oil pipe, an oil inlet pipe connected to the oil injection pipe, a gas relay connected to the oil inlet pipe, an oil injection hole at the top of the oil injection pipe, and a piston or pressure relief valve at the oil injection hole.

[0008] Furthermore, the highest point of the oil inlet pipe is higher than the lowest point of the top of the connecting oil pipe.

[0009] Furthermore, the highest point of the oil storage capsule is lower than the center line of the cabinet.

[0010] Furthermore, the height of the oil injection pipe is higher than the height of the centerline of the cabinet.

[0011] Furthermore, a drain plug is provided at the bottom of the oil injection pipe.

[0012] Furthermore, the lowest point of the oil injection pipe is lower than the connecting oil pipe and lower than the inlet oil pipe.

[0013] Furthermore, the oil injection pipe is located between the cabinet and the gas relay.

[0014] Furthermore, the cabinet is located between the oil injection pipe and the gas relay.

[0015] Furthermore, the top of the oil storage capsule in the cabinet is connected to a venting hose, which extends from the top of the cabinet.

[0016] Furthermore, a drain plug is provided at the bottom of the cabinet.

[0017] Furthermore, the cabinet is equipped with an oil level gauge.

[0018] Furthermore, the bottom of the cabinet has an outlet, and a connecting flange is provided at the outlet. A connecting flange is also provided on the connecting oil pipe. The outlet and the connecting oil pipe are fixedly connected through the connecting flange, and the bottom opening of the oil storage capsule is fixed at the connecting flange.

[0019] The beneficial effects of this utility model are:

[0020] This invention fills the transformer oil into the oil storage capsule. Compared with the externally filled capsule oil tank, it not only uses less oil and is less prone to leakage, but also makes it easier to observe the condition of the oil storage capsule, and it is easier to detect problems such as capsule breakage. The oil filling pipe is connected to the oil inlet pipe and the connecting pipe respectively. The structure and manufacturing process are relatively simple, making it more convenient to replenish oil in the transformer on site. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an existing externally filled capsule oil storage tank;

[0022] Figure 2 This is a schematic diagram of a structure of the internally filled capsule oil storage tank of this utility model;

[0023] Figure 3 yes Figure 2 The main view;

[0024] Figure 4 This is another structural schematic diagram of the internally filled capsule oil storage tank of this utility model;

[0025] Figure 5 yes Figure 4 The main view;

[0026] Figure 6 yes Figure 3 A schematic diagram showing the addition of a vent hose;

[0027] Figure 7 yes Figure 5 A schematic diagram showing the addition of a vent hose;

[0028] In the diagram: 1. Cabinet; 2. Oil reservoir; 3. Connecting oil pipe; 4. Injection pipe; 5. Inlet pipe; 6. Gas relay; 7. Injection hole; 8. Piston or pressure relief valve; 9. Connecting pipe; 10. Oil level gauge; 11. Outlet; 12. Connecting flange; 13. Centerline; 14. Highest point of the inlet pipe; 15. Lowest point of the top of the connecting oil pipe; 16. Drain plug; 17. Vent hose; 18. Drain plug. Detailed Implementation

[0029] To make the technical problems solved, the technical solutions and the beneficial effects of the utility model clearer, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 2-5 As shown, this utility model provides an internally filled capsule oil storage tank, including a cabinet body 1, an oil storage capsule 2 is provided in the lower part of the cabinet body 1, a connecting oil pipe 3 is fixed at the bottom of the cabinet body 1, the bottom of the oil storage capsule 2 is connected to the connecting oil pipe 3, an oil injection pipe 4 is connected to the outside of the connecting oil pipe 3, an oil inlet pipe 5 is also connected to the oil injection pipe 4, and a gas relay 6 is connected to the oil inlet pipe 5.

[0031] Oil-storage capsule 2 has the same structure as traditional externally filled oil-storage capsules, and... Figure 1 Compared to externally filled oil capsule tanks, filling the transformer oil into the oil storage capsule 2 not only requires less oil, but also makes it easier to seal the transformer oil, reducing the risk of leakage. It also facilitates observation of the condition of the oil storage capsule 2, making it easier to detect problems such as capsule breakage.

[0032] The height of the oil injection pipe 4 is higher than the height of the center line 13 of the cabinet 1. An oil injection hole 7 is opened at the top of the oil injection pipe 4, and a piston or pressure relief valve 8 is provided at the position of the oil injection hole 7.

[0033] In the actual production, operation and maintenance of transformers, it is often necessary to add oil to the transformer. Adding oil at the oil injection hole 7 at the top of the oil injection pipe 4 is easier to operate. At the same time, the oil injection hole 7 can also be used as a gas buffer chamber in the scenarios of venting and vacuuming.

[0034] The bottom of the oil injection pipe 4 is provided with a drain plug 18, through which the dirty oil in the oil injection pipe 4 can be released.

[0035] Specifically, the highest point 14 of the oil inlet pipe is higher than the lowest point 15 of the top of the connecting oil pipe. The oil injection pipe 4 connects the oil inlet pipe 5 and the connecting oil pipe 3. When the gas generated by the transformer passes through the oil inlet pipe 5 and enters the oil injection pipe 4, the gas will float above the oil injection pipe 4. Since the highest point 14 of the oil inlet pipe is higher than the lowest point 15 of the top of the connecting oil pipe, the gas will only float above the oil injection pipe 4 and will not enter the oil storage capsule 2 through the connecting oil pipe 3. By setting the oil injection pipe 4, it is possible to avoid drilling holes in the oil storage capsule 2, simplifying the manufacturing process and making maintenance easier.

[0036] Considering factors such as manufacturing process, the oil injection pipe 4 is preferably a tubular structure, which can be a square pipe, a round pipe, etc.

[0037] The lowest point of the oil injection pipe 4 is lower than both the connecting oil pipe 3 and the inlet oil pipe 5, allowing oil and other contaminants to collect at the bottom of the oil injection pipe 4 for easy cleaning. Simultaneously, the connecting oil pipe 3 can be curved, allowing for contaminant collection at the lowest point of the curved section.

[0038] Depending on the installation environment, dimensions, and other factors, the installation location of the oil injection pipe 4 can be rationally arranged as a preferred option. Figure 2 and Figure 3 As shown, the oil injection pipe 4 is located between the cabinet 1 and the gas relay 6. As another preferred option, such as... Figure 4 and Figure 5 As shown, cabinet 1 is located between oil injection pipe 4 and gas relay 6.

[0039] To compensate for the change in gas volume inside the cabinet 1 when the oil storage capsule 2 expands and contracts, a connecting pipe 9 is provided at the top of the cabinet 1. A dehumidifier is connected to the outer end of the connecting pipe 9, and the dehumidifier connects the inside of the cabinet 1 with the outside air.

[0040] The lower part of the cabinet 1 is equipped with a drain plug 16. The drain plug can be used to determine whether the oil in the oil storage capsule 2 has leaked. The cabinet 1 is equipped with an oil level gauge 10. The bottom of the cabinet 1 is provided with an outlet 11. A connecting flange 12 is provided at the outlet 11. A connecting flange 12 is also provided on the connecting oil pipe 3. The outlet 11 and the connecting oil pipe 3 are fixedly connected by the connecting flange 12. The bottom opening of the oil storage capsule 2 is fixed at the connecting flange 12.

[0041] As another preferred method, refer to Figure 6 and Figure 7 The top of the oil storage capsule 2 is connected to a venting hose 17, which extends from the top of the cabinet 1. The venting hose 17 is an alternative solution. When the oil filling pipe 4 cannot work properly or cannot completely release the gas in the oil storage capsule 2, the venting hose 17 can be used to release the gas.

[0042] This invention fills the transformer oil into the oil storage capsule 2. Compared with the externally filled capsule oil tank, it not only uses less oil but is also less prone to leakage. It also makes it easier to observe the condition of the oil storage capsule 2, and it is easier to detect problems such as capsule breakage. The oil injection pipe 4 is connected to the oil inlet pipe 5 and the connecting oil pipe 3 respectively. Since the highest point 14 of the oil inlet pipe is higher than the lowest point 15 of the top of the connecting oil pipe, the gas in the oil inlet pipe 5 will only float to the top of the oil injection pipe 4. The structure and manufacturing process are relatively simple, making it more convenient to replenish oil in the transformer on site.

[0043] 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 and improvements made within the spirit and principles of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An internally filled oil capsule storage tank, characterized in that, Includes a cabinet (1), with an oil storage capsule (2) in the lower part of the cabinet (1), a connecting oil pipe (3) fixed at the bottom of the cabinet (1), the bottom of the oil storage capsule (2) connected to the connecting oil pipe (3), an oil injection pipe (4) connected to the connecting oil pipe (3), an oil inlet pipe (5) connected to the oil injection pipe (4), a gas relay (6) connected to the oil inlet pipe (5), an oil injection hole (7) opened at the top of the oil injection pipe (4), and a piston or pressure relief valve (8) provided at the position of the oil injection hole (7).

2. The internally filled oil capsule storage tank according to claim 1, characterized in that, The highest point (14) of the inlet pipe is higher than the lowest point (15) of the top of the connecting pipe.

3. The internally filled oil capsule storage tank according to claim 1, characterized in that, The height of the oil injection pipe (4) is higher than the height of the center line (13) of the cabinet (1).

4. The internally filled oil capsule storage tank according to claim 1, characterized in that, The bottom of the oil injection pipe (4) is provided with a drain plug (18).

5. The internally filled oil capsule storage tank according to claim 1, characterized in that, The oil injection pipe (4) is located between the cabinet (1) and the gas relay (6).

6. The internally filled oil capsule storage tank according to claim 1, characterized in that, The cabinet (1) is located between the oil injection pipe (4) and the gas relay (6).

7. The internally filled oil capsule storage tank according to claim 1, characterized in that, The top of the oil storage capsule (2) is connected to a venting hose (17), which extends from the top of the cabinet (1).

8. The internally filled oil capsule storage tank according to claim 1, characterized in that, The lower part of the cabinet (1) is provided with a drain plug (16).

9. The internally filled oil capsule storage tank according to claim 1, characterized in that, The cabinet (1) is equipped with an oil level gauge (10).

10. The internally filled oil capsule storage tank according to claim 1, characterized in that, The bottom of the cabinet (1) is provided with an outlet (11), and a connecting flange (12) is provided at the outlet (11). A connecting flange (12) is also provided on the connecting oil pipe (3). The outlet (11) and the connecting oil pipe (3) are fixedly connected through the connecting flange (12). The bottom opening of the oil storage capsule (2) is fixed at the connecting flange (12).

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