Transformer oil tank with nitrogen protection mechanism

Abstract

The utility model relates to the technical field of transformers, in particular to a transformer oil tank with a nitrogen protection mechanism. Comprising an oil tank body which comprises an oil tank cover and an oil tank main body. A nitrogen storage tank is arranged at the top of the oil tank body, the nitrogen storage tank is communicated with the oil tank body through a connecting pipeline, and a flow switch valve and a pressure regulating valve I are arranged on the connecting pipeline. A humidity sensor and an oxygen sensor are arranged in the oil tank body and electrically connected with an alarm installed on the outer wall of the oil tank body. High-purity nitrogen is filled into the transformer oil tank through the nitrogen storage tank, so that positive pressure is formed in the oil tank, water vapor and oxygen can be effectively prevented from entering the transformer oil tank, and the adverse effect of the water vapor and the oxygen on transformer oil in the transportation process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and specifically to a transformer oil tank with a nitrogen protection mechanism. Background Technology

[0002] Transformers play a vital role in power systems, and the transformer tank, as an important component, requires adequate protection for the transformer oil and other internal parts. During transportation, transformers face various complex environments, including the following:

[0003] First, water vapor in the transportation environment can easily penetrate the transformer oil tank. Once water vapor mixes with the transformer oil, it will reduce the insulation performance of the transformer oil and increase the risk of transformer failure. For example, when transporting transformers in humid coastal areas, the problem of moisture absorption is particularly prominent, which may lead to partial discharge or even short circuit in the transformer, affecting the normal operation of the power system.

[0004] Secondly, prolonged contact between oxygen and transformer oil will cause oxidation. Oxidized transformer oil has an increased acid value, decreased insulation performance, and a shortened transformer lifespan. Especially during long-distance transportation, if the transformer tank cannot effectively isolate oxygen, it will severely impact the transformer's reliability.

[0005] Third, during transportation, existing transformer oil tanks often have a certain pressure difference between their interior and the external environment, making it easy for humid air and impurities from the outside to enter the tank under pressure. Traditional oil tanks lack effective pressure regulation and protection mechanisms, thus failing to provide effective protection for the transformer oil.

[0006] Therefore, in order to solve the above-mentioned technical problems, this application proposes a transformer oil tank with a nitrogen protection mechanism. Utility Model Content

[0007] This invention provides a transformer oil tank with a nitrogen protection mechanism, aiming to solve the adverse effects of water vapor and oxygen on transformer oil during transportation. By creating a positive nitrogen pressure inside the transformer oil tank, reliable protection is provided for the transformer oil.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows:

[0009] This utility model provides a transformer oil tank with a nitrogen protection mechanism, including an oil tank body, which includes an oil tank cover and an oil tank main body. A nitrogen storage tank is located on the top of the oil tank body, and the nitrogen storage tank and the oil tank body are connected by a connecting pipe. A flow switch valve and a pressure regulating valve I are respectively installed on the connecting pipe. A humidity sensor and an oxygen sensor are respectively installed inside the oil tank body, and the humidity sensor and the oxygen sensor are electrically connected to an alarm installed on the outer wall of the oil tank body.

[0010] Furthermore, a nitrogen pressure relief pipeline is provided on the top of the oil tank body, and a pressure regulating valve II is provided on the nitrogen pressure relief pipeline.

[0011] Furthermore, a sealing groove is provided at the connection between the fuel tank cap and the fuel tank body, and a double-layer rubber sealing ring is installed in the sealing groove.

[0012] The beneficial effects achieved by this utility model are as follows:

[0013] This invention features a nitrogen storage tank installed on the top of the transformer oil tank. The nitrogen storage tank is connected to the inside of the oil tank via a connecting pipeline equipped with a flow switch valve and a pressure regulating valve I. A nitrogen pressure relief pipeline, also equipped with a pressure regulating valve II, is installed on the top of the transformer oil tank. Before transformer transportation, high-purity nitrogen is introduced into the transformer oil tank using the nitrogen storage tank, creating positive pressure inside the tank. Pressure regulating valve I automatically adjusts the nitrogen injection based on pressure changes within the tank, while pressure regulating valve II automatically adjusts the nitrogen discharge. When the pressure inside the tank is lower than a set value, it automatically opens to introduce nitrogen; when the pressure is higher than the set value, it discharges excess nitrogen, ensuring a stable positive pressure inside the transformer oil tank. This effectively prevents water vapor and oxygen from entering the transformer oil tank, solving the adverse effects of water vapor and oxygen on the transformer oil during transportation.

[0014] This invention involves installing humidity and oxygen sensors inside the transformer tank to monitor the water vapor content and oxygen concentration in real time. The sensors are connected to an alarm installed on the outer wall of the tank. Once the water vapor content or oxygen concentration exceeds a set threshold, the alarm immediately emits an audible and visual alarm signal, alerting transport personnel to promptly inspect and address the issue, thus effectively ensuring the safety of the transformer during transportation.

[0015] The connection between the oil tank cover and the main body of the oil tank in this utility model is sealed with a double-layer rubber sealing ring, which further enhances the sealing performance of the transformer oil tank body and further avoids the adverse effects of water vapor and oxygen on the transformer oil during transportation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a bottom view of the fuel tank cap of this utility model;

[0019] Figure 3 This is a utility model Figure 1 Enlarged view of part A;

[0020] Figure 4 This is a utility model Figure 1 Enlarged view of part B.

[0021] In the diagram, 1. Fuel tank body; 101. Fuel tank cover; 102. Fuel tank body; 3. Connecting pipeline; 4. Flow switch valve; 5. Pressure regulating valve I; 6. Humidity sensor; 7. Oxygen sensor; 8. Alarm; 9. Nitrogen pressure relief pipeline; 10. Pressure regulating valve II; 11. Double-layer rubber sealing ring. Detailed Implementation

[0022] 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 a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] like Figures 1-4 As shown, this utility model provides a transformer oil tank with a nitrogen protection mechanism, including an oil tank body 1, which includes an oil tank cover 101 and an oil tank body 102. A nitrogen storage tank 2 is located on the top of the oil tank body 1, and the nitrogen storage tank 2 and the oil tank body 1 are connected by a connecting pipe 3. A flow switch valve 4 and a pressure regulating valve I 5 are respectively installed on the connecting pipe 3. A humidity sensor 6 and an oxygen sensor 7 are respectively installed inside the oil tank body 1, and the humidity sensor 6 and the oxygen sensor 7 are electrically connected to an alarm 8 installed on the outer wall of the oil tank body 1. A nitrogen pressure relief pipe 9 is located on the top of the oil tank body 1, and a pressure regulating valve II 10 is installed on the nitrogen pressure relief pipe 9. A sealing groove is provided at the connection between the oil tank cover and the oil tank body, and a double-layer rubber sealing ring 11 is installed in the sealing groove.

[0026] When using this utility model in practice:

[0027] 1. Preparations before transportation:

[0028] Check the nitrogen storage tank 2 for nitrogen quantity and purity to ensure it meets transportation requirements. Connect the nitrogen storage tank 2 to the oil tank body 1 via the connecting pipe 3, and open the flow switch valve 4 and pressure regulating valve I5 to slowly fill the oil tank body 1 with nitrogen.

[0029] Check the sealing of the fuel tank cap, inlet and outlet, etc., to ensure that the double-layer rubber sealing ring 11 and sealing joint are installed in place and seal well. If any sealing defects are found, replace or repair them in time.

[0030] The humidity sensor 6, oxygen sensor 7, and alarm 8 were calibrated and tested to ensure that the monitoring and alarm system was working properly.

[0031] 2. Transportation process:

[0032] During transportation, regularly check whether the alarm 8 is working properly, observe the values ​​displayed by the humidity sensor 6 and the oxygen sensor 7, and ensure that the water vapor content and oxygen concentration in the fuel tank 1 are within the normal range.

[0033] If alarm 8 sounds, immediately stop the vehicle and inspect it to determine whether the problem is with the sensor or the fuel tank seal. If it is a seal issue, take immediate corrective action, refill with nitrogen, and adjust the pressure to the normal range.

[0034] 3. Post-transportation processing:

[0035] Upon arrival at the destination, slowly release the nitrogen gas from the fuel tank body 1 through pressure regulating valve II10 to restore the pressure of the fuel tank body 1 to atmospheric pressure. Disconnect the connecting pipe 3 and the nitrogen storage tank 2 and store them properly.

[0036] Double-check all performance indicators of the transformer oil, such as insulation strength and acid value, to ensure that the transformer oil has not been adversely affected during transportation. If any abnormalities are found, treat or replace the transformer oil promptly.

[0037] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A transformer oil tank with a nitrogen protection mechanism, comprising an oil tank body (1), wherein the oil tank body (1) includes an oil tank cover (101) and an oil tank main body (102), characterized in that: The top of the oil tank body (1) is provided with a nitrogen storage tank (2), and the nitrogen storage tank (2) and the oil tank body (1) are connected by a connecting pipe (3). The connecting pipe (3) is provided with a flow switch valve (4) and a pressure regulating valve I (5). The inside of the oil tank body (1) is provided with a humidity sensor (6) and an oxygen sensor (7). The humidity sensor (6) and the oxygen sensor (7) are respectively electrically connected to an alarm (8) provided on the outer wall of the oil tank body (1).

2. A transformer oil tank with a nitrogen protection mechanism according to claim 1, characterized in that: The top of the oil tank body (1) is provided with a nitrogen pressure relief pipeline (9), and a pressure regulating valve II (10) is provided on the nitrogen pressure relief pipeline (9).

3. A transformer oil tank with a nitrogen protection mechanism according to claim 1, characterized in that: A sealing groove is provided at the connection between the fuel tank cover (101) and the fuel tank body (102), and a double-layer rubber sealing ring (11) is installed in the sealing groove.

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