A transformer oil gas monitoring device

Abstract

The utility model discloses a kind of transformer oil gas monitoring devices, it is related to transformer oil gas monitoring technical field, including transformer ontology, the right side fixed mounting of transformer ontology has support seat, the inside movable mounting of support seat has pump body, and fixed mounting has connecting pipe between the output end of pump body and transformer ontology, the top fixed mounting of transformer ontology has fixed box.Optimal in at:Through starting device, pump body extracts transformer oil in transformer ontology through connecting pipe, oil liquid flows into fixed box inside along oil inlet pipe accurately, completes oil liquid transport, while cylinder synchronous starting, its output end drives first connecting plate and second connecting plate collaborative action, wherein first connecting plate pulls piston rod in piston pipe and carries out the movement of preset stroke, adjust piston pipe inside state, build stable working basis for subsequent gas detection link, ensure the accuracy and coherence of detection process.

Description

Technical Field

[0001] This utility model relates to the field of gas monitoring technology in transformer oil, and in particular to a gas monitoring device for transformer oil. Background Technology

[0002] As a core piece of equipment in the power system, the operational stability of transformers directly determines the reliability of power supply. Internal faults in transformers (such as partial discharge and overheating) can cause the decomposition of insulating oil, producing characteristic gases. Monitoring the composition and content of these gases in the oil can provide early warnings of faults, making oil gas monitoring devices a critical piece of equipment for transformer operation and maintenance. With the increase in power grid capacity, higher demands are placed on the detection efficiency, data accuracy, and operational stability of monitoring devices, necessitating the optimization of device structures to adapt to complex operating conditions.

[0003] Existing online gas monitoring devices for transformer oil, exemplified by "An Online Gas Monitoring Device for Transformer Oil" (publication number CN216816681U), are based on the core design concept of directly contacting the detection head with the insulating oil inside the transformer. The detection element collects and analyzes the composition and content of dissolved gases in the oil in real time, thereby enabling monitoring of the transformer's operating status and fault early warning. While these devices have found some application in power system operation and maintenance due to their simple structure and ability to perform continuous online monitoring, their detection principle has inherent limitations, making it difficult to guarantee the accuracy of the detection results.

[0004] The core issue is the uneven distribution of dissolved gas concentrations in transformer oil, influenced by multiple factors. Temperature and pressure gradients exist in different areas inside the transformer. Near a fault point, the oil rapidly decomposes, generating a large amount of characteristic gases. Furthermore, the slow oil flow and the obstruction of the insulation structure hinder the diffusion of these newly generated gases, creating localized high-concentration areas. Impurities and moisture in the oil also adsorb some dissolved gases, further exacerbating the uneven concentration. The CN216816681U's detection head is a fixed contact type, capable of collecting oil samples only near the installation location. If not aligned with the appropriate area, it may collect unrepresentative samples, leading to significant discrepancies between the detection data and the actual situation. This makes it difficult to capture true gas composition information, affecting the accuracy of fault diagnosis and potentially causing false alarms or missed alarms, leading to operational and maintenance errors and posing a threat to the safe operation of the transformer. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a gas monitoring device for transformer oil, which solves the problem of uneven local gas concentration mentioned in the background section.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A gas monitoring device for transformer oil includes a transformer body. A support base is fixedly installed on the right side of the transformer body. A pump body is movably installed inside the support base, and a connecting pipe is fixedly installed between the output end of the pump body and the transformer body. A fixed box is fixedly installed on the top of the transformer body. An oil inlet pipe is fixedly installed between the fixed box and the output end of the pump body. An oil return pipe is fixedly installed between the transformer body and the fixed box. A fixing rod is fixedly installed inside the fixing box. A sealing block is fixedly installed on the outer surface of the fixing rod, and the outer surface of the sealing block is slidably connected in the groove of the fixing box. A second hinge block is fixedly installed on the top of the sealing block. A vertical rod is movably installed inside the fixing rod. A spring is fixedly installed between the inside of the fixing box and the bottom of the vertical rod. A first hinge block is installed on the outer surface of the vertical rod. A hinge rod is hinged between the first hinge block and the second hinge block.

[0007] Furthermore, a limiting block is fixedly installed inside the fixed box, and a slider is movably installed inside the limiting block. An extrusion plate is fixedly installed at the bottom of the two sliders, and the inclined surface of the extrusion plate is slidably connected to the top of the vertical rod. A gear rack is fixedly installed on the outer side of each extrusion plate.

[0008] Furthermore, a push rod is fixedly installed on the right side of the slider, and one end of the push rod passes through the interior of the fixed box. A cylinder is fixedly installed on the top of the fixed box, and a second connecting plate is fixedly connected to the output end of the cylinder and one end of the push rod.

[0009] Furthermore, a piston tube is fixedly installed on the top of the transformer body, a laser chromatograph is fixedly installed on the top of the piston tube, a first connecting plate is fixedly installed on the output end of the cylinder, a piston rod is movably installed inside the piston tube, and one end of the piston rod is fixedly connected to the inner side of the first connecting plate.

[0010] Furthermore, a support frame is fixedly installed at the bottom of the transformer body, and the support frame has through holes inside, which are arranged in a linear array.

[0011] Furthermore, a limiting plate is fixedly installed on the outer surface of the fixed rod, a rotating rod is movably installed inside the limiting plate, a gear is fixedly installed on the top of the rotating rod, and the gear meshes with the gear rack. A stirring rod is fixedly installed on the outer surface of the rotating rod.

[0012] Furthermore, the stirring rods are arranged in a circular array and a linear array on the outer surface of the rotating rod, and all stirring rods are made of stainless steel.

[0013] Compared with existing technologies, the advantages of this utility model are: 1. By coordinating the pump, cylinder, and connecting plate within the device, oil transfer and detection preparation can be carried out simultaneously. While the pump precisely transfers transformer oil through the connecting pipe and oil inlet pipe, the cylinder drives the first connecting plate to pull the piston rod to adjust the piston tube state. This eliminates the need to start multiple components in stages, significantly reducing the time spent on process connections. This synchronous linkage design avoids waiting gaps for single actions, ensuring the continuity of the monitoring process. At the same time, it makes the preliminary preparation work more targeted, laying the foundation for the accuracy of subsequent gas detection and effectively improving the overall monitoring efficiency.

[0014] 2: Through the integrated linkage function of the extrusion plate, the oil circuit sealing control and oil stirring operation are realized simultaneously. When the extrusion plate moves horizontally under the drive of the push rod and the slider, it not only extrudes the vertical rod through the inclined plane, but also completes the precise opening and closing of the oil circuit by linking the hinge block and the sealing block. At the same time, it drives the stirring rod to rotate by the meshing of the gear rack and gear. This design eliminates the need for an additional independent sealing drive mechanism and stirring power source, simplifies the internal structure of the device, reduces potential failures, and allows the sealing control and stirring action to be precisely coordinated, ensuring that the oil is fully stirred in the sealed environment, accelerating gas release and improving the comprehensiveness of gas detection.

[0015] 3. By combining the precise detection capabilities of the piston tube and laser chromatograph with the oil circulation design of the return oil pipe, a closed-loop operation of monitoring and resource recovery is achieved. After gas release, the laser chromatograph can accurately identify the gas composition and content, ensuring the reliability of the detection data and providing an accurate basis for transformer fault diagnosis. After the detection is completed, the oil flows back to the transformer body through the return oil pipe, avoiding oil waste and not affecting the normal operation of the transformer. This closed-loop design not only meets the core requirements of fault early warning but also takes into account resource utilization and equipment operation stability, making the monitoring process more practical and economical. Attached Figure Description

[0016] Figure 1 This is a frontal three-dimensional structural diagram of a gas monitoring device in transformer oil proposed in this utility model; Figure 2 This is a top-view three-dimensional structural diagram of a gas monitoring device in transformer oil proposed in this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the fixed box; Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the internal structure of the fixed box; Figure 6 This is a schematic diagram of a gear rack structure; Figure 7 This is a schematic diagram of the limiting frame structure; Figure 8 for Figure 7 Enlarged structural diagram at point B.

[0017] In the diagram: 1. Transformer body; 2. Oil return pipe; 3. Oil inlet pipe; 4. Fixed box; 5. Cylinder; 6. Laser chromatograph; 7. Piston tube; 8. First connecting plate; 9. Second connecting plate; 10. Push rod; 11. Support base; 12. Support frame; 13. Through hole; 14. Piston rod; 15. Limiting block; 16. Sliding block; 17. Extrusion plate; 18. Vertical rod; 19. First hinge block; 20. Gear; 21. Rotating rod; 22. Stirring rod; 23. Gear rack; 24. Hinge rod; 25. Second hinge block; 26. Fixed rod; 27. Sealing block; 28. Spring; 29. ​​Limiting plate; 30. Connecting pipe; 31. Pump body. Detailed Implementation

[0018] Reference Figures 1-8 A gas monitoring device for transformer oil includes a transformer body 1. A support base 11 is fixedly installed on the right side of the transformer body 1. A pump body 31 is movably installed inside the support base 11, and a connecting pipe 30 is fixedly installed between the output end of the pump body 31 and the transformer body 1. A fixed box 4 is fixedly installed on the top of the transformer body 1. An oil inlet pipe 3 is fixedly installed between the fixed box 4 and the output end of the push rod 10. An oil return pipe 2 is fixedly installed between the transformer body 1 and the fixed box 4. A fixing rod 26 is fixedly installed inside the fixing box 4. A sealing block 27 is fixedly installed on the outer surface of the fixing rod 26, and the outer surface of the sealing block 27 slides in the groove of the fixing box 4. A second hinge block 25 is fixedly installed on the top of the sealing block 27. A vertical rod 18 is movably installed inside the fixing rod 26. A spring 28 is fixedly installed between the inside of the fixing box 4 and the bottom of the vertical rod 18. A first hinge block 19 is installed on the outer surface of the vertical rod 18. A hinge rod 24 is hinged between the first hinge block 19 and the second hinge block 25.

[0019] In this application, by activating the gas monitoring device in the transformer oil, the pump body 31 will draw transformer oil from the transformer body 1 through the connecting pipe 30, and the oil will flow precisely into the fixed box 4 through the oil inlet pipe 3; at the same time, the cylinder 5 will start synchronously, and its output end will drive the first connecting plate 8 and the second connecting plate 9 to work together, wherein the first connecting plate 8 pulls the piston rod 14 to move in the piston tube 7, so as to adjust the working state for subsequent gas detection.

[0020] Subsequently, the second connecting plate 9 drives the push rod 10 to move laterally. The push rod 10 drives the slider 16 to slide within the limited trajectory of the limiting block 15, thereby pulling the extrusion plate 17 to move synchronously. The inclined surface of the extrusion plate 17 slides into contact with the top of the vertical rod 18 and generates a downward extrusion force, causing the vertical rod 18 to compress the spring 28 inside the fixed rod 26 and move vertically downward. When the vertical rod 18 moves downward, the first hinge block 19 on its outer surface pulls the second hinge block 25 through the hinge rod 24, causing the sealing block 27 to slide along the groove of the fixed box 4, thereby achieving precise sealing and conduction control of the oil circuit inside the fixed box 4.

[0021] Meanwhile, the gear rack 23 on the outer side of the extrusion plate 17 meshes with the gear 20 at the top of the rotating rod 21, driving the rotating rod 21 to rotate stably within the limiting plate 29. The stainless steel stirring rods 22, which are arranged in a circular and linear array on the outer surface of the rotating rod 21, rotate accordingly, thoroughly stirring the transformer oil in the fixed box 4 and promoting the rapid release of dissolved gases in the oil. After the gases are completely released, the piston tube 7, in conjunction with the laser chromatograph 6, accurately detects the composition and content of the gases. After the detection is completed, the transformer oil in the fixed box 4 flows back to the transformer body 1 through the return oil pipe 2, completing a complete monitoring process.

[0022] The pump body is model YCB, and its working principle is that the motor power source drives the pump shaft to rotate, which in turn drives the impeller and piston internal components to move, causing the pump chamber to change volume or generate centrifugal force. With the pressure difference generated in this process, the fluid is drawn into the pump chamber and pressurized, and finally discharged, thereby realizing the transfer and transportation of liquid or gas.

[0023] The laser chromatograph used is the LC-300 model. The working principle of the laser chromatograph is that the light source emits a laser of a specific wavelength to accurately irradiate the sample flowing through the chromatographic column. Different components in the sample have different absorption, scattering or fluorescence responses to the laser. The detector captures these difference signals and processes the data to finally output the type, content and separation spectrum of the components.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A gas monitoring device for transformer oil, comprising a transformer body (1), characterized in that, A support base (11) is fixedly installed on the right side of the transformer body (1). A pump body (31) is movably installed inside the support base (11). A connecting pipe (30) is fixedly installed between the output end of the pump body (31) and the transformer body (1). A fixed box (4) is fixedly installed on the top of the transformer body (1). An oil inlet pipe (3) is fixedly installed between the fixed box (4) and the output end of the pump body (31) (10). An oil return pipe (2) is fixedly installed between the transformer body (1) and the fixed box (4). A fixing rod (26) is fixedly installed inside the fixing box (4). A sealing block (27) is fixedly installed on the outer surface of the fixing rod (26), and the outer surface of the sealing block (27) is slidably connected in the groove of the fixing box (4). A second hinge block (25) is fixedly installed on the top of the sealing block (27). A vertical rod (18) is movably installed inside the fixing rod (26). A spring (28) is fixedly installed between the inside of the fixing box (4) and the bottom of the vertical rod (18). A first hinge block (19) is installed on the outer surface of the vertical rod (18). A hinge rod (24) is hinged between the first hinge block (19) and the second hinge block (25).

2. The gas monitoring device in transformer oil according to claim 1, characterized in that, The fixed box (4) is fixedly installed with a limiting block (15). The limiting block (15) is movably installed with a slider (16). The bottom of the two sliders (16) is fixedly installed with an extrusion plate (17). The inclined surface of the extrusion plate (17) is slidably connected to the top of the vertical rod (18). The outer side of the extrusion plate (17) is fixedly installed with a gear rack (23).

3. The gas monitoring device in transformer oil according to claim 2, characterized in that, A push rod (10) is fixedly installed on the right side of the slider (16), and one end of the push rod (10) passes through the interior of the fixed box (4). A cylinder (5) is fixedly installed on the top of the fixed box (4), and a second connecting plate (9) is fixedly connected to the output end of the cylinder (5) and one end of the push rod (10).

4. The gas monitoring device in transformer oil according to claim 3, characterized in that, A piston tube (7) is fixedly installed on the top of the transformer body (1), a laser chromatograph (6) is fixedly installed on the top of the piston tube (7), a first connecting plate (8) is fixedly installed on the output end of the cylinder (5), a piston rod (14) is movably installed inside the piston tube (7), and one end of the piston rod (14) is fixedly connected to the inner side of the first connecting plate (8).

5. A gas monitoring device in transformer oil according to claim 1, characterized in that, A support frame (12) is fixedly installed at the bottom of the transformer body (1). The support frame (12) has through holes (13) inside, and the through holes (13) are arranged in a linear array.

6. The gas monitoring device in transformer oil according to claim 1, characterized in that, A limiting plate (29) is fixedly installed on the outer surface of the fixed rod (26). A rotating rod (21) is movably installed inside the limiting plate (29). A gear (20) is fixedly installed on the top of the rotating rod (21), and the gear (20) meshes with the gear rack (23). A stirring rod (22) is fixedly installed on the outer surface of the rotating rod (21).

7. A gas monitoring device in transformer oil according to claim 6, characterized in that, The stirring rods (22) are arranged in a circular array and a linear array on the outer surface of the rotating rod (21), and the stirring rods (22) are all made of stainless steel.

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