Device for detecting gas in transformer oil
By designing the device of preheating box and separation box in transformer oil, using the heating and separation chamber structure, the problems of slow detection speed and poor accuracy in the prior art are solved, and efficient separation and accuracy of gases in transformer oil are achieved. Detection, supports timely identification of transformer failures.
Patent Information
- Application Number
- CN202420726990.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-10
AI Technical Summary
The existing transformer oil gas detection device has slow sampling speed, poor accuracy, and great detection limitations, so it is impossible to effectively detect gas dissolved in the oil.
A device including a preheating box and a separation box is designed. The preheating box is equipped with a preheating channel and an electric heating assembly for heating the transformer oil to promote the precipitation of dissolved gas. The separation box is realized through a V-shaped separation chamber and an exhaust gas collection tube. Gas separation and collection.
It improves the efficiency and accuracy of gas detection in transformer oil, ensuring accurate judgment of the transformer operating conditions and identification of fault types.
Smart Images
Figure CN222189238U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformer detection, in particular to a gas detection device in transformer oil. Background Art
[0002] Under the influence of electric field, heat, moisture and oxygen, transformer oil and solid insulating materials will age slowly over time, thus producing a small amount of hydrogen, low molecular hydrocarbon gas and carbon oxides. When the transformer is operating under fault conditions, the oil temperature around the fault point will rise, causing chemical bonds to break and forming a variety of characteristic gases; in addition, bubbles may remain in the gas, which will gradually dissolve into the oil during the operation of the transformer.
[0003] The presence of these gases may not only affect the insulation performance of the oil, but also reduce the flash point of the oil and increase the risk of transformer operation. Therefore, by detecting the gas in the transformer oil, these potential problems can be discovered and dealt with in a timely manner to ensure the safe and stable operation of the transformer. The gas composition and content in the transformer oil can reflect the degree of transformer insulation aging or failure to a certain extent. Different types of faults will produce different gas components. By analyzing these gases, the type and degree of transformer faults can be determined, so that corresponding maintenance measures can be taken to prevent further development of the fault.
[0004] Existing gas detection devices generally use manual sampling, which not only has a slow sampling speed and poor accuracy, but also has detection limitations because a large amount of gas generated is dissolved in the transformer oil and cannot be sampled. Utility Model Content
[0005] The utility model aims at the technical problems existing in the prior art and provides a gas detection device in transformer oil to solve the problem that the gas detection in transformer oil is complicated and has limitations.
[0006] The utility model solves the above technical problems with the following technical solutions: A gas detection device in transformer oil, comprising a preheating box and a separation box;
[0007] The preheating box is provided with a preheating channel and an electric heating component for heating the transformer oil in the preheating channel;
[0008] A V-shaped separation chamber is formed in the separation box, and an oil drain pipe is provided along the bottom end of the V-shaped separation chamber, and exhaust gas collection pipes are provided along the two top ends of the V-shaped separation chamber; the channel outlet of the preheating channel extends to the low point of the V-shaped separation chamber through a pipeline and is connected to the V-shaped separation chamber;
[0009] After the transformer oil in the preheating box is preheated and transported to the V-shaped separation chamber, the waste gas in the oil is discharged and collected along the waste gas collecting pipe, and the transformer oil is discharged and collected along the oil drain pipe.
[0010] On the basis of the above technical solution, the present invention can also be improved as follows.
[0011] Furthermore, a plurality of heat exchange tubes arranged at equal intervals are arranged in the preheating box, and a plurality of partitions are provided in the inner cavity of the preheating box for partitioning the head or tail ends of two adjacent heat exchange tubes to form a continuous preheating channel.
[0012] Furthermore, the electric heating component is an electric heating wire, an electric heating belt or an electric heating plate surrounding the outside of the heat exchange tube.
[0013] Furthermore, it also includes a pressure relief box, one side of which is connected to a main delivery pipe, and along the top and bottom of the pressure relief box, an air relief pipe and an oil relief pipe connected to the channel inlet of the preheating channel in the preheating box are respectively provided.
[0014] Furthermore, a filter cover is installed at one end of the main delivery pipe extending into the pressure relief box.
[0015] Furthermore, an oil pump is installed on the oil drain pipe.
[0016] Furthermore, the pressure relief box is provided with oil guiding slopes on both sides which are inclined toward the oil drain pipe.
[0017] Moreover, the gas detection device in transformer oil provided by the utility model has at least the following beneficial effects compared with the prior art: the device mainly comprises two parts, namely a preheating box and a separation box. A preheating channel and an electric heating component are provided in the preheating box for heating the transformer oil. When the transformer oil passes through the preheating channel, the electric heating component heats the oil to promote the precipitation of the gas dissolved in the oil, thereby improving the detection efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is a cross-sectional schematic diagram of the separation box of the utility model;
[0020] Figure 3 It is a cross-sectional schematic diagram of the preheating box of the utility model;
[0021] Figure 4 It is a cross-sectional schematic diagram of the pressure relief box of the utility model.
[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0023] 1. Preheating box, 1.1. Electric heating component, 1.2. Partition, 2. Separation box, 3. Oil drain pipe, 4. Waste gas collection pipe, 5. Heat exchange pipe, 6. Pressure relief box, 7. Main conveying pipe, 8. Air release pipe, 9. Oil drain pipe, 10. Filter cover. DETAILED DESCRIPTION
[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0025] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.
[0026] like Figure 1 and Figure 2 As shown, the gas detection device in transformer oil of the practical design includes a preheating box 1 and a separation box 2;
[0027] like Figure 3 As shown, the preheating box 1 is provided with a preheating channel and an electric heating component 1.1 for heating the transformer oil in the preheating channel;
[0028] A V-shaped separation chamber is formed in the separation box 2, and an oil drain pipe 3 is provided along the bottom end of the V-shaped separation chamber, and exhaust gas collection pipes 4 are provided along the two top ends of the V-shaped separation chamber; the channel outlet of the preheating channel extends to the low point of the V-shaped separation chamber through a pipeline and is connected to the V-shaped separation chamber;
[0029] After the transformer oil in the preheating box 1 is preheated and transported to the V-shaped separation chamber, the waste gas in the oil is discharged and collected along the waste gas collecting pipe 4 , and the transformer oil is discharged and collected along the oil drain pipe 3 .
[0030] The device mainly includes two parts: a preheating box 1 and a separation box 2. The preheating box 1 is provided with a preheating channel and an electric heating component 1.1 for heating transformer oil. When the transformer oil passes through the preheating channel, the electric heating component 1.1 heats the oil to promote the precipitation of gas dissolved in the oil.
[0031] The heated transformer oil is then transported to the V-shaped separation chamber in the separation box 2. The design of the V-shaped separation chamber allows the gas to rise to the top of the chamber due to its light density, while the oil flows along the bottom of the chamber due to gravity. Waste gas collection pipes 4 are provided at both top ends of the chamber to collect and discharge the precipitated gas; and an oil discharge pipe 3 is provided at the bottom end of the chamber to collect and discharge the treated transformer oil.
[0032] In this way, the gas in the transformer oil can be effectively separated and collected, and the treated oil can be discharged and collected through the oil drain pipe 3. In the whole process, the effects of preheating and separation jointly ensure the accurate detection of the gas in the transformer oil, providing an important basis for judging the operating condition of the transformer.
[0033] As an implementation mode, a plurality of heat exchange tubes 5 arranged at equal distances are arranged in the preheating box 1, and a plurality of partitions 1.2 are also provided in the inner cavity of the preheating box 1 for partitioning the head or tail ends of two adjacent heat exchange tubes 5 to form a continuous preheating channel.
[0034] like Figure 3 As shown, a plurality of heat exchange tubes 5 arranged at equal distances are arranged in the preheating box. These heat exchange tubes are the main components for heat transfer. The transformer oil will flow through these tubes and exchange heat through the tube walls. In order to form a continuous preheating channel, a plurality of partitions 1.2 are also arranged in the preheating box. These partitions respectively separate the head or tail ends of two adjacent heat exchange tubes to ensure that the transformer oil can flow along a predetermined path and pass through each heat exchange tube in turn, thereby achieving a uniform and continuous heating process.
[0035] Specifically, the electric heating component 1.1 is an electric heating wire, electric heating belt or electric heating sheet surrounding the outside of the heat exchange tube 5. This ensures that the heat can be evenly distributed on the surface of the heat exchange tube 5, thereby achieving uniform heating of the transformer oil.
[0036] As an implementation method, Figure 4 As shown, it also includes a pressure relief box 6, one side of which is connected to a main delivery pipe 7, and along the top and bottom of the pressure relief box 6, an air relief pipe 8 and an oil relief pipe 9 connected to the channel inlet of the preheating channel in the preheating box 1 are respectively provided.
[0037] When the transformer oil enters the pressure relief tank 6, due to the pressure or gas that may exist in the oil, these gases can be discharged through the top gas relief pipe 8, thereby achieving preliminary separation of the oil and the gas.
[0038] At the same time, in order to transport the treated transformer oil to the preheating box 1 for heating and further gas separation, an oil drain pipe 9 is provided at the bottom of the pressure relief box. This pipe is connected to the entrance of the preheating channel in the preheating box to ensure that the transformer oil can flow smoothly into the preheating channel.
[0039] Specifically, a filter cover 10 is installed at one end of the main delivery pipe 7 extending into the pressure relief tank 6. When the transformer oil flows into the pressure relief tank 6 through the main delivery pipe 7, the filter cover 10 can block solid particles, metal fragments or other impurities in the oil, preventing them from entering and possibly clogging or damaging subsequent oil processing systems and equipment.
[0040] Specifically, an oil pump is installed on the oil drain pipe 9 to extract the transformer oil from the pressure relief tank 6 and transport it to the preheating tank 1 through the oil drain pipe 9 for heating treatment.
[0041] Specifically, the pressure relief box 6 has oil guide slopes on both sides inclined toward the oil drain pipe 9. When the transformer oil enters the pressure relief box 6, due to the inclined design of the oil guide slope, the oil will flow downward along the slope and gradually gather at the position of the oil drain pipe.
[0042] As a supplement, the exhaust gas collection pipe 4 and the vent pipe 8 will collect gas in the transformer oil. In order to analyze the type and degree of transformer fault, it is necessary to further detect the gas. The detection steps are as follows:
[0043] Gas collection and pretreatment: The gas collected from the exhaust gas collection pipe 4 and the vent pipe 8 needs to be pretreated, including drying, filtering and possible concentration steps to remove impurities and moisture to ensure the accuracy of subsequent analysis.
[0044] Gas composition analysis: Use a gas chromatograph (GC) or other suitable analytical instrument to conduct qualitative and quantitative analysis of the collected gas. This can determine the content of various components in the gas (such as hydrogen, methane, ethylene, acetylene, etc.).
[0045] Data storage and recording: The analysis results are stored in the form of data and plotted as trend graphs or compared with other historical data to better determine the status changes of the transformer.
[0046] By detecting and analyzing the above parameters, the type and degree of transformer fault can be judged more accurately, thus providing a strong basis for maintenance decisions.
[0047] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.
[0048] Although the preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.
[0049] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A gas detection device in transformer oil, characterized in that: It comprises a preheating box (1) and a separation box (2); The preheating box (1) is provided with a preheating channel and an electric heating component (1.1) for heating the transformer oil in the preheating channel; A V-shaped separation chamber is formed in the separation box (2), and an oil drain pipe (3) is provided along the bottom end of the V-shaped separation chamber, and exhaust gas collection pipes (4) are provided along the two top ends of the V-shaped separation chamber; the channel outlet of the preheating channel extends to the lowest point of the V-shaped separation chamber through a pipeline and is connected to the V-shaped separation chamber; After the transformer oil in the preheating box (1) is preheated and transported to the V-shaped separation chamber, the waste gas in the oil is discharged and collected along the waste gas collection pipe (4), and the transformer oil is discharged and collected along the oil drain pipe (3).
2. The gas detection device in transformer oil according to claim 1, characterized in that: The preheating box (1) is provided with a plurality of heat exchange tubes (5) arranged at equal distances, and the inner cavity of the preheating box (1) is also provided with a plurality of partitions (1.2) for separating the head or tail ends of two adjacent heat exchange tubes (5) to form a continuous preheating channel.
3. The gas detection device in transformer oil according to claim 2, characterized in that: The electric heating component (1.1) is an electric heating wire, an electric heating belt or an electric heating sheet surrounding the outside of the heat exchange tube (5).
4. The gas detection device in transformer oil according to claim 1, characterized in that: It also comprises a pressure relief box (6), one side of which is connected to a main delivery pipe (7), and an air relief pipe (8) and an oil relief pipe (9) connected to the channel inlet of the preheating channel in the preheating box (1) are respectively provided along the top and bottom of the pressure relief box (6).
5. The transformer oil gas detection device according to claim 4, characterized in that: One end of the main delivery pipe (7) extending into the pressure relief box (6) is provided with a filter cover (10).
6. The gas detection device in transformer oil according to claim 4, characterized in that: An oil delivery pump is installed on the oil drain pipe (9).
7. The transformer oil gas detection device according to claim 4, characterized in that: The pressure relief box (6) is provided with oil guiding slopes on both sides which are inclined towards the oil drain pipe (9).