Transformer with acetylene rapid detection system

Abstract

The utility model belongs to the technical field of gas detection, and particularly relates to a transformer with an acetylene rapid detection system, which comprises a transformer interface flange and an H2 real-time monitoring system, an H2 real-time monitoring system is arranged at one end of the transformer interface flange, the oil inlet and return pipeline is arranged at the other end of the H2 real-time monitoring system, the acetylene rapid detection system is arranged at the other end of the oil inlet and return pipeline, and a gas chromatography detection system is arranged at the other end of the acetylene rapid detection system. An all-component gas chromatography detection system is arranged in the acetylene rapid detection system; the acetylene content detection device is used for detecting the acetylene content based on a laser photoacoustic spectrum technology, has the advantages of good stability, high sensitivity, high detection speed, no gas separation and consumption and the like, and avoids cross interference during fault gas measurement through laser wavelength adjustment; carrier gas or standard gas is not needed in the detection process.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas detection, in particular to a transformer with an acetylene rapid detection system. Background Art

[0002] As core equipment in power grids, the operational status of transformers is crucial for power supply reliability. Currently, widely used oil-immersed transformers can produce a variety of gases when internal thermal faults, discharge faults, or oil or paper aging occur. These gases primarily include hydrogen, hydrocarbons (methane, ethane, ethylene, acetylene, propane, propylene, etc.), carbon monoxide, and carbon dioxide.

[0003] As the fault progresses, the decomposed gases form bubbles that dissolve in the oil through convection and diffusion. Dissolved gas analysis in transformer oil is currently the primary method for diagnosing and predicting transformer faults and is a key technology for condition-based maintenance. The composition and content of gases generated by a transformer fault are one of the primary criteria for determining the fault type.

[0004] Hydrogen and acetylene in oil are important characteristic gases that can reflect the early discharge faults of transformers. Timely and accurate detection of hydrogen and acetylene dissolved in insulating oil is an effective method to predict potential internal faults and early diagnosis of electrical equipment development. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a transformer with an acetylene rapid detection system, which effectively solves the problems existing in the existing technology on the market.

[0006] The technical solution of the utility model is: a transformer with an acetylene rapid detection system, including a transformer interface flange and an H2 real-time monitoring system, and also including an acetylene rapid detection system, a full-component gas chromatography detection system, an oil inlet and return pipeline and a communication module. One end of the transformer interface flange is provided with the H2 real-time monitoring system, the other end of the H2 real-time monitoring system is provided with the oil inlet and return pipeline, the other end of the oil inlet and return pipeline is provided with the acetylene rapid detection system, and the interior of the acetylene rapid detection system is provided with a full-component gas chromatography detection system.

[0007] As a further solution of the present invention, the H2 real-time monitoring system is electrically connected to one end of the transformer interface flange through a conductive line.

[0008] As a further solution of the present invention, the acetylene rapid detection system adopts vacuum dynamic headspace degassing technology.

[0009] As a further solution of the present invention, two groups of oil tanks are provided inside the acetylene rapid detection system.

[0010] As a further solution of the present invention, the full-component gas chromatography detection system adopts vacuum dynamic headspace degassing technology and a high-sensitivity microbridge detector.

[0011] As a further solution of the present invention, the full-component gas chromatography detection system detects the corresponding gas.

[0012] As a further solution of the present invention, the oil inlet and return pipelines are connected by copper pipes.

[0013] As a further solution of the present invention, the H2 real-time monitoring system, the acetylene rapid detection system and the full-component gas chromatography detection system are electrically connected to the communication module through conductive lines.

[0014] The beneficial effects achieved by the utility model using the above structure are as follows:

[0015] 1. Laser-based photoacoustic spectroscopy technology is used to detect acetylene content. It has the advantages of good stability, high sensitivity, fast detection speed, and no gas separation and consumption. By adjusting the laser wavelength, cross-interference during fault gas measurement is avoided. The detection process does not require carrier gas or standard gas.

[0016] Second, vacuum dynamic headspace degassing technology is used to separate oil and gas. The components in the oil are extracted multiple times. Therefore, this technology has the advantages of high degassing efficiency, short time, good repeatability, etc., and can greatly improve the analysis accuracy of small concentration components;

[0017] 3. The dual oil tank design allows for alternating testing and analysis, shortening the testing cycle and enabling rapid multiple testing and analysis. This eliminates inaccuracies that may arise from single test results, providing a more reliable basis for fault diagnosis and prediction.

[0018] 4. Real-time monitoring of hydrogen in oil uses a solid-state palladium alloy hydrogen sensor, which is a truly hydrogen-specific technology. The sensor chip is directly inserted into the transformer oil to measure dissolved hydrogen without the need for an oil-gas separation membrane, consumables, or regular maintenance costs.

[0019] 5. Based on the principle of chromatographic analysis, vacuum dynamic headspace degassing technology and high-sensitivity microbridge detector, high-sensitivity FID detector plus high-sensitivity thermal conductivity (TCD) are used to detect eight components in transformer oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the overall structural diagram of a transformer with an acetylene rapid detection system according to the present utility model;

[0021] Figure 2 This is a working diagram of a transformer with an acetylene rapid detection system according to the utility model;

[0022] Figure 3 This is a detection flow chart of a transformer with an acetylene rapid detection system according to the utility model.

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0024] Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of such a phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] like Figure 1-Figure 3 As shown, the utility model provides a transformer with an acetylene rapid detection system, including a transformer with an acetylene rapid detection system, including a transformer interface flange and an H2 real-time monitoring system, and also including an acetylene rapid detection system, a full-component gas chromatography detection system, an oil inlet and return pipeline, and a communication module. One end of the transformer interface flange is provided with the H2 real-time monitoring system, the other end of the H2 real-time monitoring system is provided with the oil inlet and return pipeline, the other end of the oil inlet and return pipeline is provided with the acetylene rapid detection system, and the interior of the acetylene rapid detection system is provided with a full-component gas chromatography detection system.

[0026] The H2 real-time monitoring system is electrically connected to one end of the transformer interface flange through a conductive line. The transformer flange interface is suitable for connecting the device oil inlet pipeline. The H2 sensor is integrated here to monitor the hydrogen content in the oil in real time.

[0027] The acetylene rapid detection system adopts vacuum dynamic headspace degassing technology to separate oil and gas. The components in the oil are extracted multiple times. Therefore, this technology has the advantages of high degassing efficiency, short time, good repeatability, etc., and can greatly improve the analysis accuracy of small concentration components. Laser photoacoustic spectroscopy technology is used to measure gas content. Therefore, it does not have the disadvantages of traditional chromatographic columns and chromatographic column aging, pollution, saturation, etc. The narrow band line width of the laser light source avoids cross interference during fault gas measurement. The system does not require carrier gas or standard gas during operation. Two oil tanks are used inside the system. The two oil tanks can be analyzed alternately. The response time is 6 minutes and the shortest detection cycle is 3 minutes, which meets the needs of fast and repeatable detection on-site. The alternating workflow is as follows: Figure 2 .

[0028] The full-component gas chromatography detection system adopts vacuum dynamic headspace (purge-trap) degassing technology and a high-sensitivity microbridge detector, completing the collection and analysis process in 40 minutes and realizing the detection of eight components in transformer oil.

[0029] The oil inlet and return pipelines are connected by copper pipes and are used to connect the oil inlet and return pipelines of the transformer and the system body.

[0030] The communication module aggregates data from H2 monitoring, acetylene rapid detection systems, and full-component chromatography detection systems, and performs comprehensive analysis and diagnosis. It supports multiple communication methods, including MODBUS, GPRS, IEC60870-5-104, and IEC61850, using a unified data model, service model, and standard transmission protocols to enable measurement data transmission, remote monitoring, and control of equipment.

[0031] During specific use, the system uses an H2 sensor to monitor the hydrogen in the transformer oil in real time and regularly performs oil filling and draining operations to prevent inaccurate H2 monitoring data due to the formation of dead oil areas in the transformer oil at the flange.

[0032] When abnormal changes in H2 content occur, the acetylene rapid detection system is turned on, and multiple alternating tests are performed to quickly detect the acetylene content results and send them to the backend; and when the acetylene value is also abnormal, the full component chromatography test is turned on, and the comprehensive diagnosis results are sent to the backend.

[0033] When the H2 content is normal, the system will start the acetylene rapid detection and full component chromatography detection at regular intervals. Under normal circumstances, the acetylene rapid detection system will be started once a day, and the full component chromatography detection system will be started once every 7 days. The working process is as follows Figure 1 shown.

[0034] The above is the overall workflow of the utility model. Just repeat this step next time you use it.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0037] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art may make various modifications or changes to the above embodiments without departing from the concept of the present invention. Therefore, the scope of protection of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A transformer with an acetylene rapid detection system, comprising a transformer interface flange and an H2 real-time monitoring system, characterized in that: It also includes an acetylene rapid detection system, a full-component gas chromatography detection system, an oil inlet and return pipeline, and a communication module. One end of the transformer interface flange is provided with an H2 real-time monitoring system, the other end of the H2 real-time monitoring system is provided with an oil inlet and return pipeline, the other end of the oil inlet and return pipeline is provided with an acetylene rapid detection system, and the interior of the acetylene rapid detection system is provided with a full-component gas chromatography detection system.

2. The transformer with an acetylene rapid detection system according to claim 1, characterized in that: The H2 real-time monitoring system is electrically connected to one end of the transformer interface flange through a conductive line.

3. The transformer with an acetylene rapid detection system according to claim 2, characterized in that: The acetylene rapid detection system adopts vacuum dynamic headspace degassing technology.

4. The transformer with an acetylene rapid detection system according to claim 3, characterized in that: Two groups of oil tanks are arranged inside the acetylene rapid detection system.

5. The transformer with an acetylene rapid detection system according to claim 4, characterized in that: The full-component gas chromatography detection system adopts vacuum dynamic headspace degassing technology and a high-sensitivity microbridge detector.

6. The transformer with an acetylene rapid detection system according to claim 5, characterized in that: The full-component gas chromatography detection system detects the corresponding gas.

7. The transformer with an acetylene rapid detection system according to claim 6, characterized in that: The oil inlet and return pipelines are connected by copper pipes.

8. The transformer with an acetylene rapid detection system according to claim 7, characterized in that: The H2 real-time monitoring system, the acetylene rapid detection system and the full-component gas chromatography detection system are electrically connected to the communication module through conductive lines.

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