Gas flow analyzing and recording device for transformer

Abstract

The utility model relates to a transformer gas flow analyzing and recording device, which comprises a gas relay body, a liquid level sensor, a processor and a memory, and is technically characterized in that a transparent window is arranged on the front side wall of the gas relay body, and a horizontal supporting cylinder is arranged on the periphery of the transparent window; a plurality of horizontal rails are evenly arranged on the periphery of the horizontal supporting cylinder and used for supporting a cylindrical sliding base, connecting lugs are fixed to the two sides of the peripheral face of the sliding base respectively, electric push rods are arranged between the connecting lugs and the front side wall of the gas relay body, and an end plate is fixed to the outer end face of the sliding base. The end plate is provided with a wide-angle camera and a blowing nozzle which face the transparent window, the inner wall of the horizontal supporting cylinder is evenly provided with a plurality of illuminating lamp beads, and the wide-angle camera, the electric push rod, the blowing nozzle and the illuminating lamp beads are connected with the processor. According to the device, the reliability of monitoring, analyzing and recording the gas flow of the transformer is remarkably improved, and the prejudgment of a worker on a fault of the transformer and the safe operation of the transformer are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of gas protection of transformers, in particular to a transformer gas flow analysis and recording device. Background Art

[0002] When an oil-immersed transformer fails internally, it is often accompanied by an arc short-circuit current, which can easily cause local overheating in the oil tank and decompose the transformer oil to produce gas. Usually, a gas relay is needed to monitor the amount of gas for protection. The gas relay is usually installed on the connecting pipe between the transformer cover and the oil storage cabinet. When an oil-immersed transformer fails internally, the gas generated enters the gas relay and gradually increases. When the set amount is reached, the relay is triggered to connect the specified control circuit and send a signal in time or automatically cut off the transformer. The above-mentioned gas relay sends a warning signal for the total amount of gas, but the development speed of the internal fault of the equipment is unpredictable.

[0003] CN 107731625 A discloses a gas relay, which includes a relay device, a hydraulic sensor and a signal processor. The relay device is filled with insulating oil. The hydraulic sensor is arranged inside the relay device. When the liquid level of the insulating oil changes, the hydraulic sensor generates a current change signal and transmits the current change signal to the signal processor; the signal processor generates the liquid level information of the insulating oil according to the current change signal, which solves the problem that the operation and maintenance personnel cannot know the gas generated by the internal fault of the gas relay when the gas relay fails, so that the operation and maintenance personnel can make timely processing and avoid greater losses caused by the fault. However, there are still the following problems: when the hydraulic sensor fails, the remote control center cannot know the change of the gas volume, cannot alarm in time, and the staff cannot get information feedback in time, which affects the staff's prediction of the fault and the safe operation of the transformer. Utility Model Content

[0004] The purpose of the utility model is to provide a transformer gas flow analysis and recording device with a reasonable structure and reliable use to solve the above-mentioned problems, significantly improve the reliability of transformer gas flow monitoring, analysis and recording, and ensure the staff's prediction of transformer faults and the safe operation of the transformer.

[0005] The technical solution of the utility model is:

[0006] A transformer gas flow analysis and recording device comprises a gas relay body, a liquid level sensor arranged in the gas relay body, a processor connected to the liquid level sensor, and a memory connected to the processor. The technical key points are as follows: a transparent window is arranged on the front side wall of the gas relay body, a horizontal support tube is arranged on the outer periphery of the transparent window, a plurality of horizontal tracks are evenly arranged on the outer peripheral surface of the horizontal support tube, and a cylindrical slide is supported by the horizontal tracks, connecting ears are respectively fixed on both sides of the outer peripheral surface of the slide, an electric push rod is arranged between the connecting ear and the front side wall of the gas relay body, an end plate is fixed on the outer end surface of the slide, a wide-angle camera and a purge nozzle facing the transparent window are arranged on the end plate, the optical axis of the wide-angle camera coincides with the center of the transparent window, a plurality of lighting lamp beads are evenly arranged on the inner wall of the horizontal support tube, and the wide-angle camera, the electric push rod, the purge nozzle and the lighting lamp beads are respectively connected to the processor.

[0007] The above-mentioned transformer gas flow analysis and recording device has a vertical scale on the transparent window.

[0008] The above-mentioned transformer gas flow analysis and recording device has four purge nozzles which are evenly arranged around the wide-angle camera.

[0009] The beneficial effects of the utility model are:

[0010] 1. When working, the processor receives the liquid level information of the liquid level sensor in the gas relay body in real time on the one hand, and receives the liquid surface image information collected by the wide-angle camera on the other hand. When working normally, the error of the liquid level information of the two is within the set range.

[0011] The processor predicts the changing trend of the gas volume according to the above liquid level feedback information, and records the detection data and images in the memory, which is helpful for the staff to predict and solve the transformer failure in time and quickly.

[0012] 2. When the liquid level sensor fails, the processor can continue to receive the liquid level image information collected by the wide-angle camera in real time without interrupting monitoring, and continue to obtain the trend of gas volume changes to achieve the purpose of timely alarm, ensure the staff's prediction of faults, and ensure the safe operation of the transformer.

[0013] 3. When the liquid surface image captured by the wide-angle camera is blurred, start each purge nozzle to blow away the dust or mist on the transparent window to ensure the clarity of the monitoring image. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 Right side view of the middle board;

[0016] Figure 3 It is a schematic diagram of the transparent window side of the utility model;

[0017] Figure 4 It is a circuit schematic diagram of the utility model.

[0018] In the figure: 1. processor, 2. gas relay body, 3. slide seat, 4. end plate, 5. purge nozzle, 6. wide-angle camera, 7. lighting lamp beads, 8. horizontal support cylinder, 9. horizontal track, 10. connecting ear, 11. longitudinal scale, 12. electric push rod, 13. liquid level sensor, 14. transparent window. DETAILED DESCRIPTION

[0019] The utility model is described in detail according to the accompanying drawings of the specification.

[0020] like Figure 1 to Figure 4 As shown, the transformer gas flow analysis and recording device includes a gas relay body 2, a liquid level sensor 13 arranged in the gas relay body 2, a processor 1 connected to the liquid level sensor 13, and a memory connected to the processor 1.

[0021] Among them, the front side wall of the gas relay body 2 is provided with a transparent window 14, and the outer periphery of the transparent window 14 is provided with a horizontal support tube 8. The outer peripheral surface of the horizontal support tube 8 is evenly provided with multiple horizontal rails 9 and the cylindrical slide 3 is supported by the horizontal rails 9. Connecting ears 10 are respectively fixed on both sides of the outer peripheral surface of the slide 3, and an electric push rod 12 is provided between the connecting ears 10 and the front side wall of the gas relay body 2.

[0022] An end plate 4 is fixed to the outer end surface of the slide 3, and a wide-angle camera 6 and a purge nozzle 5 facing the transparent window 14 are arranged on the end plate 4, and the optical axis of the wide-angle camera 6 coincides with the center of the transparent window 14. A plurality of lighting lamp beads 7 are evenly arranged on the inner wall of the horizontal support cylinder 8, and the wide-angle camera 6, the electric push rod 12, the purge nozzle 5 and the lighting lamp beads 7 are respectively connected to the processor 1.

[0023] In this embodiment, a longitudinal scale 11 is provided on the transparent window 14. The number of the purge nozzles 5 is 4, which are evenly arranged around the wide-angle camera 6.

[0024] Working principle:

[0025] 1. During installation, the electric push rod 12 is used to push and pull the slide 3, thereby adjusting the distance between the wide-angle camera 6 and the transparent window 14, so as to achieve the purpose of adjusting the focal length, so that the image captured by the wide-angle camera 6 is clear and reliable. At the same time, the lighting lamp beads 7 are turned on to further ensure the clarity of the image.

[0026] 2. The processor receives the liquid level information fed back by the liquid level sensor 13 and the wide-angle camera 6 in real time. The liquid level information errors of the two can be considered consistent within the set range. The processor 1 predicts the trend of gas volume changes based on the above liquid level feedback information, and records the detection data and images in the memory, which is conducive to the staff to quickly predict and solve transformer faults in a timely manner.

[0027] 3. When the liquid level sensor 13 fails, the processor 1 can continue to receive the liquid level information collected by the wide-angle camera 6 in real time without interrupting monitoring, and continue to obtain the trend of gas volume changes to achieve the purpose of timely alarm, ensure the staff's prediction of faults, and ensure the safe operation of the transformer.

[0028] 4. When the liquid surface image collected by the wide-angle camera 6 is blurred, each purge nozzle 5 is started to blow away the dust or mist on the transparent window 14 to ensure the clarity of the monitoring image.

[0029] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A transformer gas flow analysis and recording device, comprising a gas relay body, a liquid level sensor arranged in the gas relay body, a processor connected to the liquid level sensor, and a memory connected to the processor, characterized in that: A transparent window is provided on the front side wall of the gas relay body, and a horizontal support tube is provided on the outer periphery of the transparent window. A plurality of horizontal tracks are evenly provided on the outer periphery of the horizontal support tube, and a cylindrical slide is supported by the horizontal tracks. Connecting ears are respectively fixed on both sides of the outer periphery of the slide, and an electric push rod is provided between the connecting ears and the front side wall of the gas relay body. An end plate is fixed on the outer end surface of the slide, and a wide-angle camera and a purge nozzle facing the transparent window are provided on the end plate, and the optical axis of the wide-angle camera coincides with the center of the transparent window. A plurality of lighting lamp beads are evenly provided on the inner wall of the horizontal support tube, and the wide-angle camera, the electric push rod, the purge nozzle and the lighting lamp beads are respectively connected to the processor.

2. The transformer gas flow analysis and recording device according to claim 1, characterized in that: The transparent window is provided with a longitudinal scale.

3. The transformer gas flow analysis and recording device according to claim 1, characterized in that: The number of the purge nozzles is 4, which are evenly arranged around the wide-angle camera.

Images