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CN-224231871-U - Transformer fault alarm device

CN224231871UCN 224231871 UCN224231871 UCN 224231871UCN-224231871-U

Abstract

The utility model relates to the technical field of transformers, in particular to a transformer fault alarm device. The device comprises a shell communicating pipe, a protective outer cover, a controller, an upper cover plate, an L-shaped plate, a vertical plate and a sensor component, wherein the shell communicating pipe is arranged at the upper end of a transformer shell and is communicated with the interior of the transformer shell, the upper cover plate is detachably arranged at the upper end of the shell communicating pipe, a first sealing gasket is arranged at the bottom end of the upper cover plate along the circumference of the upper cover plate, the controller is arranged outside the upper cover plate, the protective outer cover is rotatably arranged at the upper end of the transformer shell, the L-shaped plate and the vertical plate are connected with the lower end of the upper cover plate, a snake-shaped gas channel is formed in an inner cavity of the shell communicating pipe through the L-shaped plate and the vertical plate, and the sensor component is arranged at the top position of the tail end of the gas channel. According to the technical scheme, the L-shaped plates and the vertical plates are arranged, so that the serpentine bent gas channel is formed inside the shell communicating pipe, the probability that oil is sputtered to the surface of the sensor is greatly reduced, and the service life of the sensor is prolonged.

Inventors

  • QIAO XIAOQIANG
  • DAI RUIDONG
  • HE KE

Assignees

  • 国能四川天明发电有限公司
  • 南京电研电力自动化股份有限公司

Dates

Publication Date
20260512
Application Date
20250508

Claims (6)

  1. 1. A transformer fault alarm device, comprising: the shell communicating pipe (2) is arranged at the upper end of the transformer shell (1) and is communicated with the inside of the transformer shell (1); The upper cover plate (5), the upper cover plate (5) is detachably arranged at the upper end of the shell communicating pipe (2), and a first sealing gasket (71) is arranged at the bottom end of the upper cover plate (5) along the circumference of the upper cover plate; The controller (4) is arranged outside the upper cover plate (5); the protection outer cover (3) is rotatably arranged at the upper end of the transformer shell (1); An L-shaped plate (8) and a vertical plate (14) which are connected with the lower end of the upper cover plate (5), wherein the inner cavity of the shell communicating pipe (2) forms a snake-shaped gas channel through the L-shaped plate (8) and the vertical plate (14); A sensor assembly mounted at a top position at the end of the gas channel; The liquid level height auxiliary measuring assembly comprises a movable rod (9) which movably penetrates through the bottom end of the L-shaped plate (8), and a top plate (10) and a floating plate (12) which are respectively connected with the upper end and the lower end of the movable rod (9).
  2. 2. A transformer fault warning device according to claim 1, characterized in that the sensor assembly comprises a temperature sensor (15), a distance measuring sensor (16) and a smoke sensor.
  3. 3. The transformer fault alarm device according to claim 2, wherein the controller (4) is a PLC controller or a microprocessor controller, the protective cover (3) is provided with a signal transceiver, and the controller (4) is electrically connected with the temperature sensor (15), the distance measuring sensor (16), the smoke sensor and the signal transceiver.
  4. 4. The transformer fault alarm device according to claim 1, wherein a lower sealing plate (6) is arranged at the bottom end of the upper cover plate (5), a second sealing gasket (72) is arranged on the periphery of the lower sealing plate (6), and the second sealing gasket (72) is in clearance fit with the inner side of the shell communicating pipe (2).
  5. 5. A transformer failure warning device according to claim 1, characterized in that the outer periphery of the L-shaped plate (8) and the outer periphery of the riser (14) are provided with a third gasket (73) and a fourth gasket (74), respectively.
  6. 6. A transformer fault alarm device according to claim 1, characterized in that the L-shaped plate (8) is provided with an oil return pipe (13), and the oil return pipe (13) is provided with a one-way valve.

Description

Transformer fault alarm device Technical Field The utility model relates to the technical field of transformers, in particular to a transformer fault alarm device. Background The transformer mainly comprises iron core, winding, oil tank, conservator, insulating sleeve, etc., the oil tank is the shell of the transformer, build-in iron core and winding and full of transformer oil, make iron core and winding soak in the oil, the transformer oil can play the insulating role, in the high-capacity transformer, in order to make the heat that the loss of iron core sent can be taken away fully by the insulating oil when circulating, in order to reach good cooling effect, usually be equipped with the cooling duct in the iron core. In order to realize the monitoring of internal faults of a transformer, such as temperature monitoring, smoke monitoring and oil leakage detection, a detection box is usually arranged at the top end of a transformer shell and is communicated with the inside of the shell, a sensor is arranged in the detection box, but the transformer is transported or arranged in a process of being possibly caused to shake oil in the transformer, the oil is easily sputtered to the surface of the sensor when being rocked, and various negative effects on the performance and the measurement result of the sensor can be generated. Disclosure of utility model The utility model aims to solve the problems in the background technology and provides a transformer fault alarm device. The technical scheme of the utility model is that the transformer fault alarm device comprises: The shell communicating pipe is arranged at the upper end of the transformer shell and is communicated with the inside of the transformer shell; The upper cover plate is detachably arranged at the upper end of the shell communicating pipe, and a first sealing gasket is arranged at the bottom end of the upper cover plate along the circumferential direction of the upper cover plate; The controller is arranged at the outer side of the upper cover plate; the protective outer cover is rotatably arranged at the upper end of the transformer shell; An L-shaped plate and a vertical plate connected with the lower end of the upper cover plate, wherein the inner cavity of the shell communicating pipe forms a snake-shaped gas channel through the L-shaped plate and the vertical plate; A sensor assembly mounted at a top position at the end of the gas channel; the liquid level height auxiliary measuring assembly comprises a movable rod which movably penetrates through the bottom end of the L-shaped plate, and a top plate and a floating plate which are respectively connected with the upper end and the lower end of the movable rod. Preferably, the sensor assembly comprises a temperature sensor, a distance measurement sensor and a smoke sensor. Preferably, the controller is a PLC controller or a microprocessor controller, the protective housing is provided with a signal transceiver, and the controller is electrically connected with the temperature sensor, the ranging sensor, the smoke sensor and the signal transceiver. Preferably, the bottom end of the upper cover plate is provided with a lower sealing plate, the periphery of the lower sealing plate is provided with a second sealing gasket, and the second sealing gasket is in clearance fit with the inner side of the shell communicating pipe. Preferably, the third gasket and the fourth gasket are respectively mounted on the outer periphery of the L-shaped plate and the outer periphery of the vertical plate. Preferably, an oil return pipe is arranged on the L-shaped plate, and a one-way valve is arranged on the oil return pipe. Compared with the prior art, the oil liquid sputtering sensor has the beneficial technical effects that the L-shaped plate and the vertical plate are arranged in the technical scheme, so that the serpentine-shaped bent gas channel is formed in the shell communicating pipe, and the sensor assembly is arranged at the top position of the tail end of the gas channel, so that the probability of sputtering oil liquid onto the surface of the sensor is greatly reduced, and the service life of the sensor is prolonged. Drawings Fig. 1 and 2 are schematic structural views of the present utility model. Fig. 3 is a sectional view of a communication tube of the housing of the present utility model. Reference numeral 1, a transformer housing; 2, a shell communicating pipe, 3, a protective outer cover, 4, a controller, 5, an upper cover plate, 6, a lower sealing plate, 71, a first sealing gasket, 72, a second sealing gasket, 73, a third sealing gasket, 74, a fourth sealing gasket, 8, an L-shaped plate, 9, a movable rod, 10, a top plate, 11, a limiting ring, 12, a floating plate, 13, an oil return pipe, 14, a vertical plate, 15, a temperature sensor and 16, a distance measuring sensor. Detailed Description Example 1 As shown in fig. 1 to 3, the transformer fault alarm device provided in this embodiment include