Transformer expansion tank capsule damage monitoring device and working method thereof

Abstract

The invention relates to a transformer oil conservator capsule damage monitoring device and a working method thereof.The monitoring device comprises an oil conservator box body, a monitoring mechanism and an air bag mechanism, the oil conservator box body is of a hollow cylinder structure, the air bag mechanism is arranged in the oil conservator box body, and the air bag mechanism comprises an upper connecting plate, a lower connecting plate, a filtering respirator and an air bag pipe; the upper connecting plate is fixed at the top of the inner wall of the conservator box body; the infrared receiver is used for receiving a transmitting signal of the infrared transmitter, the processor is used for calculating the distance between the infrared receiver and the infrared transmitter according to the time difference of reflection, then the liquid level information at the moment can be known, and when the air bag pipe is damaged, air in the air bag pipe leaks, the air bag pipe is wizened, and the air bag pipe is prevented from being damaged. The distance between the upper connecting plate and the lower connecting plate is monitored through the monitoring mechanism, and when the distance between the upper connecting plate and the lower connecting plate reaches a preset threshold value, it is judged that the air bag pipe is damaged, an alarm is given out, and potential safety hazards are avoided.

Description

Technical Field

[0001] The invention relates to the field of transformer oil pillows, and in particular to a transformer oil pillow capsule damage monitoring device and a working method thereof. Background Art

[0002] As the hub equipment of the power system, the operating reliability of the transformer is closely related to the safety and stability of the power system. The insulating material immersed in the transformer oil can not only improve the internal insulation strength of the transformer, but also avoid moisture erosion. Therefore, the amount of insulating oil inside the transformer not only affects the insulation level of the transformer equipment, but also affects the service life of the internal insulating material of the transformer and the heat dissipation capacity during operation. Therefore, the transformer usually needs to be used with an oil pillow. When the temperature of the transformer rises, the cooling oil in the transformer expands due to heat, and part of the cooling oil in the transformer will flow from the transformer into the oil pillow; when the temperature of the transformer drops, the cooling oil in the transformer shrinks in volume due to cooling, and part of the cooling oil in the oil pillow will flow from the oil pillow into the transformer. Therefore, the common oil pillow is used as a reserve tank for insulating oil.

[0003] The fully sealed capsule oil pillow is a relatively important oil compensation device used on power transformers. The existing oil storage cabinet structure has the problem of capsule leakage, and the existing fully sealed oil storage cabinet has no corresponding means to monitor the internal situation. When the capsule leaks, there is no way to know, and when the capsule is damaged, the oil gauge will display a false oil level, causing certain safety hazards. Summary of the invention

[0004] 1. Technical issues to be resolved In order to solve the above problems in the prior art, the purpose of the present invention is to provide a transformer oil pillow capsule damage monitoring device and a working method thereof, wherein the transformer oil pillow capsule damage monitoring device can monitor whether the airbag tube is damaged to avoid safety hazards.

[0005] (II) Technical solution In order to achieve the above object, the main technical solutions adopted by the present invention include: A transformer oil pillow capsule damage monitoring device comprises an oil pillow box body that can be connected to a cavity for storing cooling oil of the transformer, a monitoring mechanism and an air bag mechanism; The oil pillow box body is a hollow cylindrical structure; The airbag mechanism is arranged in the oil pillow box, and the airbag mechanism includes an upper connecting plate, a lower connecting plate, a filter respirator and an airbag tube; The upper connecting plate is fixed to the top of the inner wall of the oil pillow box and is connected to the filter respirator through an air pipe; A top end of the airbag tube is connected to the upper connecting plate, and a bottom end of the airbag tube is connected to the lower connecting plate; The inner space of the air bag tube is connected to the filter respirator through the trachea; The monitoring mechanism includes an infrared transmitter, an infrared receiver and a processor; The infrared emitter is arranged at the bottom of the upper connecting plate; The infrared receiver is arranged on the upper surface of the lower connecting plate and is arranged opposite to the infrared transmitter; The infrared transmitter and the infrared receiver are both electrically connected to the processor; The infrared transmitter and the infrared receiver are both electrically connected to the processor. The infrared receiver receives the transmission signal of the infrared transmitter. The processor calculates the distance between the infrared receiver and the infrared transmitter according to the time difference of reflection, and then obtains the liquid level information at that time.

[0006] Preferably, it also includes a liquid level display mechanism, which includes a magnetic ring, a slide rail, a slider and a magnetic suction block; The magnetic ring is sleeved on the surface of the lower connecting plate; The slide rail is vertically arranged on the surface of the oil pillow box; The slider is slidably mounted on the slide rail; The magnetic block is installed in the slider, and the magnetic ring is fixed on the lower connecting plate and can move with the lower connecting plate. When the lower connecting plate and the magnetic ring move, the magnetic block and the slider that have an adsorption effect on the magnetic ring rise and fall synchronously, thereby obtaining the oil level information inside the oil pillow box, and can be reconfirmed with the liquid level information obtained by the monitoring mechanism.

[0007] Preferably, the lower connecting plate is adapted to the cross-section of the inner cavity of the oil pillow case, grooves are provided on both sides of the lower connecting plate, and guide rods corresponding to the grooves are provided on the inner wall of the oil pillow case.

[0008] Preferably, the monitoring mechanism further comprises a waterproof cover, and the infrared transmitter and the infrared receiver are both covered in the waterproof cover.

[0009] Preferably, the airbag tube is a corrugated tube.

[0010] Preferably, the monitoring mechanism further includes a display and an alarm, both of which are electrically connected to the processor, the display is used to display the liquid level information, and the alarm serves as an alarm when the airbag tube ruptures.

[0011] Preferably, the upper connecting plate and the lower connecting plate are both made of ABS material.

[0012] Preferably, an air release valve and a discharge valve are respectively provided on the top and bottom of the oil pillow box.

[0013] The invention discloses a working method of a transformer oil pillow capsule damage monitoring device. When the temperature of the transformer rises, the cooling oil in the transformer expands due to heat, and a part of the cooling oil in the transformer flows from the transformer into the oil pillow box. When the cooling oil in the oil pillow box increases, the lower connecting plate rises as the oil level rises. Similarly, when the cooling oil in the oil pillow box decreases, the lower connecting plate drops as the oil level drops. The airbag mechanism can ensure the stability of the air pressure inside the oil pillow box. The infrared receiver receives the transmission signal of the infrared transmitter. The processor calculates the distance between the infrared receiver and the infrared transmitter according to the time difference of reflection, and then obtains the liquid level information at this time. When the airbag tube is damaged, the gas inside the airbag tube leaks, causing the airbag tube to shrink, and then the lower connecting plate rises rapidly. The distance between the upper connecting plate and the lower connecting plate is monitored by the monitoring mechanism. When the distance between the upper connecting plate and the lower connecting plate reaches a preset threshold, it is determined that the airbag tube is damaged and an alarm is issued to avoid safety hazards.

[0014] (III) Beneficial effects The beneficial effects of the present invention are as follows: when the cooling oil in the oil pillow case increases, the lower connecting plate rises as the oil level rises. Similarly, after the cooling oil in the oil pillow case decreases, the lower connecting plate drops as the oil level drops. The airbag mechanism can ensure that the air pressure inside the oil pillow case is stable. The infrared receiver receives the transmission signal of the infrared transmitter, and the processor calculates the distance between the infrared receiver and the infrared transmitter based on the time difference of reflection, and then the liquid level information at this time can be obtained. When the airbag tube is damaged, the gas inside the airbag tube leaks, causing the airbag tube to shrink, and then the lower connecting plate rises rapidly. The distance between the upper connecting plate and the lower connecting plate is monitored by the monitoring mechanism. When the distance between the upper connecting plate and the lower connecting plate reaches a preset threshold, it is determined that the airbag tube is damaged and an alarm is issued to avoid safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a transformer oil pillow capsule damage monitoring device; Figure 2 It is a schematic diagram of the combined structure of the monitoring mechanism and the airbag mechanism; Figure 3 It is a structural schematic diagram of the liquid level display mechanism.

[0016] Description of reference numerals: 1. Oil pillow box; 2. Airbag mechanism; 21. Upper connecting plate; 22. Air bag tube; 23. Lower connecting plate; 24. Guide rod; 25. Filter respirator; 3. Monitoring mechanism; 31. Infrared transmitter; 32. Infrared receiver; 4. Liquid level display mechanism; 41. Slide rail; 42. Magnetic block; 43. Sliding block; 5. Air release valve; 6. Discharge valve. DETAILED DESCRIPTION

[0017] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0018] Please refer to Figure 1 to Figure 2 , the first embodiment of the present invention: A transformer oil pillow capsule damage monitoring device comprises an oil pillow box 1, a monitoring mechanism 3 and an airbag mechanism 2; the oil pillow box 1 is a hollow cylindrical structure; The airbag mechanism 2 is arranged in the oil pillow case 1, and the airbag mechanism 2 includes an upper connecting plate 21, a lower connecting plate 23, a filter respirator 25 and an airbag tube 22; the upper connecting plate 21 is fixed to the top of the inner wall of the oil pillow case, and is connected to the filter respirator 25 through an air pipe; the top end of the airbag tube 22 is connected to the upper connecting plate 21, and the bottom end of the airbag tube is connected to the lower connecting plate 23; the internal space of the airbag tube 22 is connected to the filter respirator 25 through the air pipe; The monitoring mechanism 3 includes an infrared transmitter 31, an infrared receiver 32 and a processor; The infrared transmitter 31 is arranged at the bottom of the upper connecting plate 21; the infrared receiver 32 is arranged on the upper surface of the lower connecting plate 23 and is arranged opposite to the infrared transmitter; the infrared transmitter and the infrared receiver are both electrically connected to the processor; During use, when the temperature of the transformer rises, the cooling oil in the transformer expands due to heat, and a part of the cooling oil in the transformer will flow from the transformer into the oil pillow box 1. When the cooling oil in the oil pillow box 1 increases, the lower connecting plate 24 rises as the oil level rises. Similarly, when the cooling oil in the oil pillow box decreases, the lower connecting plate drops as the oil level drops. The airbag mechanism 2 can ensure the stability of the air pressure inside the oil pillow box 1. The infrared receiver receives the transmission signal of the infrared transmitter. The processor calculates the distance between the infrared receiver and the infrared transmitter based on the time difference of reflection, and then the liquid level information at this time can be obtained. When the airbag tube is damaged, the gas inside the airbag tube leaks, causing the airbag tube to shrink, and then the lower connecting plate rises rapidly. The distance between the upper connecting plate and the lower connecting plate is monitored by the monitoring mechanism. When the distance between the upper connecting plate and the lower connecting plate reaches a preset threshold, it is determined that the airbag tube is damaged and an alarm is issued to avoid safety hazards.

[0019] refer to Figure 3In this embodiment, a liquid level display mechanism 4 is also included, which includes a magnetic ring, a slide rail 41, a slider 43 and a magnetic block 42; the magnetic ring is fixedly arranged on the lower connecting plate 23; the slide rail 41 is vertically arranged on the oil pillow box 1; the slider 43 is slidably installed on the slide rail 41; the magnetic block 42 is installed in the slider 43; the magnetic ring and the slide rail 41 can be arranged on the corresponding circumferential side of the lower connecting plate 23. When in use, the magnetic ring is fixed on the lower connecting plate 23 and moves with the lower connecting plate. Then the slider 43 is placed at the starting end of the top of the slide rail 41, so that it slides down naturally under the action of gravity. When it moves to the position corresponding to the magnetic ring, under the action of the magnetic block 42, the slider 43 stays on the slide rail, thereby obtaining the information of the oil level inside the oil pillow box, and can be reconfirmed with the liquid level information obtained by the monitoring mechanism.

[0020] In this embodiment, the lower connecting plate is adapted to the cross-section of the inner cavity of the oil pillow box, grooves are provided on both sides of the lower connecting plate, and guide rods 24 corresponding to the grooves are provided on the inner wall of the oil pillow box; when in use, the guide rods are provided to ensure the lifting and lowering direction of the lower connecting plate.

[0021] In this embodiment, the monitoring mechanism 3 further includes a waterproof cover (transparent), and the infrared transmitter and the infrared receiver are both covered in the waterproof cover, and the waterproof cover is used to protect the infrared transmitter and the infrared receiver and extend their service life.

[0022] In this embodiment, the airbag tube is a corrugated tube.

[0023] In this embodiment, the monitoring mechanism also includes a display and an alarm. The display and the alarm are electrically connected to the processor. The display is used to display the liquid level information, and the alarm serves as an alarm when the airbag tube ruptures.

[0024] In this embodiment, the upper connecting plate and the lower connecting plate are both made of ABS material. ABS plastic has the common properties of the three components. A makes it resistant to chemical corrosion, heat resistance, and has a certain surface hardness, and B makes it highly elastic and tough, and light.

[0025] In this embodiment, an air release valve and a discharge valve are respectively provided on the top and the bottom of the oil pillow housing.

[0026] The working principle of the present invention is as follows: When the temperature of the transformer rises, the cooling oil in the transformer expands due to heat, and a part of the cooling oil in the transformer will flow from the transformer into the oil pillow box. When the cooling oil in the oil pillow box increases, the lower connecting plate rises as the oil level rises. Similarly, when the cooling oil in the oil pillow box decreases, the lower connecting plate drops as the oil level drops. The airbag mechanism can ensure the stability of the air pressure inside the oil pillow box. The infrared receiver receives the transmission signal of the infrared transmitter, and the processor calculates the distance between the infrared receiver and the infrared transmitter based on the time difference of reflection, and then the liquid level information at this time can be obtained. When the airbag tube is damaged, the gas inside the airbag tube leaks, causing the airbag tube to shrink, and then the lower connecting plate rises rapidly. The distance between the upper connecting plate and the lower connecting plate is monitored by the monitoring mechanism. When the distance between the upper connecting plate and the lower connecting plate reaches the preset threshold, it is determined that the airbag tube is damaged and an alarm is issued to avoid safety hazards.

[0027] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A transformer oil pillow capsule damage monitoring device, characterized in that: It comprises an oil pillow box (1) which can be communicated with a cavity for storing cooling oil of a transformer, a monitoring mechanism (3) and an air bag mechanism (2); The oil pillow box (1) is a hollow cylindrical structure; The airbag mechanism (2) is arranged in the oil pillow housing (1), and the airbag mechanism (2) comprises an upper connecting plate (21), a lower connecting plate (23), a filter respirator (25), and an airbag tube (22); The upper connecting plate (21) is fixed to the top of the inner wall of the oil pillow housing (1) and is connected to the filter respirator (25) via an air pipe; A top end of the airbag tube (22) is connected to the upper connecting plate (21), and a bottom end of the airbag tube (22) is connected to the lower connecting plate (23); The inner space of the air bag tube (22) is connected to the filter respirator (25) through the trachea; The monitoring mechanism (3) comprises an infrared transmitter (31), an infrared receiver (32) and a processor; The infrared emitter (31) is arranged at the bottom of the upper connecting plate (21); The infrared receiver (32) is arranged on the upper surface of the lower connecting plate (23) and is arranged opposite to the infrared transmitter (31); The infrared transmitter (31) and the infrared receiver (32) are both electrically connected to the processor; The infrared transmitter (31) and the infrared receiver (32) are both electrically connected to the processor. The infrared receiver (32) receives the transmission signal of the infrared transmitter (31). The processor calculates the distance between the infrared receiver (32) and the infrared transmitter (31) based on the time difference of reflection, thereby obtaining the liquid level information at that time.

2. A transformer oil pillow capsule damage monitoring device according to claim 1, characterized in that: It also includes a liquid level display mechanism (4), wherein the liquid level display mechanism (4) includes a magnetic ring, a slide rail (41), a slide block (43), and a magnetic attraction block (42); The magnetic ring is arranged on the lower connecting plate (23); The slide rail (41) is vertically arranged on the surface of the oil pillow box (1); The sliding block (43) is slidably mounted on the sliding rail (41); The magnetic block (42) is installed in the slider (43), and the magnetic ring is fixed on the lower connecting plate (23) and can move with the lower connecting plate (23). When the lower connecting plate (23) and the magnetic ring move, the magnetic block (42) and the slider (43) that have an adsorption effect on the magnetic ring rise and fall synchronously, thereby obtaining information on the oil level inside the oil pillow box (1), and can be reconfirmed with the liquid level information obtained by the monitoring mechanism (3).

3. A transformer oil pillow capsule damage monitoring device according to claim 1, characterized in that: The lower connecting plate (23) is adapted to the cross section of the inner cavity of the oil pillow housing (1), grooves are provided on both sides of the lower connecting plate (23), and the inner wall of the oil pillow housing (1) is provided with guide rods (24) corresponding to the grooves.

4. A transformer oil pillow capsule damage monitoring device according to claim 1, characterized in that: The monitoring mechanism (3) further comprises a waterproof cover, and the infrared transmitter (31) and the infrared receiver (32) are both housed in the waterproof cover.

5. The transformer oil pillow capsule damage monitoring device according to claim 1 is characterized in that: The airbag tube (22) is a corrugated tube.

6. A transformer oil pillow capsule damage monitoring device according to claim 1, characterized in that: The monitoring mechanism (3) further comprises a display and an alarm, wherein the display and the alarm are both electrically connected to the processor, the display is used to display liquid level information, and the alarm functions as an alarm when the airbag tube (22) is ruptured.

7. A transformer oil pillow capsule damage monitoring device according to claim 1, characterized in that: The upper connecting plate (21) and the lower connecting plate (23) are both made of ABS material.

8. The transformer oil pillow capsule damage monitoring device according to claim 1 is characterized in that: An air release valve (5) and a discharge valve (6) are respectively provided at the top and bottom of the oil pillow housing (1).

9. A working method of the transformer oil pillow capsule damage monitoring device according to any one of claims 1 to 8, characterized in that: During operation, when the temperature of the transformer rises, the cooling oil in the transformer expands due to the heat, and a portion of the cooling oil in the transformer flows from the transformer into the oil pillow box (1). When the cooling oil in the oil pillow box (1) increases, the lower connecting plate (23) rises as the oil level rises. Similarly, when the cooling oil in the oil pillow box (1) decreases, the lower connecting plate (23) falls as the oil level falls. The airbag mechanism (2) can ensure that the air pressure inside the oil pillow box (1) is stable. The infrared receiver (32) receives the transmission signal of the infrared transmitter (31), and the processor receives the transmission signal according to the reflection. The time difference is used to calculate the distance between the infrared receiver (32) and the infrared transmitter (31), thereby obtaining the liquid level information at that time; when the airbag tube (22) is damaged, the gas inside the airbag tube (22) leaks, causing the airbag tube (22) to shrink, thereby causing the lower connecting plate (23) to rise rapidly, and the distance between the upper connecting plate (21) and the lower connecting plate (23) is monitored by the monitoring mechanism (3). When the distance between the upper connecting plate (21) and the lower connecting plate (23) reaches a preset threshold, it is determined that the airbag tube (22) is damaged, and an alarm is issued to avoid safety hazards.

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