Humidity alarm device for oil-immersed power transformer

Abstract

The utility model provides a humidity alarm device for an oil-immersed power transformer. The humidity alarm device for the oil-immersed power transformer comprises a protection box and a supporting net plate fixedly installed in the protection box, and a transformer body is placed on the supporting net plate; the mounting plate is assembled on the transformer body, and the mounting plate is detachably connected with an oil storage tank of the transformer body; the humidity sensor is fixedly mounted on the mounting plate; the alarm is arranged at the top of the protection box; and the dustproof mechanism is arranged in the protection box and is used for performing dustproof treatment on the protection box. The humidity alarm device for the oil-immersed power transformer has the advantages that the humidity of the transformer body is monitored through the humidity sensor, meanwhile, alarm operation is carried out through the alarm, people can know abnormal operation of the transformer body in time, and then follow-up maintenance operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a humidity alarm device for an oil-immersed power transformer. Background Art

[0002] As one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings, oil-immersed power transformer reduces the 10(6)kV or 35kV network voltage to the 230 / 400V bus voltage used by users. When the oil-immersed power transformer is overloaded for a long time, the transformer coil insulation material will age seriously and the transformer insulation cooling oil will deteriorate rapidly. When the transformer is overloaded and exposed to sunlight, the transformer temperature rises. However, the load drops suddenly at night, and the ambient temperature is low, so the transformer oil temperature becomes low. The temperature difference in one day varies greatly. Although there is a moisture absorption device in the breathing duct of the oil-immersed transformer, once water enters the transformer, it will accelerate the deterioration of the transformer oil and reduce the internal insulation strength of the transformer. When the insulation drops to a certain level, short-circuit faults between turns, between layers and other parts are prone to occur.

[0003] At present, most of the existing transformers are unable to monitor and alarm the humidity in the transformer, which results in the inability to promptly know when water enters the transformer, making it inconvenient to use.

[0004] Therefore, it is necessary to provide a new oil-immersed power transformer humidity alarm device to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the technical problem that the existing transformer cannot perform humidity monitoring and alarm, the utility model provides a humidity alarm device for an oil-immersed power transformer.

[0006] The utility model provides an oil-immersed power transformer humidity alarm device comprising: a protection box and a supporting mesh plate fixedly installed in the protection box, a transformer body being placed on the supporting mesh plate; a mounting plate, the mounting plate being assembled on the transformer body, the mounting plate being detachably connected to an oil storage tank of the transformer body; a humidity sensor, the humidity sensor being fixedly installed on the mounting plate; an alarm, the alarm being arranged on the top of the protection box; and a dustproof mechanism, the dustproof mechanism being arranged in the protection box for dustproof treatment of the protection box.

[0007] Preferably, a mounting tube is fixedly installed on the top of the protection box, an electric telescopic rod is fixedly installed in the mounting tube, a connecting plate is fixedly installed on the output rod of the electric telescopic rod, and the connecting plate is fixedly connected to the alarm.

[0008] Preferably, annular mounting frames are fixedly mounted on the connecting plate and the protective box, annular waterproof plates are slidably mounted on the two annular mounting frames, positioning rods are slidably mounted on the two annular mounting frames, a plurality of positioning rods are slidably connected to the annular waterproof plates, Velcro is installed on the two annular mounting frames and the plurality of positioning rods, and the plurality of Velcro are bonded to each other.

[0009] Preferably, the dustproof mechanism includes a heat dissipation port, two L-shaped plates, a dustproof net and a limiting mechanism, the heat dissipation port is opened on one side of the protective box, the two L-shaped plates are fixedly installed on one side of the protective box, and the dustproof net is slidably installed on the two L-shaped plates.

[0010] Preferably, the limiting mechanism includes a limiting rod and a compression spring, the limiting rod is slidably mounted on the L-shaped plate, the limiting rod is slidably connected to the dustproof net, a blocking plate is fixedly sleeved on the limiting rod, and the compression spring is sleeved on the limiting rod, and both ends of the compression spring are respectively fixedly connected to the L-shaped plate and the blocking plate.

[0011] Preferably, the protective box consists of a lower shell and two half shells, the two half shells are slidingly connected to the lower shell, sealing rings are installed on the two half shells, the two sealing rings are in contact, and any one of the half shells is equipped with a fixing bolt, which is threadedly connected to the other half shell.

[0012] Preferably, a slide plate is fixedly mounted on one side of the lower shell, two slide grooves are provided on the top of the slide plate, and a slide rod is fixedly mounted on one side of the two half shells, and the two slide rods are slidably connected to the two slide grooves respectively.

[0013] Compared with the related art, the oil-immersed power transformer humidity alarm device provided by the utility model has the following beneficial effects:

[0014] The utility model provides a humidity alarm device for an oil-immersed power transformer:

[0015] 1. The humidity of the transformer body is monitored by the humidity sensor, and the alarm is used to alarm, which is helpful for people to know the abnormal operation of the transformer body in time, and then facilitate the subsequent maintenance work. The alarm is driven to slide up by the electric telescopic rod, which is convenient for people in the distance to observe the location of the alarm;

[0016] 2. The electric telescopic rod is protected by a circular waterproof plate to ensure that the electric telescopic rod will not come into contact with rainwater, and the protection effect is better. The dustproof net is used to prevent dust from entering the protective box, and the dustproof effect is better. The dustproof net is fixed by a limiting mechanism to ensure that it will not separate from the L-shaped plate, and the limiting effect is better;

[0017] 3. The connection between the two half shells is sealed by a sealing ring to ensure that rainwater does not enter the protective box through the connection between the two plate shells. The sealing effect is good. The sliding rod and the slide plate are slidably connected to limit the half shells, which is conducive to the subsequent assembly of the two half shells. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the main cross-sectional structure of a preferred embodiment of the oil-immersed power transformer humidity alarm device provided by the utility model;

[0019] Figure 2 A schematic side view of a preferred embodiment of the humidity alarm device for an oil-immersed power transformer provided by the utility model;

[0020] Figure 3 for Figure 1 An enlarged structural diagram of part A shown in FIG.

[0021] Figure 4 for Figure 1 An enlarged schematic diagram of the structure of part B shown in FIG.

[0022] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of part C shown in FIG.

[0023] Numbers in the figure: 1. Protection box; 2. Support mesh plate; 3. Transformer body; 4. Mounting plate; 5. Humidity sensor; 6. Alarm; 7. Mounting tube; 8. Electric telescopic rod; 9. Connecting plate; 10. Ring mounting frame; 11. Ring waterproof plate; 12. Positioning rod; 13. Heat dissipation port; 14. L-shaped plate; 15. Dustproof net; 16. Limit rod; 17. Compression spring; 18. Slide plate; 19. Slide rod. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0025] Please refer to Figure 1-Figure 5 ,in, Figure 1 A schematic diagram of the main cross-sectional structure of a preferred embodiment of the oil-immersed power transformer humidity alarm device provided by the utility model; Figure 2 A schematic side view of a preferred embodiment of the humidity alarm device for an oil-immersed power transformer provided by the utility model; Figure 3 for Figure 1 An enlarged structural diagram of part A shown in FIG.

[0026] Figure 4 for Figure 1 An enlarged schematic diagram of the structure of part B shown in FIG. Figure 5 for Figure 1 The enlarged structural diagram of the C part is shown in the figure. The humidity alarm device for oil-immersed power transformer comprises: a protection box 1 and a support mesh plate 2 fixedly installed in the protection box 1, on which a transformer body 3 is placed; a mounting plate 4, which is mounted on the transformer body 3 and is detachably connected to the oil storage tank of the transformer body 3; a humidity sensor 5, which is fixedly installed on the mounting plate 4; an alarm 6, which is arranged on the top of the protection box 1; a dustproof mechanism, which is arranged in the protection box 1 for dustproof treatment of the protection box 1, and the humidity of the transformer body 3 is monitored by the humidity sensor 5, and an alarm operation is performed by the alarm 6, which is conducive to people knowing the abnormal operation of the transformer body 3 in time, and then facilitating subsequent maintenance operations.

[0027] A mounting tube 7 is fixedly installed on the top of the protective box 1, and an electric telescopic rod 8 is fixedly installed in the mounting tube 7. A connecting plate 9 is fixedly installed on the output rod of the electric telescopic rod 8. The connecting plate 9 is fixedly connected to the alarm 6. The alarm 6 is driven to slide up by the electric telescopic rod 8, so that people at a distance can observe the location of the alarm 6.

[0028] An annular mounting frame 10 is fixedly installed on the connecting plate 9 and the protective box 1, an annular waterproof plate 11 is slidably installed on the two annular mounting frames 10, a positioning rod 12 is slidably installed on the two annular mounting frames 10, and multiple positioning rods 12 are slidably connected to the annular waterproof plate 11, and Velcro is installed on the two annular mounting frames 10 and multiple positioning rods 12, and multiple Velcros are bonded to each other. The electric telescopic rod 8 is protected by the annular waterproof plate 11 to ensure that the electric telescopic rod 8 will not come into contact with rainwater, and the protection effect is better.

[0029] The dustproof mechanism includes a heat dissipation port 13, two L-shaped plates 14, a dustproof net 15 and a limiting mechanism. The heat dissipation port 13 is opened on one side of the protective box 1. The two L-shaped plates 14 are fixedly installed on one side of the protective box 1. The dustproof net 15 is slidably installed on the two L-shaped plates 14. Dust is prevented from entering the protective box 1 by the dustproof net 15 to ensure that dust does not enter the protective box 1. The dustproof effect is better.

[0030] The limiting mechanism includes a limiting rod 16 and a compression spring 17. The limiting rod 16 is slidably installed on the L-shaped plate 14. The limiting rod 16 is slidably connected to the dustproof net 15. A blocking piece is fixedly sleeved on the limiting rod 16. The compression spring 17 is sleeved on the limiting rod 16. Both ends of the compression spring 17 are respectively fixedly connected to the L-shaped plate 14 and the blocking piece. The dustproof net 15 is fixed by the limiting mechanism to ensure that it will not separate from the L-shaped plate 14, and the limiting effect is better.

[0031] The protective box 1 consists of a lower shell and two half shells, the two half shells are slidably connected to the lower shell, and sealing rings are installed on the two half shells. The two sealing rings are in contact with each other. A fixing bolt is installed on any half shell, and the fixing bolt is threadedly connected to the other half shell. The connection between the two half shells is sealed by a sealing ring to ensure that rainwater will not enter the protective box 1 through the connection between the two plate shells, and the sealing effect is good.

[0032] A slide plate 18 is fixedly installed on one side of the lower shell, and two slide grooves are provided on the top of the slide plate 18. A slide rod 19 is fixedly installed on one side of the two half shells. The two slide rods 19 are slidably connected to the two slide grooves respectively. The half shells are limited by the sliding connection between the slide rod and the slide plate, which is beneficial to the subsequent assembly of the two half shells.

[0033] It is worth noting that the circuits, electronic components and modules involved in the present utility model are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present utility model does not involve improvements to software and methods.

[0034] The working principle of the oil-immersed power transformer humidity alarm device provided by the utility model is as follows:

[0035] This solution also has an electric control cabinet, which is installed on the equipment. When in use, each electrical device can be started and operated through the electric control cabinet. The power connection method of each electrical device is an existing mature technology, which is a well-known technology for people in this field and will not be described in detail here.

[0036] When in use, the humidity sensor 5 is first electrically connected to the external humidity control system, and then, according to the operation requirements of the transformer body 3, a suitable humidity threshold is set, and then the humidity sensor 5 continuously monitors the transformer oil in the oil storage tank of the transformer body 3. When the humidity inside the transformer body 3 exceeds or falls below the threshold, the humidity control system will sound an alarm, and at the same time, the humidity control system sends a signal to the alarm 6, so that the alarm 6 starts an alarm and warns the workers around the transformer body 3, which is beneficial to the subsequent maintenance work of the transformer body 3;

[0037] When the alarm 6 initiates an alarm, the electric telescopic rod 8 is activated, so that the electric telescopic rod 8 drives the alarm 6 to slide upward, which is conducive to the staff at a distance to see the alarm 6. At the same time, when the alarm 6 slides, the annular waterproof plate 11 is released, so that the electric telescopic rod 8 can be protected in the rainy season to ensure that it will not come into contact with rainwater, which is better for use;

[0038] When the dust screen 15 needs to be cleaned, the protective box 1 is first disassembled, so that the half shell drives the sliding rod 19 to slide along the sliding groove, and then the half shell is disassembled, and then the limit rod 16 is pulled to slide the limit rod 16 away from the dust screen 15 to stretch the compression spring 17. After that, the dust screen 15 can be pulled out of the L-shaped plate 14 and cleaned.

[0039] Compared with the related art, the oil-immersed power transformer humidity alarm device provided by the utility model has the following beneficial effects:

[0040] The utility model provides an oil-immersed power transformer humidity alarm device, which monitors the humidity of the transformer body 3 through the humidity sensor 5, and performs an alarm operation through the alarm 6, which is beneficial for people to know the abnormal operation of the transformer body 3 in time, and then facilitates the subsequent maintenance operation, drives the alarm 6 to slide up through the electric telescopic rod 8, and facilitates people at a distance to observe the location of the alarm 6, protects the electric telescopic rod 8 through the annular waterproof plate 11, ensures that the electric telescopic rod 8 will not contact with rainwater, and has a good protection effect, performs dust prevention operation on dust through the dustproof net 15, ensures that dust will not enter the protection box 1, and has a good dustproof effect, fixes the dustproof net 15 through a limiting mechanism, ensures that it will not separate from the L-shaped plate 14, and has a good limiting effect, seals the connection between the two semi-shells through a sealing ring, ensures that rainwater will not enter the protection box 1 through the connection between the two plate shells, and has a good sealing effect, and limits the semi-shells through the sliding rod 19 and the sliding plate 18, which is beneficial for the subsequent assembly of the two semi-shells.

[0041] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. However, on the premise that technical personnel in this field understand the principle of the above-mentioned utility model, they can clearly know the details of its power mechanism, power supply system and control system.

[0042] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A humidity alarm device for an oil-immersed power transformer, characterized in that: include: A protection box and a support mesh plate fixedly installed in the protection box, wherein a transformer body is placed on the support mesh plate; A mounting plate, the mounting plate being mounted on the transformer body, the mounting plate being detachably connected to the oil storage tank of the transformer body; A humidity sensor, wherein the humidity sensor is fixedly mounted on the mounting plate; An alarm, the alarm being arranged on the top of the protection box; A dustproof mechanism is arranged in the protection box for dustproof treatment of the protection box.

2. The humidity alarm device for oil-immersed power transformer according to claim 1 is characterized in that: A mounting tube is fixedly mounted on the top of the protection box, an electric telescopic rod is fixedly mounted in the mounting tube, a connecting plate is fixedly mounted on the output rod of the electric telescopic rod, and the connecting plate is fixedly connected to the alarm.

3. The humidity alarm device for oil-immersed power transformer according to claim 2 is characterized in that: An annular mounting frame is fixedly mounted on the connecting plate and the protective box, an annular waterproof plate is slidably mounted on the two annular mounting frames, positioning rods are slidably mounted on the two annular mounting frames, and multiple positioning rods are slidably connected to the annular waterproof plate. Velcro is installed on the two annular mounting frames and multiple positioning rods, and multiple Velcros are bonded to each other.

4. The humidity alarm device for oil-immersed power transformer according to claim 1 is characterized in that: The dustproof mechanism includes a heat dissipation port, two L-shaped plates, a dustproof net and a limiting mechanism. The heat dissipation port is opened on one side of the protective box, the two L-shaped plates are fixedly installed on one side of the protective box, and the dustproof net is slidably installed on the two L-shaped plates.

5. The humidity alarm device for oil-immersed power transformer according to claim 4 is characterized in that: The limiting mechanism includes a limiting rod and a compression spring. The limiting rod is slidably mounted on the L-shaped plate. The limiting rod is slidably connected to the dustproof net. A blocking piece is fixedly sleeved on the limiting rod. The compression spring is sleeved on the limiting rod. Both ends of the compression spring are fixedly connected to the L-shaped plate and the blocking piece respectively.

6. The humidity alarm device for oil-immersed power transformer according to claim 1 is characterized in that: The protective box consists of a lower shell and two half shells, the two half shells are slidably connected to the lower shell, and sealing rings are installed on the two half shells. The two sealing rings are in contact with each other. A fixing bolt is installed on any half shell, and the fixing bolt is threadedly connected to the other half shell.

7. The humidity alarm device for oil-immersed power transformer according to claim 6 is characterized in that: A slide plate is fixedly installed on one side of the lower shell, and two slide grooves are arranged on the top of the slide plate. A slide rod is fixedly installed on one side of the two half shells, and the two slide rods are slidably connected with the two slide grooves respectively.

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