Glue injection explosion-proof transformer

Abstract

The application discloses a glue injection explosion-proof transformer and relates to the field of transformers.The transformer body is internally fixedly installed with a fixing frame, and a plurality of exhaust heads are fixedly installed at the top end of the fixing frame.The end portions of the plurality of exhaust heads are all communicated with first air guide pipes.The two ends of the second air guide pipe are all communicated with second air guide pipes.A plurality of air outlet pipes are communicated with the second air guide pipes, and the plurality of air outlet pipes penetrate the bottom end of the transformer body.The application utilizes the plurality of exhaust heads with openings facing the high-pressure gas easy accumulation area, can efficiently collect the gas, and then guides the gas to the air outlet pipes for discharge through the exhaust passage composed of the first air guide pipe, the first air guide pipe and the like.When the communication pipe is opened, the air passage groove and the air flow passage are completely coincident, the smoothness of the gas flow is ensured, the pressure relief efficiency is greatly improved, the internal pressure can be reduced in a short time, and the chain hazards caused by the continuous increase of the pressure are avoided.

Description

Technical Field

[0001] This application relates to the field of transformers, and more particularly to a glue-filled explosion-proof transformer. Background Technology

[0002] Currently, explosion-proof transformers with glue injection technology are used to seal the internal core components, which can effectively isolate the intrusion of external dust, moisture and other impurities. At the same time, it can prevent the sparks and arcs generated by internal faults from spreading outward to a certain extent. It has good explosion-proof performance and environmental adaptability, and is widely used in industrial places with flammable and explosive risks such as chemical, coal mine and metallurgy.

[0003] However, existing rubber-filled explosion-proof transformers still pose certain safety hazards in actual use. Due to the strong sealing effect of the rubber-filled seal, when the transformer experiences a sudden temperature rise due to overload, short circuit, or other faults, the internal insulation material decomposes, air expands, and a large amount of high-pressure gas is generated. Currently, most rubber-filled explosion-proof transformers lack dedicated pressure relief mechanisms, making it impossible to safely release this high-pressure gas in a timely manner. As the high-pressure gas accumulates, the internal pressure of the transformer continues to rise. Once it exceeds the withstand limit of the rubber-filled seal or the casing, it can easily lead to casing rupture and rubber layer collapse. This not only damages the transformer itself but also risks igniting surrounding flammable and explosive media due to the high-temperature substances or sparks released instantaneously by the high-pressure gas, causing serious safety accidents. Utility Model Content

[0004] To address the problem of existing explosion-proof transformers being unable to automatically release pressure, this application provides a glue-filled explosion-proof transformer.

[0005] The explosion-proof transformer provided in this application adopts the following technical solution: An explosion-proof transformer includes a transformer body, a fixing frame is fixedly installed inside the transformer body, and multiple sets of exhaust heads are fixedly installed on the top of the fixing frame. The ends of the multiple sets of exhaust heads are all connected to a first air guide pipe, and a first air supply pipe is connected to the first air guide pipe. A connecting pipe is connected to the first air supply pipe, and a second air supply pipe is connected to the connecting pipe. Both ends of the second air supply pipe are connected to second air guide pipes, and multiple sets of air outlet pipes are connected to the second air guide pipes. The multiple sets of air outlet pipes penetrate the bottom end of the transformer body. A control component is provided on the fixing frame for controlling the opening and closing of the connecting pipes.

[0006] By adopting the above technical solution, when high-pressure gas is generated inside the transformer body due to a fault, the high-pressure gas can be discharged to the outside through the exhaust head, the first gas guide pipe, the first gas delivery pipe, the connecting pipe, the second gas delivery pipe, the second gas guide pipe, and the outlet pipe in sequence, thus achieving directional discharge of the internal high-pressure gas. At the same time, the control component can control the opening and closing of the connecting pipe according to the actual situation, preventing external impurities from entering the transformer body through the exhaust channel during normal operation, and ensuring the normal working environment of the transformer.

[0007] Preferably, the control component includes two sets of fixed columns fixedly mounted on a fixed frame, a servo motor fixedly mounted between the two sets of fixed columns, a connecting rod fixedly connected to the output shaft of the servo motor, the connecting rod passing through the connecting pipe, a ball core fixedly connected to the end of the connecting rod, the ball core being located inside the connecting pipe, and a ventilation groove being formed on the outer surface of the ball core.

[0008] By adopting the above technical solution, the servo motor can drive the connecting rod to rotate, which in turn drives the ball core to rotate inside the connecting pipe. When exhaust is required, the servo motor is controlled to align the vent groove with the airflow channel of the connecting pipe, the connecting pipe is opened, and high-pressure gas can flow. When exhaust is not required, the servo motor is controlled to misalign the vent groove with the airflow channel of the connecting pipe, the ball core blocks the connecting pipe, and the closing effect is achieved.

[0009] Preferably, a pressure sensor is provided on the top outer surface of the fixing frame, and the pressure sensor is electrically connected to the motor through a wire.

[0010] By adopting the above technical solution, the pressure sensor can monitor the internal pressure value of the transformer body in real time. When the internal pressure rises to the preset threshold, the pressure sensor will send an electrical signal to the motor, triggering the motor to start and control the opening of the connecting pipe to automatically perform the pressure relief operation.

[0011] Preferably, each of the multiple sets of air outlet pipes is connected to a filter screen via a thread.

[0012] By adopting the above technical solution, the filter screen prevents impurities from entering the air outlet pipe.

[0013] Preferably, a connecting block is fixedly installed on one side of the filter screen, and a plum blossom groove is provided on the connecting block, the size of which is adapted to a standard plum blossom wrench.

[0014] By adopting the above technical solution, when disassembling and assembling the filter screen, a standard box wrench can be inserted into the box groove, and the filter screen can be rotated by rotating the connecting block, so as to easily achieve threaded connection or disassembly of the filter screen and the air outlet pipe.

[0015] Preferably, the bottom end of the transformer body is U-shaped.

[0016] By adopting the above technical solution, the U-shaped bottom structure can guide the high-voltage gas inside the transformer body, making the gas more likely to gather at the location of the exhaust pipe and improving exhaust efficiency.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. This utility model utilizes multiple sets of exhaust head openings facing areas where high-pressure gas easily accumulates, which can efficiently collect gas. Then, through the exhaust channel composed of the first air guide pipe and the first air delivery pipe, the gas is quickly guided to the exhaust pipe for discharge. When the connecting pipe is open, the ventilation groove and the airflow channel are completely aligned, ensuring smooth gas flow and greatly improving the pressure relief efficiency. It can reduce the internal pressure in a short time and avoid the chain of hazards caused by the continuous increase in pressure.

[0019] 2. This invention uses a pressure sensor to send an electrical signal to a servo motor, which drives the ball core to rotate, opening the connecting pipe and allowing high-pressure gas to be discharged along a preset exhaust channel. The entire process requires no manual intervention, responds quickly, and can release pressure in time before the pressure exceeds the equipment's tolerance limit, avoiding damage to the shell or adhesive layer caused by excessive internal pressure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first overall structure of the glue-filled explosion-proof transformer according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the second integral structure of the glue-filled explosion-proof transformer according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram illustrating the cross-sectional structure of an explosion-proof transformer, as shown in the embodiments of this application.

[0023] Figure 4 This is a schematic diagram illustrating the structure of the explosion-proof transformer mounting frame, which is the main embodiment of this application.

[0024] Figure 5 This is a schematic diagram illustrating the cross-sectional structure of the connecting pipe of the explosion-proof transformer, which is the main embodiment of this application.

[0025] Figure 6 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 7 for Figure 4 Enlarged diagram of point B in the middle.

[0027] Reference numerals in the attached drawings: 1. Transformer body; 2. Fixing frame; 3. Exhaust head; 31. First air guide pipe; 32. First air supply pipe; 33. Second air supply pipe; 34. Second air guide pipe; 35. Air outlet pipe; 4. Fixing column; 41. Servo motor; 42. Ball core; 43. Connecting rod; 44. Ventilation groove; 5. Connecting pipe; 6. Pressure sensor; 7. Filter screen; 8. Connecting block. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0029] This application discloses an explosion-proof transformer with glue injection.

[0030] Example 1

[0031] Reference Figure 2 , Figure 3 , Figure 4 and Figure 7 An explosion-proof transformer with glue injection is disclosed, comprising a transformer body 1. The transformer body 1 is characterized by a fixed frame 2 inside the transformer body 1, which is used to stably install components such as exhaust heads 3 to ensure their positional stability during transformer operation. Multiple sets of exhaust heads 3 are fixedly installed at the top of the fixed frame 2. Each set of exhaust heads 3 has a first air guide pipe 31 at its end, and a first air supply pipe 32 is connected to the first air guide pipe 31. A connecting pipe 5 is connected to the first air supply pipe 32, and a second air supply pipe 33 is connected to the connecting pipe 5. Both ends of the second air supply pipe 33 are connected to second air guide pipes 34, and multiple sets of exhaust pipes 35 are connected to the second air guide pipes 34. Multiple sets of vent pipes 35 penetrate the bottom of the transformer body 1, forming a complete exhaust system. This provides a directional flow path for the high-pressure gas inside the transformer, solving the problem of traditional transformers lacking an effective exhaust path. Each of the multiple sets of vent pipes 35 is connected to a filter screen 7 via threads. A connecting block 8 is fixedly installed on one side of the filter screen 7, and the connecting block 8 has a perforated groove. The size of the perforated groove is compatible with a standard perforated wrench, providing a convenient operating structure for the installation and removal of the filter screen 7. The bottom of the transformer body 1 is U-shaped, and the gap between the bottom of the U-shape and the mounting surface can guide the internal gas to gather in the vent pipes 35, improving exhaust efficiency.

[0032] Example 2

[0033] Reference Figure 5The fixed frame 2 is equipped with a control component for controlling the opening and closing of the connecting pipe 5. The control component includes two sets of fixed columns 4 fixedly installed on the fixed frame 2. A servo motor 41 is fixedly installed between the two sets of fixed columns 4. The servo motor 41 serves as a power source and can drive the connecting rod 43 to rotate precisely through the output shaft. The connecting rod 43 is fixedly connected to the output shaft of the servo motor 41 and passes through the connecting pipe 5. The connecting rod 43 plays a transmission role, transmitting the power of the servo motor 41 to the ball core 42. The end of the connecting rod 43 is fixedly connected to the ball core 42, which is located inside the connecting pipe 5. A venting groove 44 is opened on the outer surface of the ball core 42. By rotating the ball core 42, the venting groove 44 is aligned or offset from the channel of the connecting pipe 5, thereby opening or closing the connecting pipe 5 and controlling the opening and closing of the exhaust channel. This allows high-pressure gas to be discharged when needed and closes the channel during normal operation to prevent external impurities from entering.

[0034] Example 3

[0035] Reference Figure 5 A pressure sensor 6 is provided on the top outer surface of the fixed frame 2, and the pressure sensor 6 is electrically connected to the motor 41 through a wire. The pressure sensor 6 can monitor the air pressure change inside the transformer body 1 in real time. When the internal pressure reaches the preset danger value, it can transmit the signal to the motor 41 through the wire, trigger the motor 41 to start, and then control the opening of the connecting pipe 5 to exhaust air.

[0036] The implementation principle of the explosion-proof transformer with glue injection in this application embodiment is as follows: When the pressure inside the transformer body 1 rises abnormally due to overload, short circuit or other faults, and the pressure value reaches the preset safety threshold of the pressure sensor 6, the pressure sensor 6 will immediately send an electrical signal and transmit it to the servo motor 41. After receiving the signal, the servo motor 41 starts, and its output shaft drives the connecting rod 43 to rotate synchronously, thereby driving the ball core 42 located inside the connecting pipe 5 to rotate. As the ball core 42 rotates, the ventilation groove 44, which was originally in a misaligned state, gradually rotates to a vertical state that coincides with the airflow channel of the connecting pipe 5. At this time, the channel of the connecting pipe 5 is fully opened, providing a flow path for the high-pressure gas to be discharged.

[0037] Driven by the internal pressure of the transformer body 1, the high-pressure gas is first collected through multiple evenly distributed exhaust heads 3. The openings of the exhaust heads 3 face the areas where high-pressure gas tends to accumulate, enabling efficient gas capture. Subsequently, the gas enters the corresponding first gas guide pipe 31 from the exhaust head 3 and is collected into the first gas delivery pipe 32 through the first gas guide pipe 31. Under pressure, the gas flows from the first gas delivery pipe 32 into the opened connecting pipe 5 and enters the second gas delivery pipe 33 through the ventilation groove 44. Then, the gas is dispersed from the second gas delivery pipe 33 to the second gas guide pipes 34 at both ends and finally discharged to the outside through multiple sets of exhaust pipes 35 that penetrate the bottom of the transformer body 1.

[0038] When the internal pressure of the transformer body 1 drops to the safe range set by the pressure sensor 6, the pressure sensor 6 sends an electrical signal to the servo motor 41 again. The servo motor 41 drives the ball core 42 to rotate in the opposite direction, so that the venting groove 44 is misaligned with the airflow channel of the connecting pipe 5. The connecting pipe 5 is closed, and the entire pressure relief and exhaust process is completed.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A glue-filled explosion-proof transformer, comprising a transformer body (1), characterized in that: The transformer body (1) is fixedly installed with a fixed frame (2), and multiple sets of exhaust heads (3) are fixedly installed at the top of the fixed frame (2). The ends of the multiple sets of exhaust heads (3) are all connected to a first air guide pipe (31), and a first air supply pipe (32) is connected to the first air guide pipe (31). A connecting pipe (5) is connected to the first air supply pipe (32), and a second air supply pipe (33) is connected to the connecting pipe (5). Both ends of the second air supply pipe (33) are connected to a second air guide pipe (34), and multiple sets of air outlet pipes (35) are connected to the second air guide pipe (34). The multiple sets of air outlet pipes (35) penetrate the bottom of the transformer body (1). The fixing frame (2) is equipped with a control component for controlling the opening and closing of the connecting pipe (5).

2. The explosion-proof transformer with glue injection according to claim 1, characterized in that: The control component includes two sets of fixed columns (4) fixedly installed on the fixed frame (2). A servo motor (41) is fixedly installed between the two sets of fixed columns (4). A connecting rod (43) is fixedly connected to the output shaft of the servo motor (41), and the connecting rod (43) passes through the connecting pipe (5). A ball core (42) is fixedly connected to the end of the connecting rod (43). The ball core (42) is located inside the connecting pipe (5), and a ventilation groove (44) is opened on the outer surface of the ball core (42).

3. The explosion-proof transformer with glue injection according to claim 2, characterized in that: A pressure sensor (6) is provided on the top outer surface of the fixed frame (2), and the pressure sensor (6) is electrically connected to the servo motor (41) through a wire.

4. The explosion-proof transformer with glue injection according to claim 3, characterized in that: Each of the multiple sets of air outlet pipes (35) is connected to a filter screen (7) by a thread.

5. The explosion-proof transformer with glue injection according to claim 4, characterized in that: A connecting block (8) is fixedly installed on one side of the filter screen (7), and a plum blossom groove is provided on the connecting block (8). The size of the plum blossom groove is adapted to a standard plum blossom wrench.

6. The explosion-proof transformer with glue injection according to claim 1, characterized in that: The bottom of the transformer body (1) is U-shaped.

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