A new type of transformer breather device without the need of backfilling gas protection

Abstract

The application relates to a novel transformer breather device without heavy gas protection, which comprises a tank body made of PC plastic, dry agents are placed in the tank body to keep the oil gas dry, the breather is connected with a transformer oil tank through a connecting flange and is fixed on the top of the tank body through screw threads, the sealing is ensured, the breather is internally provided with components such as a gas valve body, a gas hole telescopic cover, a reset spring, a dry agent isolation net, a breather port, an oil cup, a breather hole and a gas permeation hole, the components jointly act to realize the exchange of oil gas and external air and keep the oil gas system dry, the breather is designed to be disposable, the cost is reduced and the maintenance is simplified. The valve on the breather pipeline is provided with a relay, when the valve is closed, a first contact point of the relay is disconnected, when the valve is opened, the first contact point of the relay is closed; the first contact point is connected in series in a heavy gas protection circuit, and the breather device can be safely replaced without withdrawing a heavy gas tripping pressure plate.

Description

Technical Field

[0001] The present application relates to the technical field of transformer breathers, and in particular to a novel transformer breather device that does not require de-weighting gas protection. Background Art

[0002] Transformers are crucial equipment in power systems, and transformer breathers, as crucial accessories, play a vital role in their proper operation. Currently, the overall cost of transformer breathers is very high, costing over a thousand yuan per unit. Due to the high cost, it's common practice to maintain them rather than discard them after a single use. The transformer breather's pores are poorly designed, allowing rainwater to enter the interior of the breather during rainy days. This intrusion can cause the desiccant inside the breather to absorb the oil-water mixture, causing it to become viscous. When the desiccant loses its effectiveness, it needs to be cleaned and replaced. However, due to the viscous nature of the desiccant, cleaning is difficult and requires considerable effort.

[0003] In addition, after the transformer silicone fails, the operation and maintenance personnel need to replace it. However, during the replacement process, the heavy gas trip pressure plate needs to be withdrawn to avoid tripping caused by the heavy gas protection action during the replacement process. However, withdrawing the heavy gas trip pressure plate requires human operation, and missed withdrawal will inevitably occur, resulting in the risk of the main transformer tripping. Missed withdrawal means that during the operation process, due to human negligence or other reasons, the steps of withdrawing the heavy gas trip pressure plate are not correctly executed, resulting in the pressure plate still in working condition. Summary of the Invention

[0004] The purpose of this application is to propose a new type of transformer breather device that does not require de-returning of heavy gas protection, so as to improve the use efficiency and cost-effectiveness of the transformer breather and avoid missing de-returning when replacing the transformer breather.

[0005] To achieve the above objectives, the present invention provides a novel transformer respirator device that does not require back-pressure gas protection, including:

[0006] It comprises a tank body (6), a portion connected to the oil tank, and a breathing port portion; the tank body (6) and the breathing port portion are made of PC plastic;

[0007] A desiccant is placed inside the tank body (6) and a desiccant isolation net (8) is provided. The desiccant isolation net (8) is provided in the tank body (6) at a position close to the respirator port (10);

[0008] The part connected to the fuel tank includes:

[0009] A connecting flange (1) is used to connect the transformer oil tank and is fixed to the top of the tank body (6) through a threaded connection to ensure a sealed connection between the oil tank and the respirator;

[0010] The gas valve body (2) is fixed at one end with the connecting flange (1) and at the other end passes through the mounting hole (18) of the tank body (6), so that a part of the gas valve body (2) is located outside the tank body (6) and the other part is located inside the tank body (6); The gas valve body (2) is provided with a gas hole (17) to allow gas to flow between the oil tank and the inside of the tank body (6);

[0011] The gas hole telescopic cover (3) is slidingly connected to the outer edge of the gas valve body (2) and is used to cover the gas hole (17);

[0012] The reset spring (4) is connected at one end to the gas hole telescopic cover (3) and at the other end to the gas valve body (2) to provide a spring force to ensure that the gas hole telescopic cover (3) is always pressed tightly on the gas hole (17);

[0013] The breathing port portion includes:

[0014] The respirator port (10) is in communication with the inner cavity of the tank body (6) through the desiccant isolation net (8);

[0015] The oil cup (12) is arranged at the bottom of the respirator port (10) and is used to store oil; The oil forms a liquid level in the oil cup (12) and is used to isolate the breathing hole (13);

[0016] The breathing hole (13) is arranged on the respirator port (10) and is located above the oil cup (12) and is isolated from the outside air by the oil in the oil cup (12); When the transformer oil tank generates a breathing phenomenon, the oil level in the oil cup (12) changes, allowing air to enter the tank body (6) through the breathing hole (13)

[0017] The inside;

[0018] The gas hole (17) is arranged on the gas valve body (2) and connects the oil tank and the inside of the tank body (6); When the oil tank generates positive pressure or negative pressure, gas flows through the gas hole (17) to achieve pressure balance;

[0019] The breathing conduit is provided with a valve for closing or opening the breathing conduit; The valve is provided with a relay, when the valve is closed, the first interface point of the relay is disconnected, and when the valve is opened, the first interface point of the relay is closed; The first interface point is connected in series in the heavy gas protection circuit.

[0020] Further, it further includes:

[0021] The limiting clamp spring (5) is arranged at the end of the air valve body (2) and is used to limit the range of the air hole telescopic cover (3) sliding out of the air valve body (2), ensuring that the air hole telescopic cover (3) will not fall off accidentally during normal operation.

[0022] Furthermore, it also includes:

[0023] The respirator port sealing gasket (9) is arranged between the respirator port (10) and the tank body (6) and is used to seal the connection between the respirator port (10) and the tank body (6) to prevent oil and gas leakage.

[0024] Furthermore, the respirator port comprises an inner cylinder (15) and an outer cylinder (16), the inner cylinder (15) being located inside the outer cylinder (16), the two being fixedly connected with a certain gap therebetween, a breathing hole (13) being provided on the outer cylinder (16), the outer cylinder (16) being fixedly connected to the oil cup (12), the oil in the oil cup (12) being able to enter the gap, and when the air pressure changes, the liquid level of the oil in the oil cup (12) between the inner cylinder (15) and the outer cylinder (16) changes, exposing or covering the breathing hole (13), thereby allowing air to pass through and enter the tank body (6).

[0025] Furthermore, it also includes:

[0026] A rain curtain (14) is arranged on the outer cylinder (16) to cover the breathing hole (13) and is used to prevent rainwater from entering the breathing hole (13) when rainwater flows down along the surface of the transformer respirator.

[0027] Furthermore, a pressure relief valve is provided on the tank body (6).

[0028] Furthermore, a handle is included, which is used to rotate the tank body (6) to disassemble the respirator. The handle is interlocked with the valve through an interlocking mechanism. When the valve is closed, the handle is unlocked, and when the valve is opened, the handle is locked.

[0029] Furthermore, when the valve is closed, the interlocking mechanism is driven to move to an unlocking position, and the handle is unlocked; when the valve is opened, the interlocking mechanism is driven to move to a locking position, and the handle is locked.

[0030] Furthermore, when the valve is closed, the second docking point of the relay is opened, and when the valve is opened, the second docking point of the relay is closed; the interlocking mechanism includes an electromagnetic lock, and the second docking point is connected in series with the electromagnetic lock. When the second docking point is closed, the electromagnetic lock is energized and locks the handle; when the second docking point is disconnected, the electromagnetic lock loses power and unlocks the handle.

[0031] A transformer respirator according to an embodiment of the present application has the following beneficial effects:

[0032] The parts of the respirator other than the oil tank connection part are made of PC plastic, with a low overall cost. It is designed to be disposable, which simplifies the use and maintenance process. The part of the respirator connected to the oil tank can be disassembled very conveniently, and the oil tank can be sealed instantly during disassembly. Therefore, the use efficiency and cost-effectiveness of the transformer respirator can be improved. The valve on the breathing pipe is provided with a relay. When the valve is closed, the first docking point of the relay is disconnected, and when the valve is opened, the first docking point of the relay is closed; the first docking point is connected in series in the heavy gas protection circuit, and the respirator device can be safely replaced without exiting the heavy gas tripping pressure plate, which reduces the operating steps and improves the safety and efficiency of the maintenance process; at the same time, it avoids the risk of transformer tripping due to human operational errors.

[0033] More features and advantages of the embodiments of the present application are reflected below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 This is a schematic structural diagram of a transformer respirator in an embodiment of the present application.

[0036] Figure 2 This is an exploded view of a transformer breather in an embodiment of the present application.

[0037] Figure 3 This is a schematic diagram of the first connection point of the relay in series connected to the heavy gas protection circuit in an embodiment of the present application.

[0038] Figure 4 This is a schematic diagram of the second connection point of the relay in the embodiment of the present application being connected in series in the electromagnetic lock circuit.

[0039] Markings in the figure:

[0040] 1-Connecting flange; 2-Valve body; 3-Air hole telescopic cover; 4-Reset spring; 5-Limiting retaining spring; 6-Tank body; 8-Desiccant isolation net; 9-Breather port sealing gasket; 10-Breather port; 11-Oil cup sealing gasket; 12-Oil cup; 13-Breathing hole; 14-Rain curtain; 15-Inner tube; 16-Outer tube; 17-Ventilation hole; 18-Mounting hole. DETAILED DESCRIPTION

[0041] See Figures 1-2 The embodiment of the present application provides a novel transformer respirator device that does not require back-weight gas protection, including a tank body 6, a portion connected to the oil tank, and a breathing port portion; the tank body 6 and the breathing port portion are made of PC plastic;

[0042] A desiccant is placed inside the tank body 6 and a desiccant isolation net 8 is provided. The desiccant isolation net 8 is provided inside the tank body 6 near the respirator port 10.

[0043] The part connected to the fuel tank includes:

[0044] Connecting flange 1, which is used to connect the transformer oil tank and is fixed to the top of the tank body 6 through a threaded connection to ensure a sealed connection between the oil tank and the respirator;

[0045] The gas valve body 2 has one end fixed to the connecting flange 1 and the other end passing through the mounting hole 18 of the tank body 6, so that a portion of the gas valve body 2 is located outside the tank body 6 and the other portion is located inside the tank body 6; the gas valve body 2 has a vent hole 17 to allow gas to flow between the fuel tank and the interior of the tank body 6;

[0046] The air hole telescopic cover 3 is slidably connected to the outer edge of the valve body 2 and is used to cover the air hole 17;

[0047] A return spring 4, one end of which is connected to the vent telescopic cover 3 and the other end is connected to the valve body 2, providing elastic force to ensure that the vent telescopic cover 3 is always pressed tightly against the vent 17;

[0048] The breathing port portion comprises:

[0049] The respirator port 10 is connected to the inner cavity of the tank body 6 through the desiccant isolation net 8;

[0050] The oil cup 12 is provided at the bottom of the breather port 10 and is used to store oil; the oil forms a liquid level in the oil cup 12 to isolate the breathing hole 13;

[0051] The breathing hole 13 is provided on the breather port 10 and is located above the oil cup 12. The oil in the oil cup 12 is isolated from the outside air. When the transformer tank breathes, the oil level in the oil cup 12 changes, allowing air to enter the tank body 6 through the breathing hole 13.

[0052] The air vent 17 is located on the air valve body 2 and connects the oil tank and the inside of the tank body 6; when the oil tank generates positive pressure or negative pressure, the gas flows through the air vent 17 to achieve air pressure balance.

[0053] Furthermore, it also includes:

[0054] The limiting retaining spring 5 is arranged at the end of the valve body 2 and is used to limit the range of the air hole telescopic cover 3 sliding out of the valve body 2, ensuring that the air hole telescopic cover 3 will not fall off accidentally during normal operation.

[0055] Furthermore, the breathing port portion further includes:

[0056] The breather port sealing gasket 9 is arranged between the breather port 10 and the tank body 6 to achieve sealing of the connection between the breather port 10 and the tank body 6 to prevent oil and gas leakage.

[0057] Furthermore, the respirator mouth includes an inner cylinder 15 and an outer cylinder 16, the inner cylinder 15 is located inside the outer cylinder 16, the two are fixedly connected and there is a certain gap between the two, a breathing hole 13 is opened on the outer cylinder 16, the outer cylinder 16 is fixedly connected to the oil cup 12, and the oil in the oil cup 12 can enter the gap. When the air pressure changes, the liquid level change of the oil in the oil cup 12 between the inner cylinder 15 and the outer cylinder 16 will expose or cover the breathing hole 13, thereby allowing air to pass through and enter the tank body 6.

[0058] Furthermore, the breathing port portion further includes:

[0059] The rain curtain 14 is provided on the outer cylinder 16 to cover the breathing hole 13 , and is used to prevent rainwater from entering the breathing hole 13 when rainwater flows down along the surface of the transformer breather.

[0060] Furthermore, the tank body 6 is also provided with a pressure relief valve, which is a one-way valve.

[0061] Specifically, the working principle of the transformer respirator of this embodiment is as follows:

[0062] The connecting flange 1 is threadedly connected to the tank body 6. To disassemble, simply rotate the tank body 6 to disengage the connecting flange 1 from the tank body 6. This disengages the valve body 2 from the tank body 6. At the moment the mounting hole 18 disengages from the vent cover 3, the cover 3 moves downward under the action of elastic force until it is restrained by the retaining spring. At this point, the cover 3 covers the vent 17. The inner wall of the cover 3, provided with a sealing ring, seals the vent 17. Therefore, during disassembly, the fuel tank connection instantly seals the fuel tank, preventing undried air from entering the tank. The pressure relief valve of the tank body 6 is directly connected to the interior of the tank body 6. If the desiccant is abnormally clogged, or the tank experiences positive pressure breathing, gas can be discharged through the pressure relief valve of the tank body 6.

[0063] The respirator port 10 is connected to the interior of the tank body 6 through the respirator port sealing gasket 9 and the desiccant isolation net 8. A breathing hole 13 is opened on the respirator, and an arc-shaped rain curtain 14 is provided on the periphery of the breathing hole 13 to block rainwater; and the oil cup 12 is arranged at the bottom of the respirator port 10. The respirator port 10 has an inner tube 15 and an outer tube 16, wherein the outer tube 16 is connected to the oil cup 12, and the inner tube 15 is used to isolate the air; during use, an appropriate amount of oil will be stored in the oil cup 12, and the oil will submerge the bottom of the inner tube 15 and the outer tube 16, so that the oil can isolate the breathing hole 13. When the respirator is in normal use, the oil tank of the transformer will breathe. When the oil tank generates negative pressure, the negative pressure is partially connected to the breathing port through the tank body 6. At this time, the negative pressure will suck up the oil in the oil cup 12 through the inner tube 15, and the liquid level of the inner tube 15 will rise, and the liquid level of the outer tube 16 will drop until the oil no longer isolates the breathing hole 13. At this time, the outside air enters the respirator port 10 through the breathing hole 13, and after being dried by the desiccant inside the tank body 6, it enters the oil pipe to achieve air pressure balance; when the oil pipe generates positive pressure, the reverse is the same to achieve air pressure balance. The setting of the rain curtain 14 can effectively prevent water from entering and contacting the desiccant inside the tank body 6, and can effectively extend the effective time of the desiccant. In addition, the water-blocking effect can be further improved by setting a circle of water-blocking and breathable material on the outer edge of the breathing hole 13.

[0064] Furthermore, the oil tank connection part is connected to the transformer oil tank through a breathing pipe, and a valve is provided on the breathing pipe for closing or conducting the breathing pipe; a relay is provided on the valve, and when the valve is closed, the first docking point of the relay is disconnected, and when the valve is opened, the first docking point of the relay is closed; Figure 3 As shown, the first docking point is connected in series in the heavy gas protection circuit.

[0065] Specifically, the steps for replacing the respirator of the transformer breathing device of this embodiment are as follows:

[0066] S1 closes the valve:

[0067] Close the valve on the breathing tube manually or through the control system; closing the valve will disconnect the first connection point of the relay, thereby cutting off the power supply to the heavy gas protection circuit;

[0068] S2 confirms that the heavy gas protection circuit is disconnected:

[0069] Confirm through monitoring or testing that the heavy gas protection circuit has been disconnected, so that when the breather is replaced, even if the heavy gas protection action occurs, it will not cause the transformer to trip;

[0070] S3 disassembly of the respirator:

[0071] After confirming that the heavy gas protection circuit has been disconnected, the old breather device can be safely removed; at this time, since the valve is closed, the transformer tank is isolated from the outside world, preventing oil and gas leakage and outside air from entering;

[0072] S4 Install new respirator:

[0073] Install the new breather assembly by following these steps in reverse order; ensure the new breather is installed correctly and seals well;

[0074] S5 opens the valve:

[0075] After the new respirator is installed, open the valve manually or through the control system; the opening of the valve will close the first connection point of the relay and re-energize the heavy gas protection circuit;

[0076] S6 restores heavy gas protection:

[0077] After confirming that the valve is open and the heavy gas protection circuit has been restored, the breather device replacement process is complete and the transformer can resume normal operation;

[0078] Through the design of this embodiment, the breather device can be safely replaced without exiting the heavy gas trip pressure plate, reducing the operating steps and improving the safety and efficiency of the maintenance process; at the same time, avoiding the risk of transformer tripping due to human operational errors.

[0079] Furthermore, a handle is included, which is used to rotate the tank body 6 to disassemble the respirator. The handle is interlocked with the valve through an interlocking mechanism. When the valve is closed, the handle is unlocked, and when the valve is opened, the handle is locked.

[0080] Specifically, this embodiment provides a mechanical interlock mechanism that physically connects the open and closed state of the valve with the locked state of the handle. The working principle of the mechanical interlock mechanism is as follows:

[0081] Operation when the valve is closed: When the valve is closed, a component on the valve, such as a gear, rod, cam, etc., drives the interlocking mechanism through a mechanical connection such as a gear set, connecting rod, drive belt, etc.; the interlocking mechanism is driven to the unlocked position, which releases the locking components connected to the handle, such as pins, latches, springs, etc.; once the locking components are released, the operator can freely rotate or pull the handle to remove the respirator;

[0082] Operation when the valve is open: When the valve is open, the movement of the valve will cause the interlock mechanism to be driven to the locked position; in the locked position, the interlock mechanism will lock the handle to prevent it from being accidentally operated when the valve is open; at this time, even if the operator tries to rotate or pull the handle, the respirator will not be able to be removed due to the action of the locking mechanism;

[0083] This mechanical interlock design ensures that the breather can only be safely removed when the valve is closed, thus avoiding oil and gas leakage or other safety issues caused by improper operation during maintenance. Through physical connection, this interlock mechanism does not rely on electrical signals, so it can still provide effective protection in some environments where the electrical system may be unreliable.

[0084] Furthermore, when the valve is closed, the interlocking mechanism is driven to move to an unlocking position, and the handle is unlocked; when the valve is opened, the interlocking mechanism is driven to move to a locking position, and the handle is locked.

[0085] Furthermore, when the valve is closed, the second docking point of the relay is opened, and when the valve is opened, the second docking point of the relay is closed; the interlocking mechanism includes an electromagnetic lock, such as Figure 4 As shown, the second docking point is connected in series with the electromagnetic lock. When the second docking point is closed, the electromagnetic lock is energized and locks the handle. When the second docking point is disconnected, the electromagnetic lock loses power and unlocks the handle.

[0086] Specifically, this embodiment provides an electrical interlock mechanism that uses the second contact point of the relay to control the power on and off of the electromagnetic lock, thereby locking and unlocking the handle. The working principle of the electrical interlock mechanism is as follows:

[0087] Operation when the valve is closed: When the valve is closed, the second connection point of the relay opens, cutting off the power supply to the electromagnetic lock. After the electromagnetic lock loses power, the magnetic component inside it loses its magnetic force, releasing the locking mechanism and unlocking the handle. At this time, the operator can freely rotate or pull the handle to remove and install the respirator.

[0088] Operation when the valve is open: When the valve is open, the second contact of the relay is closed, turning on the power of the electromagnetic lock. After the electromagnetic lock is energized, the magnetic component inside it generates magnetic force, attracting the locking mechanism, causing the handle to lock. When the valve is open, the electromagnetic lock locks the handle and cannot be operated, thus ensuring the safety of the respirator during maintenance.

[0089] This electrical interlock design ensures that the respirator can only be safely removed when the valve is closed and the electromagnetic lock loses power. It relies on electrical signals to control the locking state of the handle, so it is necessary to ensure the reliability and correct wiring of the relay and electromagnetic lock. Through electrical interlocking, safe control of respirator maintenance operations can be achieved, reducing human errors and improving the automation level of the system.

[0090] While various embodiments of the present application have been described above, the above descriptions are illustrative, non-exhaustive, and not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A transformer respirator device that does not require back-weight gas protection, characterized in that: It comprises a tank body (6), a portion connected to the fuel tank, and a breathing port portion; the tank body (6) and the breathing port portion are made of PC plastic; A desiccant is placed inside the tank body (6) and a desiccant isolation net (8) is provided. The desiccant isolation net (8) is provided in the tank body (6) at a position close to the respirator port (10); The part connected to the fuel tank includes: A connecting flange (1) is used to connect the transformer oil tank and is fixed to the top of the tank body (6) through a threaded connection to ensure a sealed connection between the oil tank and the breather; An air valve body (2), one end of the air valve body (2) is fixed to the connecting flange (1), and the other end passes through the mounting hole (18) of the tank body (6), so that a portion of the air valve body (2) is located outside the tank body (6) and the other portion is located inside the tank body (6); a vent hole (17) is provided on the air valve body (2) to allow gas to flow between the oil tank and the inside of the tank body (6); An air hole telescopic cover (3), the air hole telescopic cover (3) is slidably connected to the outer edge of the air valve body (2) and is used to cover the air hole (17); A return spring (4), one end of which is connected to the air hole telescopic cover (3) and the other end of which is connected to the air valve body (2), providing elastic force to ensure that the air hole telescopic cover (3) is always pressed tightly against the air vent (17); The breathing port portion comprises: The respirator port (10) is connected to the inner cavity of the tank body (6) through the desiccant isolation net (8); An oil cup (12) is provided at the bottom of the breather port (10) and is used to store oil; the oil forms a liquid level in the oil cup (12) and is used to isolate the breathing hole (13); A breathing hole (13) is provided on the breather port (10) and is located above the oil cup (12), and is isolated from the outside air by the oil in the oil cup (12); when the transformer oil tank produces a breathing phenomenon, the oil level in the oil cup (12) changes, allowing air to enter the interior of the tank body (6) through the breathing hole (13); The vent hole (17) is located on the air valve body (2) and connects the oil tank and the inside of the tank body (6); when the oil tank generates positive pressure or negative pressure, gas flows through the vent hole (17) to achieve air pressure balance; The part connected to the oil tank is connected to the transformer oil tank through a breathing pipe. A valve is provided on the breathing pipe for closing or conducting the breathing pipe. A relay is provided on the valve. When the valve is closed, the first docking point of the relay is disconnected, and when the valve is opened, the first docking point of the relay is closed. The first docking point is connected in series to the heavy gas protection circuit.

2. The transformer breather device according to claim 1, characterized in that The part connected to the fuel tank also includes: The limiting retaining spring (5) is arranged at the end of the air valve body (2) and is used to limit the range of the air hole telescopic cover (3) sliding out of the air valve body (2), ensuring that the air hole telescopic cover (3) will not fall off accidentally during normal operation.

3. The transformer breather device according to claim 1, characterized in that The breathing port portion further comprises: The respirator port sealing gasket (9) is arranged between the respirator port (10) and the tank body (6) and is used to seal the connection between the respirator port (10) and the tank body (6) to prevent oil and gas leakage.

4. The transformer breather device according to claim 1, characterized in that The respirator port comprises an inner cylinder (15) and an outer cylinder (16), wherein the inner cylinder (15) is located inside the outer cylinder (16), the two are fixedly connected and a certain gap is formed between the two, a breathing hole (13) is provided on the outer cylinder (16), the outer cylinder (16) is fixedly connected to the oil cup (12), and the oil in the oil cup (12) can enter the gap, and when the air pressure changes, the liquid level of the oil in the oil cup (12) between the inner cylinder (15) and the outer cylinder (16) changes, exposing or covering the breathing hole (13), thereby allowing air to pass through and enter the tank body (6).

5. The transformer breather device according to claim 4, characterized in that: Also includes: A rain curtain (14) is provided on the outer cylinder (16) to cover the breathing hole (13) and is used to prevent rainwater from entering the breathing hole (13) when rainwater flows down along the surface of the transformer breather.

6. The transformer breather device according to claim 1, characterized in that The tank body (6) is also provided with a pressure relief valve.

7. The transformer breather device according to claim 1, characterized in that It also includes a handle, which is used to rotate the tank body (6) to disassemble the respirator. The handle is interlocked with the valve through an interlocking mechanism. When the valve is closed, the handle is unlocked, and when the valve is opened, the handle is locked.

8. The transformer breather device according to claim 7, characterized in that: When the valve is closed, the interlocking mechanism is driven to move to the unlocking position, and the handle is unlocked. When the valve is opened, the interlocking mechanism is driven to move to the locking position, and the handle is locked.

9. The transformer breather device according to claim 8, characterized in that When the valve is closed, the second docking point of the relay is opened, and when the valve is opened, the second docking point of the relay is closed; the interlocking mechanism includes an electromagnetic lock, and the second docking point is connected in series with the electromagnetic lock. When the second docking point is closed, the electromagnetic lock is energized and locks the handle; when the second docking point is disconnected, the electromagnetic lock loses power and unlocks the handle.

Images