Transformer respirator anti-tripping device and conduction control method

Abstract

The invention relates to the technical field of transformer protection devices, in particular to a transformer respirator anti-tripping device and a conduction control method. The device comprises a respirator, the respirator is connected with a breathing pipeline of the oil conservator through a flange I, the breathing pipeline of the oil conservator is further connected with an anti-bouncing device through a flange II, and a communicating connector connected with the breathing pipeline penetrates through the middle of a body of the anti-bouncing device. The two sides of the pressure release valve are connected with the negative pressure release channel and the positive pressure release channel through pressure release points respectively, and the pressure release valve is used for releasing positive pressure or negative pressure through the pressure release points when the respirator is blocked; the pressure release points are symmetrically arranged between the communicating connector and the negative pressure release channel and between the communicating connector and the positive pressure release channel respectively. Triple pressure protection is constructed through a respirator and double release channels, and the fault rate is reduced by 90%; pressure release is accurately controlled through a magnet and a spring, and positive pressure and negative pressure are independently treated; and the signal conduction mechanism is linked with the secondary junction box, so that remote alarm and state self-holding are realized, and misoperation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of transformer protection devices, and in particular to a transformer respirator anti-jump device and a conduction control method. Background Art

[0002] In actual production, a 220kV main transformer was blocked by moisture and ice in the silica gel of the on-load tap changer, which caused the oil chamber pressure to increase suddenly and then release suddenly, triggering the heavy gas malfunction trip. The root cause is that after the breather is blocked, the pressure difference between the inside and outside of the oil pillow cannot be balanced, and the pressure is released violently, causing oil flow impact. In order to solve the above problems, the double-breathing anti-blocking transformer breather and its control method with patent publication number CN114420416A are provided. Two breathers are designed at the breathing tube of the same oil pillow, and the first pressure detection sensor and the second pressure detection sensor are used for detection. However, the technical solution has the following problems: the double breathing tanks share the main pipeline. If the main pipeline is blocked, the double tanks will fail and real pressure protection cannot be achieved; it relies on pressure sensors and image monitoring, requires regular calibration and is easily disturbed by oil pollution, and the operation and maintenance costs increase by more than 30%; the replacement of silica gel requires closing the main valve, and a single operation affects the power supply time for more than 2 hours; the vertical pipeline structure hinders the gas-liquid two-phase flow, and the pressure relief rate cannot meet the actual needs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a transformer respirator anti-jump device and a conduction control method.

[0004] The technical solution adopted by the present invention is as follows: A transformer breather anti-jump device includes a breather, the breather is connected to a breathing pipeline of an oil pillow through a flange I, the breathing pipeline of the oil pillow is further connected to the anti-jump device through a flange II, and the anti-jump device includes the following components: The main body is set in an inverted U shape, with a connecting interface connected to the breathing tube running through the middle, and its two sides are respectively connected to the negative pressure release channel and the positive pressure release channel through the pressure release point, which is used to release positive or negative pressure through the pressure release point when the respirator is blocked; The pressure release points are symmetrically arranged between the communication interface and the negative pressure release channel and the positive pressure release channel; The negative pressure release channel is arranged in a columnar shape, with a filter screen I arranged at the bottom, filled with silica gel in the middle, and connected to the pressure release point on one side of the body through a threaded interface at the top; The positive pressure release channel is extended downward from the main body, a filter screen II is arranged at the bottom, and the top is connected to the pressure release point on the other side of the main body through an inclined channel.

[0005] This technical solution builds a redundant system through three-level pressure protection, namely, respirator, negative pressure release channel and positive pressure release channel. Compared with the traditional single respirator structure, the sudden pressure failure rate of the transformer is reduced by 90%. The existing respirator may be blocked in some cases, resulting in pressure imbalance and affecting the safety of the transformer; the anti-jump device is used to provide backup pressure release when the respirator fails to prevent the violent release of pressure from causing fluctuations in oil flow, thereby causing heavy gas action. The respirator works normally and the anti-jump device is in standby mode. When the respirator is blocked and the pressure exceeds the threshold, the positive or negative pressure release channel opens to release the pressure; the inverted U-shaped structure forms an oil seal isolation to prevent the silicone from directly contacting the oil vapor and extend the service life; the anti-jump device adds double insurance and three-level pressure protection to improve reliability; the silicone is set in layers, and the main respirator and the emergency chamber are separated to avoid cross contamination; the inverted U-shaped and inclined channel structure optimizes the oil flow rate and prevents blockage.

[0006] In addition, the transformer respirator anti-jump device proposed in the present invention may also have the following additional technical features: According to one embodiment of the present invention, the pressure release point has the following built-in mechanism: The one-way conduction mechanism includes a baffle, a fixed plate, a return spring and a magnet I. The top of the baffle is hinged to the top of the inner wall of the body, the bottom of the baffle is adsorbed on the magnet I below, and the side of the baffle is connected to the fixed plate through the return spring. The baffle is subjected to a certain pressure under the action of the magnet I and the return spring preload. When the pressure is greater than the preload, the baffle rotates along the hinge axis. The signal conduction mechanism includes a positive electrode, a negative electrode, a magnet II and a limit block. The limit block is in a wedge shape and contacts one side of the baffle after rotation. The ends of the positive electrode and the negative electrode are suspended along the hypotenuse of the wedge block. The baffle after rotation forms a closed loop with the positive electrode and the negative electrode. The positive electrode is provided with a magnet II, and the baffle after rotation is adsorbed on the magnet II. The positive electrode and the negative electrode are externally connected to a secondary junction box.

[0007] In this technical solution, the one-way conduction mechanism is used to control the one-way release of pressure to prevent backflow; the preload of magnet I and the spring sets a threshold to ensure that it will only act when the pressure exceeds a certain value; the hinged setting of the baffle allows one-way rotation, which is related to the direction of pressure, that is, positive pressure and negative pressure have different conduction directions. When the baffle is activated, a signal is triggered, the limit block is used to ensure that the baffle rotates to a specific position so that the positive and negative poles are in contact, and magnet II is used to maintain the position of the baffle after rotation to ensure that the circuit continues to conduct until it is reset. Normally, the pressure is required to exceed 1.2 atmospheres to meet the conduction conditions.

[0008] According to one embodiment of the present invention, the secondary junction box has built-in relays, network cable interfaces and power supply interfaces. The relays are used to keep the baffle opened by the airflow in a rotating state. The network cable interfaces are connected to the background machine and the motion scheduling network respectively through the station control switch.

[0009] In this technical solution, when the baffle at the pressure release point is pushed open by the airflow, the signal conduction mechanism closes and triggers the relay in the secondary junction box. The relay keeps the baffle in the open state through the self-holding circuit to prevent it from opening and closing frequently under pressure fluctuations; at the same time, the network cable interface will transmit the status signal through the network to let the background system know that pressure release has occurred, triggering an alarm or recording an event; the power interface ensures that the entire circuit has a stable power supply.

[0010] According to one embodiment of the present invention, the negative pressure release channel also includes a transparent shell and a mesh inner core, the mesh inner core is tightly fitted to the inner wall of the transparent shell, silica gel is wrapped in the mesh inner core, and the silica gel fills most of the space of the entire negative pressure release channel.

[0011] In this technical solution, the transparent shell is used to observe the internal situation, such as the state of the silica gel or whether there is any blockage. The mesh inner core fits tightly to the inner wall of the shell, plays the role of supporting the structure, and keeps the silica gel in place to prevent it from moving or deforming. The silica gel acts as a desiccant, absorbing moisture from the incoming air and preventing moisture from entering the oil pillow or other key components; the mesh inner core helps to evenly distribute the airflow to prevent the silica gel from agglomerating or being damaged by the impact of the airflow. When it is observed that the silica gel needs to be replaced or the filter I is clogged, it can be replaced by unscrewing it from the main body through the threaded interface.

[0012] According to an embodiment of the present invention, the positive pressure release channel is integrated with the body, and the inclination angle of the inclined channel of the positive pressure release channel is 45°~60°.

[0013] In this technical solution, the 45°~60° inclination angle forms a gravity-assisted acceleration of the gas-liquid two-phase flow, and the pressure relief efficiency is increased by 40%. It is cast as a whole with the body (yield strength>355MPa), eliminating the risk of flange connection leakage. That is: 45° to 60° is a balance point, which optimizes the fluid passing efficiency while reducing turbulence or resistance.

[0014] According to one embodiment of the present invention, a reinforcing plate is provided between the body and the fixing plate, and a fixing seat is provided between the body and the magnet I.

[0015] In this technical solution, the reinforcing plate is used to improve the rigidity of the overall structure to prevent deformation from causing air leakage and thus affecting pressure relief; the fixing seat is used to fix the magnet I to prevent the magnet I from being driven out of its original position due to the rotation of the baffle.

[0016] According to one embodiment of the present invention, when the baffle is in contact with the magnet I, the negative pressure release channel or the positive pressure release channel is in a closed state, and the airflow only flows from the breathing circuit to the respirator.

[0017] In this technical solution, for example, in the case of negative pressure, it is necessary to prevent the entry of external air, and in the case of positive pressure, it is necessary to release the overpressure. The baffles on both sides need to adapt to these two situations, and the suction force of the magnet I needs to be strong enough to maintain the closure, and at the same time be able to open in time when it is necessary to release.

[0018] In order to achieve the above-mentioned object, the present invention also provides a conduction control method of a transformer respirator anti-jump device.

[0019] A conduction control method for a transformer respirator anti-jump device comprises the following steps: S1. Normal breathing process: The respirator is connected to the breathing pipe of the oil pillow through flange I, allowing the gas inside the transformer to flow freely within the normal pressure range to balance the internal and external pressures; the airflow flows through the breathing pipe to the respirator, and the baffle is kept in the closed position under the preload of magnet I and the reset spring. At this time, both the negative pressure release channel and the positive pressure release channel are in a closed state; S2. If the respirator is blocked, there are two situations: S21. Negative pressure release process: When negative pressure appears inside the transformer, the negative pressure will act on the negative pressure release channel; under the action of negative pressure, the baffle is not enough to resist the external atmospheric pressure, and the airflow first enters the negative pressure release channel through the filter I, and the silica gel absorbs part of the moisture or impurities; the negative pressure continues to increase, exceeding the adsorption force between the baffle and the magnet I and the preload force of the reset spring, the baffle will open, allowing external air to enter the transformer through the negative pressure release channel to balance the pressure; S22, positive pressure release process: when positive pressure appears inside the transformer, the positive pressure will act on the positive pressure release channel; under the action of positive pressure, the baffle cannot resist the internal pressure and opens, and the airflow is transmitted to the positive pressure release channel through the connecting interface of the body, and impacts the filter screen II under the guidance of the inclined channel for filtering, allowing the gas inside the transformer to be discharged through the positive pressure release channel to balance the pressure; S3. Signal conduction and alarm process: When the baffle rotates and opens due to pressure changes, the signal conduction mechanism is triggered; the rotated baffle hits the limit block, so that the positive and negative poles form a closed loop through the baffle, thereby activating the relay located in the secondary junction box; after the relay is activated, the signal is transmitted to the background machine or motion scheduling network through the network cable interface, and an alarm or indication signal is issued, indicating that the respirator is blocked or the pressure is abnormal; at the same time, the relay keeps the baffle in the open state to ensure that the baffle remains open before the fault is handled to continuously release the pressure.

[0020] In the present technical solution, a balance is achieved through the preload force of the magnet and the spring, the pressure relief channels on both sides are kept closed, and the airflow circulates in the breathing circuit and the respirator; once the respirator is blocked, the preload force balance is broken, and then one of the two is turned on according to the air pressure state of the breathing circuit, that is, positive pressure or negative pressure state; the position of conduction is called the pressure release point, and the pressure release point has not only the one-way conduction function, but also the signal conduction function, which can be remotely controlled.

[0021] Compared with the prior art, the present invention has the following beneficial effects: (1) Triple pressure protection is constructed through a respirator and dual release channels, reducing the failure rate by 90%; pressure release is precisely controlled through magnets and springs, and positive and negative pressures are handled independently; the signal conduction mechanism is linked to the secondary junction box to achieve remote alarm and self-maintaining status to avoid false operation.

[0022] (2) The positive / negative pressure channels are equipped with filters and mesh cores to prevent silica gel from agglomerating and clogging; (3) The 45°~60° inclined channel design improves the pressure relief efficiency by 40%, and the one-piece casting eliminates the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is one of the usage state diagrams of the present invention.

[0025] Figure 3 It is the second use state diagram of the present invention.

[0026] Figure 4 It is the third use state diagram of the present invention.

[0027] Figure 5 It is a structural schematic diagram of the negative pressure release channel.

[0028] Figure 6 It is a structural schematic diagram of the positive pressure release channel.

[0029] Figure 7 It is a structural diagram of the secondary junction box.

[0030] Figure 8 It is the process schematic diagram of the secondary junction box.

[0031] In the figure: 1. oil pillow; 2. breathing circuit; 3. flange I; 4. respirator; 5. flange II; 6. anti-jump device; 61. main body; 62. negative pressure release channel; 621. filter I; 622. silica gel; 623. threaded interface; 63. pressure release point; 631. magnet I; 632. baffle; 633. limit block; 634. negative pole; 635. positive pole; 636. magnet II; 637. fixing plate; 638. reset spring; 64. positive pressure release channel; 641. filter II; 642. inclined channel. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1 like Figures 1 to 4 As shown, this embodiment provides a transformer breather anti-jump device, including a breather 4, which is connected to the breathing pipe 2 of the oil pillow 1 through a flange I3, and the breathing pipe 2 of the oil pillow 1 is also connected to the anti-jump device 6 through a flange II5. The anti-jump device 6 includes the following components: The body 61 is in an inverted U-shape, with a connecting interface connected to the breathing tube 2 penetrating the middle thereof, and two sides thereof are respectively connected to the negative pressure release channel 62 and the positive pressure release channel 64 through the pressure release point 63, so as to release the positive pressure or negative pressure through the pressure release point 63 when the respirator 4 is blocked; The pressure release points 63 are symmetrically arranged between the communication interface and the negative pressure release channel 62 and the positive pressure release channel 64; Attached Figure 5 As shown, the negative pressure release channel 62 is arranged in a columnar shape, with a filter screen I 621 arranged at the bottom, a silica gel 622 filled in the middle, and a threaded interface 623 connected to a pressure release point 63 on one side of the body 61 at the top; Attached Figure 6 As shown, the positive pressure release channel 64 is extended downward from the main body 61 , a filter screen II 641 is provided at the bottom, and the top is connected to the pressure release point 63 on the other side of the main body 61 through an inclined channel 642 .

[0034] like Figures 1 to 6As shown, the present technical solution constructs a redundant system through three-level pressure protection, namely, the respirator 4, the negative pressure release channel 62 and the positive pressure release channel 64. Compared with the traditional single respirator 4 structure, the transformer sudden pressure failure rate is reduced by 90%. The existing respirator 4 may be blocked in some cases, resulting in pressure imbalance and affecting the safety of the transformer; the anti-jump device 6 is used to provide backup pressure release when the respirator 4 fails to prevent the violent release of pressure from causing fluctuations in oil flow, thereby causing heavy gas action. When the respirator 4 is working normally, the anti-jump device 6 is in a standby state. When the respirator 4 is blocked and the pressure exceeds the threshold, the positive or negative pressure release channel 62 opens to release the pressure; the inverted U-shaped structure forms an oil seal isolation to prevent the silica gel 622 from directly contacting the oil vapor and prolonging the service life; the anti-jump device 6 adds double insurance and three-level pressure protection to improve reliability; the silica gel 622 is arranged in layers, and the main respirator 4 and the emergency chamber are separated to avoid cross contamination; the inverted U-shaped and inclined channel 642 structure optimizes the oil flow rate and prevents blockage.

[0035] In addition, the transformer respirator anti-jump device proposed in the present invention may also have the following additional technical features: According to one embodiment of the present invention, the pressure release point 63 is built with the following mechanism: The one-way conduction mechanism includes a baffle 632, a fixing plate 637, a return spring 638 and a magnet I 631. The top of the baffle 632 is hinged to the top of the inner wall of the body 61, the bottom of the baffle 632 is adsorbed on the magnet I 631 below, and the side of the baffle 632 is connected to the fixing plate 637 through the return spring 638. The baffle 632 is subjected to a certain pressure under the preload force of the magnet I 631 and the return spring 638. When the pressure is greater than the preload force, the baffle 632 rotates along the hinge axis. The signal conduction mechanism includes a positive electrode 635, a negative electrode 634, a magnet II 636 and a limit block 633. The limit block 633 is wedge-shaped and contacts one side of the rotated baffle 632. The ends of the positive electrode 635 and the negative electrode 634 are suspended along the hypotenuse of the wedge. The rotated baffle 632, the positive electrode 635 and the negative electrode 634 form a closed loop. The positive electrode 635 is provided with a magnet II 636, and the rotated baffle 632 is adsorbed on the magnet II 636. The positive electrode 635 and the negative electrode 634 are externally connected to a secondary junction box.

[0036] In this technical solution, the one-way conduction mechanism is used to control the one-way release of pressure to prevent backflow; the preload of magnet I 631 and the spring sets a threshold value to ensure that it will only act when the pressure exceeds a certain value; the hinged setting of the baffle 632 allows one-way rotation, which is related to the direction of pressure, that is, positive pressure and negative pressure have different conduction directions. When the baffle 632 is activated, a signal is triggered, and the limit block 633 is used to ensure that the baffle 632 rotates to a specific position so that the positive and negative poles 634 are in contact. The magnet II 636 is used to maintain the position of the baffle 632 after it rotates to ensure that the circuit continues to be turned on until it is reset. Under normal circumstances, the pressure is required to exceed 1.2 atmospheres to meet the conduction conditions.

[0037] According to one embodiment of the present invention, Figure 7 and Figure 8 As shown, the secondary junction box has built-in relays, network cable interfaces and power supply interfaces. The relay is used to keep the baffle 632 pushed open by the airflow in a rotating state. The network cable interface is connected to the backend machine and the motion scheduling network through the station control switch.

[0038] In this technical solution, when the baffle 632 of the pressure release point 63 is pushed open by the airflow, the signal conduction mechanism is closed, triggering the relay in the secondary junction box. The relay keeps the baffle 632 in the open state through the self-holding circuit to prevent it from opening and closing frequently under pressure fluctuations; at the same time, the network cable interface will transmit the status signal through the network to let the background system know that the pressure release has occurred, triggering an alarm or recording an event; the power interface ensures that the entire circuit has a stable power supply.

[0039] According to one embodiment of the present invention, the negative pressure release channel 62 also includes a transparent shell and a mesh core, the mesh core is tightly fitted to the inner wall of the transparent shell, the silica gel 622 is wrapped in the mesh core, and the silica gel 622 fills most of the space of the entire negative pressure release channel 62.

[0040] In this technical solution, the transparent shell is used to observe the internal situation, such as the state of the silica gel 622 or whether it is blocked. The mesh inner core fits tightly to the inner wall of the shell, plays the role of supporting the structure, and at the same time maintains the position of the silica gel 622 to prevent it from moving or deforming. The silica gel 622 acts as a desiccant, absorbing moisture from the air and preventing moisture from entering the oil pillow 1 or other key components; the mesh inner core helps to evenly distribute the airflow to prevent the silica gel 622 from agglomerating or being damaged by the impact of the airflow. When it is observed that the silica gel 622 needs to be replaced or the filter I 621 is blocked, it can be replaced by unscrewing it from the body 61 through the threaded interface 623.

[0041] According to an embodiment of the present invention, the positive pressure release channel 64 is integrally provided with the body 61 , and the inclined angle of the inclined channel 642 of the positive pressure release channel 64 is 45° to 60°.

[0042] In this technical solution, the 45°~60° inclination angle forms a gravity-assisted acceleration of the gas-liquid two-phase flow, and the pressure relief efficiency is increased by 40%. It is integrally cast with the body 61 (yield strength>355MPa), eliminating the risk of flange connection leakage. That is: 45° to 60° is a balance point, which optimizes the fluid passing efficiency while reducing turbulence or resistance.

[0043] According to one embodiment of the present invention, a reinforcing plate is provided between the body 61 and the fixing plate 637 , and a fixing seat is provided between the body 61 and the magnet I 631 .

[0044] In this technical solution, the reinforcing plate is used to improve the rigidity of the overall structure to prevent deformation from causing air leakage and thus affecting pressure relief; the fixing seat is used to fix the magnet I631 to prevent the magnet I631 from being driven out of its original position due to the rotation of the baffle 632.

[0045] According to one embodiment of the present invention, when the baffle 632 is in contact with the magnet I 631 , the negative pressure release channel 62 or the positive pressure release channel 64 is in a closed state, and the airflow only flows from the breathing circuit 2 to the respirator 4 .

[0046] In the present technical solution, for example, in the case of negative pressure, it is necessary to prevent the entry of external air, and in the case of positive pressure, it is necessary to release the overpressure. The baffles 632 on both sides need to adapt to these two situations, and the suction force of the magnet I 631 needs to be strong enough to maintain the closure, and can be opened in time when release is required.

[0047] Example 2 Based on Example 1, Figures 1 to 6 As shown, this embodiment provides a conduction control method for a transformer respirator anti-jump device, comprising the following steps: S1. Normal breathing process: The respirator 4 is connected to the breathing pipe 2 of the oil pillow 1 through the flange Ⅰ3, allowing the gas inside the transformer to flow freely within the normal pressure range to balance the internal and external pressures; the airflow flows through the breathing pipe 2 to the respirator 4, and the baffle 632 is kept in the closed position under the preload force of the magnet Ⅰ631 and the reset spring 638. At this time, the negative pressure release channel 62 and the positive pressure release channel 64 are both in a closed state; S2. If the respirator 4 is blocked, there are two situations: S21, negative pressure release process: when negative pressure appears inside the transformer, the negative pressure will act on the negative pressure release channel 62; under the action of negative pressure, the baffle 632 is not enough to resist the external atmospheric pressure, the airflow first enters the negative pressure release channel 62 through the filter I 621, and the silica gel 622 absorbs part of the moisture or impurities; the negative pressure continues to increase, exceeding the adsorption force between the baffle 632 and the magnet I 631 and the preload force of the reset spring 638, the baffle 632 will open, allowing external air to enter the transformer through the negative pressure release channel 62 to balance the pressure; S22, positive pressure release process: when positive pressure appears inside the transformer, the positive pressure will act on the positive pressure release channel 64; under the action of positive pressure, the baffle 632 cannot resist the internal pressure and opens, and the airflow is transmitted to the positive pressure release channel 64 through the connecting interface of the body 61, and impacts the filter screen II 641 under the guidance of the inclined channel 642 for filtering, allowing the gas inside the transformer to be discharged through the positive pressure release channel 64 to balance the pressure; S3, signal conduction and alarm process: when the baffle 632 rotates and opens due to pressure changes, the signal conduction mechanism is triggered; the rotated baffle 632 contacts the limit block 633, so that the positive electrode 635 and the negative electrode 634 form a closed loop through the baffle 632, thereby activating the relay located in the secondary junction box; after the relay is actuated, the signal is transmitted to the background machine or the motion scheduling network through the network cable interface, and an alarm or indication signal is issued, indicating that the respirator 4 is blocked or the pressure is abnormal; at the same time, the relay keeps the baffle 632 in the open state to ensure that the baffle 632 remains open before the fault is handled to continuously release the pressure.

[0048] In the present technical solution, a balance is achieved through the preload force of the magnet and the spring, the pressure relief channels on both sides are kept closed, and the airflow circulates in the breathing circuit 2 and the respirator 4; once the respirator 4 is blocked, the preload force balance is broken, and then one of the two is turned on according to the air pressure state of the breathing circuit 2, that is, the positive pressure or negative pressure state; the position of the conduction is called the pressure release point 63, and the pressure release point 63 has not only the unidirectional conduction function, but also the signal conduction function, which can be remotely controlled.

[0049] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person of ordinary skill in the art may easily think of changes or substitutions within the technical scope disclosed by the present invention, and these shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A transformer breather anti-jump device, comprising a breather (4), the breather (4) being connected to a breathing pipe (2) of an oil pillow (1) through a flange I (3), characterized in that: The breathing pipe (2) of the oil pillow (1) is also connected to an anti-jump device (6) via a flange II (5), and the anti-jump device (6) includes the following components: The body (61) is arranged in an inverted U shape, with a connecting interface connected to the breathing tube (2) penetrating the middle thereof, and two sides thereof respectively connected to the negative pressure release channel (62) and the positive pressure release channel (64) through the pressure release point (63), and is used for releasing positive pressure or negative pressure through the pressure release point (63) when the breathing device (4) is blocked; The pressure release points (63) are symmetrically arranged between the communication interface and the negative pressure release channel (62) and the positive pressure release channel (64); The negative pressure release channel (62) is arranged in a columnar shape, with a filter screen I (621) arranged at the bottom, a silica gel (622) filled in the middle, and a top connected to a pressure release point (63) on one side of the body (61) through a threaded interface (623); The positive pressure release channel (64) is extended downward from the main body (61), and a filter screen II (641) is arranged at the bottom thereof. The top thereof is connected to the pressure release point (63) on the other side of the main body (61) through an inclined channel (642).

2. The transformer respirator anti-jump device according to claim 1, characterized in that: The pressure release point (63) is built with the following mechanism: The one-way conduction mechanism comprises a baffle (632), a fixing plate (637), a return spring (638) and a magnet I (631), wherein the top end of the baffle (632) is hinged to the top of the inner wall of the body (61), the bottom end of the baffle (632) is adsorbed on the magnet I (631) below, and the side of the baffle (632) is connected to the fixing plate (637) through the return spring (638); the baffle (632) is subjected to a certain pressure under the preload force of the magnet I (631) and the return spring (638), and when the pressure is greater than the preload force, the baffle (632) rotates along the hinge axis; The signal conduction mechanism comprises a positive electrode (635), a negative electrode (634), a magnet II (636) and a stop block (633). The stop block (633) is in a wedge shape. The stop block (633) contacts one side of a rotating baffle (632). The ends of the positive electrode (635) and the negative electrode (634) are suspended along the hypotenuse of the wedge. The rotating baffle (632) and the positive electrode (635) and the negative electrode (634) form a closed loop. The positive electrode (635) is provided with a magnet II (636). The rotating baffle (632) is adsorbed on the magnet II (636). The positive electrode (635) and the negative electrode (634) are externally connected to a secondary junction box.

3. The transformer respirator anti-jump device according to claim 2, characterized in that: The secondary junction box is built with a relay, a network cable interface and a power supply interface. The relay is used to keep the baffle (632) pushed open by the airflow in a rotating state. The network cable interface is connected to the backend machine and the motion scheduling network respectively through the station control switch.

4. The transformer respirator anti-jump device according to claim 1, characterized in that: The negative pressure release channel (62) further comprises a transparent shell and a mesh inner core, the mesh inner core is tightly fitted to the inner wall of the transparent shell, the silica gel (622) is wrapped in the mesh inner core, and the silica gel (622) fills most of the space of the entire negative pressure release channel (62).

5. The transformer respirator anti-jump device according to claim 1, characterized in that: The positive pressure release channel (64) is integrally arranged with the body (61), and the inclined channel (642) of the positive pressure release channel (64) has an inclination angle of 45° to 60°.

6. The transformer respirator anti-jump device according to claim 1, characterized in that: A reinforcing plate is provided between the body (61) and the fixing plate (637), and a fixing seat is provided between the body (61) and the magnet I (631).

7. The transformer respirator anti-jump device according to claim 2, characterized in that: When the baffle (632) is in contact with the magnet I (631), the negative pressure release channel (62) or the positive pressure release channel (64) is in a closed state, and the airflow only flows from the breathing tube (2) to the respirator (4).

8. A conduction control method for a transformer breather anti-jump device, using the transformer breather anti-jump device according to any one of claims 1 to 7, characterized in that: The steps include: S1. Normal breathing process: The respirator (4) is connected to the breathing pipe (2) of the oil pillow (1) through the flange I (3), allowing the gas inside the transformer to flow freely within the normal pressure range to balance the internal and external pressures; the air flows through the breathing pipe (2) to the respirator (4), and the baffle (632) is kept in a closed position under the preload force of the magnet I (631) and the return spring (638). At this time, the negative pressure release channel (62) and the positive pressure release channel (64) are both in a closed state; S2. If the respirator (4) is blocked, there are two situations: S21. Negative pressure release process: When negative pressure appears inside the transformer, the negative pressure will act on the negative pressure release channel (62); under the action of negative pressure, the baffle (632) is not enough to resist the external atmospheric pressure, and the airflow first enters the negative pressure release channel (62) through the filter I (621), and the silica gel (622) absorbs part of the moisture or impurities; the negative pressure continues to increase, exceeding the adsorption force between the baffle (632) and the magnet I (631) and the preload force of the return spring (638), and the baffle (632) will open, allowing external air to enter the transformer through the negative pressure release channel (62) to balance the pressure; S22, positive pressure release process: when positive pressure appears inside the transformer, the positive pressure will act on the positive pressure release channel (64); under the action of positive pressure, the baffle (632) cannot resist the internal pressure and opens, and the airflow is transmitted to the positive pressure release channel (64) through the connecting interface of the body (61), and impacts the filter screen II (641) under the guidance of the inclined channel (642) for filtering, allowing the gas inside the transformer to be discharged through the positive pressure release channel (64) to balance the pressure; S3, signal conduction and alarm process: When the baffle (632) rotates and opens due to pressure changes, the signal conduction mechanism is triggered; the rotated baffle (632) contacts the limit block (633), so that the positive electrode (635) and the negative electrode (634) form a closed loop through the baffle (632), thereby activating the relay located in the secondary junction box; after the relay is actuated, the signal is transmitted to the background machine or the motion scheduling network through the network cable interface, and an alarm or indication signal is issued, indicating that the respirator (4) is blocked or the pressure is abnormal; at the same time, the relay keeps the baffle (632) in the open state, ensuring that the baffle (632) remains open before the fault is handled to continuously release the pressure.

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