A transformer relay with oil-electricity separation and its reset method

Abstract

The application provides an oil-electricity separated transformer relay and a reset method thereof. The transformer relay comprises an oil passing cavity, an electric cavity, a baffle, a plate magnet, a first transition magnet and a first dry reed. The electric cavity is arranged independently from the oil passing cavity and is located at the lower end of the oil passing cavity. The oil passing cavity has an oil inlet and an oil outlet. The baffle is rotatably arranged in the oil passing cavity. The plate magnet is arranged on the baffle. The first dry reed is horizontally arranged in the electric cavity. The first transition magnet is arranged between the oil passing cavity and the electric cavity. The application can avoid insulation drop of the first dry reed and formation of a small carbon bridge. When the first dry reed is maintained, the transformer oil circuit does not need to be cut off, so that the overall sealing of the transformer is not damaged.

Description

Technical Field

[0001] The invention relates to an oil-electricity separation transformer relay and a resetting method thereof. Background Art

[0002] The transformer relay is an important safety protection device on oil-immersed transformers. It is installed on the connecting pipe between the transformer cover and the oil conservator. Under the action of gas or oil flow generated by internal transformer faults, it connects the signal or trip circuit, causing the relevant devices to send out alarm signals or cut off the transformer from the power grid, thereby protecting the transformer.

[0003] The transformer relay sends a fault signal by checking whether the reed switch is connected or not. In the existing transformer relay, the reed switch and the baffle are located in the same space. Therefore, during the use of the relay, the reed switch is immersed in the transformer oil. Such an arrangement has the following defects: 1. The reed switch pins are exposed to the oil, which is prone to malfunction due to insulation degradation, and it is easy for a small carbon bridge to form at the exposed part of the reed switch pins. The formation of the small carbon bridge will lead to insufficient creepage distance of the reed switch, and even the carbon bridge breakdown will occur, affecting the normal use of the reed switch and posing a considerable safety hazard to the transformer. In particular, when the gas relay is used to switch the oil chamber of the on-load switch, carbon will be generated after switching regardless of whether the arc is extinguished in the oil or in a vacuum. Light carbon enters the gas relay, and the electrical circuits such as the glass hot-melt pins of the reed switch are more susceptible to contamination, causing malfunction of the gas relay. The reed switch immersed in oil has to withstand a pressure of ±0.1Mpa and is easily broken. 2. When inspecting and maintaining the reed switch, the oil circuit of the transformer must be cut off before it can be disassembled. 1. The oil flow velocity relay destroys the overall sealing of the transformer, and all the transformer oil needs to be reprocessed, which is very inconvenient; 2. The existing probe reset mechanism makes it impossible to completely seal the oil cavity, and there is a risk of oil leakage; 3. The gas accumulation area and the oil flow area of ​​the existing transformer relay are fixed, that is, the gas accumulation area must be located above the baffle. Therefore, when installing the transformer relay, attention must be paid to ensuring the positional relationship between the two. However, in actual use, the installation space reserved for the transformer relay may not meet this requirement. At this time, other structures need to be set up to assist in the installation, or the transformer relay must be replaced with one that is suitable for the installation space, making the installation work very troublesome. On the other hand, the turbulence in the gas accumulation area has a great influence on the oil flow, which will affect the accuracy of the transformer relay; 5. When inspecting and maintaining the reed switch, the transformer oil circuit must be cut off before the transformer relay can be removed, which destroys the overall sealing of the transformer, and all the transformer oil needs to be reprocessed, which is very inconvenient. Summary of the Invention

[0004] The present invention provides an oil-electricity separated transformer relay and a reset method thereof. During use, the first reed switch does not come into contact with oil, thereby preventing the insulation of the first reed switch from decreasing and forming a carbon bridge. In addition, when maintaining the first reed switch, there is no need to cut off the transformer oil circuit.

[0005] The present invention is achieved through the following technical solutions:

[0006] A transformer relay with oil-electricity separation includes an oil passage chamber, an electrical chamber, a baffle, a plate magnet, a first transition magnet and a first reed switch. The electrical chamber and the oil passage chamber are arranged independently and the electrical chamber is located at the lower end of the oil passage chamber. The oil passage chamber has an oil inlet and an oil outlet. The baffle is rotatably arranged in the oil passage chamber, the plate magnet is arranged on the baffle, the first reed switch is horizontally arranged in the electrical chamber, and the first transition magnet is arranged between the oil passage chamber and the electrical chamber. The baffle rotates under the action of oil flow, causing the plate magnet to move from a normal position to a fault position. The first transition magnet is close to the fault position and corresponds to the action position of the first reed switch. When the plate magnet is in the fault position, the first transition magnet is magnetized to have magnetism. When the plate magnet is in the normal position, the magnetism of the first transition magnet disappears.

[0007] Furthermore, it also includes an air storage chamber arranged at the upper end of the oil passage chamber and connected to the oil passage chamber, and a plurality of Hall liquid level sensors arranged vertically at intervals on the outside of the air storage chamber. The air storage chamber and the electrical chamber are arranged independently. The Hall liquid level sensor is used to detect the liquid level of the oil in the air storage chamber and send a signal at the corresponding liquid level.

[0008] Furthermore, it also includes an air storage chamber arranged at the upper end of the oil passage chamber and connected to the oil passage chamber, a plurality of second reed switches arranged vertically at intervals on the outside of the air storage chamber, a guide mechanism arranged vertically on the inside of the air storage chamber, a floating block arranged in the air storage chamber and a liquid level magnet arranged in the floating block. The guide mechanism has a vertical track, and the floating block moves up and down in the track as the liquid level in the air storage chamber changes, so as to detect the liquid level of the oil in the air storage chamber and send a signal at the corresponding liquid level.

[0009] Furthermore, it also includes an air storage chamber and a connecting pipe. At least two different surfaces of the oil passage chamber that are not provided with an oil inlet and an oil outlet are provided with a closable first through hole, and a closable second through hole is provided at the bottom of the air storage chamber. The air storage chamber is connected to the oil passage chamber through the cooperation of the connecting pipe and the second and third through holes, and is located at the upper part of the oil passage chamber.

[0010] Furthermore, it also includes a reset chamber arranged at the end of the oil passage chamber and a reinforcing magnet arranged in the oil passage chamber. An electromagnet is arranged in the reset chamber. When the plate magnet is in the fault position, the transition magnet and the reinforcing magnet are magnetized respectively, and are attracted by the magnetized reinforcing magnet. When resetting, the electromagnet is energized to attract or repel the plate magnet from the fault position and push it back to the normal position.

[0011] Further, the transition magnet comprises a vertical part extending upward into the oil passing cavity, and the plate magnet is attracted or repelled by the vertical part and the reinforcing magnet when the plate magnet is in the fault position.

[0012] Further, the adjusting mechanism comprises an adjusting plate arranged at the rear end of the second inclined plate, a strip-shaped hole arranged on the adjusting plate and extending in the same direction as the adjusting plate, a guide plate arranged on both sides of the strip-shaped hole, an adjusting rod passing through the strip-shaped hole and moving in the strip-shaped hole with the rotation of the oil flow plate, and a spring rod arranged at the lower end of the adjusting rod and extending out of the shell at the upper end.

[0013] The present application also realizes the following technical solutions:

[0014] Based on the reset method of the oil-electricity separated transformer relay, when the electromagnet is powered, the magnetic force greater than the reinforcing magnet is generated to attract or repel the plate magnet from the fault position to the normal position.

[0015] The present application also realizes the following technical solutions:

[0016] An oil-electricity separated transformer relay comprises an oil passing cavity, an electric cavity, a baffle, a plate magnet and a first dry reed tube, the electric cavity is arranged horizontally and independently from the oil passing cavity, the oil passing cavity has an oil inlet and an oil outlet, the baffle is rotatably arranged in the oil passing cavity, the plate magnet is arranged on the baffle, the first dry reed tube is vertically arranged in the electric cavity, the baffle is rotated under the action of oil flow to make the plate magnet move from the normal position to the fault position, and the first dry reed tube is affected by the plate magnet to act when the plate magnet is in the fault position.

[0017] Further, a plurality of first dry reed tubes are vertically and spacedly arranged in the electric cavity, and a self-holding magnet is arranged in the oil passing cavity to attract the plate magnet when the plate magnet is in the fault position.

[0018] The present application has the following beneficial effects:

[0019] 1. When a transformer fails, oil flows into the oil chamber from the oil inlet and leaves the oil chamber from the oil outlet. During this process, the baffle rotates under the action of the oil flow, causing the plate magnet to move from the normal position to the fault position. When the plate magnet is in the fault position, the first transition magnet becomes magnetic, and the first reed switch is affected by the magnetic force of the first transition magnet and moves. Since the flow chamber and the electrical chamber are two independent chambers, the first reed switch arranged in the electrical chamber will never come into contact with the oil at any time, thereby avoiding the insulation degradation, formation of carbon bridges and breakage of the first reed switch pins due to immersion in oil in the prior art, thereby ensuring the sensitivity and service life of the first reed switch; when the first reed switch needs to be inspected and maintained, there is no need to cut it because the oil flow does not flow through the electrical chamber. To cut off the oil circuit of the transformer, it is only necessary to open the electrical cavity, which is convenient for maintenance and avoids damaging the overall sealing of the transformer; the electrical cavity is located below the oil cavity, and in bad weather such as rain, it can prevent water from entering the electrical cavity and causing damage to electrical components, thereby extending the service life of the oil flow speed relay. However, the electrical cavity is set below the oil cavity, which increases the distance between the first reed switch and the plate magnet. This may cause the magnetic force of the plate magnet to weaken when it reaches the first reed switch, thereby causing the first reed switch to fail to operate normally. Therefore, a first transition magnet is set in the partition. After the plate magnet is located in the fault position, the first transition magnet is magnetized by the plate magnet and has magnetism. This magnetism ensures that the first reed switch can operate in time, thereby ensuring the normal use of the oil flow speed relay.

[0020] 2. When a transformer fails, gas is generated. When the amount of gas is small, it rises from the oil chamber to the gas storage chamber, thereby reducing the oil level in the gas storage chamber. The first sensing mechanism can detect the oil level in the gas storage chamber and send a signal at the corresponding level. The first sensing mechanism can be a plurality of Hall effect level sensors vertically spaced outside the gas storage chamber, or a plurality of second reed switches vertically spaced outside the gas storage chamber and a liquid level magnet arranged in the gas storage chamber. That is, all electrical components are arranged outside the gas storage chamber, so that the electrical components will not come into contact with the oil during operation.

[0021] 3. At least two different surfaces of the oil passage chamber that are not provided with the oil inlet and the oil outlet are provided with a closable first through hole. During installation, according to the specific installation environment, first install the oil passage chamber, then select the first through hole located on the upper end surface of the oil passage chamber, and connect the first through hole with the second through hole at the bottom of the gas storage chamber through a connecting pipe, so that the gas storage chamber is located above the oil passage chamber, ensuring that the gas relay can work normally. Since multiple first through holes are provided, it is adaptable to a variety of different installation environments, the operation is more convenient, and the installation efficiency is also high.

[0022] 4. When the plate magnet is in the fault position, it should be attracted by the magnetized transition magnet. However, because the transition magnet is arranged between the oil chamber and the electrical chamber, the magnetism of the transition magnet may not be strong enough due to the limitation of the installation position. This will cause the plate magnet to return to the normal position when the transformer fault is not resolved. After the plate magnet returns to the normal position, the first reed switch no longer sends a signal, which may eventually lead to more serious consequences. Therefore, a reinforcing magnet is set in the oil chamber. When the plate magnet is in the fault position, the reinforcing magnet will also be magnetized. The installation space of the reinforcing magnet in the oil chamber will not be restricted, thereby ensuring that the magnetic force after magnetization is sufficient to attract the plate magnet, thereby avoiding the above-mentioned situation where the plate magnet returns to the normal position by itself. When the fault is cleared and the plate magnet can be reset, the electromagnet is energized. The electromagnet generates a magnetic force greater than the reinforcing magnet, and attracts the plate magnet from the fault position to the normal position. In this way, the oil chamber can be completely sealed, thereby eliminating oil leakage in the oil chamber.

[0023] 5. The transition magnet includes a vertical portion extending upward into the oil passage chamber. When the plate magnet is in the fault position, one side surface and one end surface away from the oil inlet are respectively adsorbed by the magnetized vertical portion and the reinforcing magnet, which can better ensure that the plate magnet will not be reset to the normal position when the transformer fault is not resolved.

[0024] 6. During use, the inclination of the baffle can be adjusted by the adjustment mechanism according to the oil flow velocity in the actual working conditions, so that the force pushing the baffle is reduced or increased, thereby improving the versatility of the oil flow speed relay. In the present invention, the upper end of the spring rod extends out of the housing, so it can be adjusted externally, which is convenient and quick.

[0025] 7. The oil chamber and the electrical chamber are independent of each other and arranged horizontally, and the first reed switch is vertically arranged in the electrical chamber. In this way, in addition to preventing the first reed switch from contacting the oil, by making the partition thin and arranging the plate magnet close to the first reed switch, it can be ensured that the plate magnet will activate the first reed switch in the fault position, thereby allowing the plate magnet to directly drive the first reed switch, and the structure is simpler.

[0026] 8. For some occasions where prevention of false operation is important, the oil flow speed relay can only perform protective action when multiple first reed switches send signals in sequence. Therefore, multiple first reed switches are arranged at vertical intervals in the electrical cavity. In the process of the plate magnet moving from the normal position to the fault position, the first reed switches will be affected by the plate magnet in sequence and operate step by step, thereby meeting the requirements of preventing false operation. A self-holding magnet is set in the oil passage cavity. When the plate magnet is in the fault position, it adsorbs the plate magnet, so that the plate magnet can achieve self-holding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Figure 1-1This is a schematic cross-sectional view of a plate magnet in a normal position according to an embodiment of the present invention.

[0029] Figure 1-2 Schematic diagram of the cross-sectional structure of a plate magnet located at a fault position according to an embodiment of the present invention.

[0030] Figure 2 Schematic diagram of the cross-sectional structure of the plate magnet in the fault position according to the second embodiment of the present invention.

[0031] Figure 3-1 This is a schematic cross-sectional view of the plate magnet in the normal position according to the third embodiment of the present invention.

[0032] Figure 3-2 Schematic diagram of the cross-sectional structure of the third plate magnet in the fault position according to the embodiment of the present invention.

[0033] Figure 3-3 This is a schematic structural diagram of the oil chamber and electrical chamber according to the third embodiment of the present invention.

[0034] Figure 4 Schematic diagram of the cross-sectional structure of the plate magnet in the normal position according to the fourth embodiment of the present invention.

[0035] Figure 5-1 This is a schematic cross-sectional view of the plate magnet in a normal position according to the fifth embodiment of the present invention.

[0036] Figure 5-2 Schematic diagram of the cross-sectional structure of the plate magnet in the fifth embodiment of the present invention at the fault position.

[0037] Figure 6-1 Schematic diagram of the cross-sectional structure of the plate magnet in the normal position according to the sixth embodiment of the present invention.

[0038] Figure 6-2 Schematic diagram of the structure of the guide plate according to the sixth embodiment of the present invention.

[0039] Figure 6-3 for Figure 6-2 Schematic diagram of the top view structure.

[0040] Figure 7-1 This is a structural diagram of embodiment 7 of the present invention.

[0041] Figure 7-2 Schematic diagram of the cross-sectional structure of the plate magnet in the normal position according to the seventh embodiment of the present invention.

[0042] Figure 7-3 Schematic diagram of the cross-sectional structure of the plate magnet in the fault position according to the seventh embodiment of the present invention.

[0043] Among them, 1. Shell; 11. Third through hole; 2. Partition; 21. Arc track; 3. Oil chamber; 31. Oil inlet; 32. Oil outlet; 33. Bracket; 34. Rotating shaft; 35. Second inclined plate; 36. Self-holding magnet; 37. Strengthening magnet; 38. Top plate; 39. First through hole; 310. First extension tube; 4. Electrical chamber; 51. Oil flow plate; 52. First inclined plate; 6. Plate magnet; 7. First transition magnet; 71. Rectangular portion; 72. Vertical portion; 8. First reed switch; 9. Complex Position cavity; 91, electromagnet; 101, adjustment plate; 102, strip hole; 103, guide plate; 104, adjustment rod; 105, spring rod; 110, air storage cavity; 1101, air injection port; 1102, Hall effect liquid level sensor; 1103, second reed switch; 1104, floating block; 1105, liquid level magnet; 1106, guide plate; 1107, L-shaped plate; 1108, buffer pad; 1109, second through hole; 1110, second extension tube; 111, connecting tube; 112, flange.

[0044] The arrows in the figure indicate the direction of oil flow. DETAILED DESCRIPTION

[0045] Example 1:

[0046] like Figure 1-1 and Figure 1-2As shown, the oil-electricity separation transformer relay comprises a shell 1, a partition plate 2, a baffle, a plate magnet 6, a first transition magnet 7, a reinforcing magnet 37, a reset cavity 9, an electromagnet 91, a first dry reed 8, a support 33, a rotating mechanism and an adjusting mechanism. The shell 1 and the partition plate 2 are both made of a plate material through which a magnetic signal can penetrate. The partition plate 2 separates the shell 1 into an independent oil passing cavity 3 and an electric cavity 4. The oil passing cavity 3 and the electric cavity 4 are vertically arranged. The electric cavity 4 is located at the lower end of the oil passing cavity 3. The oil passing cavity 3 has an oil inlet 31 and an oil outlet 32. The shell 1 is provided with a third through hole 11 which respectively communicates with the oil inlet 31 and the oil outlet 32. The upper end of the baffle is rotatably arranged in the oil passing cavity 3 through the rotating mechanism. The plate magnet 6 is arranged at the lower part of the baffle. The reinforcing magnet 37 is arranged at the bottom of the oil passing cavity 3 by means of sticking. The first dry reed 8 is horizontally arranged in the electric cavity 4. An installation slot is formed in the partition plate 2. The first transition magnet 7 can be arranged in the installation slot by means of sticking or the like. It is required to ensure that the installation slot does not communicate with the electric cavity 4. Compared with the first transition magnet 7, the reinforcing magnet 37 is located farther from the oil inlet 31. The baffle rotates under the action of oil flow, so that the plate magnet 6 moves from a normal position to a fault position. The first transition magnet 7 is close to the fault position and corresponds to the action position of the first dry reed 8. The action position of the first dry reed 8 is the position at which the internal dry reed of the first dry reed 8 acts under the action of an external magnetic field. It is prior art that the first transition magnet 7 and the reinforcing magnet 37 are magnetized when the plate magnet 6 is located at the fault position. The first transition magnet 7 makes the first dry reed 8 act. The reinforcing magnet 37 adsorbs the plate magnet 6. After the plate magnet 6 is reset, the magnetism of the first transition magnet 7 and the reinforcing magnet 37 disappears. The plate magnet 6 is a cuboid magnet with a length sufficient to ensure that the first transition magnet can be magnetized, thereby ensuring the normal action of the first dry reed. During installation, a connecting pipe connected between a transformer box cover and an oil storage tank is inserted into the third through hole 11 of the shell 1, so as to communicate with the oil inlet 31 and the oil outlet 32.

[0047] In the embodiment, the reset cavity 9 is arranged outside the shell 1 and located behind the oil passing cavity 3, i.e. close to the oil outlet 32. The specific structure of the reset cavity 9 arranged outside the shell 1 is prior art. The electromagnet 91 is arranged in the reset cavity 9 and can be fixed by means of a bolt or other structures. The specific fixing structure is prior art. During reset, the electromagnet 91 is powered on, so as to repel and push the plate magnet from the fault position to the normal position. In another embodiment, the reset cavity can also be arranged in front of the oil passing cavity 3. During reset, the electromagnet is powered on, so as to adsorb and push the plate magnet 6 from the fault position to the normal position. The process of making the electromagnet have repulsion or attraction with the plate magnet 6 is prior art.

[0048] A bracket 33 is disposed within the oil passage chamber 3. The bracket 33 comprises two spaced-apart support plates, the upper ends of which are positioned at the top of the housing 1. The baffle includes an oil flow plate 51, which bears the impact of the oil flow, and a first inclined plate 52 disposed at the lower end of the oil flow plate 51. The plate magnet 6 is disposed at the rear end of the first inclined plate 52. The rotation mechanism comprises a rotation shaft 34 disposed on the two support plates, and two second inclined plates 35 extending rearward from the upper ends of the oil flow plate 51. The two second inclined plates 35 are rotatably mounted on the rotation shaft 34. The lower ends of the baffles are tilted toward the oil inlet 31, with the normal position closer to the oil inlet 31 and the fault position farther away from the oil inlet 31. In this embodiment, when the plate magnet 6 is in the fault position, the end closest to the oil outlet 32 ​​is attracted by the reinforcing magnet 37. To maximize the contact surface between the plate magnet 6 and the reinforcing magnet 37, the reinforcing magnet 37 has the same tilt angle as when the plate magnet 6 is in the fault position. The specific mounting structure of the rotation shaft 34 is conventional.

[0049] The adjustment mechanism includes an adjustment plate 101 disposed at the rear end of a second inclined plate 35 , a strip-shaped hole 102 provided on the adjustment plate 101 and extending in the same direction as the adjustment plate 101 , guide plates 103 provided on either side of the strip-shaped hole 102 , an adjustment rod 104 disposed through the strip-shaped hole 102 and movable within the strip-shaped hole 102 as the oil flow plate 51 rotates, and a spring rod 105 with its lower end attached to the adjustment rod 104 and its upper end extending out of the housing 1 . The specific mounting structure of the adjustment rod 104 is conventional. The specific structure of the spring rod 105 is conventional.

[0050] In this embodiment, the housing 1 and the partition plate 2 are both made of aluminum alloy. The first transition magnet 7 is made of soft iron.

[0051] Example 2:

[0052] The difference between this embodiment and the first embodiment is that:

[0053] like Figure 2 As shown, the first transition magnet 7 comprises a rectangular portion 71 positioned within the partition 2 and a vertical portion 72 disposed on the rectangular portion 71 and extending upward into the oil passage chamber 3. When the plate magnet 6 is in the fault position, the first transition magnet 7 and the reinforcing magnet 37 are magnetized, and two different faces of the plate magnet 6 are attracted to the vertical portion 72 and the reinforcing magnet 37, respectively. These two different faces can be any two faces other than those near the oil inlet 31, as long as they do not affect the repositioning of the plate magnet 6. In this embodiment, the vertical portion 72 attracts one side of the plate magnet 6, while the reinforcing magnet 37 attracts the face of the plate magnet 6 near the oil outlet 32.

[0054] The rest of this embodiment is the same as that of the first embodiment and will not be described again here.

[0055] Example 3:

[0056] The difference between this embodiment and the first embodiment is that:

[0057] like Figure 3-1 、 Figure 3-2 and Figure 3-3 ( Figure 3-3 The housing is shown only as a simple diagram in order to show the positional relationship between the oil chamber 3 and the electrical chamber 4, which are arranged horizontally. The oil flow separation oil flow speed relay includes a housing 1, a partition 2, a baffle, a plate magnet 6 and a first reed switch 8. The housing 1 and the partition 2 are both made of a plate material that can penetrate magnetic signals. The partition 2 separates the housing 1 into an independent oil chamber 3 and an electrical chamber 4. The oil chamber 3 and the electrical chamber 4 are arranged horizontally. The oil chamber 3 has an oil inlet 31 and an oil outlet 32. Figure 3-2 The electrical chamber 4 is located to the left of the oil passage chamber 3, as viewed from the direction of the oil outlet 32 ​​shown in FIG. A baffle is rotatably disposed within the oil passage chamber 3. A plate magnet 6 is disposed on the baffle. A first reed switch 8 is vertically disposed within the electrical chamber 4. The baffle rotates under the action of the oil flow, causing the plate magnet 6 to move from the normal position to the fault position. When the plate magnet 6 is in the fault position, the first reed switch 8 is affected by the plate magnet 6 and actuated. The plate magnet 6 is a rectangular parallelepiped magnet with an appropriate magnetic force to ensure that its magnetic force does not simultaneously affect two or more first reed switches 8.

[0058] The rest of this embodiment is the same as that of the first embodiment and will not be described again here.

[0059] Example 4:

[0060] like Figure 4 As shown, the difference between this embodiment and the fourth embodiment is that:

[0061] Three first reed switches 8 are vertically spaced apart in the electrical chamber 4. The three first reed switches 8 are arranged along the trajectory of the plate magnet 6 from the normal position to the fault position. The position of the first reed switch 8 farthest from the oil inlet 31 corresponds to the fault position. In the process of the plate magnet 6 moving from the normal position to the fault position, the three first reed switches 8 are successively affected by the magnetic force of the plate magnet 6 and move step by step. A self-holding magnet 36 is provided in the oil passage chamber 3. The self-holding magnet 36 is set in the fault position to attract the plate magnet 6 when the plate magnet 6 is in the fault position.

[0062] The rest of this embodiment is the same as that of the fourth embodiment and will not be described again here.

[0063] Embodiment 5:

[0064] like Figure 5-1 and Figure 5-2As shown, the oil-electricity separation transformer relay of this embodiment also includes an air storage chamber 110 disposed on and connected to the oil passage chamber 3 top plate 38. A first through hole 39 is formed in the oil passage chamber 3 top plate 38, connecting the oil passage chamber 3 with the air storage chamber 110. A closable air inlet 1101 is formed at the top of the air storage chamber 110. During normal use, the air inlet 1101 is sealed, and the specific sealing structure is conventional. Multiple liquid level markings are vertically spaced along the outer wall of the air storage chamber 110. A Hall effect level sensor 1102 is disposed at each level marking. The Hall effect level sensor 1102 is used to detect the oil level within the air storage chamber 110. When the liquid level reaches a certain level marking, the corresponding Hall effect level sensor 1102 emits a signal. The Hall effect level sensor 1102 can be attached to the outer side of the air storage chamber 110 by adhesive bonding or other means.

[0065] A second sensing mechanism is provided outside the oil passage chamber 3 to detect the oil level in the oil passage chamber 3 . The second sensing mechanism is also a Hall level sensor 1102 , and its setting method is the same as that of the Hall level sensor 1102 outside the air storage chamber 110 .

[0066] This embodiment does not provide an adjustment mechanism.

[0067] In this embodiment, the air storage chamber 110 is made of aluminum alloy.

[0068] The rest of this embodiment is the same as that of the first embodiment and will not be described again here.

[0069] Example 6:

[0070] like Figure 6-1 、 Figure 6-2 and Figure 6-3 As shown, the difference between this embodiment and the first embodiment is that:

[0071] The oil-electricity-separated transformer relay of this embodiment also includes an air storage chamber 110 disposed on and connected to the oil passage chamber 3's top plate 38. A first through hole 39 is defined in the top plate 38, connecting the oil passage chamber 3 and the air storage chamber 110. A closable air inlet 1101 is defined at the top of the air storage chamber 110. During normal use, the air inlet 1101 is sealed, and the specific sealing structure is conventional. Multiple liquid level markings are vertically spaced along the outer wall of the air storage chamber 110, each of which is provided with a second reed switch 1103. A guide mechanism is vertically disposed on one side of the air storage chamber 110 near the second reed switch 1103. A floating block 1104 is disposed within the air storage chamber 110, and a liquid level magnet 1105 is located within the floating block 1104. The guide mechanism includes a guide plate 1106 vertically arranged inside the air storage chamber 110 and two L-shaped plates 1107 respectively arranged on both sides of the two guide plates 1106. There is a gap between the two L-shaped plates 1107. The guide plate 1106 and the two L-shaped plates 1107 form a vertical track. The floating block 1104 is a hollow capsule made of a material that can float on oil. The liquid level magnet 1105 is arranged in the hollow capsule. The hollow capsule is horizontally arranged between the two L-shaped plates 1107, so that the liquid level magnet 1105 can move up and down in the vertical track as the liquid level in the air storage chamber 110 changes. More specifically, the hollow capsule floats on the oil surface and follows The position of the hollow capsule changes with the oil level. When the liquid level reaches a certain level mark, the liquid level magnet 1105 in the hollow capsule activates the corresponding second reed switch 1103, thereby sending a signal. The two ends of the hollow capsule are restrained by two L-shaped plates 1107, which restrict it to up and down movement within the vertical track. This prevents the liquid level magnet 1105 from moving away from the second reed switch 1103, which could cause the device to malfunction. A buffer pad 1108 is also provided at the top of the air storage chamber 110. The buffer pad 1108 is located above the vertical track to prevent the floating block 1104 from colliding with the top of the air storage chamber 110 when the transformer vibrates. In this embodiment, the hollow capsule is made of oil-resistant foam material. The specific mounting structure of the second reed switch 1103 is conventional.

[0072] The liquid level magnet 1105 with an appropriate magnetic force is selected so that the liquid level magnet 1105 can activate the correct second reed switch 1103 without affecting other second reed switches 1103 .

[0073] The rest of this embodiment is the same as that of the first embodiment and will not be described again here.

[0074] Embodiment seven:

[0075] like Figure 7-1 、 Figure 7-2 and Figure 7-3 As shown, the difference between this embodiment and the first embodiment is that:

[0076] The oil-electricity separation transformer relay of the embodiment further comprises a gas storage cavity 110 and a communication pipe 111. The oil passing cavity 3 is a cuboid, the oil inlet 31 and the oil outlet 32 of the oil passing cavity 3 are arranged on two opposite side plates respectively, the top plate 38, the bottom plate and the remaining two side plates of the oil passing cavity 3 are all provided with closable first through holes 39, the first through holes 39 on each plate are all close to the oil outlet 32, and each first through hole 39 is provided with a first extension pipe 310 extending outward and perpendicular to the surface where the first through hole 39 is located. The bottom of the gas storage cavity 110 is provided with a closable second through hole 1109, and the second through hole 1109 is also provided with a second extension pipe 1110 extending downward, the gas storage cavity 110 is communicated with the oil passing cavity 3 through the cooperation of the first through hole 39, the second through hole 1109 and the communication pipe 111, and is located at the upper part of the oil passing cavity 3, more specifically, the two ends of the communication pipe 111 are connected with the first extension pipe 310 and the second extension pipe 1110 through flanges 112 respectively. In other embodiments, the communication between the communication pipe 111 and the oil passing cavity 3 and the gas storage cavity 110 can also be realized through other structures. For the first extension pipe 310 which is not communicated with the communication pipe 111, a closing plate is used to close it, and the connection between the closing plate and the first extension pipe 310 can also be realized through a flange.

[0077] The embodiment is not provided with an adjusting mechanism.

[0078] In the embodiment, the gas storage cavity 110 is made of aluminum alloy material.

[0079] The other parts of the embodiment are the same as those of the first embodiment, and will not be described here.

[0080] The above is only the preferred embodiment of the present application, and therefore cannot limit the scope of the present application, that is, equivalent changes and modifications made according to the patent application scope and the content of the specification of the present application should still be within the scope of the present application.

Claims

1. A transformer relay with oil-electricity separation, characterized by: It includes an oil passage chamber, an electrical chamber, a baffle, a plate magnet, a first transition magnet and a first reed switch. The electrical chamber and the oil passage chamber are arranged independently and the electrical chamber is located at the lower end of the oil passage chamber. The oil passage chamber has an oil inlet and an oil outlet. The baffle is rotatably arranged in the oil passage chamber. The plate magnet is arranged on the baffle. The first reed switch is horizontally arranged in the electrical chamber. The first transition magnet is arranged between the oil passage chamber and the electrical chamber. The baffle rotates under the action of the oil flow to make the plate magnet move from the normal position to the fault position. The first transition magnet is close to the fault position and corresponds to the action position of the first reed switch. When the plate magnet is in the fault position, the first transition magnet is magnetized to have magnetism. When the plate magnet is in the normal position, the magnetism of the first transition magnet disappears. It also includes a switch arranged at the upper end of the oil passage chamber and corresponding to the fault position. An air storage chamber connected to the oil chamber, a plurality of second reed switches vertically spaced outside the air storage chamber, a guide mechanism vertically arranged inside the air storage chamber, a floating block arranged in the air storage chamber, and a liquid level magnet arranged in the floating block, wherein the guide mechanism has a vertical track, and the floating block moves up and down within the vertical track as the liquid level in the air storage chamber changes to detect the liquid level of the oil in the air storage chamber and sends a signal when the liquid level reaches a corresponding level; the air storage chamber and a connecting pipe are also included, at least two different surfaces of the oil passage chamber not provided with an oil inlet and an oil outlet are provided with a closable first through hole, and a closable second through hole is provided at the bottom of the air storage chamber, the air storage chamber is connected to the oil passage chamber through the connecting pipe cooperating with the first through hole and the second through hole respectively, and the air storage chamber is located above the oil passage chamber; It also includes a reset chamber arranged at the end of the oil flow chamber and a reinforcing magnet arranged in the oil flow chamber, an electromagnet is arranged in the reset chamber, and when the plate magnet is in the fault position, the first transition magnet and the reinforcing magnet are magnetized respectively, and are attracted by the magnetized reinforcing magnet; the first transition magnet includes a vertical portion extending upward into the oil flow chamber, and two different surfaces of the plate magnet are attracted by the magnetized vertical portion and the reinforcing magnet respectively; it also includes an adjusting mechanism, a bracket is arranged in the oil flow chamber, the upper end of the baffle is rotatably arranged on the bracket through a rotating mechanism, and the lower end of the baffle is inclined toward the oil inlet, the normal position is close to the oil inlet, and the fault position is away from the oil inlet; the baffle includes an oil flow plate that withstands the impact of the oil flow and a plate arranged at the lower end of the oil flow plate The first inclined plate, the plate magnet is arranged at the rear end of the first inclined plate, and the rotating mechanism includes a rotating shaft arranged on the bracket, two second inclined plates arranged at the upper ends of both sides of the oil flow plate and extending backward, and the two second inclined plates are rotatably arranged on the rotating shaft; the adjusting mechanism includes an adjusting plate arranged at the rear end of one of the second inclined plates, a strip hole arranged on the adjusting plate and extending in the same direction as the adjusting plate, guide plates respectively arranged on both sides of the strip hole, an adjusting rod passing through the strip hole and movable in the strip hole as the oil flow plate rotates, and a spring rod with a lower end arranged on the adjusting rod and an upper end extending through the oil chamber; when resetting, the electromagnet is energized to generate a magnetic force greater than that of the strengthening magnet, so as to absorb or repel the plate magnet from the fault position to the normal position.

2. A transformer relay with oil-electricity separation, characterized by: The oil passage chamber comprises an oil passage chamber, an electrical chamber, a baffle, a plate magnet, a first transition magnet and a first reed switch. The electrical chamber and the oil passage chamber are independently arranged and the electrical chamber is located at the lower end of the oil passage chamber. The oil passage chamber has an oil inlet and an oil outlet. The baffle is rotatably arranged in the oil passage chamber. The plate magnet is arranged on the baffle. The first reed switch is horizontally arranged in the electrical chamber. The first transition magnet is arranged between the oil passage chamber and the electrical chamber. The baffle rotates under the action of the oil flow to make the plate magnet move from a normal position to a fault position. The first transition magnet is close to the fault position and corresponds to the action position of the first reed switch. When the plate magnet is located in the fault position, the first transition magnet is magnetized to have magnetism. When the plate magnet is located in the normal position, the magnetism of the first transition magnet disappears. It includes an air storage chamber arranged at the upper end of the oil passage chamber and connected to the oil passage chamber, and a plurality of Hall liquid level sensors arranged at vertical intervals on the outside of the air storage chamber. The air storage chamber and the electrical chamber are arranged independently. The Hall liquid level sensor is used to detect the liquid level of the oil in the air storage chamber and send a signal when the liquid level is corresponding; it also includes an air storage chamber and a connecting pipe. At least two different surfaces of the oil passage chamber where no oil inlet and oil outlet are set are provided with a closable first through hole, and a closable second through hole is provided at the bottom of the air storage chamber. The air storage chamber is connected to the oil passage chamber through the connecting pipe with the first through hole and the second through hole respectively, and the air storage chamber is located at the upper part of the oil passage chamber; it also includes a reset chamber arranged at the end of the oil passage chamber and a reinforcing magnetic chamber arranged in the oil passage chamber. Iron, an electromagnet is provided in the reset chamber, and when the plate magnet is in the fault position, the first transition magnet and the strengthening magnet are magnetized respectively, and are attracted by the magnetized strengthening magnet; the first transition magnet includes a vertical portion extending upward into the oil passage chamber, and two different surfaces of the plate magnet are attracted by the magnetized vertical portion and the strengthening magnet respectively; an adjusting mechanism is also included, and a bracket is provided in the oil passage chamber, and the upper end of the baffle is rotatably provided on the bracket through a rotating mechanism, and the lower end of the baffle is inclined toward the oil inlet, the normal position is close to the oil inlet, and the fault position is away from the oil inlet; the baffle includes an oil flow plate that withstands the impact of the oil flow and a first inclined plate provided at the lower end of the oil flow plate, and the plate magnet is provided At the rear end of the first inclined plate, the rotating mechanism includes a rotating shaft arranged on the bracket, two second inclined plates arranged at the upper ends of both sides of the oil flow plate and extending backward, and the two second inclined plates are rotatably arranged on the rotating shaft; the adjusting mechanism includes an adjusting plate arranged at the rear end of one of the second inclined plates, a strip hole arranged on the adjusting plate and extending in the same direction as the adjusting plate, guide plates respectively arranged on both sides of the strip hole, an adjusting rod passing through the strip hole and movable in the strip hole as the oil flow plate rotates, and a spring rod with a lower end arranged on the adjusting rod and an upper end extending through the oil chamber; when resetting, the electromagnet is energized to generate a magnetic force greater than that of the strengthening magnet, so as to absorb or repel the plate magnet from the fault position and push it back to the normal position.

Images