Heating device

Abstract

The invention provides a heating device. The heating device comprises a sealed gas storage structure; the cover body is connected with the sealed gas storage structure; the heating assembly is used for heating the insulating oil; at least part of the adjusting assembly is movably arranged and connected with the sealed gas storage structure so as to adjust the total resistance value of the heating assembly connected into a circuit or control the on-off state of the circuit where the heating assembly is located; when the sealed gas storage structure shrinks, the sealed gas storage structure drives at least part of the adjusting assembly to move towards the side far away from the sealed gas storage structure, so that the total resistance value of the heating assembly connected into the circuit is reduced or the circuit where the heating assembly is located is controlled to be in a conducting state. The problem that a voltage transformer in the prior art cannot adapt to a low-temperature environment is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage transformers, and more particularly, to a heating device. Background Art

[0002] Currently, in a low-temperature environment, the fluidity of the insulating oil in voltage transformers and capacitors is poor, which will affect the insulation performance of the above products.

[0003] However, the minimum operating temperature of voltage transformers and capacitors in the prior art is -40°C. If the temperature is lower than -40°C, insulating oil with better low-temperature performance needs to be replaced. However, no matter how good the insulating oil is, it can only meet the operating environment of -55°C, resulting in voltage transformers and capacitors being unable to adapt to the low-temperature environment, which not only affects their normal use but also limits the operating temperature. Summary of the Invention

[0004] The main object of the present invention is to provide a heating device to solve the problem that voltage transformers and capacitors in the prior art cannot adapt to the low-temperature environment.

[0005] To achieve the above object, the present invention provides a heating device for heating insulating oil. The heating device includes: a sealed gas storage structure; a cover body connected to the sealed gas storage structure; a heating component for heating the insulating oil; an adjustment component, at least part of which is movably arranged and connected to the sealed gas storage structure to adjust the total resistance value of the heating component connected to the circuit or control the on / off state of the circuit where the heating component is located; wherein, when the sealed gas storage structure contracts, the sealed gas storage structure drives at least part of the adjustment component to move towards the side away from the sealed gas storage structure, so that the total resistance value of the heating component connected to the circuit decreases or controls the circuit where the heating component is located to be in a conducting state.

[0006] Furthermore, the heating component includes: a heating structure; a connector component connected in the circuit where the heating structure is located to control the on / off state of the circuit; wherein, the adjustment component includes an insulating baffle, which is movably arranged, and the insulating baffle has an insulating position where at least part of it is in contact with the connector component to make the circuit in an open state and / or a non-insulating position where it is separated from the connector component to make the circuit in a conducting state.

[0007] Further, the joint assembly includes at least two oppositely arranged joints, and at least one joint is movably arranged; when the at least two joints are in contact, the circuit is in a conducting state, and the heating structure starts to heat the insulating oil; wherein, the adjusting assembly further includes a transmission assembly, the transmission assembly is arranged in the housing, at least part of the sealed gas storage structure is connected to the insulating baffle through the transmission assembly, when the insulating baffle is in the insulating position, the insulating baffle is inserted between the two joints to separate the two joints; when the insulating baffle is in the non-insulating position, the insulating baffle withdraws from between the two joints to make the two joints in contact.

[0008] Further, the transmission assembly includes: a first transmission part, connected to at least part of the sealed gas storage structure; a second transmission part, connected to the insulating baffle; two first transmission rods hinged to each other, the hinged position of the two first transmission rods is located in the middle of each first transmission rod, one end of each first transmission rod close to the sealed gas storage structure is connected to the first transmission part, and one end of each first transmission rod away from the sealed gas storage structure is connected to the insulating baffle; wherein, the hinged position is fixed relative to the housing.

[0009] Further, the two first transmission rods are hinged by a pin shaft, and the heating device further includes: a fixing structure, the first end of the fixing structure is connected to the inner wall of the housing, and the second end of the fixing structure is fixedly connected to the pin shaft.

[0010] Further, the first transmission part includes: two second transmission rods hinged to each other, the hinged position of the two second transmission rods is located at the first end of each second transmission rod, the two second transmission rods are arranged in one-to-one correspondence with the two first transmission rods, and the second end of each second transmission rod is hinged to one end of its corresponding first transmission rod close to the sealed gas storage structure.

[0011] Further, the second transmission part includes: two third transmission rods hinged to each other, the hinged position of the two third transmission rods is located in the middle of each third transmission rod, the two third transmission rods are arranged in one-to-one correspondence with the two first transmission rods, and the first end of each third transmission rod is hinged to one end of its corresponding first transmission rod away from the sealed gas storage structure; two fourth transmission rods hinged to each other, the hinged position of the two fourth transmission rods is located at the first end of each fourth transmission rod, the two fourth transmission rods are arranged in one-to-one correspondence with the two third transmission rods, and the second end of each fourth transmission rod is hinged to the second end of its corresponding third transmission rod; a fifth transmission rod, the first end of the fifth transmission rod is hinged to the first end of each fourth transmission rod, and the second end of the fifth transmission rod is connected to the insulating baffle.

[0012] Further, the heating device further includes: a first elastic structure, the first elastic structure is connected to the second transmission part to apply an elastic force towards the sealed gas storage structure to the second transmission part.

[0013] Further, the heating device further includes: a first connection structure, through which the second transmission part is connected to the insulating baffle; a second connection structure, through which the second transmission part is connected to the first elastic structure.

[0014] Further, there are multiple pairs of joint assemblies, and the multiple pairs of joint assemblies are arranged at intervals along the movement direction of the insulating baffle. Each pair of joint assemblies includes at least two oppositely arranged joints; and / or, the heating structure is arranged on the outer wall of the cover body, and there is one heating structure; or, there are multiple heating structures, and the multiple heating structures are arranged at intervals along the length direction and / or the height direction of the cover body; and / or, at least two joints include a first sub-joint, and the first sub-joint includes: a first conductor, having a guiding inclined surface, and the guiding inclined surface faces the insulating baffle; a second elastic structure, connected to the first conductor for applying an elastic force to the first conductor to move it towards another joint; and / or, at least two joints further include a second sub-joint, and the second sub-joint includes: a second conductor, arranged opposite to the first conductor; a third elastic structure, connected to the second conductor for applying an elastic force to the second conductor to move it towards the first sub-joint.

[0015] Applying the technical solution of the present invention, the heating device is used to heat insulating oil. The heating device includes a sealed gas storage structure, a cover body, a heating assembly, and an adjustment assembly. The heating assembly is used to heat the insulating oil. At least part of the adjustment assembly is movably arranged and connected to the sealed gas storage structure to adjust the total resistance value of the heating assembly connected to the circuit or control the on-off state of the circuit where the heating assembly is located. Among them, when the sealed gas storage structure contracts, the sealed gas storage structure drives at least part of the adjustment assembly to move towards the side away from the sealed gas storage structure, so that the total resistance value of the heating assembly connected to the circuit decreases or controls the circuit where the heating assembly is located to be in a conducting state. In this way, in the initial state, the total resistance value of the heating assembly connected to the circuit remains unchanged or the circuit where the heating assembly is located is in an open state, and the heating assembly is not put into use; if the temperature of the insulating oil is relatively low, based on the principle of thermal expansion and contraction, it will cause the gas stored in the sealed gas storage structure to contract, and the overall sealed gas storage structure contracts, thereby driving at least part of the adjustment assembly to move along the direction towards the sealed gas storage structure, so that the total resistance value of the heating assembly connected to the circuit decreases or controls the circuit where the heating assembly is located to be in a conducting state, then the heating power of the heating assembly increases or the circuit where the heating assembly is located is in a conducting state, and the heating assembly is put into use to heat the insulating oil, thereby ensuring that the mutual inductor can be used normally, solving the problem that voltage mutual inductors and capacitors in the prior art cannot adapt to low-temperature environments, improving the versatility of the mutual inductor, and enabling the mutual inductor to adapt to low-temperature environments. Description of the Drawings

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figure 1 shows a front view of an embodiment of a heating device according to the present invention;

[0018] Figure 2 shows Figure 1 a top view of the heating device in

[0019] Figure 3 shows Figure 1 a bottom view of the heating device in

[0020] Among them, the above-mentioned drawings include the following reference numerals:

[0021] 10, sealed gas storage structure; 20, cover body; 30, transmission assembly; 31, first transmission part; 311, second transmission rod; 32, second transmission part; 321, third transmission rod; 322, fourth transmission rod; 323, fifth transmission rod; 33, first transmission rod; 40, heating assembly; 41, joint assembly; 411, joint; 412, first sub-joint; 413, second sub-joint; 42, heating structure; 50, insulating baffle; 60, fixing structure; 70, first elastic structure; 80, first connection structure; 90, second connection structure. Detailed Embodiments

[0022] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0024] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction; similarly, for the convenience of understanding and description, "left, right" are usually in the left and right shown in the drawings; "inside, outside" refer to the inside and outside relative to the contour of each component itself, but the above orientation terms do not limit the present invention.

[0025] In order to solve the problem that voltage transformers and capacitors in the prior art cannot adapt to low-temperature environments, this application provides a heating device.

[0026] As Figures 1 to 3As shown in the figure, the heating device is used to heat insulating oil. The heating device includes a sealed gas storage structure 10, a cover 20, a heating component 40, and an adjustment component. The cover 20 is connected to the sealed gas storage structure 10, and the heating component 40 is used to heat the insulating oil. At least part of the adjustment component is movably arranged and connected to the sealed gas storage structure 10 to adjust the total resistance value of the heating component 40 connected to the circuit or control the on-off state of the circuit where the heating component 40 is located. Among them, when the sealed gas storage structure 10 contracts, the sealed gas storage structure 10 drives at least part of the adjustment component to move toward the side away from the sealed gas storage structure 10, so that the total resistance value of the heating component 40 connected to the circuit decreases or controls the circuit where the heating component 40 is located to be in a conducting state.

[0027] Applying the technical solution of this embodiment, in the initial state, the circuit where the heating component 40 is located is in an open state, and the heating component 40 is not in use; if the temperature of the insulating oil is relatively low, based on the principle of thermal expansion and contraction, it will cause the gas stored in the sealed gas storage structure 10 to contract, and the overall sealed gas storage structure 10 will contract, thereby driving at least part of the adjustment component to move in the direction toward the sealed gas storage structure 10, so that the circuit where the heating component 40 is located is in a conducting state, then the circuit where the heating component 40 is located is in a closed state, and the heating component 40 is put into use to heat the insulating oil, thereby ensuring that the mutual inductor can be used normally, solving the problem that voltage mutual inductors and capacitors in the prior art cannot adapt to low-temperature environments, improving the versatility of the mutual inductor, so that the mutual inductor can adapt to low-temperature environments.

[0028] In this embodiment, in a low-temperature environment, the heating component 40 is used to heat the insulating oil to ensure that the insulating oil can be used normally and improve the insulation performance of the mutual inductor.

[0029] In this embodiment, the heating device is a mutual inductor heating device.

[0030] It should be noted that the type of the heating device is not limited to this, and it can be used in any closed container that meets the following characteristics:

[0031] 1. Inside a closed space;

[0032] 2. Due to the change of the volume of the medium in the space with external variables (such as temperature change, force change, etc.), it prompts the resistance value of the connected heating resistor to change, so that the medium is heated to a suitable temperature.

[0033] Optionally, the heating device is a capacitor heating device or a transformer heating device.

[0034] In other embodiments not shown in the drawings, at least a part of the adjustment component is movably arranged and connected to the sealed gas storage structure to adjust the total resistance value of the heating component connected to the circuit. Among them, when the sealed gas storage structure contracts, the sealed gas storage structure drives at least a part of the adjustment component to move towards the side away from the sealed gas storage structure, so that the total resistance value of the heating component connected to the circuit decreases. In this way, in the initial state, the total resistance value of the heating component connected to the circuit remains unchanged and the heating component is not put into use; if the temperature of the insulating oil is relatively low, based on the principle of thermal expansion and contraction, the gas stored in the sealed gas storage structure will contract, and the overall sealed gas storage structure will contract, thereby driving at least a part of the adjustment component to move in the direction towards the sealed gas storage structure, so that the total resistance value of the heating component connected to the circuit decreases, and the heating power of the heating component increases, and the heating component is put into use to heat the insulating oil, thereby ensuring that the mutual inductor can be used normally, solving the problem that voltage mutual inductors and capacitors in the prior art cannot adapt to low-temperature environments, improving the versatility of the mutual inductor, and enabling the mutual inductor to adapt to low-temperature environments.

[0035] As Figure 1 shown, the heating component 40 includes a heating structure 42 and a joint component 41. The joint component 41 is connected in the circuit where the heating structure 42 is located to control the on / off state of the circuit. Among them, the adjustment component includes an insulating baffle 50, the insulating baffle 50 is movably arranged, and the insulating baffle 50 has an insulating position in contact with at least a part of the joint component 41 to make the circuit in an open state and / or a non-insulating position separated from the joint component 41 to make the circuit in a conducting state.

[0036] As Figure 1As shown, the joint assembly 41 includes at least two joints 411, and at least one joint 411 is movably arranged; when at least two joints 411 are in contact, the circuit is in a conducting state, and the heating structure 42 is activated to heat the insulating oil. Among them, the adjustment assembly further includes a transmission assembly 30. The transmission assembly 30 is arranged in the housing 20. At least part of the sealed gas storage structure 10 is connected to the insulating baffle 50 through the transmission assembly 30. When the insulating baffle 50 is in the insulating position, the insulating baffle 50 is inserted between the two joints 411 to separate the two joints 411; when the insulating baffle 50 is in the non-insulating position, the insulating baffle 50 withdraws from between the two joints 411 to make the two joints 411 in contact. Specifically, in the initial state, the insulating baffle 50 is in the insulating state. At this time, the circuit where the heating structure 42 is located is in an open circuit state, and the heating structure 42 is not put into use; if the temperature of the insulating oil is relatively low, based on the principle of thermal expansion and contraction, it will cause the gas stored in the sealed gas storage structure 10 to contract, and the whole of the sealed gas storage structure 10 contracts, thereby driving the transmission assembly 30 to move in the direction towards the sealed gas storage structure 10. The transmission assembly 30 drives the insulating baffle 50 to move towards the side away from the sealed gas storage structure 10, so that the insulating baffle 50 moves from the insulating state to the non-insulating state. At this time, the insulating baffle 50 withdraws from between the two joints 411 to make the two joints 411 in contact, then the circuit where the heating structure 42 is located is in a closed circuit state, and the heating structure 42 is put into use to heat the insulating oil, thereby ensuring that the mutual inductor can be used normally, solving the problem that voltage mutual inductors and capacitors in the prior art cannot adapt to low-temperature environments, improving the versatility of the mutual inductor, and enabling the mutual inductor to adapt to low-temperature environments.

[0037] As Figure 1 shown, the transmission assembly 30 includes a first transmission part 31, a second transmission part 32 and two first transmission rods 33 that are hinged to each other. The first transmission part 31 is connected to at least part of the sealed gas storage structure 10, and the second transmission part 32 is connected to the insulating baffle 50. The hinged position of the two first transmission rods 33 is located in the middle of each first transmission rod 33. One end of each first transmission rod 33 close to the sealed gas storage structure 10 is connected to the first transmission part 31, and one end of each first transmission rod 33 far from the sealed gas storage structure 10 is connected to the insulating baffle 50. Among them, the hinged position is fixed relative to the housing 20. In this way, when the whole of the sealed gas storage structure 10 contracts, the above setting ensures that the contraction direction of the sealed gas storage structure 10 connected to the first transmission part 31 and the movement direction of the insulating baffle 50 connected to the second transmission part 32 are opposite, thereby ensuring that the insulating baffle 50 can control the heating state of the heating structure 42 and improving the heating reliability of the heating assembly 40 for the insulating oil. At the same time, the above setting makes the structure of the transmission assembly 30 simpler, easier to process and implement, and reduces the processing cost and processing difficulty of the transmission assembly 30.

[0038] Specifically, the sealed gas storage structure 10 includes a gas storage part and a corrugated pipe that are interconnected. The cover body 20 is connected to the gas storage part and covers the outside of the corrugated pipe. When the whole sealed gas storage structure 10 contracts, the corrugated pipe moves towards the gas storage part, driving the first transmission part 31 and the first transmission rod 33 to move, so that the included angle between the two first transmission rods 33 decreases. Then, the second transmission part 32 connected to the two first transmission rods 33 is pushed to the side away from the sealed gas storage structure 10. Furthermore, the insulating baffle 50 is driven by the second transmission part 32 to move towards the side away from the sealed gas storage structure 10, so that the insulating baffle 50 changes from the insulating state to the non-insulating state, and the heating structure 42 is started.

[0039] As Figure 1 and Figure 3 shown, the two first transmission rods 33 are hinged by a pin shaft, and the heating device further includes a fixing structure 60. Among them, the first end of the fixing structure 60 is connected to the inner wall of the cover body 20, and the second end of the fixing structure 60 is fixedly connected to the pin shaft. In this way, the fixing structure 60 is used to fix the pin shaft to ensure that the pin shaft is fixed relative to the cover body 20, and further ensure that the contraction direction of the sealed gas storage structure 10 connected to the first transmission part 31 and the movement direction of the insulating baffle 50 connected to the second transmission part 32 are set in opposite directions, so as to start the heating structure 42 to heat the insulating oil when the temperature of the insulating oil is lower than the preset temperature value.

[0040] In this embodiment, the fixing structure 60 is rod-shaped and is arranged perpendicular to the first transmission rod 33.

[0041] As Figure 1 shown, the first transmission part 31 includes two second transmission rods 311 that are hinged to each other. Among them, the hinged position of the two second transmission rods 311 is at the first end of each second transmission rod 311. The two second transmission rods 311 are arranged in one-to-one correspondence with the two first transmission rods 33, and the second end of each second transmission rod 311 is hinged to the end of the corresponding first transmission rod 33 close to the sealed gas storage structure 10. In this way, the above setting makes the structure of the first transmission part 31 simpler, easier to process and implement, reducing the processing cost and difficulty of the first transmission part 31. At the same time, the above setting ensures that when the whole sealed gas storage structure 10 contracts, the second transmission part 32 and the insulating baffle 50 can be driven by the first transmission part 31, improving the transmission reliability and stability of the transmission assembly 30.

[0042] As Figure 1As shown in the figure, the second transmission part 32 includes two third transmission rods 321 hinged to each other, two fourth transmission rods 322 hinged to each other, and a fifth transmission rod 323. Among them, the hinged position of the two third transmission rods 321 is located in the middle of each third transmission rod 321. The two third transmission rods 321 and the two first transmission rods 33 are arranged in one-to-one correspondence. The first end of each third transmission rod 321 is hinged to the end of the corresponding first transmission rod 33 away from the sealed gas storage structure 10. The hinged position of the two fourth transmission rods 322 is located at the first end of each fourth transmission rod 322. The two fourth transmission rods 322 and the two third transmission rods 321 are arranged in one-to-one correspondence. The second end of each fourth transmission rod 322 is hinged to the second end of the corresponding third transmission rod 321. The first end of the fifth transmission rod 323 is hinged to the first end of each fourth transmission rod 322, and the second end of the fifth transmission rod 323 is connected to the insulating baffle 50. In this way, the above setting makes the structure of the second transmission part 32 simpler, easier to process and implement, reducing the processing cost and difficulty of the second transmission part 32. At the same time, the above setting ensures that when the whole sealed gas storage structure 10 shrinks, the first transmission part 31 can drive the second transmission part 32 and the insulating baffle 50 to move, improving the transmission reliability and stability of the transmission component 30.

[0043] Specifically, the hinged joints of the two fourth transmission rods 322 and the hinged joints of the two first transmission rods 33 are located in the same plane, and this plane is arranged parallel to the movement direction of the insulating baffle 50. The movement direction of the fifth transmission rod 323 is the same as the movement direction of the insulating baffle 50.

[0044] As Figure 1 and Figure 3 As shown in the figure, the heating device further includes a first elastic structure 70. Among them, the first elastic structure 70 is connected to the second transmission part 32 to apply an elastic force towards the sealed gas storage structure 10 to the second transmission part 32. In this way, during the movement of the insulating baffle 50, on the one hand, the first elastic structure 70 is used to guide and direct the insulating baffle 50 to ensure that the insulating baffle 50 always moves along the preset direction. On the other hand, after the heating structure 42 is started, if the temperature of the insulating oil reaches the preset temperature value, the first elastic structure 70 can apply an elastic force towards the sealed gas storage structure 10 side to the insulating baffle 50, so that the insulating baffle 50 moves from the non-insulating state to the insulating state, and inserts between the two joints 411 to separate them. At this time, the circuit where the heating structure 42 is located is in an open circuit state, and the heating structure 42 stops heating to reduce power consumption and avoid energy waste.

[0045] In this embodiment, the first elastic structure 70 is a spring, and the two ends of the spring are respectively connected to the second transmission part 32 and the inner wall of the housing 20.

[0046] Specifically, the first elastic structure 70 is connected to the fifth transmission rod 323.

[0047] Optionally, there is one first elastic structure 70; or, there are multiple first elastic structures 70, and the multiple first elastic structures 70 are arranged at intervals along the height direction of the cover 20.

[0048] As Figure 3 shown, the heating device further includes a first connection structure 80 and a second connection structure 90. Among them, the second transmission part 32 is connected to the insulating baffle 50 through the first connection structure 80, and the second transmission part 32 is connected to the first elastic structure 70 through the second connection structure 90. In this way, the above settings make the disassembly and assembly of the insulating baffle 50 and the second transmission part 32, and the first elastic structure 70 and the second transmission part 32 easier and simpler, reducing the disassembly and assembly difficulty of the three.

[0049] Specifically, the first connection structure 80 is a first L-shaped plate, one side of the first L-shaped plate is connected to the second transmission part 32, and the other side of the first L-shaped plate is connected to the insulating baffle 50. The second connection structure 90 is a second L-shaped plate, one side of the second L-shaped plate is connected to the second transmission part 32, and the other side of the second L-shaped plate is connected to the first elastic structure 70.

[0050] Optionally, there are multiple pairs of joint assemblies 41, and the multiple pairs of joint assemblies 41 are arranged at intervals along the movement direction of the insulating baffle 50. Each pair of joint assemblies 41 includes at least two oppositely arranged joints 411; and / or, the heating structure 42 is arranged on the outer wall of the cover 20, and there is one heating structure 42; or, there are multiple heating structures 42, and the multiple heating structures 42 are arranged at intervals along the length direction and / or height direction of the cover 20. In this way, the above settings make the number of the joint assemblies 41 and the heating structures 42 more flexible to meet different usage requirements and working conditions, and also improve the processing flexibility of the staff.

[0051] In this embodiment, there are three pairs of joint assemblies 41, and the three pairs of joint assemblies 41 are arranged at intervals along the movement direction of the insulating baffle 50. There are three heating structures 42, and the three heating structures 42 are arranged in one-to-one correspondence with the three pairs of joint assemblies 41. The three heating structures 42 are arranged at intervals along the length direction of the cover 20. In this way, during the movement of the insulating baffle 50, one pair, or two pairs, or three pairs of joint assemblies 41 can be separated at one time, and then the number of the heating structures 42 put into use can be adjusted to adjust the heating power of the heating assembly 40 to achieve rapid heating.

[0052] Optionally, each pair of joint components 41 corresponds to a heating structure 42. When the insulating baffle 50 is away from all the joint components 41 (N joint components 41), all the heating structures 42 heat simultaneously. When the insulating baffle 50 only blocks X (X < N) joint components 41, then (N - X) heating structures 42 are turned on to work, so that the heating component 40 has multiple different heating powers.

[0053] It should be noted that the number of the joint components 41 is not limited to this and can be adjusted according to the working conditions and usage requirements. Optionally, the number of the joint components 41 is two, or four, or five, or six, or more.

[0054] It should be noted that the number of the heating structures 42 is not limited to this and can be adjusted according to the working conditions and usage requirements. Optionally, the number of the heating structures 42 is two, or four, or five, or six, or more.

[0055] As Figure 2 shown, at least two joints 411 include a first sub-joint 412 and / or a second sub-joint 413. The first sub-joint 412 includes a first conductor and a second elastic structure. The first conductor has a guiding inclined surface facing the insulating baffle 50. The second elastic structure is connected to the first conductor to apply an elastic force to the first conductor to move towards the second sub-joint 413. The second sub-joint 413 includes a second conductor and a third elastic structure. The second conductor is arranged opposite to the first conductor. The third elastic structure is connected to the second conductor to apply an elastic force to the second conductor to move towards the first sub-joint 412. In this way, on the one hand, the above settings make the structure of the joint component 41 simpler, easier to process and implement, reducing the processing cost and difficulty of the joint component 41. On the other hand, both the first sub-joint 412 and the second sub-joint 413 can move to ensure that they can contact or separate from each other to adjust the heating state of the heating structure 42.

[0056] Specifically, the second elastic structure can not only apply an elastic force to the first sub-joint 412 to restore its original state, but also guide the movement of the first sub-joint 412 to prevent the first sub-joint 412 from shifting. The third elastic structure can not only apply an elastic force to the second sub-joint 413 to restore its original state, but also guide the movement of the second sub-joint 413 to prevent the second sub-joint 413 from shifting.

[0057] Optionally, the second elastic structure is a spring.

[0058] Optionally, the third elastic structure is a spring.

[0059] Optionally, the heating structure 42 is in the shape of a sheet or a plate; alternatively, the heating structure 42 is a ceramic sheet. In this way, the above arrangement makes the structure of the heating structure 42 simpler, easier to process and implement, and reduces the processing cost and difficulty of the heating structure 42.

[0060] In this embodiment, the heating structure 42 is a ceramic sheet, and the ceramic sheet is bonded to the outer wall of the cover 20.

[0061] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0062] The heating device is used to heat the insulating oil. The heating device includes a sealed gas storage structure, a cover, a heating component, and an adjustment component. The heating component is used to heat the insulating oil. At least part of the adjustment component is movably arranged and connected to the sealed gas storage structure to adjust the total resistance value of the heating component connected to the circuit or control the on / off state of the circuit where the heating component is located. Among them, when the sealed gas storage structure contracts, the sealed gas storage structure drives at least part of the adjustment component to move toward the side away from the sealed gas storage structure, so that the total resistance value of the heating component connected to the circuit decreases or controls the circuit where the heating component is located to be in a conducting state. In this way, in the initial state, the total resistance value of the heating component connected to the circuit remains unchanged or the circuit where the heating component is located is in an open state, and the heating component is not put into use; if the temperature of the insulating oil is relatively low, based on the principle of thermal expansion and contraction, it will cause the gas stored in the sealed gas storage structure to contract, and the overall sealed gas storage structure will contract, thereby driving at least part of the adjustment component to move in the direction toward the sealed gas storage structure, so that the total resistance value of the heating component connected to the circuit decreases or controls the circuit where the heating component is located to be in a conducting state, then the heating power of the heating component increases or the circuit where the heating component is located is in a path state, and the heating component is put into use to heat the insulating oil, thereby ensuring that the mutual inductor can be used normally, solving the problem that the voltage mutual inductor and capacitor in the prior art cannot adapt to low temperature environments, improving the versatility of the mutual inductor, and enabling the mutual inductor to adapt to low temperature environments.

[0063] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here.

[0066] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heating device for heating insulating oil, characterized in that, the heating device comprises: a sealed gas storage structure (10); a cover body (20) connected to the sealed gas storage structure (10); a heating component (40) for heating the insulating oil; an adjustment component, at least part of which is movably arranged and connected to the sealed gas storage structure (10) to adjust the total resistance value of the circuit in which the heating component (40) is connected or control the on / off state of the circuit in which the heating component (40) is located; wherein, when the sealed gas storage structure (10) contracts, the sealed gas storage structure (10) drives at least part of the adjustment component to move towards the side away from the sealed gas storage structure (10), so that the total resistance value of the circuit in which the heating component (40) is connected decreases or the circuit in which the heating component (40) is located is in a conducting state.

2. The heating device according to claim 1, characterized in that, the heating component (40) comprises: a heating structure (42); a connector component (41) connected in the circuit where the heating structure (42) is located to control the on / off state of the circuit; wherein, the adjustment component comprises an insulating baffle (50), the insulating baffle (50) is movably arranged, and the insulating baffle (50) has an insulating position in which at least part of the insulating baffle is in contact with the connector component (41) to make the circuit in an open state and / or a non-insulating position in which the insulating baffle (50) is separated from the connector component (41) to make the circuit in a conducting state.

3. The heating device according to claim 2, characterized in that, the connector component (41) comprises at least two oppositely arranged connectors (411), at least one of the connectors (411) is movably arranged; when at least two of the connectors (411) are in contact, the circuit is in a conducting state, and the heating structure (42) starts to heat the insulating oil; wherein, the adjustment component further comprises a transmission component (30), the transmission component (30) is arranged in the cover body (20), at least part of the sealed gas storage structure (10) is connected to the insulating baffle (50) through the transmission component (30), when the insulating baffle (50) is in the insulating position, the insulating baffle (50) is inserted between the two connectors (411) to separate the two connectors (411); when the insulating baffle (50) is in the non-insulating position, the insulating baffle (50) withdraws from between the two connectors (411) to make the two connectors (411) in contact.

4. The heating device according to claim 3, characterized in that, the transmission component (30) comprises: a first transmission part (31) connected to at least part of the sealed gas storage structure (10); a second transmission part (32) connected to the insulating baffle (50); Two first transmission rods (33) that are hinged to each other, the hinged position of the two first transmission rods (33) is located in the middle of each first transmission rod (33), and one end of each first transmission rod (33) close to the sealed gas storage structure (10) is connected to the first transmission part (31), and one end of each first transmission rod (33) far from the sealed gas storage structure (10) is connected to the insulating baffle (50); Wherein, the hinged position is fixed relative to the cover body (20).

5. The heating device according to claim 4, Characterized in that, The two first transmission rods (33) are hinged by a pin shaft, and the heating device further includes: A fixing structure (60), a first end of the fixing structure (60) is connected to the inner wall of the cover body (20), and a second end of the fixing structure (60) is fixedly connected to the pin shaft.

6. The heating device according to claim 4, Characterized in that, The first transmission part (31) includes: Two second transmission rods (311) that are hinged to each other, the hinged position of the two second transmission rods (311) is located at the first end of each second transmission rod (311), the two second transmission rods (311) are arranged in one-to-one correspondence with the two first transmission rods (33), and the second end of each second transmission rod (311) is hinged to one end of the corresponding first transmission rod (33) close to the sealed gas storage structure (10).

7. The heating device according to claim 4, Characterized in that, The second transmission part (32) includes: Two third transmission rods (321) that are hinged to each other, the hinged position of the two third transmission rods (321) is located in the middle of each third transmission rod (321), the two third transmission rods (321) are arranged in one-to-one correspondence with the two first transmission rods (33), and the first end of each third transmission rod (321) is hinged to one end of the corresponding first transmission rod (33) far from the sealed gas storage structure (10); Two fourth transmission rods (322) that are hinged to each other, the hinged position of the two fourth transmission rods (322) is located at the first end of each fourth transmission rod (322), the two fourth transmission rods (322) are arranged in one-to-one correspondence with the two third transmission rods (321), and the second end of each fourth transmission rod (322) is hinged to the second end of the corresponding third transmission rod (321); A fifth transmission rod (323), a first end of the fifth transmission rod (323) is hinged to the first end of each fourth transmission rod (322), and a second end of the fifth transmission rod (323) is connected to the insulating baffle (50).

8. The heating device according to claim 4, Characterized in that, The heating device further includes: A first elastic structure (70), the first elastic structure (70) is connected to the second transmission part (32) to apply an elastic force towards the sealed gas storage structure (10) to the second transmission part (32).

9. The heating device according to claim 8, Characterized in that, The heating device further includes: A first connection structure (80), through which the second transmission part (32) is connected to the insulating baffle (50); A second connection structure (90), through which the second transmission part (32) is connected to the first elastic structure (70).

10. The heating device according to claim 3, characterized in that There are multiple pairs of the joint assemblies (41), and the multiple pairs of joint assemblies (41) are arranged at intervals along the movement direction of the insulating baffle (50), and each pair of joint assemblies (41) includes at least two oppositely arranged joints (411); and / or, The heating structure (42) is arranged on the outer wall of the housing (20), and there is one heating structure (42); or there are multiple heating structures (42), and the multiple heating structures (42) are arranged at intervals along the length direction and / or the height direction of the housing (20); and / or, At least two of the joints (411) include a first sub-joint (412), and the first sub-joint (412) includes: A first conductor having a guiding inclined surface, and the guiding inclined surface faces the insulating baffle (50); A second elastic structure, which is connected to the first conductor to apply an elastic force to the first conductor to move towards another joint (411); and / or, At least two of the joints (411) further include a second sub-joint (413), and the second sub-joint (413) includes: A second conductor, which is arranged opposite to the first conductor; A third elastic structure, which is connected to the second conductor to apply an elastic force to the second conductor to move towards the first sub-joint (412).

Images