35kV oil immersed transformer

Abstract

The present invention relates to the technical field of oil-immersed transformers, and proposes a 35kV oil-immersed transformer, including an iron core, the iron core having an upper horizontal part, a lower horizontal part and three vertical parts, the two ends of the vertical part are respectively connected to the upper horizontal part and the lower horizontal part, there are three vertical parts, and they are arranged in sequence along the horizontal direction; the iron core is arranged on a frame; the winding assembly is sleeved outside the iron core, the winding assembly has a through hole, and the vertical part penetrates the through hole; the lower support ring is arranged at the lower part of the frame, the vertical part penetrates the lower support ring, the lower support ring is arranged below the winding assembly, the lower support ring has a lower conical support surface, the lower conical support surface is an outer conical surface, and has a lower inclined guide groove, the length direction of the lower inclined guide groove is along the busbar of the lower conical support surface, and the lower inclined guide groove is arranged in a plurality of circles; the lower support member is slidably arranged in the lower inclined guide groove, and supports the lower end of the winding assembly. Through the above technical scheme, the technical problem that the oil-immersed transformer has an increased vibration amount and a safety hazard after long-term use in the related technology is solved.

Description

Technical Field

[0001] The invention relates to the technical field of oil-immersed transformers, and in particular to a 35kV oil-immersed transformer. Background Art

[0002] 35kV oil-immersed transformers work mainly based on the principle of electromagnetic induction, and are composed of iron core and coil (winding) as core components. When AC current flows into the primary coil, an alternating magnetic field is generated, which is conducted in the iron core, causing the secondary coil to generate an induced electromotive force due to electromagnetic induction, thereby realizing voltage conversion and electrical energy transmission.

[0003] In the production process of 35kV oil-immersed transformers, there are several common support methods for the installation of coils on the core: 1. Insulation pad support, usually using high-strength, high-insulation materials, such as epoxy glass cloth boards. These materials have good electrical insulation and mechanical strength, can bear the weight of the coil and prevent short circuits between the coil and the core; 2. The support bar is generally made of insulating materials, such as phenolic paper tubes, and its shape is mostly slender cylinders. This shape can effectively fill the space between the coil and the core and provide radial support for the coil; 3. Clamp fixed support, the clamp is mainly made of metal, such as steel plates, etc. It fixes the coil on the core through a clamping device, applies pressure to the coil from the outside, and ensures that the position of the coil in the core is stable. The clamp generally includes an upper clamp and a lower clamp, which are combined together by screws or other connectors to hold the coil tightly.

[0004] Regardless of the fixing method and combined fixing method, although the winding can be fixed, it will loosen to a certain extent due to long-term use. In terms of mechanics, during the long-term operation of the transformer, due to the influence of vibration, thermal expansion and contraction, the clamps, bolts and other components used to fix the winding may become loose; for example, when the transformer is running, it will generate vibrations of a certain frequency, and these vibrations will gradually displace the originally tightened bolts, resulting in a decrease in their tightening force.

[0005] In terms of electromagnetics, when the transformer is in operation, the current passing through the winding will generate a magnetic field, and the different windings and the windings and the core will interact to generate electromagnetic forces. Especially in the event of a short circuit or a sudden load change, strong transient electromagnetic forces will be generated. The magnitude and direction of these electromagnetic forces change with the current. When the electromagnetic force exceeds the mechanical strength of the fixed winding, the winding will be displaced and shake. This will increase the vibration of the winding during operation, which will cause certain safety hazards over time.

[0006] In terms of the operating environment, if the transformer is installed in an environment with large vibrations, such as near large machinery and equipment, or traffic arteries, the continuous vibrations from the outside will be transmitted to the inside of the transformer, which will interfere with the normal position of the windings. For example, in a factory workshop, if the transformer is installed near equipment such as a punch press, the strong vibrations generated by the punch press during operation may be transmitted to the transformer, causing the windings to gradually loosen and shake.

[0007] Therefore, it is necessary to improve the structure of 35kV oil-immersed transformer so that it can better cope with the vibrations caused by mechanical, electromagnetic and operating environment. Summary of the invention

[0008] The present invention provides a 35kV oil-immersed transformer, which solves the technical problem in the related art that the oil-immersed transformer has increased vibration after long-term use, which poses a safety hazard.

[0009] The technical solution of the present invention is as follows:

[0010] 35kV oil immersed transformer, including:

[0011] An iron core, the iron core comprising an upper transverse portion, a lower transverse portion and three vertical portions, two ends of the vertical portion are respectively connected to the upper transverse portion and the lower transverse portion, and the vertical portions are three and arranged in sequence in the transverse direction;

[0012] A frame, wherein the iron core is arranged on the frame;

[0013] A winding assembly, wherein the winding assembly is sleeved outside the iron core, the winding assembly has a through hole, and the vertical portion passes through the through hole;

[0014] A lower support ring, wherein the lower support ring is arranged at the lower part of the frame, the vertical part passes through the lower support ring, the lower support ring is arranged below the winding assembly, the lower support ring has a first conical support surface, the first conical support surface is an outer conical surface, and has a lower inclined guide groove, the length direction of the lower inclined guide groove is along the generatrix of the first conical support surface, and the lower inclined guide groove is arranged in a plurality of circles;

[0015] A lower support member is slidably disposed in the lower inclined guide groove and supports the lower end of the winding assembly.

[0016] As a further technical solution, it also includes:

[0017] An upper support ring, wherein the upper support ring is arranged at the upper part of the frame, the vertical part passes through the upper support ring, the upper support ring is arranged above the winding assembly, the upper support ring has a second conical support surface, the second conical support surface is an inner conical surface, and has an upper inclined guide groove, the length direction of the upper inclined guide groove is along the generatrix of the second conical support surface, and the upper inclined guide groove is arranged in a plurality of circles;

[0018] An upper support member is slidably disposed in the upper inclined guide groove and abuts against the upper end of the winding assembly.

[0019] As a further technical solution, the frame includes:

[0020] An upper frame and a lower frame, each of the upper frame and the lower frame has a receiving groove, and the upper cross section and the lower cross section are arranged in the receiving groove;

[0021] A connecting screw rod, two ends of which are respectively connected to the upper frame body and the lower frame body.

[0022] As a further technical solution, there is a spacing space between the inner wall of the through hole and the vertical portion, and further comprising:

[0023] A connecting rod, two ends of which are respectively hinged to the lower support member and the upper support member, and the connecting rod passes through the interval space.

[0024] As a further technical solution, a scissor-type support member is also included, which passes through the spacing space and supports the winding assembly and the vertical portion.

[0025] As a further technical solution, the scissor-type support member is composed of several support rods hinged to each other, with the upper end having a first connecting end and a second connecting end, and the lower end having a third connecting end and a fourth connecting end, the first connecting end being hinged to the upper support ring, and the third connecting end being hinged to the lower support ring.

[0026] As a further technical solution, the upper support member has an upper inclined push surface, and the lower support member has a lower inclined push surface, the upper inclined push surface abuts against the second connecting end, and the lower inclined push surface abuts against the fourth connecting end.

[0027] As a further technical solution, the inclination direction of the upper inclined push surface and the lower inclined push surface is gradually decreasing from close to the scissors-type support member to away from the scissors-type support member, and is used to push the second connecting end and the fourth connecting end after the upper inclined push surface and the lower inclined push surface move downward, so that the scissors-type support member becomes wider.

[0028] As a further technical solution, the scissor-type support member further includes:

[0029] Side support parts are arranged on both sides of the scissor-type support member and are used to support the winding assembly and the vertical part.

[0030] As a further technical solution, the bottoms of the lower support ring and the upper support ring are both square.

[0031] The working principle and beneficial effects of the present invention are:

[0032] In the present invention, the stability of the transformer under complex working conditions is significantly improved, the service life of the transformer is extended, and the maintenance cost is reduced. When the transformer is running, when the winding assembly vibrates, the lower support slides in the lower inclined guide groove, and absorbs and disperses the vibration energy through the changes in friction and support force during the sliding process, thereby reducing the vibration amplitude of the winding assembly and maintaining its position stable. Through this innovative structural design, the problem of winding loosening caused by vibration during the operation of the 35kV oil-immersed transformer is effectively solved, and the performance and safety of the transformer are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0034] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0036] Figure 3 for Figure 2 AA section view of the three-dimensional structure;

[0037] Figure 4 for Figure 3 Middle B is a schematic diagram of a partially enlarged structure;

[0038] Figure 5 It is a schematic diagram of the structure of the scissor-type support member in the present invention;

[0039] In the figure: iron core-1, upper horizontal part-101, lower horizontal part-102, vertical part-103, frame-2, upper frame-201, lower frame-202, accommodating groove-203, connecting screw-204, winding assembly-3, through hole-301, spacing space-302, lower support ring-4, first conical support surface-401, lower inclined guide groove-402, lower support member-5, lower inclined push surface-501, upper support ring-6, second conical support surface-601, upper inclined guide groove-602, upper support member-7, upper inclined push surface-701, connecting rod-8, scissor-type support member-9, first connecting end-901, second connecting end-902, third connecting end-903, fourth connecting end-904, side support part-905. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0041] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0042] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] Example 1

[0045] Reference Figure 1~Figure 4The present embodiment proposes a 35 kV oil-immersed transformer, including an iron core 1, the iron core 1 having an upper transverse portion 101, a lower transverse portion 102 and three vertical portions 103, the two ends of the vertical portion 103 are respectively connected to the upper transverse portion 101 and the lower transverse portion 102, the vertical portions 103 are three, and are arranged in sequence along the transverse direction; the iron core 1 is arranged on a frame 2; a winding assembly 3 is sleeved outside the iron core 1, the winding assembly 3 has a through hole 301, and the vertical portion 103 passes through the through hole 301; a lower support ring 4 is arranged on the frame 2, the vertical portion 103 penetrates the lower support ring 4, the lower support ring 4 is arranged below the winding assembly 3, the lower support ring 4 has a first conical support surface 401, the first conical support surface 401 is an outer conical surface, and has a lower inclined guide groove 402, the length direction of the lower inclined guide groove 402 is along the generatrix of the first conical support surface 401, and the lower inclined guide groove 402 is arranged in a plurality of circles; the lower support member 5 is slidably arranged in the lower inclined guide groove 402, and supports the lower end of the winding assembly 3.

[0046] In this 35kV oil-immersed transformer: the core 1 is composed of an upper transverse portion 101, a lower transverse portion 102 and three vertical portions 103 arranged in sequence along the transverse direction. The core 1 is arranged on a frame 2, the winding assembly 3 is sleeved outside the core 1, and the vertical portion 103 passes through the through hole 301 of the winding assembly 3.

[0047] The lower support ring 4 is located at the lower part of the frame 2, and the vertical part 103 also passes through the lower support ring 4, which is located below the winding assembly 3. The first conical support surface 401 of the lower support ring 4 is an outer conical surface, having a plurality of circumferentially arranged lower inclined guide grooves 402, and the lower support member 5 can slide in these lower inclined guide grooves 402 and support the lower end of the winding assembly 3.

[0048] The design principle is that when the winding assembly 3 is vibrated, the lower support member 5 can slide in the lower inclined guide groove 402 , thereby playing a role of buffering and adjusting support, and reducing the vibration amplitude of the winding assembly 3 .

[0049] In actual production, for example, firstly, the various parts of the iron core 1 are manufactured, the lower horizontal part 102 and the three horizontal edges are integrated as a whole, and assembled on the frame 2. Then the winding assembly 3 is installed so that it is sleeved outside the iron core 1, and it is ensured that the vertical part 103 accurately passes through the through hole 301. Then the lower support ring 4 is installed so that its position is accurate and the vertical part 103 passes smoothly. Finally, the lower support member 5 is installed in the lower inclined guide groove 402, and it is ensured that it can slide smoothly and stably support the winding assembly 3.

[0050] The advantages of this design are: first, through the cooperation of the lower support ring 4 and the lower support member 5, the vibration of the winding assembly 3 in all directions can be effectively dealt with, the stability and reliability of the transformer can be improved, and the lower support member 5 can be pressed tighter and tighter in the inclined lower inclined guide groove 402 under the gravity of the winding assembly 3, so as to achieve a self-locking effect. Second, the structure is simple, easy to manufacture and install, and convenient for later maintenance and repair.

[0051] For example, during the long-term operation of the transformer, even if it is affected by mechanical vibration, electromagnetic force changes or harsh operating environment, the lower support ring 4 and the lower support member 5 can work together to reduce the vibration of the winding assembly 3 and reduce looseness and safety hazards caused by vibration.

[0052] In terms of technical effects, the stability of the transformer under complex working conditions is significantly improved, the service life of the transformer is extended, and the maintenance cost is reduced. Overall working principle: When the transformer is running, when the winding assembly 3 vibrates, the lower support member 5 slides in the lower inclined guide groove 402, and absorbs and disperses the vibration energy through the changes in friction and support force during the sliding process, thereby reducing the vibration amplitude of the winding assembly 3 and maintaining its position stable. Overall technical effect: Through this innovative structural design, the problem of winding loosening caused by vibration during the operation of the 35kV oil-immersed transformer is effectively solved, and the performance and safety of the transformer are improved.

[0053] Furthermore, it also includes an upper support ring 6, which is arranged on the upper part of the frame 2, and the vertical part 103 passes through the upper support ring 6. The upper support ring 6 is arranged above the winding assembly 3, and the upper support ring 6 has a second conical support surface 601, and the second conical support surface 601 is an inner conical surface, and has an upper inclined guide groove 602. The length direction of the upper inclined guide groove 602 is along the generatrix of the second conical support surface 601, and the upper inclined guide groove 602 is arranged in a plurality of circles; the upper support member 7 is slidably arranged in the upper inclined guide groove 602, and abuts against the upper end of the winding assembly 3.

[0054] In the present 35kV oil-immersed transformer: the upper support ring 6 is arranged on the upper part of the frame 2, and the vertical part 103 passes through the upper support ring 6 and is located above the winding assembly 3. The upper support ring 6 has a second conical support surface 601, which is an inner conical surface, and is provided with a plurality of circumferentially arranged upper inclined guide grooves 602, and the length direction of the upper inclined guide grooves 602 is along the generatrix of the second conical support surface 601. The upper support member 7 is slidably arranged in the upper inclined guide groove 602 and abuts against the upper end of the winding assembly 3.

[0055] The design principle is to support and cushion the winding assembly 3 from both ends by cooperating with the upper support ring 6 and the upper support member 7 with the lower support ring 4 and the lower support member 5, so as to further enhance the stability of the winding assembly 3 and reduce its vibration under the influence of various factors.

[0056] In the actual manufacturing process, for example, after the installation of each component, the upper support ring 6 is installed on the upper part of the frame 2 to ensure that the vertical part 103 passes smoothly. Then the upper support member 7 is installed in the upper inclined guide groove 602 so that it can slide flexibly and abut against the upper end of the winding assembly 3.

[0057] The advantages of this design are: first, the support and buffer structures at the upper and lower ends provide more comprehensive protection for the winding assembly 3, and the vibration can be effectively suppressed no matter which direction it comes from. Second, the reliability of the transformer under complex working conditions is further improved, and the failure and damage caused by vibration are reduced.

[0058] For example, during the operation of the transformer, when encountering a sudden short circuit fault or strong external vibration, the synergistic effect of the upper and lower support rings and the support members can quickly disperse and absorb the vibration energy, maintain the stability of the winding assembly 3, and avoid winding loosening and damage.

[0059] The lower support member 5 is slidably arranged in the lower inclined guide groove 402. Based on the inclination direction of the lower inclined guide groove 402, the gravity of the winding assembly 3 will press the lower support member 5 to slide outward, thereby giving the winding assembly 3 a force outward along the diameter; the upper support member 7 slides in the upper inclined guide groove 602. Based on the inclination direction of the upper inclined guide groove 602, the gravity of the winding assembly 3 will slide the upper support member 7 inward, thereby giving the winding assembly 3 a force inward along the diameter. The two opposite forces will make the winding assembly 3 more stably fixed and restricted, and it can also be well fixed and restricted after long-term use, ensuring the stability of the structure.

[0060] In terms of technical effects, the ability of the transformer to resist vibration is significantly improved, the service life of the transformer is effectively extended, and the maintenance cost is reduced. Overall working principle: When the transformer is running, when the winding assembly 3 is affected by vibration, the upper support member 7 slides in the upper inclined guide groove 602 and works together with the lower support member 5 to buffer and offset the vibration from both ends, so that the winding assembly 3 always maintains a stable working state. Overall technical effect: By adding the upper support ring 6 and the upper support member 7, the structure of the 35kV oil-immersed transformer is further improved, and its stability and safety under various complex working conditions are improved.

[0061] Furthermore, the frame 2 includes an upper frame 201 and a lower frame 202, both of which have a receiving groove 203, and the upper cross portion 101 and the lower cross portion 102 are arranged in the receiving groove 203; the two ends of the connecting screw 204 are respectively connected to the upper frame 201 and the lower frame 202.

[0062] In the present 35kV oil-immersed transformer: the frame 2 is composed of an upper frame 201, a lower frame 202 and a connecting screw 204. The upper frame 201 and the lower frame 202 are both provided with a receiving groove 203, the upper cross section 101 and the lower cross section 102 of the core 1 are arranged in the corresponding receiving groove 203, and the two ends of the connecting screw 204 are respectively connected to the upper frame 201 and the lower frame 202.

[0063] The design principle is to position and fix the upper and lower transverse parts of the core 1 through the accommodating groove 203, and the connecting screw 204 connects the upper frame 201 and the lower frame 202 into a whole, providing stable support for the core 1 and the winding assembly 3.

[0064] In the actual assembly process, for example, the upper cross portion 101 of the core 1 is first placed in the receiving groove 203 of the upper frame 201, and the lower cross portion 102 is placed in the receiving groove 203 of the lower frame 202, and then the connecting screw 204 is passed through the corresponding holes on the upper frame 201 and the lower frame 202, and the nuts are tightened to fix them.

[0065] The advantages of this design are: first, the accommodating groove 203 can accurately fix the position of the iron core 1 to prevent it from shifting during operation; second, the connecting screw 204 makes the structure of the frame 2 more stable and can withstand various forces generated during the operation of the transformer.

[0066] For example, during the long-term operation of the transformer, even if it is subjected to external vibration or internal electromagnetic force, the iron core 1 can maintain a good working condition under the stable support of the frame 2.

[0067] In terms of technical effects, the fixing effect of the frame 2 on the core 1 is improved, the overall structural stability of the transformer is enhanced, and the risk of failure caused by the displacement of the core 1 is reduced. Overall working principle: When the transformer is running, the frame 2 provides a stable support for the core 1 through the synergistic effect of the accommodating groove 203 and the connecting screw 204, ensuring that the core 1 and the winding assembly 3 can work normally without being affected by external interference and internal forces. Overall technical effect: Through the structural design of the frame 2, the performance of the 35kV oil-immersed transformer is further optimized, and its reliability and service life are improved.

[0068] Example 2

[0069] Reference Figure 3~Figure 4 Further, based on Example 1, there is a spacing space 302 between the inner wall of the through hole 301 and the vertical portion 103, and also includes a connecting rod 8, the two ends of the connecting rod 8 are respectively hinged to the lower support member 5 and the upper support member 7, and the connecting rod 8 runs through the spacing space 302.

[0070] In the 35kV oil-immersed transformer, there is a spacing space 302 between the inner wall of the through hole 301 of the winding assembly 3 and the vertical portion 103 , and a connecting rod 8 is provided. The two ends of the connecting rod 8 are respectively hinged to the lower support member 5 and the upper support member 7 , and the connecting rod 8 passes through the spacing space 302 .

[0071] The design principle is to connect the upper support member 7 and the lower support member 5 through the connecting rod 8 to form a coordinated whole, thereby enhancing the support and buffering effect on the winding assembly 3. In actual assembly, for example, after the upper support member 7 and the lower support member 5 are installed, the two ends of the connecting rod 8 are respectively hinged to them and passed through the spacing space 302.

[0072] The advantages of this design are: first, the connection of the connecting rod 8 makes the movement of the upper support member 7 and the lower support member 5 more coordinated and consistent, thereby improving the stability of the support for the winding assembly 3. Second, during the operation of the transformer, when the winding assembly 3 is subjected to vibrations in different directions, the connecting rod 8 can quickly transmit force and movement, so that the upper support member 7 and the lower support member 5 share the vibration energy.

[0073] For example, in the case of sudden strong vibration, the connecting rod 8 can ensure that the upper support member 7 and the lower support member 5 move synchronously, effectively avoiding excessive displacement and vibration of the winding assembly 3.

[0074] In terms of technical effects, the transformer's resistance to vibration is further improved, and the possibility of winding loosening and damage caused by vibration is reduced. Overall working principle: When the winding assembly 3 vibrates, the upper support 7 and the lower support 5 slide in the corresponding inclined guide grooves, and the connecting rod 8 flexes and stretches with their movement, thereby playing a role in transmitting force and stabilizing support in the spacing space 302, ensuring the stable operation of the winding assembly 3. Overall technical effect: Through the setting of the connecting rod 8, the collaborative working performance of the upper support 7 and the lower support 5 is optimized, and the reliability and stability of the 35kV oil-immersed transformer under complex working conditions are enhanced.

[0075] Example 3

[0076] Reference Figure 5 Further, based on Example 1, it also includes a scissor-type support member 9, which passes through the spacing space 302 and supports the winding assembly 3 and the vertical portion 103.

[0077] In the present 35 kV oil-immersed transformer, in addition to the above structure, a scissor-type support member 9 is additionally provided. The scissor-type support member 9 passes through the spacing space 302 and supports the winding assembly 3 and the vertical portion 103 .

[0078] The design principle is to utilize the scalability and stability of the scissor-type support member 9 to further enhance the support and fixation between the winding assembly 3 and the vertical portion 103 of the core 1, thereby reducing the possibility of vibration and displacement.

[0079] During actual installation, for example, the scissor-type support member 9 is inserted into the spacing space 302, and its length and angle are adjusted so that it can tightly support the winding assembly 3 and the vertical portion 103. In addition, the scissor-type support member 9, like the connecting rod 8, needs to be made of a non-metallic and non-conductive material with a certain supporting strength, such as wood or ceramic.

[0080] The advantages of this design are: first, the scissor-type support member 9 can provide additional support force to enhance the overall stability of the structure. Second, its adjustability can adapt to different installation and operation conditions, ensuring that effective support can be provided in various situations.

[0081] For example, when the transformer is subjected to a large external impact or internal electromagnetic force changes, the scissor-type support member 9 can respond quickly, share the pressure, and protect the relative position stability of the winding assembly 3 and the core 1.

[0082] In terms of technical effects, the ability of the transformer to resist emergencies and various adverse factors in long-term operation is significantly improved, and the probability of failure is reduced. Overall working principle: During the operation of the transformer, once the winding assembly 3 has a tendency to vibrate or displace, the scissor-type support 9 can quickly play a role and limit the relative movement of the winding assembly 3 and the vertical part 103 through its own support structure, thereby ensuring the normal operation of the transformer. Overall technical effect: By adding the scissor-type support 9, the structure of the 35kV oil-immersed transformer is further improved, making it have better stability and reliability in a complex working environment.

[0083] Furthermore, the scissor-type support member 9 is composed of several support rods hinged to each other, with the upper end having a first connection end 901 and a second connection end 902, and the lower end having a third connection end 903 and a fourth connection end 904. The first connection end 901 is hinged to the upper support ring 6, and the third connection end 903 is hinged to the lower support ring 4.

[0084] In the present 35kV oil-immersed transformer: the scissor-type support member 9 is composed of a plurality of support rods hinged to each other, and has a first connection end 901 and a second connection end 902 at the upper end, and a third connection end 903 and a fourth connection end 904 at the lower end. The first connection end 901 is hinged to the upper support ring 6, and the third connection end 903 is hinged to the lower support ring 4.

[0085] The design principle is that the scissor-type support member 9 can flexibly adapt to the relative displacement and vibration between the winding assembly 3 and the iron core 1 through this hinged connection mode, and provide effective support and buffering.

[0086] In the actual assembly process, for example, the first connection end 901 of the scissor-type support member 9 is connected to the corresponding hinge point on the upper support ring 6 , and the third connection end 903 is connected to the hinge point on the lower support ring 4 .

[0087] The advantages of this design are: first, the hinged connection mode enables the scissor-type support member 9 to rotate flexibly in different directions, and better cope with complex vibration conditions; second, the connection with the upper and lower support rings enhances the integrity and stability of the entire support structure.

[0088] For example, during the operation of the transformer, when the winding assembly 3 vibrates up and down or left and right, the scissor-type support 9 can absorb and disperse the vibration energy through the relative rotation and extension of each support rod, thereby effectively limiting the excessive vibration of the winding assembly 3.

[0089] In terms of technical effects, the transformer's ability to suppress vibration is further improved, and the connection stability between the winding assembly 3 and the core 1 is enhanced. Overall working principle: When the transformer is working, the vibration of the winding assembly 3 will cause the relative displacement of the upper and lower support rings. The scissor-type support member 9 cooperates with the upper and lower support members through the rotation of each hinge point and the extension and contraction of the support rod to convert the vibration energy into heat energy and other forms of consumption, thereby ensuring the relative position stability of the winding assembly 3 and the core 1 and ensuring the normal operation of the transformer. Overall technical effect: Through this unique design and connection method of the scissor-type support member 9, the working reliability and stability of the 35kV oil-immersed transformer in a vibration environment are significantly improved.

[0090] Furthermore, the upper support member 7 has an upper inclined push surface 701 , and the lower support member 5 has a lower inclined push surface 501 . The upper inclined push surface 701 abuts against the second connection end 902 , and the lower inclined push surface 501 abuts against the fourth connection end 904 .

[0091] In the present 35kV oil-immersed transformer: the upper support member 7 has an upper inclined push surface 701 , and the lower support member 5 has a lower inclined push surface 501 . The upper inclined push surface 701 abuts against the second connection end 902 of the scissor-type support member 9 , and the lower inclined push surface 501 abuts against the fourth connection end 904 .

[0092] The design principle is to achieve force transmission and synergy through the abutment between the upper inclined push surface 701 and the lower inclined push surface 501 and the corresponding connecting ends of the scissor-type support member 9, thereby further enhancing the support and stabilization effect on the winding assembly 3.

[0093] In actual operation, for example, when the winding assembly 3 is moved downward, the upper support member 7 and the lower support member 5 move downward, the upper inclined push surface 701 of the upper support member 7 pushes the second connection end 902, and the lower inclined push surface 501 of the lower support member 5 pushes the fourth connection end 904, so that the scissor-type support member 9 expands, thereby providing a reverse supporting force, and realizing corresponding support and buffering.

[0094] The advantages of this design are: first, it can more effectively convert the movement of the upper support member 7 and the lower support member 5 into the drive of the scissor support member 9, thereby improving the response speed and stability of the support system. Second, through the abutment between the surface and the end, the contact area is increased, the stress is dispersed, and the service life of the components is increased.

[0095] For example, in a frequent vibration environment, this design can ensure that the scissor-type support member 9 functions quickly and effectively, reducing the vibration amplitude of the winding assembly 3 and reducing the risk of failure caused by vibration. In terms of technical effects, the transformer's resistance to vibration is significantly improved, the stable operation of the winding assembly 3 is guaranteed, and the service life of the transformer is extended.

[0096] Overall working principle: When the winding assembly 3 vibrates, the inclined push surfaces of the upper support member 7 and the lower support member 5 interact with the connection ends of the scissor-type support member 9, respectively, so that the scissor-type support member 9 is deformed and supported according to the vibration direction, and together with the upper and lower support members, a dynamically balanced support system is formed to effectively suppress the vibration of the winding assembly 3. Overall technical effect: Through this ingenious structural design, the vibration resistance of the 35kV oil-immersed transformer is further optimized, and its reliability and stability under complex working conditions are improved.

[0097] Furthermore, the inclination direction of the upper inclined push surface 701 and the lower inclined push surface 501 is gradually decreasing from close to the scissor-type support member 9 to away from the scissor-type support member 9, so as to push the second connecting end 902 and the fourth connecting end 904 after the upper inclined push surface 701 and the lower inclined push surface 501 move downward, so that the scissor-type support member 9 becomes wider.

[0098] In the present 35 kV oil-immersed transformer, the inclination direction of the upper inclined push surface 701 and the lower inclined push surface 501 is gradually decreasing from close to the scissor-type support member 9 to far away from the scissor-type support member 9 .

[0099] The design principle is that when vibration occurs in a specific direction causing the upper inclined push surface 701 and the lower inclined push surface 501 to move downward, due to the setting of the inclined direction, the second connecting end 902 and the fourth connecting end 904 can be pushed, so that the scissor-type support member 9 becomes wider, thereby providing stronger supporting force to resist vibration.

[0100] In actual working conditions, for example, when the transformer is subjected to a large downward impact force, causing the winding assembly 3 to tend to move downward, the lower inclined push surface 501 of the lower support member 5 moves downward, and its inclined surface pushes the fourth connecting end 904, thereby increasing the width of the scissor-type support member 9 and enhancing the support for the winding assembly 3. Similarly, upward vibration will cause the upper inclined push surface 701 to produce a similar effect.

[0101] The advantages of this design are: first, the width of the scissor-type support member 9 can be adaptively adjusted according to the direction and amplitude of the vibration, providing more accurate and effective support. Second, through this active response mechanism, it can better cope with sudden strong vibrations and improve the impact resistance of the transformer.

[0102] For example, when encountering a momentary short circuit fault or a strong external vibration, the design of the inclined surface can quickly enhance the supporting effect and protect the structural integrity of the winding assembly 3 and the iron core 1.

[0103] In terms of technical effects, the stability and reliability of the transformer under extreme working conditions are significantly improved, and the risk of damage caused by vibration and impact is reduced. Overall working principle: When the winding assembly 3 is vibrated, the upper inclined push surface 701 and the lower inclined push surface 501 change the width of the scissor support 9 according to their moving direction and distance through interaction with the connection end of the scissor support 9, thereby dynamically adjusting the support force to maintain the relative stability of the winding assembly 3. Overall technical effect: Through this carefully designed inclined surface structure, the vibration and impact resistance of the 35kV oil-immersed transformer are further optimized, ensuring that it can operate safely and stably under various complex working conditions.

[0104] Furthermore, the scissor-type support member 9 further includes side support portions 905 , which are disposed on both sides of the support rod and are used to support the winding assembly 3 and the vertical portion 103 .

[0105] In the present 35kV oil-immersed transformer: the scissor support member 9 also includes side support parts 905, which are arranged on both sides of the support rod. The design principle is to increase the contact area with the winding assembly 3 and the vertical part 103 by arranging the side support parts 905 on both sides of the support rod, thereby providing more comprehensive and stable support.

[0106] In practical applications, for example, when the winding assembly 3 is subjected to vibration or pressure from the side, the side support portion 905 can promptly and effectively share and resist these forces, thereby preventing the winding assembly 3 and the vertical portion 103 from lateral displacement.

[0107] The advantages of this design are: first, it further enhances the supporting effect of the scissor-type support member 9, thereby improving the stability and reliability of the entire structure; second, it can better cope with forces from different directions, so that the winding assembly 3 can be effectively supported and protected in all directions.

[0108] For example, during the operation of the transformer, if it is hit or vibrated from the side, the side support portion 905 can play a good role in buffering and protecting, reducing the risk of damage to the winding assembly 3 and the core 1.

[0109] In terms of technical effects, the transformer's resistance to multi-directional vibration and external forces is significantly improved, and the service life of the transformer is extended. Overall working principle: When the transformer is working, no matter whether the winding assembly 3 is subjected to vibration and force from up and down, left and right or other directions, the side support part 905 of the scissor-type support member 9 cooperates with other parts to support the winding assembly 3 and the vertical part 103, maintain their relative position stability, and ensure the normal operation of the transformer. Overall technical effect: By adding the side support part 905, the function of the scissor-type support member 9 is further improved, and the safety and stability of the 35kV oil-immersed transformer in a complex working environment are improved.

[0110] Furthermore, the bottoms of the lower support ring 4 and the upper support ring 6 are both square.

[0111] In this 35kV oil-immersed transformer: the bottom of the lower support ring 4 and the upper support ring 6 are both square. The design principle is that the square bottom structure can provide a more stable support foundation and is more convenient and firm during installation and fixing. In the actual manufacturing and installation process, for example, the lower support ring 4 and the upper support ring 6 with a square bottom can be more easily aligned and fixed with other parts of the transformer, reducing installation errors. At the same time, the square structure can disperse stress more evenly when subjected to pressure, thereby improving the overall stability of the support ring.

[0112] The advantages of this design are: first, it enhances the positioning accuracy and stability of the support ring during installation, reducing the difficulty of installation; second, it improves the structural strength and pressure resistance of the support ring itself, so that it can better withstand various forces during the operation of the transformer.

[0113] For example, during the long-term operation of the transformer, the support ring at the square bottom can effectively maintain its position and shape unchanged, providing continuous and stable support for the winding assembly 3.

[0114] In terms of technical effects, the assembly accuracy and operating stability of the transformer are significantly improved, and the risk of failure caused by deformation or displacement of the support ring is reduced. Overall working principle: When the transformer is running, the lower support ring 4 and the upper support ring 6 with a square bottom can be stably fixed in the corresponding position, providing a reliable foundation for the upper support 7, the lower support 5 and the scissor support 9 and other components, and jointly ensuring the normal operation of the winding assembly 3. Overall technical effect: By designing the bottom of the lower support ring 4 and the upper support ring 6 to be square, the structural performance of the 35kV oil-immersed transformer is further optimized, and its reliability and service life are improved.

[0115] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. 35kV oil-immersed transformer, characterized in that: include: An iron core (1), the iron core (1) comprising an upper transverse portion (101), a lower transverse portion (102) and three vertical portions (103), two ends of the vertical portion (103) being respectively connected to the upper transverse portion (101) and the lower transverse portion (102), and there are three vertical portions (103) arranged in sequence in a transverse direction; A frame (2), wherein the iron core (1) is arranged on the frame (2); A winding assembly (3), the winding assembly (3) being sleeved outside the iron core (1), the winding assembly (3) having a through hole (301), and the vertical portion (103) penetrating the through hole (301); a lower support ring (4), the lower support ring (4) being arranged at the lower part of the frame (2), the vertical part (103) penetrating the lower support ring (4), the lower support ring (4) being arranged below the winding assembly (3), the lower support ring (4) having a first conical support surface (401), the first conical support surface (401) being an outer conical surface, having a lower inclined guide groove (402), the length direction of the lower inclined guide groove (402) of the first conical support surface being along the generatrix of the first conical support surface (401), and the lower inclined guide groove (402) being arranged in a plurality of circles; A lower support member (5), the lower support member (5) being slidably disposed in the lower inclined guide groove (402) and supporting the lower end of the winding assembly (3); an upper support ring (6), the upper support ring (6) being arranged on the upper part of the frame (2), the vertical portion (103) penetrating the upper support ring (6), the upper support ring (6) being arranged above the winding assembly (3), the upper support ring (6) having a second conical support surface (601), the second conical support surface (601) being an inner conical surface, having an upper inclined guide groove (602), the length direction of the upper inclined guide groove (602) being along the generatrix of the second conical support surface (601), and the upper inclined guide groove (602) being arranged in a plurality of circles; an upper support member (7), the upper support member (7) being slidably disposed in the upper inclined guide groove (602) and abutting against the upper end of the winding assembly (3); The lower support member (5) is slidably arranged in the lower inclined guide groove (402), and based on the inclination direction of the lower inclined guide groove (402), the gravity of the winding assembly (3) presses the lower support member (5) to slide outward, thereby applying a force outward along the diameter to the winding assembly (3); the upper support member (7) slides in the upper inclined guide groove (602), and based on the inclination direction of the upper inclined guide groove (602), the gravity of the winding assembly (3) causes the upper support member (7) to slide inward, thereby applying a force inward along the diameter to the winding assembly (3).

2. The 35kV oil-immersed transformer according to claim 1, characterized in that: The frame (2) comprises: An upper frame body (201) and a lower frame body (202), wherein the upper frame body (201) and the lower frame body (202) both have a receiving groove (203), and the upper transverse portion (101) and the lower transverse portion (102) are arranged in the receiving groove (203); A connecting screw rod (204), wherein two ends of the connecting screw rod (204) are respectively connected to the upper frame body (201) and the lower frame body (202).

3. The 35kV oil-immersed transformer according to claim 1, characterized in that: There is a spacing space (302) between the inner wall of the through hole (301) and the vertical portion (103), and further comprises: A connecting rod (8), wherein two ends of the connecting rod (8) are respectively hinged to the lower support member (5) and the upper support member (7), and the connecting rod (8) passes through the interval space (302).

4. The 35kV oil-immersed transformer according to claim 3, characterized in that: It also includes a scissor-type support member (9), which passes through the spacing space (302) and supports the winding assembly (3) and the vertical portion (103).

5. The 35kV oil-immersed transformer according to claim 4, characterized in that: The scissor-type support member (9) is a plurality of support rods hinged to each other, the upper end of which has a first connection end (901) and a second connection end (902), and the lower end of which has a third connection end (903) and a fourth connection end (904), the first connection end (901) being hinged to the upper support ring (6), and the third connection end (903) being hinged to the lower support ring (4).

6. The 35kV oil-immersed transformer according to claim 5, characterized in that: The upper support member (7) has an upper inclined push surface (701), and the lower support member (5) has a lower inclined push surface (501), the upper inclined push surface (701) abuts against the second connecting end (902), and the lower inclined push surface (501) abuts against the fourth connecting end (904).

7. The 35kV oil-immersed transformer according to claim 6, characterized in that: The upper inclined push surface (701) and the lower inclined push surface (501) are inclined in a direction that gradually descends from close to the scissor-type support member (9) to away from the scissor-type support member (9), and are used to push the second connecting end (902) and the fourth connecting end (904) after the upper inclined push surface (701) and the lower inclined push surface (501) move downward, so that the scissor-type support member (9) becomes wider.

8. The 35kV oil-immersed transformer according to claim 7, characterized in that: The scissor-type support member (9) further comprises: Side support portions (905), the side support portions (905) being arranged on both sides of the scissor-type support member (9) and being used to support the winding assembly (3) and the vertical portion (103).

9. The 35kV oil-immersed transformer according to claim 7, characterized in that: The bottoms of the lower support ring (4) and the upper support ring (6) are both square.

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