Oil-immersed transformer
By incorporating elastic elements in oil-immersed transformers to absorb vibrations, the problem of fatigue damage caused by high loads on the elastic rods is solved, extending the vibration reduction and noise reduction effect and improving structural compactness, thus enhancing practicality.
Patent Information
- Application Number
- CN202520201030.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-08
AI Technical Summary
The elastic rods of existing oil-immersed transformers have high loads, which easily lead to fatigue damage and affect the vibration reduction and noise reduction effect.
A first fixed bracket and a second fixed bracket are used to form a receiving cavity. The magnetic core assembly is located in the receiving cavity. An elastic element is set between the magnetic core assembly and the second fixed bracket. The upper and lower sides of the elastic element abut against the magnetic core assembly and the second fixed bracket, respectively. The elastic element absorbs vibration and reduces the load.
It extends the service life of elastic components, achieves effective shock absorption and noise reduction, has a compact structure, strong practicality, and good market prospects.
Smart Images
Figure CN223871312U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transformer technical field, concretely relates to an oil -immersed transformer. BACKGROUND
[0002] Oil -immersed transformer is the iron core and winding of transformer are completely immersed in insulating oil, utilize transformer oil and cool a kind of transformer for insulation. Since transformer oil has good insulating property and heat conduction performance, thereby can effectively solve transformer large capacity heat dissipation problem and high voltage insulation problem.
[0003] In related art, CN213183908U discloses an oil-immersed transformer iron core fixed mounting frame, which installs the iron core by using elastic rods, absorbs vibration from the iron core through elastic deformation, avoids generating too much noise, improves installation reliability by fixing plate of mounting seat, and sets anti-slip pad on the mounting seat to avoid offset caused by vibration and iron core falling off.
[0004] However, the elastic rod in the related art needs to bear the weight of the upper bracket, the lower bracket and the iron core, the load of the elastic rod is large, and as the use time increases, the elastic rod will be damaged due to fatigue, which will affect the shock absorption and noise reduction effect. UTILITY MODEL CONTENTS
[0005] The utility model aims at the phenomenon that the elastic rod of the oil-immersed transformer in the prior art has large load and is easy to be damaged due to fatigue, which affects the shock absorption and noise reduction effect, and provides an oil-immersed transformer.
[0006] The utility model adopts the technical scheme: an oil-immersed transformer, comprising a first fixed support, a second fixed support fixedly arranged on the first fixed support and a magnetic core group, a containing cavity is formed between the first fixed support and the second fixed support, the magnetic core group is located in the containing cavity, an elastic member is arranged between the magnetic core group and the second fixed support, and the upper and lower sides of the elastic member are respectively in abutment with the magnetic core group and the second fixed support.
[0007] Optionally, the magnetic core group comprises a first magnetic core and a second magnetic core arranged oppositely, a magnetic core fastener for clamping and fixing the first magnetic core and the second magnetic core, and two wire-wound groups respectively arranged in the first magnetic core and the second magnetic core, the opposite side of the first magnetic core and the second magnetic core is provided with a magnetic core column, the two wire-wound groups are respectively wound on the two magnetic core columns, and a closed magnetic circuit is formed between the first magnetic core, the second magnetic core and the two magnetic core columns.
[0008] Optionally, the magnetic core fastener comprises a C-shaped clamp arranged around the first magnetic core and the second magnetic core, and a clamping block arranged at an end of the C-shaped clamp, the clamping block abutting against one side of the first magnetic core away from the second magnetic core or one side of the first magnetic core facing the second magnetic core.
[0009] Optionally, a wire-wound winding pad is arranged between the two wire-wound windings and on the side of the two wire-wound windings contacting the first magnetic core and the second magnetic core.
[0010] Optionally, the elastic member is a spring piece.
[0011] Optionally, the spring piece comprises two U-shaped portions and a connecting portion arranged between the two U-shaped portions, the two U-shaped portions are symmetrically arranged, and the two U-shaped portions and the connecting portion are integrally formed.
[0012] Optionally, the closed ends of the two U-shaped portions respectively abut against one side of the first magnetic core and one side of the second magnetic core, and one end of each of the two U-shaped portions away from the connecting portion is provided with an abutting portion abutting against the second fixed support.
[0013] Optionally, a mounting hole is arranged on the connecting portion, and the mounting hole is used to fixedly connect the connecting portion and the second fixed support.
[0014] Optionally, a positioning groove for positioning the magnetic core set is arranged on the first fixed support.
[0015] Optionally, the first fixed support is made of an aluminum alloy material, and the second fixed support is made of an electric wood material.
[0016] After the above technical scheme is adopted, the present application has the following beneficial effects:
[0017] The application discloses an oil-immersed transformer, which comprises a first fixed support, a second fixed support fixedly arranged on the first fixed support, and a magnetic core set. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0019] Figure 1 is a schematic diagram of the overall structure of the embodiment;
[0020] Figure 2 is an exploded view of the embodiment;
[0021] Figure 3 is an exploded view of the magnetic core group in the embodiment;
[0022] Figure 4 is a display diagram of the spring sheet in the embodiment.
[0023] The reference signs are as follows: 10, first fixed support; 11, positioning groove; 12, first through groove; 20, second fixed support; 21, second through groove; 22, terminal; 30, magnetic core group; 31, first magnetic core; 32, second magnetic core; 33, magnetic core fastener; 331, C-shaped clamp; 332, clamping block; 34, magnetic core column; 35, wire-wound winding; 36, wire-wound gasket; 40, spring sheet; 41, U-shaped part; 42, connecting part; 421, mounting hole; 43, abutting part. DETAILED DESCRIPTION
[0024] The following will combine the drawings in the embodiments of the present application to Figures 1-4 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments only constitute some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0025] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, …), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.
[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0027] This embodiment relates to an oil-immersed transformer, as shown in the following figure. Figures 1-4 The device includes a first fixed bracket 10, a second fixed bracket 20 fixedly disposed on the first fixed bracket 10, and a magnetic core assembly 30 disposed between the first fixed bracket 10 and the second fixed bracket 20. The first fixed bracket 10 and the second fixed bracket 20 cooperate to form a receiving cavity, the magnetic core assembly 30 is located in the receiving cavity, and an elastic member is disposed between the magnetic core assembly 30 and the second fixed bracket 20. The upper and lower sides of the elastic member abut against the magnetic core assembly 30 and the second fixed bracket 20, respectively.
[0028] In this embodiment, there are two sets of magnetic core assemblies 30, which are symmetrically arranged within the accommodating cavity formed by the first fixed bracket 10 and the second fixed bracket 20. In other embodiments, the number of magnetic core assemblies 30 may be one, three, or other quantities, which are not limited here. Correspondingly, the number of elastic elements may also be increased or decreased according to actual needs.
[0029] Understandably, when the transformer is working, the elastic element absorbs the vibration from the magnetic core assembly 30, thereby preventing the magnetic core assembly 30 from generating too much noise. Moreover, the elastic element only needs to bear the gravity from the second fixed bracket 20, which reduces the load and greatly extends the service life of the elastic element.
[0030] Furthermore, referring to Figure 2 and Figure 3The magnetic core assembly 30 includes a first magnetic core 31 and a second magnetic core 32 arranged opposite to each other, a magnetic core fastener 33 for clamping and fixing the first magnetic core 31 and the second magnetic core 32, and two coil windings 35 respectively disposed in the first magnetic core 31 and the second magnetic core 32. A magnetic core post 34 is provided on the opposite side of the first magnetic core 31 and the second magnetic core 32. The two coil windings 35 are respectively wound on the magnetic core post 34, and a closed magnetic circuit is formed between the first magnetic core 31, the second magnetic core 32 and the two magnetic core posts 34.
[0031] In this embodiment, the first magnetic core 31 and the second magnetic core 32 are two U-shaped blocks with openings facing each other. The two magnetic core posts 34 are located inside the openings of the U-shaped blocks and are on the same straight line. The coil winding 35 is a "paper-insulated wire". Compared with the traditional use of polyimide tape to fix the winding, the use of "paper-insulated wire" in this embodiment can effectively avoid the hidden danger of inter-turn short circuit caused by the dissolution of polyimide tape in transformer oil.
[0032] Furthermore, the magnetic core fastener 33 includes a C-shaped clip 331 surrounding the first magnetic core 31 and the second magnetic core 32, and a clamping block 332 disposed at the end of the C-shaped clip 331. The clamping block 332 abuts against the side of the first magnetic core 31 away from the second magnetic core 32 or against the side of the first magnetic core 31 away from the second magnetic core 32.
[0033] The first magnetic core 31 and the second magnetic core 32 are located inside the C-shaped clamp 331, and the clamping block 332 abuts against the side of the first magnetic core 31 away from the second magnetic core 32 or against the side of the first magnetic core 31 away from the second magnetic core 32, thereby achieving clamping and fixing of the combination of the first magnetic core 31 and the second magnetic core 32, avoiding the separation of the first magnetic core 31 and the second magnetic core 32 during operation, and improving the overall stability of the magnetic core assembly 30.
[0034] Furthermore, a coil pad 36 is provided between the two coil windings 35 and on the side where the two coil windings 35 contact the first magnetic core 31 and the second magnetic core 32.
[0035] By setting the coil spacer 36, the two coil windings 35 will not interfere with each other during the energization process.
[0036] Furthermore, referring to Figure 2 and Figure 4 The elastic element is a spring sheet 40, which includes two U-shaped portions 41 and a connecting portion 42 disposed between the two U-shaped portions 41. The two U-shaped portions 41 are symmetrically arranged, and the two U-shaped portions 41 and the connecting portion 42 are integrally formed.
[0037] By adopting the above configuration, the spring 40 can stably absorb the vibration generated by the magnetic core assembly 30. At the same time, the two U-shaped parts 41 create a gap between the magnetic core assembly 30 and the second fixed bracket 20, so that in an oil-conditioning environment, transformer oil can enter and exit the receiving cavity formed by the cooperation of the first fixed bracket 10 and the second fixed bracket 20 through the gap, thereby improving the heat dissipation effect.
[0038] Furthermore, it should be noted that in this embodiment, the receiving cavity formed by the first fixed bracket 10 and the second fixed bracket 20 has openings on both sides, and the number of spring pieces 40 is at least two sets. The two sets of spring pieces 40 are symmetrically arranged at the openings on both sides of the receiving cavity, thereby improving the heat dissipation effect of the entire oil-immersed transformer.
[0039] Furthermore, the closed ends of the two U-shaped portions 41 abut against one side of the first magnetic core 31 and the second magnetic core 32, respectively, and one end of the far connecting portion 42 of the two U-shaped portions 41 is provided with an abutting portion 43 that abuts against the second fixed bracket 20.
[0040] Understandably, by adopting the above settings, the spring piece 40 can stably abut against the magnetic core assembly 30 and the second fixed bracket 20, thereby ensuring the vibration reduction and noise reduction effect.
[0041] Furthermore, the connecting part 42 is provided with a mounting hole 421, which is used to fix the connecting part 42 to the second fixed bracket 20.
[0042] By setting the mounting hole 421, the connecting part 42 is fixedly connected to the second fixed bracket 20, that is, the spring piece 40 is fixedly connected to the second fixed bracket 20, so that the spring piece 40 can stably provide elastic force to the magnetic core assembly 30, that is, the spring piece 40 can stably absorb the vibration from the magnetic core assembly 30.
[0043] Furthermore, the first fixed bracket 10 is provided with a positioning groove 11 for positioning the magnetic core assembly 30. The positioning groove 11 enables rapid positioning of the magnetic core assembly 30, thereby improving production efficiency.
[0044] In addition, a first through slot 12 is provided on the first fixed bracket 10, which penetrates the first fixed bracket 10 and is located in the middle of the positioning slot 11. The first through slot 12 allows external transformer oil to enter the core assembly 30 under oil conditions, thus dissipating the heat generated by the core assembly 30 through the first through slot 12 to the outside of the first fixed bracket 10 and the second fixed bracket 20, thereby improving heat dissipation.
[0045] Furthermore, combined Figure 1 and Figure 2The second fixed bracket 20 is also provided with a second through slot 21, which penetrates the second fixed bracket 20. The number of the first through slot 12 and the second through slot 21 are both corresponding to the magnetic core group 30. That is, in this embodiment, there are two sets of the first through slot 12 and the second through slot 21, and the function of the second through slot 21 is the same as that of the first through slot 12.
[0046] Furthermore, the first fixing bracket 10 is made of aluminum alloy, and the second fixing bracket 20 is made of bakelite. In this embodiment, making the first fixing bracket 10 of aluminum alloy and the second fixing bracket 20 of bakelite can improve the stability of the entire oil-immersed transformer and ensure the working efficiency and service life of the oil-immersed transformer.
[0047] In addition, the second fixed bracket 20 is also provided with a plurality of terminals 22 electrically connected to the magnetic core assembly 30, and the plurality of terminals 22 are evenly distributed on the periphery of the second through slot 21. In this embodiment, one set of magnetic core assembly 30 corresponds to three terminals 22. In other embodiments, the number of terminals 22 may be increased or decreased accordingly depending on the actual situation, and no limitation is made here.
[0048] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. An oil-immersed transformer, characterized in that, The device includes a first fixed bracket (10), a second fixed bracket (20) fixed on the first fixed bracket (10), and a magnetic core assembly (30). The first fixed bracket (10) and the second fixed bracket (20) cooperate to form a receiving cavity. The magnetic core assembly (30) is located in the receiving cavity. An elastic member is provided between the magnetic core assembly (30) and the second fixed bracket (20). The upper and lower sides of the elastic member abut against the magnetic core assembly (30) and the second fixed bracket (20) respectively.
2. The oil-immersed transformer according to claim 1, characterized in that, The magnetic core assembly (30) includes a first magnetic core (31) and a second magnetic core (32) arranged opposite to each other, a magnetic core fastener (33) for clamping and fixing the first magnetic core (31) and the second magnetic core (32), and two coil windings (35) respectively disposed in the first magnetic core (31) and the second magnetic core (32). A magnetic core post (34) is provided on the side opposite to the first magnetic core (31) and the second magnetic core (32). The two coil windings (35) are respectively wound on the two magnetic core posts (34), and a closed magnetic circuit is formed between the first magnetic core (31), the second magnetic core (32) and the two magnetic core posts (34).
3. An oil-immersed transformer according to claim 2, characterized in that, The magnetic core fastener (33) includes a C-shaped clamp (331) surrounding the first magnetic core (31) and the second magnetic core (32) and a clamping block (332) disposed at the end of the C-shaped clamp (331). The clamping block (332) abuts against the side of the first magnetic core (31) away from the second magnetic core (32) or against the side of the first magnetic core (31) away from the second magnetic core (32).
4. An oil-immersed transformer according to any one of claims 2 or 3, characterized in that, A coil pad (36) is provided between the two coil windings (35) and on the side where the two coil windings (35) contact the first magnetic core (31) and the second magnetic core (32).
5. An oil-immersed transformer according to claim 2, characterized in that, The elastic element is a spring sheet (40).
6. An oil-immersed transformer according to claim 5, characterized in that, The spring piece (40) includes two U-shaped parts (41) and a connecting part (42) disposed between the two U-shaped parts (41). The two U-shaped parts (41) are symmetrically arranged, and the two U-shaped parts (41) and the connecting part (42) are integrally formed.
7. An oil-immersed transformer according to claim 6, characterized in that, The closed ends of the two U-shaped portions (41) abut against one side of the first magnetic core (31) and the second magnetic core (32), respectively. The ends of the two U-shaped portions (41) away from the connecting portion (42) are provided with abutting portions (43) that abut against the second fixed bracket (20).
8. An oil-immersed transformer according to claim 6, characterized in that, The connecting part (42) is provided with a mounting hole (421), which is used to fix the connecting part (42) to the second fixed bracket (20).
9. An oil-immersed transformer according to claim 1, characterized in that, The first fixed bracket (10) has a positioning groove (11) for positioning the magnetic core assembly (30).
10. An oil-immersed transformer according to claim 1, characterized in that, The first fixing bracket (10) is made of aluminum alloy, and the second fixing bracket (20) is made of bakelite.