Transformer with safety protection structure

Abstract

The utility model discloses a transformer with a safety protection structure, which comprises a transformer outer shell, the front side and the rear side of the transformer outer shell are provided with protection structures, and each protection structure consists of a buffer spring, a sleeve and a buffer plate. The sleeve is in telescopic fit with a sleeve on the outer wall of the transformer shell, and the buffer spring is arranged in the sleeve to connect the sleeve with the sleeve. The buffer plate is formed by compounding a protective plate, a honeycomb aluminum plate, a rubber plate and a plastic insulating plate, and the sleeve and the plastic insulating plate are integrally formed. The transformer protection structure has efficient shock resistance, and the risk of deformation of an internal winding or deviation of a magnetic core is reduced through a multi-layer energy absorption system; the material synergism is high, all layers are tightly combined, and the protection effect is achieved for a long time; and the structure stability is high, protection failure caused by looseness of the connecting piece is avoided, multidirectional impact can be adapted, and safe and stable operation of the transformer is powerfully guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a transformer with a safety protection structure. Background Technology

[0002] In modern power systems, transformers, as key equipment, are widely used in various fields, undertaking important tasks such as voltage transformation, power transmission, and distribution. Their operational stability and safety directly affect the reliable power supply of the entire power system.

[0003] However, in real-world applications, transformers face numerous potential risks, with safety threats such as mechanical impact and vibration becoming increasingly prominent. Traditional transformer protection structures often employ single-material protective plates or simple spring buffer designs, which present the following technical bottlenecks.

[0004] 1. Insufficient impact resistance: Although conventional metal anti-collision plates (such as patent CN222380374U) can withstand direct impact, they lack an energy absorption layer. The impact force is easily transmitted to the transformer body, causing internal winding deformation or magnetic core displacement.

[0005] 2. Poor material synergy: Existing composite buffer plates (such as rubber + metal plate) have low interlayer bonding strength and are prone to delamination failure under long-term impact (see the single-layer rubber plate structure in patent CN222051502U).

[0006] 3. Structural stability defects: The separate installation design of the sleeve and the buffer plate (such as the guide post + reset spring structure of patent CN222126183U) is prone to protection failure due to loosening of the connecting parts, and cannot adapt to multi-directional impacts.

[0007] To improve the safety and stability of transformers and reduce equipment damage caused by accidents such as collisions, the development of a transformer with a reliable safety protection structure is particularly urgent. Against this backdrop, this patent proposes a transformer with a safety protection structure. Utility Model Content

[0008] In view of the shortcomings of the prior art, this utility model provides a transformer with a safety protection structure.

[0009] The technical solution adopted by this utility model is: a transformer with a safety protection structure, including a transformer housing, and protective structures are provided on the front and rear sides of the transformer housing, the protective structures including buffer springs, bushings and buffer plates;

[0010] The bushing extends into the sleeve on the outer wall of the transformer housing and is in telescopic cooperation with the sleeve.

[0011] The buffer spring is installed inside the sleeve, with one end of the buffer spring connected to the sleeve and the other end connected to the sleeve.

[0012] The buffer plate is composed of a protective plate, a honeycomb aluminum plate, a rubber plate, and a plastic insulating plate, and the sleeve is integrally formed with the plastic plate.

[0013] Furthermore, the protective plate is 1-3mm thick and is located on the outermost layer; the honeycomb aluminum plate is 5-10mm thick and is bonded to the inner side of the protective plate with epoxy resin adhesive; the rubber plate is 3-6mm thick and is vulcanized and bonded to the inner side of the honeycomb aluminum plate; the plastic insulating plate is 2-4mm thick and is integrally connected to the rubber plate and sleeve by molding.

[0014] Furthermore, the inner wall of the sleeve is provided with a guide groove, the sleeve is provided with a raised step that slides in cooperation with the guide groove, and the opening of the sleeve is provided with a blocking step for the sleeve to slide out of the sleeve.

[0015] Furthermore, the spring constant of the buffer spring is 5000-8000 N / m, and the compression stroke does not exceed 2 / 3 of the sleeve depth; a rubber buffer block is provided at the bottom of the sleeve, and the height of the rubber buffer block is 1 / 5-1 / 4 of the sleeve depth.

[0016] Furthermore, the surface of the protective plate is provided with raised rubber balls.

[0017] Furthermore, the guide groove has a T-shaped cross-section, the raised step is made of nylon or polytetrafluoroethylene (PTFE), and the clearance fit tolerance between the raised step and the guide groove is H7 / g6.

[0018] Furthermore, the transformer housing is provided with several dovetail grooves at intervals, and several heat dissipation fins are connected to the dovetail grooves.

[0019] The beneficial effects of this utility model are:

[0020] 1. Highly Effective Impact Resistance: This patented protective structure utilizes a multi-layered energy absorption system through the inclusion of buffer springs, the telescopic cooperation of sleeves and bushings, and a buffer plate composed of a protective plate, honeycomb aluminum plate, rubber plate, and plastic insulating plate. Upon mechanical impact, the buffer springs first absorb a portion of the impact force, converting kinetic energy into elastic potential energy through their elastic deformation. Subsequently, the honeycomb aluminum plate, with its unique honeycomb structure, further disperses and absorbs the remaining impact force. Its honeycomb structure can collapse in stages under stress, effectively dissipating energy and preventing the impact force from being directly transmitted to the transformer body. Compared to conventional metal impact plates that lack an energy absorption layer, this patent significantly reduces the risk of internal winding deformation or core misalignment, substantially improving the transformer's impact resistance.

[0021] 2. High Material Synergy: The buffer plate of this patent adopts a composite structure, with each layer of material working synergistically to overcome the problems of low interlayer bonding strength and easy delamination failure in traditional composite buffer plates. The outermost protective plate can withstand direct external impacts and protect the internal materials; the honeycomb aluminum plate provides structural support while working closely with the rubber plate. The rubber plate has excellent flexibility and damping properties, which not only further absorbs vibration energy but also enhances the bonding strength with the honeycomb aluminum plate and other layers, ensuring that even under long-term impact, the layers of the buffer plate remain tightly bonded and continue to provide effective protection.

[0022] 3. Structural Stability: This patent integrates the bushing and plastic insulation board into a single unit, avoiding the problem of protection failure due to loose connections, compared to the traditional separate installation design of the bushing and buffer plate. This integrated design makes the protective structure more robust, better able to withstand multi-directional impacts, greatly improving the safety and stability of the transformer, reducing equipment damage caused by collisions and other unexpected factors, and providing a solid guarantee for reliable power supply to the power system.

[0023] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the cross-section of the sleeve and the bushing.

[0026] Figure 3 for Figure 1 Enlarged diagram of point A in the middle.

[0027] Figure 1-3 In the middle: 1. Transformer housing; 2. Buffer spring; 3. Bushing; 4. Sleeve; 5. Buffer plate; 6. Protective plate; 7. Honeycomb aluminum plate; 8. Rubber plate; 9. Plastic insulation plate; 10. Guide groove; 11. Raised step; 12. Blocking step; 13. Rubber buffer block; 14. Rubber ball; 15. Dovetail groove; 16. Heat dissipation fins. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] This utility model provides a transformer with a safety protection structure.

[0031] In this embodiment, refer to Figure 1-3 The transformer with a safety protection structure includes a transformer housing 1, and protective structures are provided on the front and rear sides of the transformer housing 1. The protective structures include a buffer spring 2, a bushing 3, and a buffer plate 5.

[0032] The bushing 3 extends into the sleeve 4 on the outer wall of the transformer housing and is in telescopic cooperation with the sleeve.

[0033] The buffer spring is installed inside the sleeve, with one end of the buffer spring connected to the sleeve and the other end connected to the sleeve.

[0034] The buffer plate 5 is composed of a protective plate 6, a honeycomb aluminum plate 7, a rubber plate 8, and a plastic insulating plate, and the sleeve is integrally formed with the plastic plate.

[0035] The above technical solution creates a complete and effective protection system by installing protective structures including buffer springs, bushings, and buffer plates on the front and rear sides of the transformer casing. The buffer springs, in conjunction with the telescopic structure of the bushings and sleeves, provide initial cushioning upon impact, converting some of the impact force into elastic potential energy. The buffer plate, composed of a protective plate, honeycomb aluminum plate, rubber plate, and plastic insulation plate, has each layer playing a different role, forming a multi-layered energy absorption and protection system. The protective plate resists direct external impacts, the honeycomb aluminum plate disperses energy using its unique structure, the rubber plate further absorbs vibrations and enhances interlayer bonding, and the plastic insulation plate provides insulation and is integrally formed with the bushings, ensuring structural stability. Overall, this significantly improves the transformer's protection against mechanical impacts and other accidents, reducing the risk of equipment damage due to external impacts.

[0036] Specifically, the protective plate is 1-3mm thick and is located on the outermost layer; the honeycomb aluminum plate is 5-10mm thick and is bonded to the inner side of the protective plate with epoxy resin adhesive; the rubber plate is 3-6mm thick and is vulcanized and laminated to the inner side of the honeycomb aluminum plate; the plastic insulating plate is 2-4mm thick and is integrally connected to the rubber plate and sleeve by molding.

[0037] In this embodiment, the buffer plate is a four-layer composite structure consisting of a protective plate (PC / ASA), a honeycomb aluminum plate, a rubber plate, and a plastic insulating plate, achieving a gradual attenuation of impact energy. Compared to the traditional solution using a single metal plate, the overall impact resistance is significantly improved.

[0038] Specifically, the inner wall of the sleeve is provided with a guide groove 10, the sleeve is provided with a raised step 11 that slides in cooperation with the guide groove, and the opening of the sleeve is provided with a blocking step 12 for the sleeve to slide out of the sleeve.

[0039] In this embodiment, a guide groove is provided on the inner wall of the sleeve, which slides in conjunction with the raised step on the sleeve, providing precise guidance for the extension and retraction of the sleeve within the sleeve. This allows the sleeve to extend and retract smoothly under impact, preventing the protective structure from failing due to misalignment. The blocking step at the sleeve opening effectively prevents the sleeve from slipping out of the sleeve, ensuring the integrity of the protective structure, ensuring its continued function, and enhancing its reliability in complex impact environments.

[0040] Specifically, the spring constant of the buffer spring is 5000-8000 N / m, and the compression stroke does not exceed 2 / 3 of the sleeve depth; a rubber buffer block 13 is provided at the bottom of the sleeve, and the height of the rubber buffer block 13 is 1 / 5-1 / 4 of the sleeve depth.

[0041] In this embodiment, the spring constant is set between 5000 and 8000 N / m. This range allows for reasonable elastic deformation based on common impact forces, absorbing impact energy. The compression stroke does not exceed 2 / 3 of the sleeve depth, ensuring sufficient space for buffering during spring compression and preventing damage to the spring or protection failure due to over-compression. A rubber buffer block at the bottom of the sleeve, with a height of 1 / 5 to 1 / 4 of the sleeve depth, further absorbs the remaining impact force after the spring is compressed to a certain extent, providing secondary buffering and effectively reducing the impact on the transformer casing and internal components, thus improving the protective structure's ability to absorb and mitigate impact forces.

[0042] Specifically, the surface of the protective plate is provided with raised rubber balls 14.

[0043] In this embodiment, the protective plate surface is provided with raised rubber balls. Upon impact, the rubber balls are the first to contact the impacting object. The rubber balls are elastic and can absorb part of the impact force through their deformation, while simultaneously changing the direction of the impact force and dispersing it over a larger area of ​​the protective plate. This not only enhances the protective plate's resistance to impacts but also further reduces the direct impact force on the transformer body, effectively protecting the transformer and lowering the risk of damage to the protective plate or internal transformer components due to concentrated localized stress.

[0044] Specifically, the guide groove has a T-shaped cross-section, the raised step is made of nylon or polytetrafluoroethylene (PTFE), and the clearance fit tolerance between the raised step and the guide groove is H7 / g6.

[0045] In this embodiment, the cross-section of the guide groove is T-shaped. This shape design better constrains the convex step, allowing it to slide stably within the guide groove and preventing lateral displacement during sliding. The convex step is made of nylon or polytetrafluoroethylene (PTFE), both of which have low coefficients of friction, making the sliding of the convex step within the guide groove smoother and reducing the impact of frictional resistance on the expansion and contraction of the sleeve. The clearance tolerance between the convex step and the guide groove is H7 / g6, ensuring that the clearance is neither too large, causing wobbling and affecting the stability of the protective structure, nor too small, generating excessive friction. This ensures precise and stable expansion and contraction of the sleeve within the sleeve, improving the overall performance of the protective structure.

[0046] Specifically, the transformer housing is provided with a number of dovetail grooves 15 at intervals, and a number of heat dissipation fins 16 are connected to the dovetail grooves 15.

[0047] In this embodiment, a plurality of dovetail grooves are spaced apart on the transformer casing, and a plurality of heat dissipation fins are connected thereto. The dovetail groove design facilitates the installation and fixation of the heat dissipation fins, allowing them to be securely connected to the transformer casing. The heat dissipation fins increase the heat dissipation area of ​​the transformer casing, accelerating the dissipation of heat from the transformer's interior to the surrounding environment, effectively reducing the transformer's operating temperature. Good heat dissipation performance helps improve the transformer's operating efficiency, extend its service life, ensure stable operation under various operating conditions, and reduce the risk of failure due to overheating.

[0048] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A transformer with a safety protection structure, comprising a transformer housing, characterized in that: The transformer housing is provided with protective structures on the front and rear sides, and the protective structures include buffer springs, bushings and buffer plates. The bushing extends into the sleeve on the outer wall of the transformer housing and is in telescopic cooperation with the sleeve. The buffer spring is installed inside the sleeve, with one end of the buffer spring connected to the sleeve and the other end connected to the sleeve. The buffer plate is composed of a protective plate, a honeycomb aluminum plate, a rubber plate, and a plastic insulating plate, and the sleeve is integrally formed with the plastic plate.

2. The transformer with a safety protection structure according to claim 1, characterized in that: The protective plate is 1-3mm thick and is located on the outermost layer. The honeycomb aluminum plate is 5-10mm thick and is bonded to the inner side of the protective plate with epoxy resin. The rubber plate is 3-6mm thick and is vulcanized and bonded to the inner side of the honeycomb aluminum plate. The plastic insulating plate is 2-4mm thick and is integrally connected to the rubber plate and sleeve by molding.

3. The transformer with a safety protection structure according to claim 1, characterized in that: The inner wall of the sleeve is provided with a guide groove, the sleeve is provided with a raised step that slides in cooperation with the guide groove, and the opening of the sleeve is provided with a blocking step for the sleeve to slide out of the sleeve.

4. The transformer with a safety protection structure according to claim 1, characterized in that: The spring constant of the buffer spring is 5000-8000 N / m, and the compression stroke does not exceed 2 / 3 of the sleeve depth; a rubber buffer block is provided at the bottom of the sleeve, and the height of the rubber buffer block is 1 / 5-1 / 4 of the sleeve depth.

5. The transformer with a safety protection structure according to claim 1, characterized in that: The surface of the protective plate is provided with raised rubber balls.

6. The transformer with a safety protection structure according to claim 3, characterized in that: The guide groove has a T-shaped cross-section, and the raised step is made of nylon or polytetrafluoroethylene (PTFE). The clearance fit tolerance between the raised step and the guide groove is H7 / g6.

7. The transformer with a safety protection structure according to claim 1, characterized in that: The transformer housing is provided with several dovetail grooves at intervals, and several heat dissipation fins are connected to the dovetail grooves.

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