Protective transformer
By designing anti-collision brackets, side support rods and spring buffer structures on the transformer, the problem of deformation of the cooling fins under impact is solved, and effective impact force absorption and heat dissipation function protection are achieved.
Patent Information
- Application Number
- CN202422546969.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The heat dissipation fins of the existing transformer are easily deformed when impacted, resulting in loss of heat dissipation function. In addition, the existing reinforcement ribs are directly fixed to the transformer and cannot effectively absorb the impact force.
A protective transformer was designed, which adopted an anti-collision bracket, side support rod, movable rod and spring buffer structure. The anti-collision bracket first contacted the impact object, and then the movable rod slid and used the spring buffer structure to absorb the impact force to protect the heat dissipation fins.
It effectively absorbs impact, protects the heat dissipation fins and transformer box, prevents the loss of heat dissipation function, and can be disassembled to replace damaged parts to improve impact resistance.
Smart Images
Figure CN223308831U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to a protective transformer. Background Art
[0002] Transformers are essential equipment for power transmission and distribution, widely used in industries such as industry, agriculture, transportation, and urban communities. Transformers can be categorized by their intended use: distribution transformers, power transformers, hermetically sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, box-type transformer test transformers, corner transformers, high-current transformers, and excitation transformers.
[0003] Large transformers are equipped with heat sinks on their outer casings. These heat sinks are usually cooling fins located on the outside of the transformer. These fins increase the transformer's surface area, improve heat exchange efficiency, and help dissipate heat generated inside the transformer through natural air convection or forced air cooling, ensuring that the transformer operates within a safe temperature range. However, since the cooling fins are exposed, when the transformer is impacted from the side, the exposed cooling fins can easily deform, affecting the normal operation of the entire device. To strengthen the structural strength of the heat sink and protect the transformer, some transformers have reinforcing ribs on the edges of the cooling fins. Therefore, when the transformer is subjected to a large impact force on the side, the impact force will still act on the heat sink because the reinforcing ribs are directly fixed to the transformer and the heat sink, causing the heat sink to deform and lose its heat dissipation function. Utility Model Content
[0004] In response to the above problems, the present invention proposes a protective transformer to solve the problem that when the side of the existing protective transformer is subjected to a large impact force, the impact force will still act on the heat sink because the reinforcing ribs are directly fixed to the transformer and the heat sink, resulting in deformation of the heat sink and loss of heat dissipation function.
[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a protective transformer, comprising a transformer box, with heat dissipation fins provided on both sides of the transformer box;
[0006] An anti-collision bracket and two side support rods are provided on the side of the heat dissipation fins away from the transformer box. The two side support rods are respectively arranged on the front and rear sides of the heat dissipation fins. The upper and lower ends of the side support rods are provided with mounting blocks, which are fixedly connected to the side support rods. The anti-collision bracket is detachably connected to the side of the mounting block away from the transformer box.
[0007] A movable rod is provided between the two adjacent side support rods on the left and right. The two ends of the movable rod are fixedly connected to the two side support rods respectively. The movable rod passes through the transformer box and is slidably connected to the transformer box. A spring buffer structure is provided at the connection between the movable rod and the mounting block.
[0008] A further improvement is that the mounting blocks are respectively arranged on the four corners of the left and right end surfaces of the transformer box, and the mounting blocks surround the heat dissipation fins.
[0009] Further improvements are: the anti-collision bracket includes a cross-shaped protective rod composed of two cross-arranged rods, the two rods are fixed by welding, and the four ends of the cross-shaped protective rod are provided with bent pipe connecting sections, which are fixedly connected to the cross-shaped protective rod, and each bent pipe connecting section is detachably connected to each mounting block.
[0010] A further improvement is that a threaded hole is provided on the elbow connection section, a fixing bolt is installed in the threaded hole, the fixing bolt passes through the elbow connection section and is threadedly connected to a threaded groove provided on the outside of the mounting block, and the threaded groove is provided on the side of the elbow connection section away from the transformer box.
[0011] A further improvement is that a slot is provided on the side of the mounting block away from the transformer box, the slot surrounds the thread groove, the slot diameter is larger than the thread groove diameter, and the slot is plugged into and matched with the elbow connection section.
[0012] A further improvement is that the spring buffer structure includes a spring, which is sleeved on both ends of the movable rod. A damping ring is fixedly connected to each end of the spring. The damping ring is slidingly connected to the movable rod, one of the damping rings is fixedly connected to the transformer box, and the other damping ring is fixedly connected to the mounting block.
[0013] A further improvement is that: a support rib is provided at the lower end of the transformer box, and the support rib is fixedly connected to the transformer box.
[0014] The beneficial effects of the present invention are as follows: when an impact occurs on the side of the transformer box, the anti-collision bracket will first contact the impact object and push the movable rod to slide. While the movable rod slides, the spring buffer structure will contract to absorb the impact force acting on the mounting block, thereby improving the impact resistance of the anti-collision bracket and protecting the transformer box and the heat dissipation fins.
[0015] The detachable connection method of the anti-collision bracket makes it easy for staff to replace damaged anti-collision brackets, which is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0017] Figure 1 It is a structural diagram of the transformer box in the utility model.
[0018] Figure 2 It is a structural diagram of the movable rod in the utility model.
[0019] Figure 3 It is a partial structural diagram of the cross-shaped protection bar in the utility model.
[0020] Among them: 1. Transformer box; 2. Support ribs; 3. Heat dissipation fins; 4. Cross-shaped protective rod; 41. Bend pipe connection section; 42. Threaded hole; 5. Side support rod; 51. Mounting block; 52. Slot; 53. Threaded groove; 6. Spring; 61. Damping ring; 7. Movable rod; 8. Fixing bolt. DETAILED DESCRIPTION
[0021] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0022] according to Figure 1 、 2 As shown in FIG. 3 , a protective transformer is proposed in this embodiment, including a transformer box 1 , with heat dissipation fins 3 provided on both sides of the transformer box 1 ;
[0023] An anti-collision bracket and two side support rods 5 are provided on the side of the heat dissipation fin 3 away from the transformer box 1. The two side support rods 5 are respectively arranged on the front and rear sides of the heat dissipation fin 3. The upper and lower ends of the side support rods 5 are provided with mounting blocks 51. The mounting blocks 51 are fixedly connected to the side support rods 5, and the anti-collision bracket is detachably connected to the side of the mounting block 51 away from the transformer box 1; the anti-collision bracket is fixed to the side support rods 5 through the mounting blocks 51. When the two sides of the transformer box 1 collide, the anti-collision bracket will first contact the impact object from both sides of the transformer box 1 to protect the transformer box 1 and the heat dissipation fins 3. The detachable connection method makes it convenient for the staff to replace the damaged anti-collision bracket.
[0024] A movable rod 7 is provided between the two adjacent side support rods 5 on the left and right sides. The two ends of the movable rod 7 are fixedly connected to the two side support rods 5 respectively. The movable rod 7 passes through the transformer box 1 and is slidably connected to the transformer box 1. A spring buffer structure is provided at the connection between the movable rod 7 and the mounting block 51. When the anti-collision bracket is hit from the side, the anti-collision bracket will transmit the force to the side support rod 5 through the mounting block 51. The side support rod 5 moves closer to the transformer box 1 and pushes the movable rod 7 to slide along the inner wall of the transformer box 1. As the movable rod 7 slides, the spring buffer structure will contract to absorb the impact force acting on the mounting block 51, thereby improving the anti-collision bracket's impact resistance and further protecting the transformer box 1 and the heat dissipation fins 3.
[0025] It should be noted that the mounting blocks 51 are arranged at the four corners of the left and right end surfaces of the transformer box 1, and each mounting block 51 surrounds the heat sink fins 3. The mounting blocks 51 cooperate with the movable rods 7 to protect the heat sink fins 3 from the sides. At the same time, the anti-collision brackets installed on the mounting blocks 51 can fully cover the heat sink fins 3, thereby enhancing the protection of the heat sink fins 3.
[0026] Regarding the anti-collision bracket: The anti-collision bracket includes a cross-shaped protective rod 4 composed of two cross-arranged rods, which are fixed to each other by welding. The four ends of the cross-shaped protective rod 4 are provided with elbow connecting sections 41, which are fixedly connected to the cross-shaped protective rod 4. Each elbow connecting section 41 is detachably connected to each mounting block 51. When a collision occurs on both sides of the transformer box 1, the cross-shaped protective rod 4 connected to the side support rod 5 will first come into contact with the colliding object. The cross-arranged rods can ensure that the heat dissipation fins 3 are effectively protected while not affecting the circulation of airflow on both sides of the transformer box 1, ensuring that the heat dissipation fins 3 can dissipate heat normally.
[0027] Specifically, the elbow connecting section 41 is provided with a threaded hole 42, into which a fixing bolt 8 is mounted. The fixing bolt 8 passes through the elbow connecting section 41 and is threadedly engaged with a threaded groove 53 provided on the outside of the mounting block 51. The threaded groove 53 is provided on the side of the elbow connecting section 41 facing away from the transformer box 1. The elbow connecting section 41 is fixed to the mounting block 51 via a bolted connection. To remove the cross-shaped protective bar 4 from the mounting block 51, the fixing bolt 8 mounted in the threaded hole 42 is unscrewed from the threaded groove 53 provided on the outside of the mounting block 51.
[0028] Since the elbow connecting section 41 and the mounting block 51 are in point-to-point contact, the connection between the elbow connecting section 41 and the mounting block 51 is easily disconnected when the cross-shaped protective rod 4 is impacted from its side. In a preferred embodiment, a slot 52 is provided on the side of the mounting block 51 away from the transformer box 1. The slot 52 surrounds the threaded groove 53. The diameter of the slot 52 is larger than that of the threaded groove 53. The slot 52 is plugged into the elbow connecting section 41. During assembly, the elbow connecting section 41 is inserted into the slot 52 on the outside of the mounting block 51, and the fixing bolt 8 in the threaded hole 42 is screwed into the threaded groove 53 in the slot 52. This plug-in fit can improve the structural strength of the connection between the elbow connecting section 41 and the mounting block 51.
[0029] Regarding the spring buffer structure: the spring buffer structure includes a spring 6, which is sleeved on both ends of the movable rod 7. A damping ring 61 is fixedly connected to each end of the spring 6. The damping ring 61 is slidably connected to the movable rod 7. One of the damping rings 61 is fixedly connected to the transformer box 1, and the other damping ring 61 is fixedly connected to the mounting block 51. When the cross-shaped protective rod 4 pushes the side support rod 5 toward the transformer box 1, the mounting block 51 will push the movable rod 7, the distance between the two damping rings 61 will decrease, the spring 6 will contract, and the spring 6 at the other end of the movable rod 7 will expand. The spring 6 reduces the impact on the cross-shaped protective rod 4 and the side support rod 5 through elastic deformation and the damping friction between the damping ring 61 and the movable rod 7, thereby improving the impact resistance of the cross-shaped protective rod 4 and the side support rod 5.
[0030] The transformer box 1 is provided with a support rib 2 at the lower end, which is fixedly connected to the transformer box 1. The support rib 2 at the lower end of the transformer box 1 is used to support the transformer box 1. The support rib 2 can fix the transformer box 1 in the transformer station by bolt connection.
[0031] The working principle of this application: the anti-collision bracket is fixed to the side support rod 5 through the mounting block 51. When the two sides of the transformer box 1 collide, the anti-collision bracket will first contact the impact object from both sides of the transformer box 1. The anti-collision bracket transmits the force to the side support rod 5 through the mounting block 51. The side support rod 5 moves closer to the transformer box 1 and pushes the movable rod 7 to slide along the inner wall of the transformer box 1. While the movable rod 7 slides, the spring buffer structure will contract to absorb the impact force acting on the mounting block 51, thereby improving the impact resistance of the anti-collision bracket and further protecting the transformer box 1 and the heat dissipation fins 3. The detachable connection method of the anti-collision bracket makes it convenient for staff to replace damaged anti-collision brackets, which is convenient and practical.
[0032] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. 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 an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0033] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.
Claims
1. A protective transformer, comprising a transformer box (1), wherein heat dissipation fins (3) are provided on both sides of the transformer box (1), characterized in that: An anti-collision bracket and two side support rods (5) are provided on the side of the heat dissipation fin (3) away from the transformer box (1), and the two side support rods (5) are respectively arranged on the front and rear sides of the heat dissipation fin (3), and the upper and lower ends of the side support rods (5) are provided with mounting blocks (51), and the mounting blocks (51) are fixedly connected to the side support rods (5), and the anti-collision bracket is detachably connected to the side of the mounting block (51) away from the transformer box (1); A movable rod (7) is provided between two adjacent side support rods (5) on the left and right sides. Both ends of the movable rod (7) are fixedly connected to the two side support rods (5) respectively. The movable rod (7) passes through the transformer box (1) and is slidably connected to the transformer box (1). A spring buffer structure is provided at the connection between the movable rod (7) and the mounting block (51).
2. A protective transformer according to claim 1, characterized in that: Each of the mounting blocks (51) is respectively arranged on the four corners of the left and right end surfaces of the transformer box (1), and each of the mounting blocks (51) surrounds the heat dissipation fins (3).
3. The protective transformer according to claim 1, characterized in that: The anti-collision bracket comprises a cross-shaped protection rod (4) composed of two cross-arranged rods, the two rods being fixed by welding, four ends of the cross-shaped protection rod (4) are provided with curved pipe connecting sections (41), the curved pipe connecting sections (41) are fixedly connected to the cross-shaped protection rod (4), and each curved pipe connecting section (41) is detachably connected to each mounting block (51).
4. A protective transformer according to claim 3, characterized in that: A threaded hole (42) is provided on the elbow connecting section (41), a fixing bolt (8) is installed in the threaded hole (42), the fixing bolt (8) passes through the elbow connecting section (41) and is threadedly connected to a threaded groove (53) provided on the outside of the mounting block (51), and the threaded groove (53) is provided on a side of the elbow connecting section (41) away from the transformer box (1).
5. The protective transformer according to claim 4, characterized in that: A slot (52) is provided on a side of the mounting block (51) away from the transformer box (1), the slot (52) surrounds the thread groove (53), the diameter of the slot (52) is larger than the diameter of the thread groove (53), and the slot (52) is plug-fitted with the elbow connecting section (41).
6. The protective transformer according to claim 1, characterized in that: The spring buffer structure comprises a spring (6), the spring (6) being sleeved on both ends of the movable rod (7), a damping ring (61) being fixedly connected to each end of the spring (6), the damping ring (61) being slidably connected to the movable rod (7), one of the damping rings (61) being fixedly connected to the transformer box (1), and the other damping ring (61) being fixedly connected to the mounting block (51).
7. The protective transformer according to claim 1, characterized in that: The lower end of the transformer box (1) is provided with a support rib (2), and the support rib (2) is fixedly connected to the transformer box (1).