A safety protection structure for a transformer rectifier
By combining a high-strength steel protective shell, active heat dissipation, and electrical protection mechanisms, the aging and damage problems of transformer rectifiers caused by heat accumulation and electrical anomalies are solved, achieving a stable and safe operating environment and improving the service life and safety of the rectifier.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN PURNS ELECTRONIC TECHNOLOGY CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-31
AI Technical Summary
During operation, the heat buildup in transformer rectifiers accelerates component aging. The lack of electrical protection makes them susceptible to damage under abnormal conditions. Furthermore, the lack of effective mechanical protection and heat dissipation measures affects their stability and lifespan.
The protective steel shell is made of high-strength steel and combined with active heat dissipation and electrical protection mechanisms, including symmetrically arranged cooling fans, temperature sensors and circuit breakers, to achieve mechanical protection, active heat dissipation and electrical protection.
It effectively resists external impacts, prevents dust intrusion, quickly dissipates heat, and promptly cuts off the circuit, thereby improving the stability and safety of the rectifier, reducing the risk of failure, and extending its service life.
Smart Images
Figure CN224583058U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer rectifier protection technology, specifically a safety protection structure for transformer rectifiers. Background Technology
[0002] Transformer rectifiers are widely used in power conversion and equipment power supply, and their stable operation is crucial to the entire electrical system. However, in actual operation, transformer rectifiers generate heat due to the operation of their electrical components. If this heat cannot be dissipated in time, it can lead to accelerated component aging, performance degradation, and even malfunctions. Furthermore, the lack of effective electrical protection means that in abnormal situations such as overcurrent or short circuits, the circuit cannot be quickly cut off, which can damage the rectifier and related equipment. External physical impacts and dust can also affect the rectifier's lifespan and stability. Therefore, a safety protection structure integrating mechanical protection, active heat dissipation, and electrical protection is needed. Utility Model Content
[0003] (a) Technical problems to be solved.
[0004] To address the shortcomings of existing technologies, this utility model provides a safety protection structure for a transformer rectifier, solving the problems mentioned in the background art.
[0005] (ii) Technical solution.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety protection structure for a transformer rectifier, comprising an external mechanical protection mechanism, an active heat dissipation mechanism, and an electrical protection mechanism.
[0007] External mechanical protection mechanism: The outer mechanical protection mechanism's protective steel shell is made of high-strength steel, providing a solid physical protective barrier for the transformer rectifier, resisting external impacts and collisions, and reducing the entry of dust and debris. The mounting bases on the lower part of the outer wall at the four corners of the protective steel shell, along with L-shaped mounting holes, facilitate precise and stable assembly with external mounting surfaces (such as equipment frames, mounting plates inside distribution boxes, etc.). During installation, mounting bolts can be adapted through different directions of the L-shaped mounting holes, facilitating installation positioning and adjustment. The rectifier mounting bracket located at the midpoint of the front and rear ends of the lower inner wall of the protective steel shell is used to support and fix the transformer rectifier body. The oblong holes on the rectifier mounting bracket allow for flexible adjustment of the rectifier installation position by adjusting the position of the fasteners within the oblong holes according to actual installation requirements (such as rectifier size deviation, compatibility with other components, etc.), ensuring a firm installation and a good fit to the internal space of the protective steel shell. The top through-slot on the inner top wall of the protective steel shell is used to install the fan mount of the active cooling mechanism, the heat dissipation holes on the inner side wall are used for auxiliary heat dissipation, and the side through-slot is used to install the connector of the electrical protection mechanism. The layout of each structure is reasonable, ensuring both protection and providing space for heat dissipation and electrical connections.
[0008] Active cooling mechanism: The active cooling mechanism's fan mount is fixed within the top through slot, providing a mounting base for the cooling fan and temperature sensor. Two cooling fans are symmetrically arranged within the fan mount, accelerating airflow within the protective steel casing and rapidly dissipating the heat generated by the rectifier. Temperature sensors located at the center of both ends of the fan mount can monitor the temperature in different areas within the protective steel casing in real time (due to potential differences in heat generation at different parts of the rectifier, dual temperature sensors provide more comprehensive detection). These temperature sensors can transmit the detected temperature data to an external control unit (if a matching intelligent control system is available) or directly provide a basis for adjusting the cooling fan speed. The connection interface at the top center of the fan mount is used to power the cooling fan and temperature sensor, and to transmit signals. It can connect to external power and signal lines, enabling electrical interaction between the active cooling mechanism and external systems. For example, it can receive intelligent control commands through the connection interface, precisely controlling the cooling fan's start / stop and speed adjustment based on the actual heat generation of the rectifier (feedback from the temperature sensors), achieving efficient heat dissipation and energy saving.
[0009] Electrical protection mechanism: The connector of the electrical protection mechanism is fixedly snapped into the side through slot, acting as an electrical connection bridge. Its rectifier connection port is used to connect to the electrical output / input terminal of the transformer rectifier, realizing electrical conduction between the rectifier and the external circuit. The circuit breaker at one end of the connector is a key protective component for circuit safety. When an overcurrent occurs in the circuit (such as a short circuit, abnormal increase in load, etc.), the circuit breaker can quickly disconnect the circuit according to its own overcurrent protection mechanism to prevent excessive current from continuously passing through the rectifier and related circuits, and prevent components from being damaged due to overcurrent. The overcurrent monitor electrically connected to the top of the circuit breaker can monitor the current in the circuit in real time and feed back the monitored current data to the relevant control unit (such as the rectifier control system, external monitoring equipment). Once the current is detected to exceed the set safety value, it can assist the circuit breaker to respond more quickly. It also makes it easier for maintenance personnel to monitor the circuit current status in real time and promptly identify potential electrical safety hazards. The external connection port at one end of the circuit breaker is used to connect external components required for the operation of the rectifier (such as power supply lines, load lines, etc.), so that the rectifier can be integrated into the entire electrical system to realize functions such as power conversion and power supply. In addition, the standardized connection of the external connection port also facilitates the organization and maintenance of electrical lines and reduces the risk of faults caused by messy lines.
[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the protective steel shell is made of high-strength steel to construct a solid physical protective layer, which effectively resists external impacts and collisions and reduces the risk of damage to the rectifier due to external forces; at the same time, it blocks the intrusion of dust and debris, keeps the inside of the rectifier clean, delays the aging of components, and ensures long-term stable operation. The mounting base is equipped with L-shaped mounting holes to accommodate mounting bolts in different directions, which facilitates precise assembly with external structures such as equipment frames and distribution boxes, making installation positioning and adjustment more flexible and improving installation convenience and structural stability.
[0011] 2. In this utility model, the symmetrical layout of the dual cooling fans accelerates the air circulation inside the protective steel shell, and the heat dissipation holes assist in heat dissipation, efficiently dissipating the heat of the rectifier's operation; the temperature sensor monitors the temperature of different areas inside in real time, and combined with the connection interface, it can realize intelligent control (such as automatically adjusting the fan speed according to the temperature), dissipating heat as needed, ensuring the heat dissipation effect, and saving energy and reducing consumption.
[0012] 3. In this utility model, the circuit breaker and the overcurrent monitor work together. The overcurrent monitor monitors the circuit current in real time. Once the threshold is exceeded, the circuit breaker quickly cuts off the circuit to avoid overcurrent damage to the rectifier and related equipment. The dual protection mechanism improves the safety of the electrical system and reduces the cost of fault repair and downtime risk. Attached Figure Description
[0013] Figure 1 This is a perspective view of the entire utility model; Figure 2 This is a perspective view of the outer mechanical protection mechanism of this utility model; Figure 3 This is a perspective view of the active heat dissipation mechanism of this utility model; Figure 4 This is a perspective view of the electrical protection mechanism of this utility model.
[0014] In the diagram: 1. External mechanical protection mechanism; 2. Active heat dissipation mechanism; 3. Electrical protection mechanism; 11. Protective steel shell; 12. Top through slot; 13. Side through slot; 14. Heat dissipation hole; 15. Mounting base; 16. L-shaped mounting hole; 17. Rectifier mounting bracket; 18. Waist-shaped hole; 21. Fan base; 22. Cooling fan; 23. Connection interface; 24. Temperature sensor; 31. Connector; 32. Rectifier connection port; 33. Circuit breaker; 34. Overcurrent monitor; 35. External connection port. Detailed Implementation
[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0016] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0018] Please see Figures 1-4 In this embodiment of the utility model, a safety protection structure for a transformer rectifier includes an outer mechanical protection mechanism 1, an active heat dissipation mechanism 2, and an electrical protection mechanism 3.
[0019] Structure and function of the outer mechanical protection mechanism 1: The protective steel shell 11 of the outer mechanical protection mechanism 1 provides physical protection for the rectifier. Mounting seats 15 are fixedly connected to the lower part of the outer wall at each of the four corners of the protective steel shell 11. L-shaped mounting holes 16 are provided between the upper and lower side walls of the mounting seats 15. During installation, mounting bolts of different directions can be accommodated using the L-shaped mounting holes 16 to securely install the protective steel shell 11 onto an external mounting surface, such as an equipment frame. A rectifier mounting bracket 17 is fixedly connected to the middle of the front and rear ends of the lower part of the inner side wall of the protective steel shell 11. The rectifier mounting bracket 17 is used to support the transformer rectifier, and its upper and lower side walls are symmetrical. Two oblong holes 18 are provided. When installing the rectifier, the installation position of the rectifier in the protective steel shell 11 can be adjusted by using the oblong holes 18 and fasteners (such as bolts and nuts) to adapt to different sizes of rectifiers or adjust the relative position with other components. The top wall of the protective steel shell 11 is provided with a top through groove 12, and multiple heat dissipation holes 14 are provided at both ends of the inner side wall. Side through grooves 13 are provided at the middle of the lower part of both ends of the inner side wall. The top through groove 12 is used to install the fan seat 21 of the active heat dissipation mechanism 2. The heat dissipation holes 14 are used to assist in the dissipation of internal heat. The side through groove 13 is used to install the connector 31 of the electrical protection mechanism 3.
[0020] The structure and function of the active cooling mechanism 2: The fan base 21 of the active cooling mechanism 2 is fixedly installed in the top through slot 12. Two cooling fans 22 are symmetrically arranged in the fan base 21. When the cooling fans 22 are working, they accelerate the airflow inside the protective steel shell 11 and exhaust the heat generated by the rectifier through the heat dissipation holes 14, etc. A temperature sensor 24 is fixedly installed at the middle of each end of the fan base 21. The temperature sensor 24 detects the internal temperature of the protective steel shell 11 in real time and can transmit the temperature data to an external control unit (if any) for intelligent control of the operation of the cooling fans 22. A connection interface 23 is provided at the middle of the top of the fan base 21. The connection interface 23 is used to supply power to the cooling fans 22 and the temperature sensor 24 and transmit signals. For example, it can connect an external power cord to supply power to them and connect a signal line to transmit the data detected by the temperature sensor 24, so as to realize the intelligent control of the cooling system, such as automatically adjusting the speed of the cooling fans 22 according to the temperature.
[0021] Structure and function of electrical protection mechanism 3: The connector 31 of electrical protection mechanism 3 is fixedly installed in the side through slot 13. Each of the two connectors 31 has a rectifier connection port 32 at one end facing each other, which is used to connect to the electrical interface of the transformer rectifier to realize the electrical conduction between the rectifier and the external circuit. Each of the two connectors 31 has a circuit breaker 33 fixedly connected at one end away from each other. When an overcurrent occurs in the circuit (such as a short circuit), the circuit breaker 33 can automatically cut off the circuit to protect the rectifier and related equipment. The top of the circuit breaker 33 is electrically connected to an overcurrent monitor 34. The overcurrent monitor 34 monitors the circuit current in real time. Once the current exceeds the safety threshold, it can assist the circuit breaker 33 to act quickly and feed back the overcurrent information to the relevant monitoring equipment. Each of the two circuit breakers 33 has an external connection port 35 at one end away from each other, which is used to connect the external components required by the rectifier, such as power supply lines, load lines, etc., so that the rectifier can be connected to the electrical system to realize power conversion and other functions.
[0022] Working principle: During installation, the entire protective structure is fixed in a suitable position using the mounting base 15 and L-shaped mounting holes 16 of the protective steel shell 11. The transformer rectifier is installed into the protective steel shell 11 using the rectifier mounting bracket 17 and the oblong hole 18, and then fixed with fasteners after adjusting the position. For electrical connections, the rectifier is connected via the rectifier connection port 32 of the connector 31, and the external connection port 35 is connected to the external circuit. The overcurrent monitor 34 monitors the circuit current, and the circuit breaker 33 ensures overcurrent safety. During operation, the temperature sensor 24 of the active cooling mechanism 2 detects the temperature inside the protective steel shell 11, and the cooling fan 22 rotates according to the temperature (which can receive control signals through the connection interface 23) to accelerate heat dissipation. The protective steel shell 11 of the outer mechanical protection mechanism 1 resists external impacts and prevents dust, while the heat dissipation holes 14 assist in heat dissipation, thereby achieving mechanical protection, active cooling, and electrical protection for the transformer rectifier, ensuring its stable and safe operation.
[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A safety protection structure for a transformer rectifier, comprising an external mechanical protection mechanism (1), an active heat dissipation mechanism (2), and an electrical protection mechanism (3); characterized in that The outer mechanical protection mechanism (1) includes a protective steel shell (11), the inner top wall of the protective steel shell (11) is provided with a top through groove (12), the front and rear ends of the inner side wall of the protective steel shell (11) are provided with multiple heat dissipation holes (14), the lower middle part of the inner side wall of the protective steel shell (11) is provided with a side through groove (13), and a rectifier installation mechanism is provided inside the protective steel shell (11); The active heat dissipation mechanism (2) includes a fan base (21) fixedly installed in the top through slot (12) and two temperature sensors (24). The two temperature sensors (24) are respectively fixedly installed in the middle of both ends of the fan base (21). Two cooling fans (22) are symmetrically arranged in the fan base (21). The electrical protection mechanism (3) includes a connector (31) fixedly installed in the side slot (13), and each of the two connectors (31) is fixedly connected to a circuit breaker (33) at one end. The top of the circuit breaker (33) is electrically connected to an overcurrent monitor (34).
2. The safety shield structure for a transformer rectifier according to claim 1, wherein: The protective steel shell (11) has a mounting base (15) fixedly connected to the lower side of the outer wall at each of the four corners. The mounting base (15) has an L-shaped mounting hole (16) between its upper and lower side walls.
3. The safety shield structure for a transformer rectifier as claimed in claim 1, wherein: The rectifier mounting mechanism includes a rectifier mounting bracket (17) fixedly connected to the middle of the front and rear ends of the inner sidewall of the protective steel shell (11).
4. The safety shield structure for a transformer rectifier according to claim 3, wherein: The rectifier mounting bracket (17) has two waist-shaped holes (18) symmetrically installed between its upper and lower side walls.
5. The safety shield structure for a transformer rectifier as claimed in claim 1, wherein: A connection interface (23) is provided at the top center of the fan base (21).
6. The safety shield structure for a transformer rectifier as claimed in claim 1, wherein: Each of the two connectors (31) has a rectifier connection port (32) at one end facing each other.
7. The safety shield structure for a transformer rectifier as defined in claim 1 wherein: Each of the two circuit breakers (33) has an external connection port (35) at one end.