Converter transformer top safety protection device

Abstract

A converter transformer top safety protection device disclosed by the present invention comprises a transformer body, a top plate is installed at the top end of the transformer body, a protective fence mechanism is arranged at the top end of the top plate, the protective fence mechanism comprises a support member installed at the top end of the top plate, and a protection mechanism is arranged at the top end of the support member. The protective mechanism comprises a mounting frame mounted at the top end of the top plate, a plurality of rotating plates used for protection are rotationally mounted in the middle of the mounting frame, and an arc-shaped groove used for guiding water is formed in the position, close to the position between the two rotating plates, of the mounting frame. Damage to the converter transformer caused by external factors such as wind and rain, thunder and lightning and collision can be effectively resisted, in the face of wind and rain, the rotating plates are matched with the protective fences to prevent insulation materials from being affected with damp and reducing faults such as short circuits, and in the case of collision, the protective fences can bear part of impact force and protect key components of the transformer from being damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, in particular to a top safety protection device of a converter transformer. BACKGROUND

[0002] As a key equipment in high-voltage direct-current power transmission system, the converter transformer undertakes important functions such as voltage transformation, electrical isolation and AC-DC power conversion, and its safe and stable operation is crucial to the reliability of the entire power system.

[0003] The converter transformer is usually installed outdoors, and construction personnel often need to work on its top. However, the top of the converter transformer usually has an inclined surface, so the construction personnel is prone to slipping and falling, and the protection effect is not good. At the same time, the top of the converter transformer is exposed to the natural environment for a long time, and is inevitably affected by wind and rain. Rainwater can seep into the inside of the transformer, causing the insulation material to be damp, reducing the insulation performance, increasing the risk of insulation breakdown, and thus causing short circuit and other faults, affecting the normal operation of the transformer. At the same time, the transformer generates a strong magnetic field during operation, which may also cause eddy current in the metal parts of the transformer, causing additional energy loss and heating, reducing the efficiency of the transformer, and possibly accelerating the aging of the parts. SUMMARY

[0004] The purpose of the present application is to provide a top safety protection device of a converter transformer to solve the problem that rainwater seeps into the inside of the transformer, causing the insulation material to be damp, reducing the insulation performance, increasing the risk of insulation breakdown, and thus causing short circuit and other faults, affecting the normal operation of the transformer.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a top safety protection device of a converter transformer, comprising a transformer body, a top plate installed at the top end of the transformer body, a protection fence mechanism arranged at the top end of the top plate, the protection fence mechanism comprising a support installed at the top end of the top plate, a protection mechanism arranged at the top end of the support, the protection mechanism comprising a mounting bracket installed at the top end of the top plate, a plurality of rotating plates for protection rotatably installed in the middle of the mounting bracket, an arc-shaped groove for water diversion installed at a position close to the two rotating plates of the mounting bracket, a drainage groove for drainage opened on the surface of the mounting bracket close to the arc-shaped groove, and a water storage groove for cooling opened at the top end of the mounting bracket and communicating with the drainage groove.

[0006] As a preferred technical scheme of the present application, a filter screen is installed on the surface of the drainage groove close to the water storage groove, and a plurality of water guide grooves for water flow guidance are opened at the bottom end of the drainage groove close to the filter screen.

[0007] As a preferred technical scheme of the present application, the top end of the mounting frame is fixedly provided with a baffle for blocking the gap on both sides of the rotating plate, and the rotating plate is located inside the baffle.

[0008] As a preferred technical scheme of the present application, the top end of the top plate is fixedly provided with a bottom rod, the bottom rod is slidably penetrated through the bottom end of the support, and a damping spring is fixedly arranged between the bottom rod and the support.

[0009] As a preferred technical scheme of the present application, the top end of the bottom rod is fixedly provided with a sealing ring for sealing the inner cavity of the support, and the sealing ring is inserted into the inside of the support.

[0010] As a preferred technical scheme of the present application, the top end of the top plate is provided with an exhaust mechanism, the exhaust mechanism comprises a shielding frame arranged at the top end of the top plate and used for shielding the external magnetic field interference, an electric push rod is fixedly arranged at the top end of the top plate, the output end of the electric push rod is fixedly connected with one end of the shielding frame, a sealing groove is arranged at the top end of the top plate, an exhaust hole for exhausting the heat flow inside the transformer body is arranged in the inside of the sealing groove, and the bottom end of the shielding frame is inserted into the inside of the sealing groove.

[0011] As a preferred technical scheme of the present application, the top end of the top plate is fixedly provided with a limiting rod, and one side of the shielding frame is fixedly provided with a sliding sleeve which is slidably arranged on the outer surface of the limiting rod.

[0012] As a preferred technical scheme of the present application, the bottom end of the top plate is provided with an annular frame, an annular groove is arranged in the inside of the annular frame, the annular groove is communicated with an externally arranged air pump, a plurality of air injection pipes are communicated and arranged at the top end of the annular frame, the free ends of the air injection pipes are inserted into the exhaust hole, a plurality of flow guide plates for guiding the airflow are arranged in the inside of the annular frame, a filter plate is arranged in communication with the outer surface of the flow guide plate, and the inside of the filter plate is filled with carbon powder.

[0013] As a preferred technical scheme of the present application, the output end of the electric push rod is fixedly provided with a long plate, the top end of the long plate is fixedly provided with an elastic frame for supporting the rotating plate, and the free end of the elastic frame is rotatably connected with the rotating plate.

[0014] As a preferred technical scheme of the present application, the side surface of the mounting frame is fixedly provided with a protection plate for sun-shading and protection, and the top end of the protection plate is located at the bottom end of the water guide groove.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. The protective barrier mechanism of this invention has high strength and durability, and can effectively resist damage to the converter transformer caused by external factors such as wind, rain, lightning, and collisions. When facing wind and rain, the protective barrier can prevent rainwater from directly invading the inside of the transformer, avoid the insulation material from getting damp and reducing the insulation performance, and reduce the probability of short circuits and other faults. At the same time, when construction and maintenance are carried out on the top of the transformer, the top protective barrier can protect the construction personnel, thus protecting the construction personnel and the key components of the transformer from damage, ensuring the normal operation of power facilities.

[0017] 2. In the installation process of the protective railing, a damping spring is set up. When the protective railing is subjected to impacts such as the falling of heavy objects, the damping spring can play a buffering role. It works together with the protective railing to disperse and attenuate the impact force, which greatly reduces the damage caused by the impact to the transformer body. This buffering and shock absorption design extends the service life of the transformer, reduces equipment failure and maintenance costs caused by accidental impacts, and improves the stability and reliability of the power system.

[0018] 3. The multiple rotating plates installed at the top of the protective fence in this invention have a dual function. When the rotating plates are open, they allow the transformer inside the protective fence to circulate fully with the outside air, achieving good ventilation and helping the transformer dissipate heat, maintaining the equipment in a suitable temperature environment, and improving its working efficiency and service life. When the rotating plates are rotated to close the top of the protective fence, they can effectively block rainwater and dust from entering, providing reliable protection for the transformer and preventing insulation failures and poor heat dissipation caused by the accumulation of moisture and dust. This achieves a perfect balance between ventilation and protection.

[0019] 4. The arc-shaped groove installed between the two rotating plates in this invention can not only collect and drain rainwater to prevent it from affecting the transformer, but also cleverly guide some of the water inside the arc-shaped groove into the support of the guardrail. This design realizes the secondary use of rainwater. By cooling the support through the water source, the temperature of the support under long-term exposure to the sun is effectively controlled, preventing it from being damaged by high temperature. This ensures the structural stability and service life of the support, thereby improving the reliability and durability of the entire protective device.

[0020] 5. The shielding frame at the top of the top plate of this invention uses materials with magnetic shielding properties, such as silicon steel sheets and electrical iron, which can effectively isolate the magnetic field generated by the transformer, reduce its electromagnetic interference to the surrounding environment, and meet the electromagnetic compatibility requirements of modern power systems. At the same time, the material of the shielding frame emphasizes corrosion resistance and easy cleaning, which facilitates maintenance, reduces dust accumulation, keeps the transformer clean, and improves heat dissipation efficiency. In addition, the ventilation holes at the top of the transformer, combined with the exhaust effect of the air pump, can achieve rapid heat dissipation inside the transformer, further improving the heat dissipation performance of the transformer and reducing the risk of equipment failure due to overheating. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of the present application;

[0022] Figure 2 It is the side view structure schematic diagram of the present application;

[0023] Figure 3 It is the internal structure schematic diagram of the guardrail mechanism of the present application;

[0024] Figure 4 It is the structure schematic diagram of the present application in A; Figure 3

[0025] Figure 5 It is the structure schematic diagram of the present application in B;

[0026] Figure 6 It is the structure schematic diagram of the present application in C;

[0027] Figure 7 It is the structure schematic diagram of the present application in D;

[0028] Figure 8 It is the structure schematic diagram of the present application in E;

[0029] Figure 9 It is the structure schematic diagram of the present application in F;

[0030] Figure 10 It is the structure schematic diagram of the present application in G;

[0031] Figure 11 It is the structure schematic diagram of the present application in H.

[0032] In the figure: 1, transformer body; 2, top plate; 3, guard plate; 4, guardrail mechanism; 41, bottom rod; 42, sealing ring; 43, damping spring; 44, support; 5, protection mechanism; 51, mounting frame; 52, rotating plate; 53, arc-shaped groove; 54, elastic frame; 55, long plate; 56, baffle; 57, drainage groove; 58, filter screen; 59, water guide groove; 510, water storage groove; 6, exhaust mechanism; 61, shielding frame; 62, limiting rod; 63, sliding sleeve; 64, electric push rod; 65, flow guide plate; 66, filter plate; 67, sealing groove; 68, jet pipe; 69, annular frame. DETAILED DESCRIPTION

[0033] ​Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0034] Please refer to Figures 1-11 The present application provides a converter transformer top safety protection device, comprising a transformer body 1, a top plate 2 is installed at the top end of the transformer body 1, a protective fence mechanism 4 is arranged at the top end of the top plate 2, the protective fence mechanism 4 comprises a support 44 installed at the top end of the top plate 2, a protection mechanism 5 is arranged at the top end of the support 44, the protection mechanism 5 comprises a mounting bracket 51 installed at the top end of the top plate 2, a plurality of rotating plates 52 for protection are rotatably installed in the middle of the mounting bracket 51, an arc-shaped groove 53 for water guiding is installed at the position close to the two rotating plates 52 of the mounting bracket 51, a drainage groove 57 for drainage is opened on the surface close to the arc-shaped groove 53 of the mounting bracket 51, and a water storage groove 510 for cooling is opened at the top end of the mounting bracket 51 and communicates with the drainage groove 57.

[0035] Among them, the top end of the transformer body 1 is installed with the protective fence mechanism 4, because the top end of the transformer body 1 usually has an inclined surface, the protective fence mechanism 4 forms a physical barrier by continuous enclosure, so that even if a person loses his balance, he can be intercepted, avoiding falling from a high place, at the same time, there is a high-voltage contact point at the top end of the transformer body 1, the protective fence mechanism 4 prevents direct contact with the live part by physical isolation, avoiding electric shock accidents.

[0036] Among them, the top end of the transformer body 1 is installed with the protective fence mechanism 4, because the top end of the transformer body 1 usually has an inclined surface, the protective fence mechanism 4 forms a physical barrier by continuous enclosure, so that even if a person loses his balance, he can be intercepted, avoiding falling from a high place, at the same time, there is a high-voltage contact point at the top end of the transformer body 1, the protective fence mechanism 4 prevents direct contact with the live part by physical isolation, avoiding electric shock accidents.

[0037] In some embodiments, the drainage groove 57 is provided with a filter screen 58 near the surface of the water storage groove 510, and a plurality of water guide grooves 59 are arranged at the bottom end of the filter screen 58 for guiding water flow.

[0038] Wherein, when draining, the filter screen 58 can effectively filter impurities in the rainwater, ensuring the smoothness of the drainage system, avoiding poor drainage or equipment damage caused by impurity accumulation, and the water guide grooves 59 guide the filtered water flow, making the water flow more smoothly, and collecting part of the water source inside the support 44, thereby cooling the entire protective fence and ensuring the stability of the protective fence.

[0039] In some embodiments, the top end of the mounting bracket 51 is fixedly provided with a baffle 56 for plugging the gap on both sides of the rotating plate 52, and the rotating plate 52 is located inside the baffle 56.

[0040] Wherein, the baffle 56 can plug the gap on both sides of the rotating plate 52, enhancing the sealing of the protective fence, effectively blocking the rainwater and dust from entering the top area of the transformer body 1, reducing insulation failure, short circuit and other problems caused by moisture and dust, and improving the operation safety and reliability of the transformer body 1.

[0041] In some embodiments, the top end of the top plate 2 is fixedly provided with a bottom rod 41, the bottom rod 41 slidably penetrates the bottom end of the support 44, and the bottom rod 41 is fixedly provided between the one end inside the support 44 and the support 44. A damping spring 43 is fixedly provided.

[0042] Wherein, when the protective fence is impacted by a heavy object or the like, the support 44 will slide along the bottom rod 41, and the damping spring 43 will be deformed, and the impact force will be buffered by the elastic force of the spring. The buffering effect of the damping spring 43 can effectively reduce the damage to the transformer body 1 caused by external impact, protect the key components inside the transformer body 1, prolong the service life of the transformer body 1, reduce the maintenance cost and power failure risk caused by accidental impact.

[0043] In some embodiments, the top end of the bottom rod 41 is fixedly provided with a sealing ring 42 for sealing the inner cavity of the support 44, and the sealing ring 42 is inserted into the inside of the support 44.

[0044] Wherein, the sealing ring 42 can seal the inner cavity of the support 44, preventing rainwater, dust and the like from entering the inside of the support 44, ensuring the cleanliness and dryness of the inside of the support 44, avoiding corrosion and rust of the parts inside the support 44 caused by moisture and dust, improving the service life and stability of the support 44, and thus ensuring the normal operation of the entire protective fence mechanism 4.

[0045] In some embodiments, the top end of the top plate 2 is provided with an exhaust mechanism 6, which includes a shielding frame 61 mounted on the top end of the top plate 2 for shielding external magnetic field interference, an electric push rod 64 fixedly mounted on the top end of the top plate 2, the output end of the electric push rod 64 is fixedly connected with one end of the shielding frame 61, a sealing groove 67 is opened on the top end of the top plate 2, an exhaust hole for exhausting heat flow inside the transformer body 1 is opened in the inside of the sealing groove 67, and the bottom end of the shielding frame 61 is inserted into the inside of the sealing groove 67.

[0046] When exhaust and heat dissipation are needed, the electric push rod 64 pushes the shielding frame 61 to rise, exposing the exhaust hole, and cooperating with the action of the air pump, so that the airflow inside the transformer body 1 can quickly pass through the exhaust hole and be discharged, realizing the heat dissipation function; when exhaust is not needed or the magnetic field needs to be shielded, the electric push rod 64 pulls the shielding frame 61 to descend, and the bottom end of the shielding frame 61 is inserted into the sealing groove 67 to close the exhaust hole. The shielding frame 61 is made of a material with magnetic shielding performance, which can effectively shield the magnetic field generated by the transformer body 1, reduce electromagnetic interference, meet the electromagnetic compatibility requirement, and improve the operation efficiency and safety of the transformer body 1.

[0047] In some embodiments, the top end of the top plate 2 is fixedly mounted with a limiting rod 62, and one side of the shielding frame 61 is fixedly mounted with a sliding sleeve 63 which is slidingly mounted on the outer surface of the limiting rod 62.

[0048] When the electric push rod 64 pushes or pulls the shielding frame 61 to rise or descend, the sliding sleeve 63 slides along the limiting rod 62, limiting the movement track of the shielding frame 61, so that it can only move linearly along the direction of the limiting rod 62, ensuring the stability and accuracy of the shielding frame 61 rising and descending, preventing the shielding frame 61 from deviating or shaking during movement, and ensuring that the shielding frame 61 can be accurately inserted into the sealing groove 67 or raised from the sealing groove 67, improving the working reliability and safety of the exhaust mechanism 6.

[0049] In some embodiments, the bottom end of the top plate 2 is mounted with an annular frame 69, an annular groove is opened in the inside of the annular frame 69, and the annular groove is communicated with an externally mounted air pump, a plurality of air injection pipes 68 are communicated and mounted on the top end of the annular frame 69, the free ends of the air injection pipes 68 are inserted into the exhaust hole, a plurality of flow guides 65 for guiding airflow are mounted in the inside of the annular frame 69, and filter plates 66 are communicated and mounted on the outer surfaces of the flow guides 65, and the inside of the filter plates 66 is filled with carbon powder.

[0050] Wherein, when the air pump pumps gas into the annular groove, the gas is guided by the flow guide plate 65 and filtered by the filter plate 66, and then sprayed into the inside of the transformer body 1 through the air injection pipe 68, realizing the exhaust and heat dissipation of the inside of the transformer body 1. The design of the annular frame 69 and the air injection pipe 68 can uniformly spray the gas into the inside of the transformer body 1, improve the heat dissipation efficiency, and the flow guide plate 65 can optimize the airflow direction, so that the gas can better exchange heat with the inside of the transformer body 1; the filter plate 66 and the carbon powder can filter impurities and dust in the gas, keep the inside of the transformer body 1 clean, reduce the poor heat dissipation and insulation failure caused by dust accumulation, and prolong the service life of the transformer body 1.

[0051] In some embodiments, the output end of the electric push rod 64 is fixedly installed with a long plate 55, the top end of the long plate 55 is fixedly installed with an elastic frame 54 for supporting the rotating plate 52, and the free end of the elastic frame 54 is rotationally connected with the rotating plate 52.

[0052] Wherein, when the electric push rod 64 moves, the elastic frame 54 is driven to move by the long plate 55, and the elastic frame 54 can be self-adaptively adjusted according to the rotation of the rotating plate 52 to provide stable support for the rotating plate 52, ensuring the smoothness of the opening and closing of the rotating plate 52; at the same time, the elastic frame 54 has a certain elasticity, which can buffer the impact force generated in the rotation process of the rotating plate 52, reduce the damage to the rotating plate 52 and the mounting frame 51, and improve the service life and reliability of the protection mechanism 5.

[0053] In some embodiments, the side surface of the mounting frame 51 is fixedly installed with a protection plate 3 for sun protection, and the top end of the protection plate 3 is located at the bottom end of the water guide groove 59.

[0054] Wherein, the protection plate 3 can block the direct sunlight on the top of the transformer body 1, reducing the influence of solar radiation on the transformer body 1; at the same time, the top end of the protection plate 3 is located at the bottom end of the water guide groove 59, which can guide the rainwater discharged from the water guide groove 59 to the outside of the protection plate 3, avoiding the secondary splashing of rainwater on the transformer body 1, further protecting the transformer body 1, and prolonging the service life of the transformer body 1.

[0055] Working principle: first in transformer body 1 top end is equipped with the guardrail mechanism 4 and the rotating plate 52, the guardrail mechanism 4 is formed by continuous enclosure physical barrier, even if the person stumbles also can be intercepted, avoid falling from height, when the rotating plate 52 opens, can make the transformer body 1 in the inside of guardrail and outside air fully flow, realize good ventilation effect, help the transformer body 1 heat dissipation, maintain equipment in suitable temperature environment operation, improve its work efficiency and service life, while the mounting frame 51 is set between two rotating plates 52 arc-shaped recess 53 guide water, open drainage groove 57 near the surface of arc-shaped recess 53 drainage, top end is equipped with water storage tank 510 for drainage groove 57 communication for cooling, when the rotating plate 52 rotates and closes the top end of guardrail, can effectively block rain and dust into, provide reliable protection for transformer body 1, prevent the insulation fault and heat dissipation caused by moisture and dust accumulation and other problems, realize the perfect balance of ventilation and protection.

[0056] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the present application to solve the basically same technical problem and realize the basically same technical effect is covered in the protection scope of the present application.

Claims

1. A safety protection device for the top of a converter transformer, comprising a transformer body (1), characterized in that: A top plate (2) is installed on the top of the transformer body (1). A guardrail mechanism (4) is provided on the top of the top plate (2). The guardrail mechanism (4) includes a support member (44) installed on the top of the top plate (2). A protective mechanism (5) is provided on the top of the support member (44). The protective mechanism (5) includes a mounting frame (51) installed on the top of the top plate (2). Multiple rotating plates (52) for protection are rotatably installed in the middle of the mounting frame (51). An arc-shaped groove (53) for water guiding is installed on the mounting frame (51) near the position between two rotating plates (52). A drainage groove (57) for drainage is opened on the surface of the mounting frame (51) near the arc-shaped groove (53). A water storage tank (510) for cooling is opened on the top of the mounting frame (51) and communicates with the drainage groove (57).

2. The safety protection device for the top of a converter transformer according to claim 1, characterized in that: A filter screen (58) is installed on the surface of the drainage trough (57) near the water storage tank (510), and a plurality of water guiding channels (59) for guiding water flow are opened at the bottom end of the drainage trough (57) near the filter screen (58).

3. The safety protection device for the top of a converter transformer according to claim 1, characterized in that: The top of the mounting bracket (51) is fixedly fitted with a baffle (56) for sealing the gaps on both sides of the rotating plate (52), and the rotating plate (52) is located inside the baffle (56).

4. The safety protection device for the top of a converter transformer according to claim 1, characterized in that: A bottom rod (41) is fixedly installed at the top of the top plate (2). The bottom rod (41) slides through the bottom end of the support member (44). A damping spring (43) is fixedly installed between the end of the bottom rod (41) inside the support member (44) and the support member (44).

5. A safety protection device for the top of a converter transformer according to claim 4, characterized in that: The top end of the bottom rod (41) is fixedly equipped with a sealing ring (42) for sealing the inner cavity of the support member (44), and the sealing ring (42) is inserted inside the support member (44).

6. A safety protection device for the top of a converter transformer according to claim 1, characterized in that: The top of the top plate (2) is provided with an exhaust mechanism (6). The exhaust mechanism (6) includes a shielding frame (61) installed on the top of the top plate (2) for isolating external magnetic field interference. An electric push rod (64) is fixedly installed on the top of the top plate (2). The output end of the electric push rod (64) is fixedly connected to one end of the shielding frame (61). A sealing groove (67) is opened on the top of the top plate (2). An exhaust hole for exhausting the heat flow inside the transformer body (1) is opened inside the sealing groove (67). The bottom end of the shielding frame (61) is inserted into the sealing groove (67).

7. A safety protection device for the top of a converter transformer according to claim 6, characterized in that: A limiting rod (62) is fixedly installed at the top of the top plate (2), and a sliding sleeve (63) is fixedly installed on one side of the shielding frame (61). The sliding sleeve (63) is slidably installed on the outer surface of the limiting rod (62).

8. A safety protection device for the top of a converter transformer according to claim 6, characterized in that: A ring frame (69) is installed at the bottom of the top plate (2). The ring frame (69) has an annular groove inside, which is connected to an externally installed air pump. A plurality of jet pipes (68) are connected to the top of the ring frame (69). The free end of the jet pipes (68) is inserted into the exhaust port. A plurality of guide plates (65) for guiding airflow are installed inside the ring frame (69). A filter plate (66) is connected to the outer surface of the guide plate (65). The filter plate (66) is filled with carbon powder.

9. A safety protection device for the top of a converter transformer according to claim 6, characterized in that: The output end of the electric push rod (64) is fixedly mounted with a long plate (55), and the top end of the long plate (55) is fixedly mounted with an elastic frame (54) for supporting the rotating plate (52), and the free end of the elastic frame (54) is rotatably connected to the rotating plate (52).

10. A safety protection device for the top of a converter transformer according to claim 1, characterized in that: The mounting bracket (51) is fixedly mounted with a protective plate (3) for sunshade protection, and the top of the protective plate (3) is located at the bottom of the water guide channel (59).

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