A protection device for a storage transformer

Abstract

This application discloses a protection device for an energy storage transformer, belonging to the field of energy storage equipment protection technology. It includes a cabinet with a left and right door rotatably mounted inside. Several ventilation holes are symmetrically arranged on both sides of the cabinet, divided into two symmetrical groups. A baffle groove and a return flow groove are provided inside the cabinet corresponding to each group of ventilation holes. A blocking plate is slidably mounted inside the baffle groove, and several through holes are provided outside the blocking plate. This application achieves a dynamic balance between ventilation and dust prevention through the cooperation of the blocking plate, rotating column, spring components, and return flow groove. This satisfies heat dissipation requirements while preventing sand and dust from entering the cabinet and adhering to the transformer components, reducing problems such as short circuits and component aging caused by sand and dust. It also eliminates the need for frequent manual cleaning of sand and dust, reducing maintenance costs. Therefore, it effectively solves the problem of sand and dust affecting the normal operation of the equipment through the ventilation holes, achieving automatic sand and dust return and discharge.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment protection technology, and more specifically, to a protection device for an energy storage transformer. Background Technology

[0002] Energy storage transformers are the core power equipment that enables the exchange of electrical energy between energy storage systems and the power grid (or load). Essentially, they are specialized transformers designed to optimize the voltage transformation function of conventional transformers for the special characteristics of energy storage scenarios (such as frequent charging and discharging, large current fluctuations, and the need to adapt to different energy storage media).

[0003] In sandy environments (such as photovoltaic / wind power energy storage stations on the edge of deserts in Northwest my country's Gobi Desert, independent energy storage power stations in arid Central Asia, and off-grid energy storage projects in the Sahel region of Africa), the installation of energy storage transformers needs to focus on four core requirements: "preventing sand and dust intrusion, resisting wind and sand impact, adapting to extreme temperature differences, and ensuring long-term operation and maintenance." The installation scenarios need to be combined with the special characteristics of the sandy environment, and specific implementation should be carried out from the dimensions of site selection, foundation construction, equipment fixing, protective structure, and supporting facilities.

[0004] In practice, it has been found that existing energy storage transformer protective cabinets dissipate heat generated during operation by setting ventilation holes. However, when used in windy and sandy areas (such as outdoor energy storage projects in Northwest China), due to the high frequency and strength of gusts, sand and dust are stirred up by the wind. At the same time, because the wind is mobile and disperses in all directions when it encounters an obstruction, the sand and dust impacting the sides of the protective cabinet can enter the cabinet through the ventilation holes and adhere to the circuit boards and terminals, resulting in a decrease in the insulation performance of the energy storage transformer equipment. On average, a short circuit fault occurs every two months, leading to an increased maintenance frequency. In view of this, we propose a protection device for energy storage transformers. Summary of the Invention

[0005] The purpose of this application is to provide a protection device for an energy storage transformer, which can effectively solve the problem in the prior art where wind and sand affect the normal operation of the equipment through ventilation holes, and achieve the effect of automatic wind and sand return and discharge.

[0006] This application provides a protection device for an energy storage transformer, comprising: a cabinet, a left cabinet door and a right cabinet door rotatably disposed inside the cabinet, a plurality of ventilation holes symmetrically opened on both sides of the cabinet, the plurality of ventilation holes being arranged in two symmetrical groups, a baffle groove and a return groove being opened on the inner side of the cabinet corresponding to each group of ventilation holes, a blocking plate being slidably disposed inside the baffle groove, a plurality of through holes being opened on the outer side of the blocking plate, a rotating column being fixedly disposed at the bottom of the blocking plate, the rotating column being coaxially rotatably disposed outside the fixed rod, and a spring member being symmetrically fixedly disposed at the outer end of the blocking plate away from the rotating column, the other end of the spring member being fixedly disposed inside the cabinet, above the baffle groove.

[0007] As an optional solution to the technical solution of this application, the side of the baffle groove near the ventilation hole is set at an inclined angle, the return groove is set at an inclined angle and opposite to the inclined angle of the baffle groove, and the bottom of the baffle plate is connected to the top of the return groove for automatic dust rolling off.

[0008] As an optional solution to the technical solution of this application, side baffles are fixedly provided on both sides of the blocking plate. The outer side of the side baffles is fixedly provided with the inner side of the cabinet and located on the corresponding sides of the baffle groove. The side baffles are made of PTFE membrane material.

[0009] As an optional solution to the technical solution of this application, a placement support plate is provided on the inner side of the cabinet. Fixing holes are symmetrically opened on the outer side of the placement support plate. A drive slider is fixedly provided at the bottom of the placement support plate. The drive slider is slidably disposed on the inner side of the main slide rail. The main slide rail is fixedly disposed on the inner side of the cabinet. A motor is fixedly disposed on the inner side of the main slide rail. A threaded rod is fixedly disposed at the output end of the motor. The other end of the threaded rod is rotatably disposed on the inner side of the main slide rail. A drive slider is slidably disposed on the outer side of the main slide rail. Sliding support components are provided on both sides of the bottom of the placement support plate.

[0010] As an optional solution to the technical solution of this application, the sliding support assembly includes a side slide rail, a side slider is slidably disposed on the inner side of the side slide rail, the top of the side slider is fixedly disposed with a support plate, and a limiting groove is provided on the outer side of the side slider; a ball is slidably disposed in the limiting groove, the ball is slidably disposed on the inner side of the rolling groove, and the rolling groove is opened on the inner side of the side slide rail corresponding to the ball.

[0011] As an optional solution to the technical solution in this application, magnetic strips are provided on the adjacent sides of the left and right cabinet doors for magnetic attraction and closure.

[0012] As an optional solution to the technical solution of this application, mounting plates are fixedly installed on both sides of the bottom of the cabinet, and mounting holes are symmetrically opened on the outer side of the mounting plates.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: (1) This application achieves a dynamic balance between ventilation and dust prevention through the cooperation of baffle plate, rotating column, spring parts and return groove. It not only meets the heat dissipation requirements, but also prevents sand and dust from entering the cabinet and adhering to the transformer components, reducing problems such as short circuits and component aging caused by sand and dust. At the same time, it eliminates the need for frequent manual cleaning of sand and dust, reducing maintenance costs. Therefore, it effectively solves the problem of wind and sand affecting the normal operation of the equipment through the ventilation holes, and achieves the effect of automatic return and discharge of wind and sand.

[0014] (2) This application optimizes the airflow path and improves ventilation efficiency by using the inclined design of the baffle groove. At the same time, it reduces the impact of sand and dust on the baffle plate and extends the service life of the baffle plate. Meanwhile, the reverse inclined design of the return groove accelerates the discharge of sand and dust, avoids the accumulation and blockage of sand and dust in the return groove, ensures that the sand and dust discharge channel is always unobstructed, realizes the complete automatic rolling of sand and dust without manual intervention, further reduces the maintenance workload, avoids secondary pollution caused by sand and dust residue, improves the cleanliness of the cabinet, and ensures the long-term stable operation of the transformer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the protection device for an energy storage transformer disclosed in a preferred embodiment of this application; Figure 2 This is a schematic diagram of the internal overall structure of the protection device cabinet of the energy storage transformer disclosed in a preferred embodiment of this application; Figure 3 This is a schematic diagram of the overall structure of the protection device baffle plate of the energy storage transformer disclosed in a preferred embodiment of this application; Figure 4 This is a schematic diagram of the overall structure of the support plate for the protection device of the energy storage transformer disclosed in a preferred embodiment of this application. Figure 5 This is a schematic diagram of the overall structure of the ball bearing protection device of the energy storage transformer disclosed in a preferred embodiment of this application; Explanation of the labels in the diagram: 1. Cabinet body; 11. Mounting plate; 12. Mounting hole; 13. Left cabinet door; 14. Right cabinet door; 15. Ventilation hole; 16. Baffle groove; 17. Return groove; 18. Fixed rod; 2. Baffle plate; 21. Through hole; 22. Rotary ring column; 23. Spring component; 24. Side baffle; 3. Placement support plate; 31. Fixing hole; 32. Drive slider; 33. Main slide rail; 34. Motor; 35. Threaded rod; 36. Side slider; 37. Side slide rail; 38. Roller groove; 39. Ball bearing. Detailed Implementation

[0016] The present application will be further described in detail below with reference to the accompanying drawings.

[0017] Reference Figure 1 - Figure 5 This application discloses a protection device for an energy storage transformer, including a cabinet 1. The cabinet 1 has a left cabinet door 13 and a right cabinet door 14 rotatably arranged inside. Several ventilation holes 15 are symmetrically opened on both sides of the cabinet 1. The ventilation holes 15 are arranged in two groups. A baffle groove 16 and a return groove 17 are opened on the inner side of the cabinet 1 corresponding to each group of ventilation holes 15. A blocking plate 2 is slidably arranged inside the baffle groove 16. Several through holes 21 are opened on the outer side of the blocking plate 2. A rotating column 22 is fixedly arranged at the bottom of the blocking plate 2. The rotating column 22 is coaxially rotatably arranged outside the fixed rod 18. A spring member 23 is symmetrically fixedly arranged at the outer end of the blocking plate 2 away from the rotating column 22. The other end of the spring member 23 is fixedly arranged inside the cabinet 1, above the baffle groove 16.

[0018] When used in windy and sandy areas, the cabinet 1, along with the left cabinet door 13 and the right cabinet door 14, firstly provides a closed and protected space for the internal energy storage transformer. Simultaneously, several ventilation holes 15 symmetrically arranged on both sides of the cabinet 1 allow outside cold air to enter the cabinet 1 through one ventilation hole 15, exchange heat with the hot air generated by the transformer, and then exit through the other ventilation hole 15, achieving air circulation inside the cabinet 1, reducing the transformer's operating temperature, and achieving a cooling effect. Furthermore, when outside air carrying sand and dust enters through the ventilation holes 15, the through-holes on the outer side of the baffle plate 2... 21 allows air to pass through while blocking sand and dust. Under the action of wind, the blocking plate 2 rotates slightly around the fixed rod 18 via the rotating column 22. The spring 23 is stretched. At the same time, under the action of the rebound force of the spring 23, the blocking plate 2 can reciprocate around the fixed rod 18, thereby pushing away the sand and dust blown onto the blocking plate 2. Under its own gravity, the sand and dust are directly discharged from the cabinet 1 along the return channel 17, preventing sand and dust from falling into the cabinet 1 and affecting the operation of the electronic components of the transformer equipment, reducing the average number of maintenance and troubleshooting, and improving the use effect.

[0019] Reference Figure 2 The side of the baffle 16 near the ventilation hole 15 is set at an inclined angle, and the return channel 17 is set at an inclined angle, which is opposite to the inclined angle of the baffle 16. The bottom of the baffle plate 2 is connected to the top of the return channel 17 for automatic dust rolling off.

[0020] Since the side of the baffle groove 16 near the ventilation hole 15 is set at an inclined angle, when outside air carrying sand and dust enters through the ventilation hole 15, the inclined baffle groove 16 can guide the airflow to flow more smoothly to the through hole 21 of the baffle plate 2, while blocking some of the sand and dust, reducing the direct impact of sand and dust on the baffle plate 2. After the sand and dust on the baffle plate 2 are pushed away, the sand and dust will slide down the baffle plate 2 to the return groove 17. Due to the inclined design of the return groove 17, the sand and dust can quickly and automatically roll out of the cabinet 1 under the action of gravity in the inclined direction without the need for additional power drive.

[0021] Reference Figure 3 Side baffles 24 are fixedly installed on both sides of the baffle plate 2. The outer side of the side baffles 24 is fixedly installed with the inner side of the cabinet 1 and is located on the corresponding sides of the baffle groove 16. The side baffles 24 are made of PTFE membrane material.

[0022] During the rotation of the blocking plate 2 around the rotating column 22, the side baffle 24 can deform with the movement of the blocking plate 2, always fitting the gap between the blocking plate 2 and the side wall of the grid groove 16, preventing sand and dust from entering the cabinet 1 from the gap between the sides of the blocking plate 2 and the grid groove 16. At the same time, the PTFE membrane material has good air permeability and will not hinder the flow of air between the inside of the cabinet 1 and the outside, thus not affecting the ventilation and heat dissipation effect.

[0023] Reference Figure 4 The cabinet 1 has a placement support plate 3 on its inner side. The placement support plate 3 has symmetrical fixing holes 31 on its outer side. The bottom of the placement support plate 3 is fixedly equipped with a drive slider 32. The drive slider 32 is slidably mounted inside the main slide rail 33. The main slide rail 33 is fixedly mounted inside the cabinet 1. The main slide rail 33 is fixedly mounted inside the main slide rail 33. The output end of the motor 34 is fixedly equipped with a threaded rod 35. The other end of the threaded rod 35 is rotatably mounted inside the main slide rail 33. The drive slider 32 is slidably mounted outside the main slide rail 33. The bottom of the placement support plate 3 has sliding support components on both sides.

[0024] When installing or repairing transformer equipment, start motor 34. The output end of motor 34 drives threaded rod 35 to rotate, thereby driving drive slider 32 to slide linearly along main slide rail 33, and then driving placement support plate 3 to move synchronously to the outside of mobile cabinet 1. Then the transformer can be placed on cabinet 1, and bolts and other fasteners are used to fix the transformer to placement support plate 3 through fixing holes 31. After installation or repair is completed, start motor 34 again to drive placement support plate 3 to move the equipment placed on it back into cabinet 1. During this process, the sliding support components on both sides of the bottom of placement support plate 3 provide auxiliary support and sliding assistance when placement support plate 3 moves, to prevent placement support plate 3 from tilting or jamming due to excessive weight of transformer.

[0025] Reference Figure 5The sliding support assembly includes a side slide rail 37, a side slider 36 is slidably disposed inside the side slide rail 37, the top of the side slider 36 is fixedly disposed with the support plate 3, and a limiting groove is provided on the outer side of the side slider 36; a ball bearing 39 is slidably disposed inside the limiting groove, and the ball bearing 39 is slidably disposed inside the rolling groove 38, and the rolling groove 38 is opened inside the side slide rail 37 corresponding to the ball bearing 39.

[0026] When the support plate 3 moves, the side slider 36 slides synchronously along the side slide rail 37, providing support for both sides of the support plate 3 and preventing the support plate 3 from tilting due to excessive force on one side. At the same time, a ball bearing 39 is slidably disposed in the limiting groove on the outer side of the side slider 36. The ball bearing 39 is slidably disposed in the rolling groove 38. The rolling groove 38 corresponds to the ball bearing 39 being disposed on the inner side of the side slide rail 37. During the sliding process of the side slider 36 along the side slide rail 37, the ball bearing 39 rolls between the limiting groove and the rolling groove 38, converting the sliding friction between the side slider 36 and the side slide rail 37 into rolling friction, thereby reducing sliding resistance.

[0027] Referring to Figures 1 and 2, magnetic strips are installed on the adjacent sides of the left cabinet door 13 and the right cabinet door 14 for magnetic attraction and closure.

[0028] When the left cabinet door 13 and the right cabinet door 14 are closed, the magnetic strips on both sides attract each other and create a magnetic attraction, so that the left cabinet door 13 and the right cabinet door 14 fit tightly together, eliminating the gaps between the cabinet doors and forming a complete closed structure to prevent external dust, rainwater, insects and other things from entering the cabinet body 1 through the gaps in the cabinet doors.

[0029] Referring to Figures 1 and 2, mounting plates 11 are fixedly installed on both sides of the bottom of the cabinet 1, and mounting holes 12 are symmetrically opened on the outer side of the mounting plates 11.

[0030] The mounting plates 11 fixed on both sides of the bottom of the cabinet 1 provide support and connection structure for the installation of the cabinet 1. During installation, the mounting plates 11 are attached to the preset installation base such as the ground or bracket. Bolts, screws and other fasteners are inserted through the mounting holes 12 symmetrically opened on the outer side of the mounting plates 11 to firmly connect the mounting plates 11 to the installation base, thereby realizing the fixed installation of the cabinet 1 and preventing the cabinet 1 from shifting or tipping over during use.

[0031] In summary, when the energy storage transformer protection device disclosed in this application is used in windy and sandy areas, it first provides a closed protective space for the internal energy storage transformer through the cabinet 1, the left cabinet door 13, and the right cabinet door 14. Simultaneously, several ventilation holes 15 symmetrically arranged in two groups on both sides of the cabinet 1 allow outside cold air to enter the cabinet 1 through one ventilation hole 15, exchange heat with the hot air generated by the transformer, and then exit through the other ventilation hole 15, achieving air circulation inside the cabinet 1, reducing the transformer's operating temperature, and achieving a cooling effect. At the same time, when outside air carrying sand and dust enters through the ventilation holes 15, the through holes 21 on the outer side of the baffle plate 2 allow air to pass through while blocking the sand and dust. Under the influence of wind... The blocking plate 2 rotates slightly around the fixed rod 18 via the rotating column 22, stretching the spring 23. Simultaneously, under the rebound force of the spring 23, the blocking plate 2 reciprocates around the fixed rod 18, thus pushing away the sand and dust blown onto it. Under its own gravity, the dust is directly discharged from the cabinet 1 along the return channel 17, preventing sand and dust from falling into the cabinet 1 and affecting the operation of the transformer's electronic components. This reduces the average number of maintenance checks and improves performance. Since the side of the baffle groove 16 closest to the ventilation hole 15 is angled, when outside air carrying sand and dust enters through the ventilation hole 15, the angled baffle groove 16 guides the airflow more smoothly towards the through hole 21 of the blocking plate 2, while simultaneously blocking some of the sand and dust. To reduce the direct impact of sand and dust on the barrier plate 2, after the sand and dust on the barrier plate 2 are pushed away, the sand and dust will slide down the barrier plate 2 to the return channel 17. Due to the inclined design of the return channel 17, the sand and dust can quickly and automatically roll out of the cabinet 1 under the action of gravity, without the need for additional power. During the rotation of the barrier plate 2 around the ring column 22, the side baffle membrane 24 can deform with the movement of the barrier plate 2, always fitting the gap between the barrier plate 2 and the side wall of the baffle channel 16, preventing sand and dust from entering the cabinet 1 from the gap between the sides of the barrier plate 2 and the baffle channel 16. At the same time, the PTFE membrane material has good air permeability and will not hinder the circulation of air inside the cabinet 1 to the outside, and will not affect the ventilation and heat dissipation effect. When installing and maintaining transformer equipment, start the motor 34, and the output end of the motor 34 The threaded rod 35 rotates, causing the drive slider 32 to slide linearly along the main slide rail 33. This, in turn, moves the placement support plate 3 synchronously to the outside of the movable cabinet 1. The transformer can then be placed on the cabinet 1 and secured to the placement support plate 3 using bolts or other fasteners through the fixing holes 31. After installation or maintenance, the motor 34 is started to drive the placement support plate 3, moving the equipment placed on it back into the cabinet 1. During this process, the sliding support components on both sides of the bottom of the placement support plate 3 provide auxiliary support and sliding assistance as the plate moves, preventing it from tilting or jamming due to excessive transformer weight. As the placement support plate 3 moves, the side slider 36 slides synchronously along the side slide rail 37, providing support to both sides of the plate.To prevent the support plate 3 from tilting due to excessive force on one side, a ball bearing 39 is slidably disposed within a limiting groove on the outer side of the side slider 36. The ball bearing 39 is slidably disposed within a rolling groove 38, with the corresponding ball bearing 39 located inside the side slide rail 37. As the side slider 36 slides along the side slide rail 37, the ball bearing 39 rolls between the limiting groove and the rolling groove 38, converting the sliding friction between the side slider 36 and the side slide rail 37 into rolling friction, reducing sliding resistance. When the left cabinet door 13 and the right cabinet door 14 are closed, the magnetic strips on both sides attract each other, creating a magnetic attraction that keeps the left cabinet door 13 and the right cabinet door 14 closed. 4. A tight fit eliminates gaps between cabinet doors, forming a complete sealed structure to prevent external dust, rainwater, insects, etc., from entering the cabinet 1 through the gaps. The mounting plates 11 fixed to both sides of the bottom of cabinet 1 provide support and connection for its installation. During installation, the mounting plates 11 are attached to a pre-set installation base, such as the ground or a bracket. Bolts, screws, and other fasteners are inserted through the symmetrically opened mounting holes 12 on the outer side of the mounting plates 11 to firmly connect them to the installation base, thus achieving a fixed installation of cabinet 1 and preventing displacement or tipping during use.

Claims

1. A protection device for an energy storage transformer, comprising a cabinet (1), characterized in that: The cabinet (1) has a left cabinet door (13) and a right cabinet door (14) rotatably arranged on the inside. Several ventilation holes (15) are symmetrically opened on both sides of the cabinet (1). The ventilation holes (15) are arranged in two groups symmetrically. The cabinet (1) has a baffle groove (16) and a return groove (17) for each group of ventilation holes (15) on the inside. A baffle plate (2) is slidably arranged on the inside of the baffle groove (16). Several through holes (21) are opened on the outside of the baffle plate (2). A rotating column (22) is fixedly arranged at the bottom of the baffle plate (2). The rotating column (22) is rotatably arranged on the outside of the fixed rod (18) on the outside of the baffle plate (2). A spring (23) is symmetrically fixedly arranged at the end of the baffle plate (2) away from the rotating column (22). The other end of the spring (23) is fixedly arranged on the inside of the cabinet (1) above the baffle groove (16).

2. The protection device for the energy storage transformer according to claim 1, characterized in that: The side of the baffle groove (16) near the ventilation hole (15) is set at an inclined angle. The return groove (17) is set at an inclined angle and is opposite to the inclined angle of the baffle groove (16). The bottom of the baffle plate (2) is connected to the top of the return groove (17) for automatic dust rolling off.

3. The protection device for the energy storage transformer according to claim 1, characterized in that: Side baffles (24) are fixedly installed on both sides of the baffle plate (2). The outer side of the side baffles (24) is fixedly installed on the inner side of the cabinet (1) and located on the corresponding sides of the baffle groove (16). The side baffles (24) are made of PTFE membrane material.

4. The protection device for the energy storage transformer according to claim 1, characterized in that: The cabinet (1) is provided with a placement support plate (3) on the inner side. The placement support plate (3) is provided with symmetrical fixing holes (31) on the outer side. The bottom of the placement support plate (3) is fixedly provided with a drive slider (32). The drive slider (32) is slidably disposed on the inner side of the main slide rail (33). The main slide rail (33) is fixedly disposed on the inner side of the cabinet (1). The inner side of the main slide rail (33) is fixedly provided with a motor (34). The output end of the motor (34) is fixedly provided with a threaded rod (35). The other end of the threaded rod (35) is rotatably disposed on the inner side of the main slide rail (33). The drive slider (32) is slidably disposed on the outer side of the main slide rail (33). The bottom sides of the placement support plate (3) are provided with sliding support components.

5. The protection device for the energy storage transformer according to claim 4, characterized in that: The sliding support assembly includes a side slide rail (37), a side slider (36) is slidably disposed inside the side slide rail (37), the top of the side slider (36) is fixedly disposed with the support plate (3), and a limiting groove is provided on the outer side of the side slider (36); a ball (39) is slidably disposed inside the limiting groove, and the ball (39) is slidably disposed inside the rolling groove (38), and the rolling groove (38) is opened inside the side slide rail (37) corresponding to the ball (39).

6. The protection device for the energy storage transformer according to claim 1, characterized in that: The left cabinet door (13) and the right cabinet door (14) are each equipped with a magnetic strip on the side closest to each other for magnetic attraction and sealing.

7. The protection device for the energy storage transformer according to claim 1, characterized in that: The cabinet (1) has mounting plates (11) fixedly installed on both sides of the bottom, and mounting holes (12) are symmetrically opened on the outer side of the mounting plates (11).

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