Energy storage converter box with integrated dry-type transformer

Abstract

The present invention relates to the technical field of box-type substations, and mainly to an energy storage converter box-type transformer integrated with a dry-type transformer, comprising a bottom plate, a box body being mounted on the bottom plate, and two groups of suspension rods being symmetrically mounted on the top of the box body; and two groups of lock hangers being symmetrically mounted on the box top for sealing the top of the box body, the two groups of lock hangers being correspondingly engaged with the two groups of suspension rods, and two groups of support rods being symmetrically mounted inside the box top, cross beams being slidably mounted on the two groups of support rods, detection components being mounted on the cross beams, and fire extinguishing components being mounted at both ends of the cross beams. The present invention designs the box top, and the box top utilizes the lock hangers to flexibly cooperate with the suspension rods arranged in the box body, so as to facilitate the flexible disassembly of the box top, thereby facilitating the lifting; the cross beam in the box top is driven by a lead screw and a motor, and can move inside the box body, and the entire inside of the box body is monitored by the detection component during movement, and when a fire occurs accidentally inside the box body by setting the fire extinguishing component, a fire extinguishing operation is carried out in time.

Description

Technical Field

[0001] The invention relates to the technical field of box-type transformer substations, and in particular to an energy storage current conversion box-type transformer integrated with a dry-type transformer. Background Art

[0002] The energy storage box transformer with integrated dry-type transformer is a device that integrates energy storage, inverter and boost functions. It is used in new energy projects, especially energy storage systems. It has the following main features: High integration: The energy storage box transformer integrates PCS (inverter) and boost box transformer, which simplifies the system structure and improves the integration and reliability of the equipment; High efficiency: The equipment uses high-efficiency dry-type transformers to ensure the efficiency and stability of power conversion and meet the needs of various energy storage projects; Diversified functions: In addition to the basic inverter and boost functions, the energy storage box transformer also has a variety of expansion functions, which can be customized according to project requirements; Compact and light: The integrated design makes the device volume Smaller, easier to transport and install, saving project space; Energy storage function: can collect and store electrical energy from external power sources or renewable energy, and release it when needed to meet power demand; Inverter function: When outputting the electrical energy of the energy storage device to the grid or connecting it to other devices, the conversion function is crucial; Boost function: The booster transformer can increase the input voltage to the required voltage level to suit specific applications or requirements for connection to the grid; This type of equipment is suitable for new energy projects, especially scenarios that require efficient management and utilization of DC power supplies, such as solar and wind energy systems; It simplifies the design and installation process of the energy storage system while improving the overall efficiency and reliability of the system.

[0003] However, after the existing energy storage converter box-type transformers are deployed and put into use, they are deployed in scattered areas and lack effective online supervision during operation. Regular manual maintenance and inspection are required to maintain the continuous operation of the box-type transformer. When used outdoors, high voltage can easily break through internal components and cause fires. There is a lack of online fire extinguishing protection, and the overall box body is mostly a welded structure, which is not convenient for hoisting of integrated equipment. Summary of the invention

[0004] The object of the present invention is to provide an energy storage converter box transformer integrated with a dry-type transformer to solve the problem in the above background technology that the existing energy storage converter box transformer is not convenient for online supervision and cannot extinguish fire in time.

[0005] To achieve the above object, the present invention provides the following technical solution: an energy storage converter box transformer with integrated dry-type transformer, comprising a bottom plate, a box body installed on the bottom plate, a disconnect switch, a dry-type transformer, a low-voltage electric cabinet and an array battery pack electrically connected to each other are installed in sequence in the box body, a PCS rectifier cabinet is installed on one side of the box body on the bottom plate, and two groups of suspension rods are symmetrically installed on the top of the box body;

[0006] The top of the box is used to seal the top of the box body and is symmetrically equipped with two groups of lock hangers, the two groups of lock hangers are correspondingly engaged with the two groups of suspension rods, and two groups of support rods are symmetrically installed in the top of the box, cross beams are slidably installed on the two groups of support rods, detection components are installed on the cross beams, fire extinguishing components are installed on both ends of the cross beams, a screw is rotatably installed in the middle of the top of the box, the cross beam is provided with a threaded through hole threadedly connected to the screw, and a motor for driving the screw to rotate is installed on the top of the box.

[0007] Preferably, both the front and rear sides of the box body are provided with box doors via hinges, the box doors are provided with through holes, shutters are embedded on the outer sides of the through holes, and filter elements are installed on the inner sides of the through holes.

[0008] Preferably, a plurality of exhaust fans are installed on the rear side of the box.

[0009] Preferably, the lock hanger includes a hydraulic cylinder, and the hydraulic cylinder is provided with two groups. The two groups of hydraulic cylinders are fixedly mounted on the top plate of the box top, and the telescopic ends of the two groups of hydraulic cylinders are commonly fixedly mounted with a support plate, a plurality of slide grooves are evenly provided on the support plate, and hooks that are movably buckled with the suspension rod are slidably installed in the plurality of slide grooves, a groove is provided on the vertical plate of the hook, a rack plate is embedded in the groove, a transmission rod and a motor 2 for driving the transmission rod to rotate are installed on the support plate, a plurality of gears are fixedly sleeved on the transmission rod, and the gears are meshed with the corresponding rack plates.

[0010] Preferably, a semicircular arc groove is formed at the bottom end of the hook for engaging with the suspension rod.

[0011] Preferably, the detection component includes a screw that is rotatably installed in an installation groove opened by the crossbeam, and a motor three for driving the screw to rotate is installed on the crossbeam, a movable plate is threadedly installed on the screw, and a thermal imager and a CCD camera are sequentially installed on the movable plate, and the thermal imager and the CCD camera are communicatively connected to a host computer.

[0012] Preferably, the movable plate is slidably matched with the mounting groove provided in the crossbeam.

[0013] Preferably, a plurality of cooling fans are installed on one side of the movable plate.

[0014] Preferably, the fire extinguishing assembly includes a shell, the shell is mounted on the cross beam, and an airbag is installed in the shell, inert gas is stored in the airbag, and a plurality of air ducts are installed on the airbag, outlets of the air ducts are embedded with hot-melt films, resistance wires are pasted on the outside of the hot-melt films, and a controller and a battery electrically connected to the resistance wires are installed in the shell.

[0015] Preferably, the airbag is in a pleated shape.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention designs the box top, and the box top uses a lock hanger to flexibly cooperate with a suspension rod arranged in the box body, so that the box top is easy to flexibly disassemble, thereby facilitating the one-by-one lifting of highly integrated box-type transformer equipment;

[0018] The crossbeam in the top of the box designed by the present invention is driven by a screw and a motor and can move inside the box. During movement, the entire interior of the box is monitored by a detection component. When an accidental fire occurs inside the box, a fire extinguishing component is provided to promptly extinguish the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of the energy storage converter box of the integrated dry-type transformer provided by the present invention;

[0020] Figure 2 It is the overall rear view of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the box of the present invention;

[0022] Figure 4 It is a schematic cross-sectional structure diagram of the present invention as a whole;

[0023] Figure 5 It is a structural schematic diagram of the top of the box of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the lock hanging part of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the detection component of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the fire extinguishing assembly of the present invention.

[0027] In the figure: 1. Bottom plate; 2. Box body; 3. Isolation switch; 4. Dry-type transformer; 5. Low-voltage electric cabinet; 6. Array battery pack; 7. PCS rectifier cabinet; 8. Suspension rod; 9. Box top; 10. Lock pendant; 11. Support rod; 12. Beam; 13. Detection component; 14. Fire extinguishing component; 15. Lead screw; 16. Motor 1; 17. Box door; 18. Shutter; 19. Filter element; 20. Exhaust fan; 21. Hydraulic Cylinder; 22. Support plate; 23. Hook; 24. Rack plate; 25. Transmission rod; 26. Motor 2; 27. Gear; 28. Screw; 29. ​​Motor 3; 30. Moving plate; 31. Thermal imager; 32. CCD camera; 33. Cooling fan; 34. Shell; 35. Airbag; 36. Air duct; 37. Hot melt film; 38. Resistance wire; 39. Controller; 40. Battery; 41. UPS backup power supply. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figure 1 - Figure 5 , an energy storage converter box transformer with integrated dry-type transformer in the figure comprises a base plate 1, a box body 2 is mounted on the base plate 1, a disconnect switch 3, a dry-type transformer 4, a low-voltage electric cabinet 5, and an array battery pack 6 which are electrically connected to each other are sequentially mounted in the box body 2, a PCS rectifier cabinet 7 is mounted on one side of the box body 2 on the base plate 1, and two sets of suspension rods 8 are symmetrically mounted on the top of the box body 2;

[0030] The top 9 of the box is used to seal the top of the box body 2, and two groups of lock hangers 10 are symmetrically installed on the top 9 of the box. The two groups of lock hangers 10 are correspondingly engaged with the two groups of suspension rods 8, and two groups of support rods 11 are symmetrically installed in the top 9 of the box. A crossbeam 12 is slidably installed on the two groups of support rods 11, and a detection component 13 is installed on the crossbeam 12. Fire extinguishing components 14 are installed at both ends of the crossbeam 12. A screw 15 is rotatably installed in the middle of the top 9 of the box, and a threaded through hole threadedly connected to the screw 15 is opened in the crossbeam 12. A motor 16 for driving the screw 15 to rotate is installed on the top 9 of the box.

[0031] In this solution, two sets of designed lock hangers 10 are connected with the suspension rod 8 to realize the rapid assembly and disassembly of the box top 9 and the box body 2, which is convenient for hoisting the equipment inside the box body 2. The motor 16 drives the lead screw 15 to rotate. When the lead screw 15 rotates, it drives the crossbeam 12 to move along the support rod 11. When moving, the detection component 13 is used to monitor the operating status of the partition switch 3, dry-type transformer 4, low-voltage electric cabinet 5 and array battery group 6 inside the box body 2 in real time. When an accidental fire occurs, the fire extinguishing component 14 is used to extinguish the fire inside the box body 2 in time, thereby realizing online supervision when the box transformer is running;

[0032] It should be noted that: this solution uses a motor 16 to drive the screw 15 to rotate, so that the beam 12 drives the detection component 13 and the fire extinguishing component 14 to move inside the box 2, which is convenient for timely and comprehensive monitoring of various parts inside the box 2, improves the monitoring coverage area and can carry out targeted fire extinguishing when an accidental fire occurs.

[0033] See also Figure 1 and Figure 3 In order to facilitate the maintenance and replacement of the box transformer in the later stage, the front and rear sides of the box body 2 are both hinged with box doors 17. In order to dissipate the internal heat in time during operation, the box doors 17 are provided with through holes, and the outer side of the through holes is embedded with shutters 18 to improve the internal air circulation and facilitate timely heat dissipation. In order to prevent dust from entering during air circulation, a filter element 19 is installed on the inner side of the through hole;

[0034] For further information, see Figure 2 , a plurality of exhaust fans 20 are installed on the rear side of the box 2, so that the exhaust fans 20 can timely discharge the hot air inside the box 2 to improve the overall heat dissipation;

[0035] For further information, see Figure 4 - Figure 6 The lock hanger 10 includes a hydraulic cylinder 21, and the hydraulic cylinder 21 is provided with two groups. The two groups of hydraulic cylinders 21 are fixedly installed on the top plate of the box top 9, and the telescopic ends of the two groups of hydraulic cylinders 21 are fixedly installed with a support plate 22. A plurality of slide grooves are evenly provided on the support plate 22, and a hook 23 that is movably buckled with the suspension rod 8 is slidably installed in the plurality of slide grooves. A groove is provided on the vertical plate of the hook 23, and a rack plate 24 is embedded in the groove. A transmission rod 25 and a motor 26 for driving the transmission rod 25 to rotate are installed on the support plate 22. A plurality of gears 27 are fixedly sleeved on the transmission rod 25, and the gears 27 are meshed with the corresponding rack plates 24;

[0036] The bottom end of the hook 23 is provided with a semicircular arc groove for engaging with the suspension rod 8 .

[0037] When the box top 9 is docked with the box body 2, the hydraulic cylinder 21 is controlled to drive the support plate 22 to retract, and then the box top 9 is covered just above the box body 2, and then the hydraulic cylinder 21 is controlled to push the support plate 22 out until the hook 23 is pushed to just below the suspension rod 8, and then the motor 26 is started to drive the transmission rod 25 to rotate, so that the transmission rod 25 drives the gear 27 to rotate, and the gear 27 engages with the rack plate 24, thereby driving the hook 23 to rise, and the semicircular arc groove of the real-time hook 23 is hooked on the suspension rod 8 to complete the connection, which is convenient for the later use of the box top 9 for overall lifting. When disassembly is required, the motor 26 is controlled to reverse first and then the hydraulic cylinder 21 is retracted.

[0038] It should be noted that: in order to achieve long-term locking of the position of the hook 23, when the motor 26 drives the transmission rod 25 to rotate, the output shaft of the motor 26 is coaxially connected to the worm, and a worm wheel is fixedly sleeved on the end of the transmission rod 25 close to the worm, and the worm wheel is meshed with the worm, thereby utilizing the worm gear transmission to achieve self-locking after adjustment.

[0039] For further information, see Figure 3 - Figure 7 The detection component 13 includes a screw 28 in a mounting groove provided in a rotatable mounting crossbeam 12, and a motor 29 for driving the screw 28 to rotate is mounted on the crossbeam 12, a moving plate 30 is threadedly mounted on the screw 28, and a thermal imager 31 and a CCD camera 32 are sequentially mounted on the moving plate 30, and the thermal imager 31 and the CCD camera 32 are communicatively connected to a host computer;

[0040] The movable plate 30 is slidably matched with the mounting groove formed in the cross beam 12 .

[0041] The screw 28 is driven to rotate by the motor 3 29, thereby driving the moving plate 30 to move on the beam 12. When moving, the thermal imager 31 and the CCD camera 32 are turned on to take pictures and monitor the area through which the moving passes, and to detect the heat, so as to avoid overheating and damage to the equipment;

[0042] When the movable plate 30 moves on the beam 12, the beam 12 is driven by the motor 16 and the lead screw 15 to move synchronously along the support rod 11, thereby increasing the moving range in the box 2, realizing comprehensive monitoring of the box 2, and transmitting the monitoring image to the upper computer for unified monitoring and management.

[0043] Furthermore, a plurality of cooling fans 33 are installed on one side of the movable plate 30, so that when moving, for a high temperature area, the cooling fans 33 can be started to improve the heat dissipation of the high temperature area.

[0044] For further information, see Figure 3 - Figure 7The fire extinguishing assembly 14 includes a shell 34, which is mounted on the crossbeam 12, and an air bag 35 is installed in the shell 34, inert gas is stored in the air bag 35, and a plurality of air guide tubes 36 are installed on the air bag 35, and a hot melt film 37 is embedded in the outlet of the air guide tube 36, and a resistance wire 38 is pasted on the outer side of the hot melt film 37, and a controller 39 and a battery 40 electrically connected to the resistance wire 38 are installed in the shell 34;

[0045] The airbag 35 is pleated, so that when it is opened, the pleats automatically reset to speed up the exhaust.

[0046] By setting up the fire extinguishing assembly 14, when an accidental fire occurs, the controller 39 controls the battery 40 to supply power to the resistance wire 38, thereby melting the hot melt film 37, thereby opening the air duct 36, and the inert gas in the airbag 35 is discharged from the air duct 36 to extinguish the fire.

[0047] The inert gas here is heptafluoropropane, a high-pressure inert gas that rushes to the fire point, quickly creating an oxygen-free environment to extinguish the fire.

[0048] Example 2: Please refer to Figure 3 This embodiment further explains the first embodiment, and its difference is that a UPS backup power supply 41 is also embedded in the top 9 of the box, and the UPS backup power supply 41 is electrically connected to the array battery group 6 and the storage battery 40.

[0049] In this solution, by setting up a UPS backup power supply 41 to connect the array battery group 6 and the battery 40, sudden power outages can be avoided. When the battery 40 is low on power, it cannot supply power to the controller 39, causing the fire extinguishing action to fail, affecting the timely fire extinguishing operation.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Energy storage converter box with integrated dry-type transformer, including: A base plate (1), a box (2) being mounted on the base plate (1), wherein a disconnect switch (3), a dry-type transformer (4), a low-voltage electric cabinet (5) and an array battery group (6) which are electrically connected to each other are mounted in sequence in the box (2), a PCS rectifier cabinet (7) being mounted on one side of the box (2) on the base plate (1), and two groups of suspension rods (8) being symmetrically mounted on the top of the box (2); It is characterized by further comprising: A box top (9), the box top (9) used to seal the top of the box body (2) is symmetrically equipped with two groups of lock hangers (10), the two groups of lock hangers (10) are correspondingly engaged with the two groups of suspension rods (8), and two groups of support rods (11) are symmetrically installed in the box top (9), cross beams (12) are slidably installed on the two groups of support rods (11), detection components (13) are installed on the cross beams (12), and fire extinguishing components (14) are installed at both ends of the cross beams (12), a lead screw (15) is rotatably installed in the middle of the box top (9), the cross beam (12) is provided with a threaded through hole threadedly connected to the lead screw (15), and a motor (16) for driving the lead screw (15) to rotate is installed on the box top (9); By means of the designed two sets of lock hangers (10) being connected with the suspension rod (8), the box top (9) and the box body (2) can be quickly assembled and disassembled, and the equipment inside the box body (2) can be easily hoisted. The motor 1 (16) drives the lead screw (15) to rotate. When the lead screw (15) rotates, the crossbeam (12) is driven to move along the support rod (11). When moving, the detection component (13) is used to monitor the operating status of the partition switch (3), dry-type transformer (4), low-voltage electric cabinet (5) and array battery group (6) inside the box body (2) in real time. When an accidental fire occurs, the fire extinguishing component (14) is used to timely extinguish the fire inside the box body (2), thereby realizing online supervision when the box transformer is in operation. The lock hanging component (10) comprises a hydraulic cylinder (21), wherein the hydraulic cylinder (21) is provided with two groups, the two groups of hydraulic cylinders (21) are fixedly mounted on the top plate of the box top (9), and the telescopic ends of the two groups of hydraulic cylinders (21) are fixedly mounted with a support plate (22), the support plate (22) is evenly provided with a plurality of slide grooves, and a hook (23) that is movably mounted in the plurality of slide grooves and is slidably mounted with a movably buckled hook with the suspension rod (8), a groove is provided on the vertical plate of the hook (23), and a rack plate (24) is embedded in the groove, a transmission rod (25) and a second motor (26) for driving the transmission rod (25) to rotate are mounted on the support plate (22), and a plurality of gears (27) are fixedly sleeved on the transmission rod (25), and the gears (27) are meshed with the corresponding rack plates (24); The bottom end of the hook (23) is provided with a semicircular arc groove for engaging with the suspension rod (8); When the box top (9) is docked with the box body (2), the hydraulic cylinder (21) is controlled to drive the support plate (22) to retract, and then the box top (9) is closed on the top of the box body (2), and then the hydraulic cylinder (21) is controlled to push the support plate (22) to extend until the hook (23) is pushed to the bottom of the suspension rod (8), and then the second motor (26) is started to drive the transmission rod (25) to rotate, so that the transmission rod (25) drives the gear (27) to rotate, and the gear (27) is meshed with the rack plate (24), thereby driving the hook (23) to rise, and the semicircular arc groove of the real-time hook (23) is hooked on the suspension rod (8) to complete the clamping connection, which is convenient for the box top (9) to be used for overall lifting later. When disassembly is required, the second motor (26) is controlled to reverse first and then the hydraulic cylinder (21) is retracted; In order to achieve long-term locking of the position of the hook (23), when the second motor (26) drives the transmission rod (25) to rotate, the output shaft of the second motor (26) is coaxially connected to a worm, and a worm wheel is fixedly sleeved on one end of the transmission rod (25) close to the worm, and the worm wheel meshes with the worm, so that self-locking is achieved after adjustment by utilizing the worm wheel transmission.

2. The energy storage converter box with integrated dry-type transformer according to claim 1 is characterized in that: Doors (17) are installed on both the front and rear sides of the box body (2) via hinges. The doors (17) are provided with through holes. Shutters (18) are embedded on the outside of the through holes. A filter element (19) is installed on the inside of the through holes.

3. The energy storage converter box with integrated dry-type transformer according to claim 1 is characterized in that: A plurality of exhaust fans (20) are installed on the rear side of the box body (2).

4. The energy storage converter box with integrated dry-type transformer according to claim 1 is characterized in that: The detection component (13) includes a screw rod (28) rotatably mounted in a mounting groove provided in the cross beam (12), and a motor (29) for driving the screw rod (28) to rotate is mounted on the cross beam (12), a movable plate (30) is threadedly mounted on the screw rod (28), and a thermal imager (31) and a CCD camera (32) are sequentially mounted on the movable plate (30), and the thermal imager (31) and the CCD camera (32) are communicatively connected to a host computer.

5. The energy storage converter box integrated with a dry-type transformer according to claim 4 is characterized in that: The movable plate (30) is slidably matched with a mounting groove provided in the crossbeam (12).

6. The energy storage converter box integrated with a dry-type transformer according to claim 4 is characterized in that: A plurality of cooling fans (33) are installed on one side of the movable plate (30).

7. The energy storage converter box integrated with a dry-type transformer according to claim 1 is characterized in that: The fire extinguishing assembly (14) comprises a shell (34), the shell (34) being mounted on the crossbeam (12), and an air bag (35) being mounted inside the shell (34), inert gas being stored inside the air bag (35), and a plurality of air guide tubes (36) being mounted on each of the air guide tubes (35), outlets of the air guide tubes (36) being embedded with a hot melt film (37), a resistance wire (38) being adhered to the outer side of the hot melt film (37), and a controller (39) and a storage battery (40) being mounted inside the shell (34) and being electrically connected to the resistance wire (38).

8. The energy storage converter box integrated with a dry-type transformer according to claim 7 is characterized in that: The airbag (35) is in a wrinkled shape.

Images