Lightning protection type on-load voltage regulating transformer

Abstract

The utility model relates to a lightning protection type on-load voltage regulating transformer. The technical problem that the utility model wants to solve provides a lightning protection type on-load voltage regulating transformer. The utility model adopts the technical scheme: including transformer core group, transformer coil, upper clamping plate subassembly and lower clamping plate subassembly, the voltage regulator controller subassembly fixed on the upper clamping plate subassembly through fastening screw, the upper clamping plate subassembly includes upper clamping plate, the voltage regulator controller subassembly includes voltage regulator controller and voltage regulator controller protection box, and the voltage regulator controller includes controller panel and controller main body. The utility model has the advantages that: through the structure of controller protection box and its installation mode with the upper clamping plate, make after voltage regulator controller installation and isolation with the outside world, can effectively prevent dust from entering, improve the protection level, prolong the service life, prevent the controller main body from shaking or shifting in the operation process simultaneously effectively, improve the overall reliability.

Description

Technical Field

[0001] This utility model relates to a lightning-protected on-load tap-changing transformer. Background Technology

[0002] A surge-protected on-load tap-changing transformer is a type of transformer that can adjust the winding turns ratio via a tap changer while operating under load, thereby achieving continuous or stepped voltage regulation. It is widely used in power systems to maintain grid voltage stability and meet power supply demands under various operating conditions. As a crucial piece of equipment in the power system, surge-protected on-load tap-changing transformers not only require excellent electrical performance but also need to ensure reliable operation and convenient maintenance of the control system.

[0003] Existing lightning-protected on-load tap-changing transformers still have some shortcomings in practical applications: existing tap-changing controllers are mostly directly installed on the transformer clamps or casing, with incomplete protection structures. Dust and moisture in the operating environment can easily enter the controller, causing components to become damp, corroded, or short-circuited, affecting service life and safety. When the transformer is running, there are mechanical vibrations and electromagnetic impacts. The controller body is fixed in a single way, which can easily lead to loosening or displacement, causing unstable internal wiring or even damage, reducing overall operational reliability. Utility Model Content

[0004] To solve the above problems, the technical problem to be solved by this utility model is to provide a lightning-proof on-load tap-changing transformer.

[0005] The technical solution adopted by this utility model of a lightning-protected on-load tap-changing transformer includes: a transformer core assembly, a transformer coil sleeved outside the transformer core assembly, an upper clamping plate assembly clamped on the front and rear sides of the upper end of the transformer core assembly, a lower clamping plate assembly clamped on the front and rear sides of the lower end of the transformer core assembly, and a tap-regulating controller assembly fixed to the upper clamping plate assembly by fastening screws. The upper clamping plate assembly includes an upper clamping plate clamped on the front and rear sides of the upper end of the transformer core assembly. The tap-regulating controller assembly is characterized by including a tap-regulating controller and a tap-regulating controller protective box. The tap-regulating controller includes a controller panel and a controller body. The bottom of the controller body is provided with a controller housing anti-slip groove. The device protective box includes a protective box body, a protective box rear cover that is hinged and swayable at the rear end of the protective box body, and a glass cover at the front end of the protective box body. The front end of the protective box body is provided with a box body insertion port. The protective box body is provided with an inner cavity for placing the controller body. The bottom rear end of the inner cavity is provided with a box body outlet and a box body lifting block for keeping the controller body horizontal and stable. The box body lifting block is provided on both sides of the box body outlet. After the controller body is inserted into the box body insertion port, its rear end rests on the box body lifting block. The bottom of the inner cavity is also provided with a box body threaded hole. The upper clamping plate includes an upper clamping plate body. The upper end of the upper clamping plate body is bent vertically outward to form an upper upper clamping plate and an upper clamping plate side stop. The upper end of the upper clamping plate is provided with an upper clamping plate lead hole and an upper clamping plate through hole from the inside to the outside, which are connected to the cable outlet of the housing. The fastening screw passes through the upper clamping plate through hole and is threadedly connected to the threaded hole of the housing, and its upper end abuts against the anti-slip groove of the controller housing.

[0006] The rear cover of the protective box can swing up and down via the hinge.

[0007] The number of fastening screws, the through holes in the upper clamping plate, the threaded holes in the housing, and the anti-slip grooves in the controller housing are all two.

[0008] The protective box has a positioning protrusion at the bottom of the front end, and the upper end of the upper clamp has a limiting opening corresponding to the positioning protrusion.

[0009] The glass cover is made of transparent material and has glass cover slots on its left and right sides. The front of the left and right sides of the protective box body is provided with box body blocks for the glass cover slots to be engaged.

[0010] The advantages of this lightning-proof on-load tap-changing transformer are as follows: The structure of the controller protection box and its installation method with the upper clamping plate isolate the tap-changing controller from the outside environment after installation, effectively preventing dust from entering, improving the protection level, and extending its service life. It also effectively prevents the controller body from shaking or shifting due to vibration during operation, enhancing overall reliability. This ensures the tap-changing controller is effectively protected from dust entry and is less susceptible to vibration during transformer operation. The glass cover provides both visual monitoring and reliable protection, allowing observation of the internal status while preventing dust and foreign objects from entering. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of the lightning protection on-load tap-changing transformer of this utility model; Figure 2 This is a schematic diagram of the structure of the voltage regulator controller assembly of this utility model; Figure 3 This is a schematic diagram of the structure of the voltage regulating controller of this utility model; Figure 4 This is a structural schematic diagram of the controller protective box of this utility model; Figure 5 This is a schematic diagram of the structure of the protective box body of this utility model; Figure 6 This is a schematic diagram of the upper clamping plate of this utility model; Figure 7 This is a schematic diagram of the structure of the glass cover of this utility model. Detailed Implementation

[0013] like Figure 1-7 As shown, the lightning-protected on-load tap-changing transformer of this utility model includes a transformer core assembly 1, a transformer coil 2 sleeved outside the transformer core assembly 1, an upper clamping plate assembly clamped on the front and rear sides of the upper end of the transformer core assembly 1, a lower clamping plate assembly 4 clamped on the front and rear sides of the lower end of the transformer core assembly 1, and a tap-regulating controller assembly 5 fixed to the upper clamping plate assembly by fastening screws 6. The upper clamping plate assembly includes an upper clamping plate 3 clamped on the front and rear sides of the upper end of the transformer core assembly 1. The tap-regulating controller assembly 5 includes a tap-regulating controller 8 and a tap-regulating controller protective box 9. The tap-regulating controller 8 includes a controller panel 11. The controller body 12 has a controller housing anti-slip groove 10 at its bottom. The controller protective box 9 includes a protective box body 13, a protective box rear cover 14 that is pivotally mounted at the rear end of the protective box body 13 via a hinge 16, and a glass cover 15 located at the front end of the protective box body 13. The front end of the protective box body 13 has a box insertion port 18. The protective box body 13 has an inner cavity 19 for placing the controller body 12. The bottom rear end of the inner cavity 19 has a box cable outlet 21 and a box lifting block 20 for keeping the controller body 12 horizontal and stable. The box lifting blocks 20 are located on both sides of the box outlet 21. After the controller body 12 is inserted into the box socket 18, its rear end is supported on the box lifting blocks 20. The bottom of the box inner cavity 19 is also provided with a box threaded hole 22. The upper clamping plate 3 includes an upper clamping plate body 24. The upper end of the upper clamping plate body 24 is bent vertically outward to form an upper clamping plate upper part 26 and an upper clamping plate side stop 27. The upper clamping plate upper part 26 is provided with an upper clamping plate lead hole 28 and an upper clamping plate through hole 29 from the inside to the outside, which are connected to the box outlet 21. The fastening screw 6 passes through the upper clamping plate through hole 29 and is then connected to the box. The threaded hole 22 is threaded and its upper end abuts against the anti-slip groove 10 of the controller housing. Through the structure of the controller protective box 9 and its installation method with the upper clamping plate 3, the voltage regulator 8 is isolated from the outside after installation, which can effectively prevent dust from entering, improve the protection level, extend the service life, and effectively prevent the controller body 12 from shaking or shifting due to vibration during operation, thus improving the overall reliability. This makes the voltage regulator 8 effectively prevent dust from entering during use and less susceptible to vibration during transformer operation. The glass cover 15 realizes visual monitoring and reliable protection, allowing observation of the internal status while preventing dust and foreign objects from entering.

[0014] The rear cover plate 14 of the protective box can swing up and down via the hinge 16. The up and down swinging method will not interfere with other components of the transformer and facilitates the circuit maintenance of the voltage regulator 8.

[0015] The fastening screw 6, the upper clamping plate through hole 29, the box threaded hole 22, and the controller housing anti-slip groove 10 are all in two quantities, forming a double-point fixation to enhance connection reliability.

[0016] The protective box body 13 has a box body positioning protrusion 31 at the bottom of the front end, and the upper part 26 of the upper clamping plate has an upper clamping plate limiting opening 32 corresponding to the box body positioning protrusion 31, so as to ensure accurate positioning of the protective box during installation, avoid displacement, and improve assembly consistency and operational stability.

[0017] The glass cover 15 is made of transparent material and has glass cover slots 33 on its left and right sides. The front of the left and right sides of the protective box body 13 is provided with box body blocks 34 for engaging the glass cover slots 33.

[0018] The cable at the rear end of the voltage regulator controller 8 can be transported from the back of the upper part 26 of the upper clamp plate through the cable outlet 21 of the housing and the lead hole 28 of the upper clamp plate. The cable is limited by the side baffle 27 of the upper clamp plate, making the transformer exterior more aesthetically pleasing and the wiring more concealed and safe.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A lightning-protected on-load tap-changing transformer, comprising a transformer core assembly (1), a transformer coil (2) sleeved outside the transformer core assembly (1), an upper clamping plate assembly clamped on the front and rear sides of the upper end of the transformer core assembly (1), and a lower clamping plate assembly (4) clamped on the front and rear sides of the lower end of the transformer core assembly (1), and a voltage regulating controller assembly (5) fixed on the upper clamping plate assembly by fastening screws (6), wherein the upper clamping plate assembly includes an upper clamping plate (3) clamped on the front and rear sides of the upper end of the transformer core assembly (1), characterized in that: The voltage regulator assembly (5) includes a voltage regulator (8) and a voltage regulator protective case (9). The voltage regulator (8) includes a controller panel (11) and a controller body (12). The controller body (12) has a controller housing anti-slip groove (10) at its bottom. The controller protective case (9) includes a protective case body (13), a protective case rear cover (14) that is swayably mounted at the rear end of the protective case body (13) via a hinge (16), and a glass cover (15) mounted at the front end of the protective case body (13). The protective case body (13) has a housing at its front end. The protective box (13) has an inner cavity (19) for placing the controller body (12). The bottom rear end of the inner cavity (19) has a box outlet (21) and a box lifting block (20) for keeping the controller body (12) horizontal and stable. The box lifting block (20) is located on both sides of the box outlet (21). After the controller body (12) is inserted into the box socket (18), its rear end is supported by the box lifting block (20). The bottom of the inner cavity (19) also has a box thread hole (22). The upper clamp (3) includes an upper clamp body (24). The upper end of the upper clamp body (24) is bent vertically outward to form an upper clamp upper part (26) and an upper clamp side stop (27). The upper clamp upper part (26) is provided with an upper clamp lead hole (28) and an upper clamp through hole (29) that are connected to the cable outlet (21) of the box body from the inside to the outside. The fastening screw (6) passes through the upper clamp through hole (29) and is threaded to the box body threaded hole (22), and its upper end abuts against the anti-slip groove (10) of the controller housing.

2. The lightning-protected on-load tap-changing transformer according to claim 1, characterized in that: The rear cover (14) of the protective box can swing up and down via the hinge (16).

3. The lightning-protected on-load tap-changing transformer according to claim 1, characterized in that: The number of the fastening screw (6), the upper clamping plate through hole (29), the box threaded hole (22), and the controller housing anti-slip groove (10) are all two.

4. The lightning-protected on-load tap-changing transformer according to claim 1, characterized in that: The protective box body (13) has a box body positioning protrusion (31) at the bottom of the front end, and the upper part (26) of the upper clamping plate has an upper clamping plate limiting opening (32) corresponding to the box body positioning protrusion (31).

5. The lightning-protected on-load tap-changing transformer according to claim 1, characterized in that: The glass cover (15) is made of transparent material and has glass cover slots (33) on its left and right sides. The front of the left and right sides of the protective box body (13) is provided with box body blocks (34) for the glass cover slots (33) to be engaged.

Images