Multi-port power electronic transformer

Abstract

The utility model relates to the field of transformers, in particular to a multi-port power electronic transformer which comprises a transformer body and a protection device. The machine body is provided with a connecting block, and the connecting block is provided with a plurality of linearly distributed connecting ports; the protection device comprises a shielding mechanism and a reinforcing mechanism which are arranged on the connecting block, and the shielding mechanism comprises a fixing plate arranged on the connecting block, a shielding plate arranged above the fixing plate, two fixing rods distributed on the shielding plate in a left-right mode, a stabilizing frame arranged on the connecting block and first springs connected to the fixing rods in a sleeving mode. The two ends of the first spring are arranged on the shielding plate and the stabilizing frame correspondingly, and the fixing rod is slidably connected to the stabilizing frame. According to the utility model, not only can the opening of each connection port be shielded and opened independently, but also the connected wire can be reinforced, so that the connection stability is ensured.

Description

Technical Field

[0001] The utility model relates to the field of transformers, in particular to a multi-port power electronic transformer. Background Art

[0002] The multi-port power electronic transformer is a new type of electrical equipment that integrates a power electronic converter and a high-frequency transformer. It not only has the voltage level conversion and electrical isolation functions of a traditional AC transformer, but can also realize multiple functions such as AC-DC conversion, direct access to DC power supply / load, reactive power compensation and harmonic control.

[0003] Chinese patent publication number CN220381896U discloses a multi-port power electronic transformer, including a transformer body, a slide rail fixedly mounted on the left bottom of the transformer body, and a protective cover slidably connected to the slide rail, a plurality of wire threading openings equidistantly formed on the inner wall of the left bottom of the protective cover, and a positioning assembly mounted on the top of the protective cover. The utility model can position and clamp the conductive wires by pushing the protective cover downward, thereby stably connecting the wires to the power board. Under the protective effect of the protective cover, the connection of the wires can be protected, thereby ensuring normal power supply to the wires and not affecting the normal operation of the equipment.

[0004] However, the above technical solution has the following shortcomings: although the device can protect the connection of the wires through the provided protective cover, the connection ports are generally not used at the same time. When the wires are subsequently connected or unplugged, the entire protective cover needs to be pulled up and then down. Since the wires have been tightly pressed before, the sudden disappearance of pressure may cause some port connections to loosen accidentally, affecting the normal connectivity of the equipment and reducing the practicality of the protective cover. Utility Model Content

[0005] The purpose of the utility model is to address the problems existing in the background technology and propose a multi-port power electronic transformer, which can not only block and open the opening of each connection port individually, but also reinforce the connected wires to ensure the stability of the connection.

[0006] The technical solution of the utility model is a multi-port power electronic transformer, comprising a body and a protective device; a connecting block is provided on the body, and a plurality of linearly distributed connecting ports are provided on the connecting block; the protective device comprises a shielding mechanism and a reinforcement mechanism arranged on the connecting block, the shielding mechanism comprising a fixed plate arranged on the connecting block, a shielding plate arranged above the fixed plate, two fixed rods distributed on the shielding plate on the left and right, a stabilizing frame arranged on the connecting block, and a first spring sleeved on the fixed rod, the two ends of the first spring are respectively arranged on the shielding plate and the stabilizing frame, and the fixed rod is slidably connected to the stabilizing frame.

[0007] Preferably, the fixing plate is provided with two symmetrically distributed limiting grooves, the shielding plate is provided with an inserting block that is mutually adapted to the limiting grooves, and the shielding plate is provided with a protrusion that can block the opening of the connection port.

[0008] Preferably, the reinforcement mechanism includes two fixed frames distributed on the left and right sides of the fixed plate, a sliding rod slidably set on the fixed frame, a convex ring set on the sliding rod, a second spring set on the convex ring, a pin slidably set on the fixed frame and passing through the sliding rod, and a clamping block set on the sliding rod, and the second spring is sleeved on the sliding rod.

[0009] Preferably, two vertical plates are provided on the fixed plate, and the sliding rod is slidably connected to the vertical plates.

[0010] Preferably, a rubber pad is provided on the clamping block.

[0011] Preferably, a wiring assembly is provided on the machine body, and the wiring assembly includes a support block provided on the machine body, a plurality of wire clamping bodies linearly distributed on the support block, and an elastic pad provided inside the support block, and the wire clamping body includes an arc-shaped clamping frame and a "T"-shaped support body.

[0012] Preferably, a plurality of heat sinks are provided on the machine body, and a connecting assembly is provided on the heat sink. The connecting assembly includes a connecting frame, an insertion rod provided through the connecting frame, a threaded block provided on the machine body, and a fixing bolt threadedly connected to the threaded block, and the fixing bolt is threadedly connected to the insertion rod.

[0013] Preferably, a plurality of spacers are provided on the connection frame, and the heat sink is embedded in the gaps between adjacent spacers.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] The utility model provides a shielding mechanism, when part of the connection port is not needed, the opening can be blocked by the shielding plate to prevent dust, water vapor and other substances from entering the interior of the connection port, resulting in the subsequent malfunction of the connection port. After the wire is connected, the reinforcement mechanism provided can clamp the part of the wire close to the end, thereby improving the stability of the wire connection and preventing the connection from loosening when the wire is accidentally pulled by the outside world. The utility model has good practicality and is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 It is a structural diagram of the protective device;

[0018] Figure 3 is a schematic diagram of the structure of the wiring assembly;

[0019] Figure 4 for Figure 1 A schematic diagram of the structure at point A in the middle;

[0020] Figure 5 A schematic diagram of the connection frame structure.

[0021] Figure numerals: 1. body; 2. connecting block; 3. fixing plate; 4. connecting port; 5. limiting groove; 6. shield; 7. fixing rod; 8. first spring; 9. stabilizing frame; 10. plug-in block; 11. fixing frame; 12. sliding rod; 13. convex ring; 14. second spring; 15. latch; 16. clamping block; 17. rubber pad; 18. vertical plate; 19. supporting block; 20. clamping body; 21. elastic pad; 22. heat sink; 23. connecting frame; 24. plug-in rod; 25. threaded block; 26. fixing bolt; 27. spacer. DETAILED DESCRIPTION

[0022] Example 1

[0023] like Figure 1-Figure 5 As shown, a multi-port power electronic transformer proposed in this embodiment includes a body 1 and a protective device; a connection block 2 is provided on the body 1, and a plurality of linearly distributed connection ports 4 are provided on the connection block 2, and the connection ports 4 are used to connect wires to connect the body 1 with the outside world.

[0024] like Figure 1 and Figure 2 As shown, the protective device includes a shielding mechanism and a reinforcement mechanism arranged on the connecting block 2, the shielding mechanism includes a fixed plate 3 arranged on the connecting block 2, a shielding plate 6 arranged above the fixed plate 3, two fixed rods 7 distributed on the left and right sides of the shielding plate 6, a stabilizing frame 9 arranged on the connecting block 2, and a first spring 8 sleeved on the fixed rod 7, the two ends of the first spring 8 are respectively arranged on the shielding plate 6 and the stabilizing frame 9, and the fixed rod 7 is slidably connected to the stabilizing frame 9.

[0025] Two symmetrically distributed limit grooves 5 are provided on the fixing plate 3, and an insert block 10 that is adapted to the limit groove 5 is provided on the shield 6. A protrusion that can block the opening of the connection port 4 is provided on the shield 6. The insert block 10 and the limit groove 5 guide the closing of the shield 6.

[0026] The reinforcement mechanism includes two fixed frames 11 distributed on the left and right sides of the fixed plate 3, a sliding rod 12 slidably set on the fixed frame 11, a convex ring 13 set on the sliding rod 12, a second spring 14 set on the convex ring 13, a pin 15 slidably set on the fixed frame 11 and passing through the sliding rod 12, and a clamping block 16 set on the sliding rod 12. The second spring 14 is sleeved on the sliding rod 12. Two vertical plates 18 are provided on the fixed plate 3. The sliding rod 12 is slidably connected to the vertical plates 18. The vertical plates 18 are used to support the sliding of the sliding rod 12. A rubber pad 17 is provided on the clamping block 16. The rubber pad 17 is used to prevent the clamping block 16 from wearing the wire.

[0027] In this embodiment, when part of the connection port 4 is not needed, the protrusion on the shield 6 will block the opening of the connection port 4 to prevent dust, water vapor and other substances from entering the interior of the connection port 4, resulting in the problem that the connection port 4 cannot be used normally later; when the wire needs to be connected to the connection port 4, the shield 6 is first lifted up, the fixing rod 7 moves upward with the shield 6 and compresses the first spring 8, and then the end of the wire is connected, and the pin 15 is pulled out from the inside of the slide bar 12. The slide bar 12 slides under the action of the second spring 14, and then the slide bar 12 drives the clamping block 16 to approach the part of the wire near the end until the clamping block 16 clamps the wire, thereby improving the stability of the wire connection and avoiding the loose connection when the wire is accidentally pulled by the outside world, which has good practicality.

[0028] Example 2

[0029] like Figure 1 、 Figure 3 and Figure 5 As shown, a multi-port power electronic transformer proposed in this embodiment, compared with embodiment 1, in this embodiment, a wiring assembly is provided on the body 1, the wiring assembly includes a support block 19 provided on the body 1, a plurality of wire clamping bodies 20 linearly distributed on the support block 19, and an elastic pad 21 provided inside the support block 19, and the wire clamping body 20 includes an arc-shaped clamping frame and a "T"-shaped support body.

[0030] In this embodiment, after the wires are connected, the wires can be pressed against the arc-shaped clamping frame of the wire clamping body 20 so that the wires are clamped by the arc-shaped clamping frame, thereby avoiding the wires from being entangled during connection, facilitating subsequent inspection and maintenance. At the same time, the elastic pad 21 provided can avoid excessive force when pressing the wires, which may cause damage to the wire clamping body 20, and has good practicality.

[0031] Example 3

[0032] like Figure 1 and Figure 4As shown, a multi-port power electronic transformer proposed in this embodiment, compared with Example 1, in this embodiment, a plurality of heat sinks 22 are provided on the body 1, and a connecting component is provided on the heat sink 22. The connecting component includes a connecting frame 23, an insertion rod 24 provided through the connecting frame 23, a threaded block 25 provided on the body 1, and a fixing bolt 26 threadedly connected to the threaded block 25. The fixing bolt 26 is threadedly connected to the insertion rod 24. A plurality of spacers 27 are provided on the connecting frame 23, and the heat sink 22 is embedded in the gap between adjacent spacers 27.

[0033] In this embodiment, when installing the heat sink 22, first insert the spacer block 27 into the heat sink 22, then insert the rod 24 through the connecting frame 23 and the heat sink 22, and finally screw the fixing bolt 26 into the threaded block 25 and the rod 24, so that the outside of the heat sink 22 is fixed, and it is no longer necessary to fix it through traditional welding methods, and the operation is simple and convenient.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A multi-port power electronic transformer, characterized in that: include: A machine body (1) is provided with a connection block (2), and the connection block (2) is provided with a plurality of linearly distributed connection ports (4); A protective device comprises a shielding mechanism and a reinforcing mechanism arranged on a connecting block (2); the shielding mechanism comprises a fixing plate (3) arranged on the connecting block (2), a shielding plate (6) arranged above the fixing plate (3), two fixing rods (7) distributed on the shielding plate (6) on the left and right, a stabilizing frame (9) arranged on the connecting block (2), and a first spring (8) sleeved on the fixing rod (7); two ends of the first spring (8) are respectively arranged on the shielding plate (6) and the stabilizing frame (9); and the fixing rod (7) is slidably connected to the stabilizing frame (9).

2. A multi-port power electronic transformer according to claim 1, characterized in that: The fixing plate (3) is provided with two symmetrically distributed limiting grooves (5), the shielding plate (6) is provided with an inserting block (10) adapted to the limiting grooves (5), and the shielding plate (6) is provided with a protrusion capable of covering the opening of the connection port (4).

3. The multi-port power electronic transformer according to claim 1, characterized in that: The reinforcement mechanism comprises two fixed frames (11) distributed on the fixed plate (3) on the left and right, a slide bar (12) slidably arranged on the fixed frame (11), a convex ring (13) arranged on the slide bar (12), a second spring (14) arranged on the convex ring (13), a latch (15) slidably arranged on the fixed frame (11) and passing through the slide bar (12), and a clamping block (16) arranged on the slide bar (12), wherein the second spring (14) is sleeved on the slide bar (12).

4. A multi-port power electronic transformer according to claim 3, characterized in that: Two vertical plates (18) are provided on the fixed plate (3), and the sliding rod (12) is slidably connected to the vertical plates (18).

5. The multi-port power electronic transformer according to claim 3, characterized in that: A rubber pad (17) is provided on the clamping block (16).

6. The multi-port power electronic transformer according to claim 1, characterized in that: A wiring assembly is provided on the machine body (1), the wiring assembly comprising a support block (19) provided on the machine body (1), a plurality of wire clamping bodies (20) linearly distributed on the support block (19), and an elastic pad (21) provided inside the support block (19), wherein the wire clamping body (20) comprises an arc-shaped clamping frame and a "T"-shaped support body.

7. The multi-port power electronic transformer according to claim 1, characterized in that: A plurality of heat sinks (22) are provided on the machine body (1), and a connection assembly is provided on the heat sink (22). The connection assembly comprises a connection frame (23), an insertion rod (24) provided through the connection frame (23), a threaded block (25) provided on the machine body (1), and a fixing bolt (26) threadedly connected to the threaded block (25), wherein the fixing bolt (26) is threadedly connected to the insertion rod (24).

8. The multi-port power electronic transformer according to claim 7, characterized in that: A plurality of spacers (27) are provided on the connection frame (23), and the heat sink (22) is embedded in the gaps between adjacent spacers (27).

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